1 2 OpenSSL CHANGES 3 _______________ 4 5 This is a high-level summary of the most important changes. 6 For a full list of changes, see the git commit log; for example, 7 https://github.com/openssl/openssl/commits/ and pick the appropriate 8 release branch. 9 10 Changes between 1.1.1s and 1.1.1t [xx XXX xxxx] 11 *) Corrected documentation of X509_VERIFY_PARAM_add0_policy() to mention 12 that it does not enable policy checking. Thanks to 13 David Benjamin for discovering this issue. (CVE-2023-0466) 14 [Tomas Mraz] 15 16 *) Fixed a type confusion vulnerability relating to X.400 address processing 17 inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING 18 but subsequently interpreted by GENERAL_NAME_cmp as an ASN1_TYPE. This 19 vulnerability may allow an attacker who can provide a certificate chain and 20 CRL (neither of which need have a valid signature) to pass arbitrary 21 pointers to a memcmp call, creating a possible read primitive, subject to 22 some constraints. Refer to the advisory for more information. Thanks to 23 David Benjamin for discovering this issue. (CVE-2023-0286) 24 25 This issue has been fixed by changing the public header file definition of 26 GENERAL_NAME so that x400Address reflects the implementation. It was not 27 possible for any existing application to successfully use the existing 28 definition; however, if any application references the x400Address field 29 (e.g. in dead code), note that the type of this field has changed. There is 30 no ABI change. 31 32 [Hugo Landau] 33 34 Changes between 1.1.1r and 1.1.1s [1 Nov 2022] 35 36 *) Fixed a regression introduced in 1.1.1r version not refreshing the 37 certificate data to be signed before signing the certificate. 38 39 [Gibeom Gwon] 40 41 Changes between 1.1.1q and 1.1.1r [11 Oct 2022] 42 43 *) Fixed the linux-mips64 Configure target which was missing the 44 SIXTY_FOUR_BIT bn_ops flag. This was causing heap corruption on that 45 platform. 46 [Adam Joseph] 47 48 *) Fixed a strict aliasing problem in bn_nist. Clang-14 optimisation was 49 causing incorrect results in some cases as a result. 50 [Paul Dale] 51 52 *) Fixed SSL_pending() and SSL_has_pending() with DTLS which were failing to 53 report correct results in some cases 54 [Matt Caswell] 55 56 *) Fixed a regression introduced in 1.1.1o for re-signing certificates with 57 different key sizes 58 [Todd Short] 59 60 *) Added the loongarch64 target 61 [Shi Pujin] 62 63 *) Fixed a DRBG seed propagation thread safety issue 64 [Bernd Edlinger] 65 66 *) Fixed a memory leak in tls13_generate_secret 67 [Bernd Edlinger] 68 69 *) Fixed reported performance degradation on aarch64. Restored the 70 implementation prior to commit 2621751 ("aes/asm/aesv8-armx.pl: avoid 71 32-bit lane assignment in CTR mode") for 64bit targets only, since it is 72 reportedly 2-17% slower and the silicon errata only affects 32bit targets. 73 The new algorithm is still used for 32 bit targets. 74 [Bernd Edlinger] 75 76 *) Added a missing header for memcmp that caused compilation failure on some 77 platforms 78 [Gregor Jasny] 79 80 Changes between 1.1.1p and 1.1.1q [5 Jul 2022] 81 82 *) AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised 83 implementation would not encrypt the entirety of the data under some 84 circumstances. This could reveal sixteen bytes of data that was 85 preexisting in the memory that wasn't written. In the special case of 86 "in place" encryption, sixteen bytes of the plaintext would be revealed. 87 88 Since OpenSSL does not support OCB based cipher suites for TLS and DTLS, 89 they are both unaffected. 90 (CVE-2022-2097) 91 [Alex Chernyakhovsky, David Benjamin, Alejandro Sedeño] 92 93 Changes between 1.1.1o and 1.1.1p [21 Jun 2022] 94 95 *) In addition to the c_rehash shell command injection identified in 96 CVE-2022-1292, further bugs where the c_rehash script does not 97 properly sanitise shell metacharacters to prevent command injection have been 98 fixed. 99 100 When the CVE-2022-1292 was fixed it was not discovered that there 101 are other places in the script where the file names of certificates 102 being hashed were possibly passed to a command executed through the shell. 103 104 This script is distributed by some operating systems in a manner where 105 it is automatically executed. On such operating systems, an attacker 106 could execute arbitrary commands with the privileges of the script. 107 108 Use of the c_rehash script is considered obsolete and should be replaced 109 by the OpenSSL rehash command line tool. 110 (CVE-2022-2068) 111 [Daniel Fiala, Tomáš Mráz] 112 113 *) When OpenSSL TLS client is connecting without any supported elliptic 114 curves and TLS-1.3 protocol is disabled the connection will no longer fail 115 if a ciphersuite that does not use a key exchange based on elliptic 116 curves can be negotiated. 117 [Tomáš Mráz] 118 119 Changes between 1.1.1n and 1.1.1o [3 May 2022] 120 121 *) Fixed a bug in the c_rehash script which was not properly sanitising shell 122 metacharacters to prevent command injection. This script is distributed 123 by some operating systems in a manner where it is automatically executed. 124 On such operating systems, an attacker could execute arbitrary commands 125 with the privileges of the script. 126 127 Use of the c_rehash script is considered obsolete and should be replaced 128 by the OpenSSL rehash command line tool. 129 (CVE-2022-1292) 130 [Tomáš Mráz] 131 132 Changes between 1.1.1m and 1.1.1n [15 Mar 2022] 133 134 *) Fixed a bug in the BN_mod_sqrt() function that can cause it to loop forever 135 for non-prime moduli. 136 137 Internally this function is used when parsing certificates that contain 138 elliptic curve public keys in compressed form or explicit elliptic curve 139 parameters with a base point encoded in compressed form. 140 141 It is possible to trigger the infinite loop by crafting a certificate that 142 has invalid explicit curve parameters. 143 144 Since certificate parsing happens prior to verification of the certificate 145 signature, any process that parses an externally supplied certificate may 146 thus be subject to a denial of service attack. The infinite loop can also 147 be reached when parsing crafted private keys as they can contain explicit 148 elliptic curve parameters. 149 150 Thus vulnerable situations include: 151 152 - TLS clients consuming server certificates 153 - TLS servers consuming client certificates 154 - Hosting providers taking certificates or private keys from customers 155 - Certificate authorities parsing certification requests from subscribers 156 - Anything else which parses ASN.1 elliptic curve parameters 157 158 Also any other applications that use the BN_mod_sqrt() where the attacker 159 can control the parameter values are vulnerable to this DoS issue. 160 (CVE-2022-0778) 161 [Tomáš Mráz] 162 163 *) Add ciphersuites based on DHE_PSK (RFC 4279) and ECDHE_PSK (RFC 5489) 164 to the list of ciphersuites providing Perfect Forward Secrecy as 165 required by SECLEVEL >= 3. 166 167 [Dmitry Belyavskiy, Nicola Tuveri] 168 169 Changes between 1.1.1l and 1.1.1m [14 Dec 2021] 170 171 *) Avoid loading of a dynamic engine twice. 172 173 [Bernd Edlinger] 174 175 *) Fixed building on Debian with kfreebsd kernels 176 177 [Mattias Ellert] 178 179 *) Prioritise DANE TLSA issuer certs over peer certs 180 181 [Viktor Dukhovni] 182 183 *) Fixed random API for MacOS prior to 10.12 184 185 These MacOS versions don't support the CommonCrypto APIs 186 187 [Lenny Primak] 188 189 Changes between 1.1.1k and 1.1.1l [24 Aug 2021] 190 191 *) Fixed an SM2 Decryption Buffer Overflow. 192 193 In order to decrypt SM2 encrypted data an application is expected to call the 194 API function EVP_PKEY_decrypt(). Typically an application will call this 195 function twice. The first time, on entry, the "out" parameter can be NULL and, 196 on exit, the "outlen" parameter is populated with the buffer size required to 197 hold the decrypted plaintext. The application can then allocate a sufficiently 198 sized buffer and call EVP_PKEY_decrypt() again, but this time passing a non-NULL 199 value for the "out" parameter. 200 201 A bug in the implementation of the SM2 decryption code means that the 202 calculation of the buffer size required to hold the plaintext returned by the 203 first call to EVP_PKEY_decrypt() can be smaller than the actual size required by 204 the second call. This can lead to a buffer overflow when EVP_PKEY_decrypt() is 205 called by the application a second time with a buffer that is too small. 206 207 A malicious attacker who is able present SM2 content for decryption to an 208 application could cause attacker chosen data to overflow the buffer by up to a 209 maximum of 62 bytes altering the contents of other data held after the 210 buffer, possibly changing application behaviour or causing the application to 211 crash. The location of the buffer is application dependent but is typically 212 heap allocated. 213 (CVE-2021-3711) 214 [Matt Caswell] 215 216 *) Fixed various read buffer overruns processing ASN.1 strings 217 218 ASN.1 strings are represented internally within OpenSSL as an ASN1_STRING 219 structure which contains a buffer holding the string data and a field holding 220 the buffer length. This contrasts with normal C strings which are repesented as 221 a buffer for the string data which is terminated with a NUL (0) byte. 222 223 Although not a strict requirement, ASN.1 strings that are parsed using OpenSSL's 224 own "d2i" functions (and other similar parsing functions) as well as any string 225 whose value has been set with the ASN1_STRING_set() function will additionally 226 NUL terminate the byte array in the ASN1_STRING structure. 227 228 However, it is possible for applications to directly construct valid ASN1_STRING 229 structures which do not NUL terminate the byte array by directly setting the 230 "data" and "length" fields in the ASN1_STRING array. This can also happen by 231 using the ASN1_STRING_set0() function. 232 233 Numerous OpenSSL functions that print ASN.1 data have been found to assume that 234 the ASN1_STRING byte array will be NUL terminated, even though this is not 235 guaranteed for strings that have been directly constructed. Where an application 236 requests an ASN.1 structure to be printed, and where that ASN.1 structure 237 contains ASN1_STRINGs that have been directly constructed by the application 238 without NUL terminating the "data" field, then a read buffer overrun can occur. 239 240 The same thing can also occur during name constraints processing of certificates 241 (for example if a certificate has been directly constructed by the application 242 instead of loading it via the OpenSSL parsing functions, and the certificate 243 contains non NUL terminated ASN1_STRING structures). It can also occur in the 244 X509_get1_email(), X509_REQ_get1_email() and X509_get1_ocsp() functions. 245 246 If a malicious actor can cause an application to directly construct an 247 ASN1_STRING and then process it through one of the affected OpenSSL functions 248 then this issue could be hit. This might result in a crash (causing a Denial of 249 Service attack). It could also result in the disclosure of private memory 250 contents (such as private keys, or sensitive plaintext). 251 (CVE-2021-3712) 252 [Matt Caswell] 253 254 Changes between 1.1.1j and 1.1.1k [25 Mar 2021] 255 256 *) Fixed a problem with verifying a certificate chain when using the 257 X509_V_FLAG_X509_STRICT flag. This flag enables additional security checks 258 of the certificates present in a certificate chain. It is not set by 259 default. 260 261 Starting from OpenSSL version 1.1.1h a check to disallow certificates in 262 the chain that have explicitly encoded elliptic curve parameters was added 263 as an additional strict check. 264 265 An error in the implementation of this check meant that the result of a 266 previous check to confirm that certificates in the chain are valid CA 267 certificates was overwritten. This effectively bypasses the check 268 that non-CA certificates must not be able to issue other certificates. 269 270 If a "purpose" has been configured then there is a subsequent opportunity 271 for checks that the certificate is a valid CA. All of the named "purpose" 272 values implemented in libcrypto perform this check. Therefore, where 273 a purpose is set the certificate chain will still be rejected even when the 274 strict flag has been used. A purpose is set by default in libssl client and 275 server certificate verification routines, but it can be overridden or 276 removed by an application. 277 278 In order to be affected, an application must explicitly set the 279 X509_V_FLAG_X509_STRICT verification flag and either not set a purpose 280 for the certificate verification or, in the case of TLS client or server 281 applications, override the default purpose. 282 (CVE-2021-3450) 283 [Tomáš Mráz] 284 285 *) Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously 286 crafted renegotiation ClientHello message from a client. If a TLSv1.2 287 renegotiation ClientHello omits the signature_algorithms extension (where 288 it was present in the initial ClientHello), but includes a 289 signature_algorithms_cert extension then a NULL pointer dereference will 290 result, leading to a crash and a denial of service attack. 291 292 A server is only vulnerable if it has TLSv1.2 and renegotiation enabled 293 (which is the default configuration). OpenSSL TLS clients are not impacted 294 by this issue. 295 (CVE-2021-3449) 296 [Peter Kästle and Samuel Sapalski] 297 298 Changes between 1.1.1i and 1.1.1j [16 Feb 2021] 299 300 *) Fixed the X509_issuer_and_serial_hash() function. It attempts to 301 create a unique hash value based on the issuer and serial number data 302 contained within an X509 certificate. However it was failing to correctly 303 handle any errors that may occur while parsing the issuer field (which might 304 occur if the issuer field is maliciously constructed). This may subsequently 305 result in a NULL pointer deref and a crash leading to a potential denial of 306 service attack. 307 (CVE-2021-23841) 308 [Matt Caswell] 309 310 *) Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING 311 padding mode to correctly check for rollback attacks. This is considered a 312 bug in OpenSSL 1.1.1 because it does not support SSLv2. In 1.0.2 this is 313 CVE-2021-23839. 314 [Matt Caswell] 315 316 *) Fixed the EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate 317 functions. Previously they could overflow the output length argument in some 318 cases where the input length is close to the maximum permissable length for 319 an integer on the platform. In such cases the return value from the function 320 call would be 1 (indicating success), but the output length value would be 321 negative. This could cause applications to behave incorrectly or crash. 322 (CVE-2021-23840) 323 [Matt Caswell] 324 325 *) Fixed SRP_Calc_client_key so that it runs in constant time. The previous 326 implementation called BN_mod_exp without setting BN_FLG_CONSTTIME. This 327 could be exploited in a side channel attack to recover the password. Since 328 the attack is local host only this is outside of the current OpenSSL 329 threat model and therefore no CVE is assigned. 330 331 Thanks to Mohammed Sabt and Daniel De Almeida Braga for reporting this 332 issue. 333 [Matt Caswell] 334 335 Changes between 1.1.1h and 1.1.1i [8 Dec 2020] 336 337 *) Fixed NULL pointer deref in the GENERAL_NAME_cmp function 338 This function could crash if both GENERAL_NAMEs contain an EDIPARTYNAME. 339 If an attacker can control both items being compared then this could lead 340 to a possible denial of service attack. OpenSSL itself uses the 341 GENERAL_NAME_cmp function for two purposes: 342 1) Comparing CRL distribution point names between an available CRL and a 343 CRL distribution point embedded in an X509 certificate 344 2) When verifying that a timestamp response token signer matches the 345 timestamp authority name (exposed via the API functions 346 TS_RESP_verify_response and TS_RESP_verify_token) 347 (CVE-2020-1971) 348 [Matt Caswell] 349 350 *) Add support for Apple Silicon M1 Macs with the darwin64-arm64-cc target. 351 [Stuart Carnie] 352 353 *) The security callback, which can be customised by application code, supports 354 the security operation SSL_SECOP_TMP_DH. This is defined to take an EVP_PKEY 355 in the "other" parameter. In most places this is what is passed. All these 356 places occur server side. However there was one client side call of this 357 security operation and it passed a DH object instead. This is incorrect 358 according to the definition of SSL_SECOP_TMP_DH, and is inconsistent with all 359 of the other locations. Therefore this client side call has been changed to 360 pass an EVP_PKEY instead. 361 [Matt Caswell] 362 363 *) In 1.1.1h, an expired trusted (root) certificate was not anymore rejected 364 when validating a certificate path. This check is restored in 1.1.1i. 365 [David von Oheimb] 366 367 Changes between 1.1.1g and 1.1.1h [22 Sep 2020] 368 369 *) Certificates with explicit curve parameters are now disallowed in 370 verification chains if the X509_V_FLAG_X509_STRICT flag is used. 371 [Tomas Mraz] 372 373 *) The 'MinProtocol' and 'MaxProtocol' configuration commands now silently 374 ignore TLS protocol version bounds when configuring DTLS-based contexts, and 375 conversely, silently ignore DTLS protocol version bounds when configuring 376 TLS-based contexts. The commands can be repeated to set bounds of both 377 types. The same applies with the corresponding "min_protocol" and 378 "max_protocol" command-line switches, in case some application uses both TLS 379 and DTLS. 380 381 SSL_CTX instances that are created for a fixed protocol version (e.g. 382 TLSv1_server_method()) also silently ignore version bounds. Previously 383 attempts to apply bounds to these protocol versions would result in an 384 error. Now only the "version-flexible" SSL_CTX instances are subject to 385 limits in configuration files in command-line options. 386 [Viktor Dukhovni] 387 388 *) Handshake now fails if Extended Master Secret extension is dropped 389 on renegotiation. 390 [Tomas Mraz] 391 392 *) Accidentally, an expired trusted (root) certificate is not anymore rejected 393 when validating a certificate path. 394 [David von Oheimb] 395 396 *) The Oracle Developer Studio compiler will start reporting deprecated APIs 397 398 Changes between 1.1.1f and 1.1.1g [21 Apr 2020] 399 400 *) Fixed segmentation fault in SSL_check_chain() 401 Server or client applications that call the SSL_check_chain() function 402 during or after a TLS 1.3 handshake may crash due to a NULL pointer 403 dereference as a result of incorrect handling of the 404 "signature_algorithms_cert" TLS extension. The crash occurs if an invalid 405 or unrecognised signature algorithm is received from the peer. This could 406 be exploited by a malicious peer in a Denial of Service attack. 407 (CVE-2020-1967) 408 [Benjamin Kaduk] 409 410 *) Added AES consttime code for no-asm configurations 411 an optional constant time support for AES was added 412 when building openssl for no-asm. 413 Enable with: ./config no-asm -DOPENSSL_AES_CONST_TIME 414 Disable with: ./config no-asm -DOPENSSL_NO_AES_CONST_TIME 415 At this time this feature is by default disabled. 416 It will be enabled by default in 3.0. 417 [Bernd Edlinger] 418 419 Changes between 1.1.1e and 1.1.1f [31 Mar 2020] 420 421 *) Revert the change of EOF detection while reading in libssl to avoid 422 regressions in applications depending on the current way of reporting 423 the EOF. As the existing method is not fully accurate the change to 424 reporting the EOF via SSL_ERROR_SSL is kept on the current development 425 branch and will be present in the 3.0 release. 426 [Tomas Mraz] 427 428 *) Revised BN_generate_prime_ex to not avoid factors 3..17863 in p-1 429 when primes for RSA keys are computed. 430 Since we previously always generated primes == 2 (mod 3) for RSA keys, 431 the 2-prime and 3-prime RSA modules were easy to distinguish, since 432 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting 433 2-prime vs. 3-prime RSA keys was possible by computing N mod 3. 434 This avoids possible fingerprinting of newly generated RSA modules. 435 [Bernd Edlinger] 436 437 Changes between 1.1.1d and 1.1.1e [17 Mar 2020] 438 *) Properly detect EOF while reading in libssl. Previously if we hit an EOF 439 while reading in libssl then we would report an error back to the 440 application (SSL_ERROR_SYSCALL) but errno would be 0. We now add 441 an error to the stack (which means we instead return SSL_ERROR_SSL) and 442 therefore give a hint as to what went wrong. 443 [Matt Caswell] 444 445 *) Check that ed25519 and ed448 are allowed by the security level. Previously 446 signature algorithms not using an MD were not being checked that they were 447 allowed by the security level. 448 [Kurt Roeckx] 449 450 *) Fixed SSL_get_servername() behaviour. The behaviour of SSL_get_servername() 451 was not quite right. The behaviour was not consistent between resumption 452 and normal handshakes, and also not quite consistent with historical 453 behaviour. The behaviour in various scenarios has been clarified and 454 it has been updated to make it match historical behaviour as closely as 455 possible. 456 [Matt Caswell] 457 458 *) [VMS only] The header files that the VMS compilers include automatically, 459 __DECC_INCLUDE_PROLOGUE.H and __DECC_INCLUDE_EPILOGUE.H, use pragmas that 460 the C++ compiler doesn't understand. This is a shortcoming in the 461 compiler, but can be worked around with __cplusplus guards. 462 463 C++ applications that use OpenSSL libraries must be compiled using the 464 qualifier '/NAMES=(AS_IS,SHORTENED)' to be able to use all the OpenSSL 465 functions. Otherwise, only functions with symbols of less than 31 466 characters can be used, as the linker will not be able to successfully 467 resolve symbols with longer names. 468 [Richard Levitte] 469 470 *) Corrected the documentation of the return values from the EVP_DigestSign* 471 set of functions. The documentation mentioned negative values for some 472 errors, but this was never the case, so the mention of negative values 473 was removed. 474 475 Code that followed the documentation and thereby check with something 476 like 'EVP_DigestSignInit(...) <= 0' will continue to work undisturbed. 477 [Richard Levitte] 478 479 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure 480 used in exponentiation with 512-bit moduli. No EC algorithms are 481 affected. Analysis suggests that attacks against 2-prime RSA1024, 482 3-prime RSA1536, and DSA1024 as a result of this defect would be very 483 difficult to perform and are not believed likely. Attacks against DH512 484 are considered just feasible. However, for an attack the target would 485 have to re-use the DH512 private key, which is not recommended anyway. 486 Also applications directly using the low level API BN_mod_exp may be 487 affected if they use BN_FLG_CONSTTIME. 488 (CVE-2019-1551) 489 [Andy Polyakov] 490 491 *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY. 492 The presence of this system service is determined at run-time. 493 [Richard Levitte] 494 495 *) Added newline escaping functionality to a filename when using openssl dgst. 496 This output format is to replicate the output format found in the '*sum' 497 checksum programs. This aims to preserve backward compatibility. 498 [Matt Eaton, Richard Levitte, and Paul Dale] 499 500 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just 501 the first value. 502 [Jon Spillett] 503 504 Changes between 1.1.1c and 1.1.1d [10 Sep 2019] 505 506 *) Fixed a fork protection issue. OpenSSL 1.1.1 introduced a rewritten random 507 number generator (RNG). This was intended to include protection in the 508 event of a fork() system call in order to ensure that the parent and child 509 processes did not share the same RNG state. However this protection was not 510 being used in the default case. 511 512 A partial mitigation for this issue is that the output from a high 513 precision timer is mixed into the RNG state so the likelihood of a parent 514 and child process sharing state is significantly reduced. 515 516 If an application already calls OPENSSL_init_crypto() explicitly using 517 OPENSSL_INIT_ATFORK then this problem does not occur at all. 518 (CVE-2019-1549) 519 [Matthias St. Pierre] 520 521 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is 522 used even when parsing explicit parameters, when loading a serialized key 523 or calling `EC_GROUP_new_from_ecpkparameters()`/ 524 `EC_GROUP_new_from_ecparameters()`. 525 This prevents bypass of security hardening and performance gains, 526 especially for curves with specialized EC_METHODs. 527 By default, if a key encoded with explicit parameters is loaded and later 528 serialized, the output is still encoded with explicit parameters, even if 529 internally a "named" EC_GROUP is used for computation. 530 [Nicola Tuveri] 531 532 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before 533 this change, EC_GROUP_set_generator would accept order and/or cofactor as 534 NULL. After this change, only the cofactor parameter can be NULL. It also 535 does some minimal sanity checks on the passed order. 536 (CVE-2019-1547) 537 [Billy Bob Brumley] 538 539 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey. 540 An attack is simple, if the first CMS_recipientInfo is valid but the 541 second CMS_recipientInfo is chosen ciphertext. If the second 542 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct 543 encryption key will be replaced by garbage, and the message cannot be 544 decoded, but if the RSA decryption fails, the correct encryption key is 545 used and the recipient will not notice the attack. 546 As a work around for this potential attack the length of the decrypted 547 key must be equal to the cipher default key length, in case the 548 certifiate is not given and all recipientInfo are tried out. 549 The old behaviour can be re-enabled in the CMS code by setting the 550 CMS_DEBUG_DECRYPT flag. 551 (CVE-2019-1563) 552 [Bernd Edlinger] 553 554 *) Early start up entropy quality from the DEVRANDOM seed source has been 555 improved for older Linux systems. The RAND subsystem will wait for 556 /dev/random to be producing output before seeding from /dev/urandom. 557 The seeded state is stored for future library initialisations using 558 a system global shared memory segment. The shared memory identifier 559 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to 560 the desired value. The default identifier is 114. 561 [Paul Dale] 562 563 *) Correct the extended master secret constant on EBCDIC systems. Without this 564 fix TLS connections between an EBCDIC system and a non-EBCDIC system that 565 negotiate EMS will fail. Unfortunately this also means that TLS connections 566 between EBCDIC systems with this fix, and EBCDIC systems without this 567 fix will fail if they negotiate EMS. 568 [Matt Caswell] 569 570 *) Use Windows installation paths in the mingw builds 571 572 Mingw isn't a POSIX environment per se, which means that Windows 573 paths should be used for installation. 574 (CVE-2019-1552) 575 [Richard Levitte] 576 577 *) Changed DH_check to accept parameters with order q and 2q subgroups. 578 With order 2q subgroups the bit 0 of the private key is not secret 579 but DH_generate_key works around that by clearing bit 0 of the 580 private key for those. This avoids leaking bit 0 of the private key. 581 [Bernd Edlinger] 582 583 *) Significantly reduce secure memory usage by the randomness pools. 584 [Paul Dale] 585 586 *) Revert the DEVRANDOM_WAIT feature for Linux systems 587 588 The DEVRANDOM_WAIT feature added a select() call to wait for the 589 /dev/random device to become readable before reading from the 590 /dev/urandom device. 591 592 It turned out that this change had negative side effects on 593 performance which were not acceptable. After some discussion it 594 was decided to revert this feature and leave it up to the OS 595 resp. the platform maintainer to ensure a proper initialization 596 during early boot time. 597 [Matthias St. Pierre] 598 599 Changes between 1.1.1b and 1.1.1c [28 May 2019] 600 601 *) Add build tests for C++. These are generated files that only do one 602 thing, to include one public OpenSSL head file each. This tests that 603 the public header files can be usefully included in a C++ application. 604 605 This test isn't enabled by default. It can be enabled with the option 606 'enable-buildtest-c++'. 607 [Richard Levitte] 608 609 *) Enable SHA3 pre-hashing for ECDSA and DSA. 610 [Patrick Steuer] 611 612 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024. 613 This changes the size when using the genpkey app when no size is given. It 614 fixes an omission in earlier changes that changed all RSA, DSA and DH 615 generation apps to use 2048 bits by default. 616 [Kurt Roeckx] 617 618 *) Reorganize the manual pages to consistently have RETURN VALUES, 619 EXAMPLES, SEE ALSO and HISTORY come in that order, and adjust 620 util/fix-doc-nits accordingly. 621 [Paul Yang, Joshua Lock] 622 623 *) Add the missing accessor EVP_PKEY_get0_engine() 624 [Matt Caswell] 625 626 *) Have apps like 's_client' and 's_server' output the signature scheme 627 along with other cipher suite parameters when debugging. 628 [Lorinczy Zsigmond] 629 630 *) Make OPENSSL_config() error agnostic again. 631 [Richard Levitte] 632 633 *) Do the error handling in RSA decryption constant time. 634 [Bernd Edlinger] 635 636 *) Prevent over long nonces in ChaCha20-Poly1305. 637 638 ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input 639 for every encryption operation. RFC 7539 specifies that the nonce value 640 (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length 641 and front pads the nonce with 0 bytes if it is less than 12 642 bytes. However it also incorrectly allows a nonce to be set of up to 16 643 bytes. In this case only the last 12 bytes are significant and any 644 additional leading bytes are ignored. 645 646 It is a requirement of using this cipher that nonce values are 647 unique. Messages encrypted using a reused nonce value are susceptible to 648 serious confidentiality and integrity attacks. If an application changes 649 the default nonce length to be longer than 12 bytes and then makes a 650 change to the leading bytes of the nonce expecting the new value to be a 651 new unique nonce then such an application could inadvertently encrypt 652 messages with a reused nonce. 653 654 Additionally the ignored bytes in a long nonce are not covered by the 655 integrity guarantee of this cipher. Any application that relies on the 656 integrity of these ignored leading bytes of a long nonce may be further 657 affected. Any OpenSSL internal use of this cipher, including in SSL/TLS, 658 is safe because no such use sets such a long nonce value. However user 659 applications that use this cipher directly and set a non-default nonce 660 length to be longer than 12 bytes may be vulnerable. 661 662 This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk 663 Greef of Ronomon. 664 (CVE-2019-1543) 665 [Matt Caswell] 666 667 *) Add DEVRANDOM_WAIT feature for Linux systems 668 669 On older Linux systems where the getrandom() system call is not available, 670 OpenSSL normally uses the /dev/urandom device for seeding its CSPRNG. 671 Contrary to getrandom(), the /dev/urandom device will not block during 672 early boot when the kernel CSPRNG has not been seeded yet. 673 674 To mitigate this known weakness, use select() to wait for /dev/random to 675 become readable before reading from /dev/urandom. 676 677 *) Ensure that SM2 only uses SM3 as digest algorithm 678 [Paul Yang] 679 680 Changes between 1.1.1a and 1.1.1b [26 Feb 2019] 681 682 *) Added SCA hardening for modular field inversion in EC_GROUP through 683 a new dedicated field_inv() pointer in EC_METHOD. 684 This also addresses a leakage affecting conversions from projective 685 to affine coordinates. 686 [Billy Bob Brumley, Nicola Tuveri] 687 688 *) Change the info callback signals for the start and end of a post-handshake 689 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START 690 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get 691 confused by this and assume that a TLSv1.2 renegotiation has started. This 692 can break KeyUpdate handling. Instead we no longer signal the start and end 693 of a post handshake message exchange (although the messages themselves are 694 still signalled). This could break some applications that were expecting 695 the old signals. However without this KeyUpdate is not usable for many 696 applications. 697 [Matt Caswell] 698 699 *) Fix a bug in the computation of the endpoint-pair shared secret used 700 by DTLS over SCTP. This breaks interoperability with older versions 701 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime 702 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling 703 interoperability with such broken implementations. However, enabling 704 this switch breaks interoperability with correct implementations. 705 706 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a 707 re-used X509_PUBKEY object if the second PUBKEY is malformed. 708 [Bernd Edlinger] 709 710 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0(). 711 [Richard Levitte] 712 713 *) Remove the 'dist' target and add a tarball building script. The 714 'dist' target has fallen out of use, and it shouldn't be 715 necessary to configure just to create a source distribution. 716 [Richard Levitte] 717 718 Changes between 1.1.1 and 1.1.1a [20 Nov 2018] 719 720 *) Timing vulnerability in DSA signature generation 721 722 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a 723 timing side channel attack. An attacker could use variations in the signing 724 algorithm to recover the private key. 725 726 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser. 727 (CVE-2018-0734) 728 [Paul Dale] 729 730 *) Timing vulnerability in ECDSA signature generation 731 732 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a 733 timing side channel attack. An attacker could use variations in the signing 734 algorithm to recover the private key. 735 736 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser. 737 (CVE-2018-0735) 738 [Paul Dale] 739 740 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for 741 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names 742 are retained for backwards compatibility. 743 [Antoine Salon] 744 745 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input 746 if its length exceeds 4096 bytes. The limit has been raised to a buffer size 747 of two gigabytes and the error handling improved. 748 749 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been 750 categorized as a normal bug, not a security issue, because the DRBG reseeds 751 automatically and is fully functional even without additional randomness 752 provided by the application. 753 754 Changes between 1.1.0i and 1.1.1 [11 Sep 2018] 755 756 *) Add a new ClientHello callback. Provides a callback interface that gives 757 the application the ability to adjust the nascent SSL object at the 758 earliest stage of ClientHello processing, immediately after extensions have 759 been collected but before they have been processed. In particular, this 760 callback can adjust the supported TLS versions in response to the contents 761 of the ClientHello 762 [Benjamin Kaduk] 763 764 *) Add SM2 base algorithm support. 765 [Jack Lloyd] 766 767 *) s390x assembly pack: add (improved) hardware-support for the following 768 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb, 769 aes-cfb/cfb8, aes-ecb. 770 [Patrick Steuer] 771 772 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str 773 parameter is no longer accepted, as it leads to a corrupt table. NULL 774 pem_str is reserved for alias entries only. 775 [Richard Levitte] 776 777 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder 778 step for prime curves. The new implementation is based on formulae from 779 differential addition-and-doubling in homogeneous projective coordinates 780 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant 781 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves 782 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified 783 to work in projective coordinates. 784 [Billy Bob Brumley, Nicola Tuveri] 785 786 *) Change generating and checking of primes so that the error rate of not 787 being prime depends on the intended use based on the size of the input. 788 For larger primes this will result in more rounds of Miller-Rabin. 789 The maximal error rate for primes with more than 1080 bits is lowered 790 to 2^-128. 791 [Kurt Roeckx, Annie Yousar] 792 793 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64. 794 [Kurt Roeckx] 795 796 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when 797 moving between systems, and to avoid confusion when a Windows build is 798 done with mingw vs with MSVC. For POSIX installs, there's still a 799 symlink or copy named 'tsget' to avoid that confusion as well. 800 [Richard Levitte] 801 802 *) Revert blinding in ECDSA sign and instead make problematic addition 803 length-invariant. Switch even to fixed-length Montgomery multiplication. 804 [Andy Polyakov] 805 806 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder 807 step for binary curves. The new implementation is based on formulae from 808 differential addition-and-doubling in mixed Lopez-Dahab projective 809 coordinates, modified to independently blind the operands. 810 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri] 811 812 *) Add a scaffold to optionally enhance the Montgomery ladder implementation 813 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing 814 EC_METHODs to implement their own specialized "ladder step", to take 815 advantage of more favorable coordinate systems or more efficient 816 differential addition-and-doubling algorithms. 817 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri] 818 819 *) Modified the random device based seed sources to keep the relevant 820 file descriptors open rather than reopening them on each access. 821 This allows such sources to operate in a chroot() jail without 822 the associated device nodes being available. This behaviour can be 823 controlled using RAND_keep_random_devices_open(). 824 [Paul Dale] 825 826 *) Numerous side-channel attack mitigations have been applied. This may have 827 performance impacts for some algorithms for the benefit of improved 828 security. Specific changes are noted in this change log by their respective 829 authors. 830 [Matt Caswell] 831 832 *) AIX shared library support overhaul. Switch to AIX "natural" way of 833 handling shared libraries, which means collecting shared objects of 834 different versions and bitnesses in one common archive. This allows to 835 mitigate conflict between 1.0 and 1.1 side-by-side installations. It 836 doesn't affect the way 3rd party applications are linked, only how 837 multi-version installation is managed. 838 [Andy Polyakov] 839 840 *) Make ec_group_do_inverse_ord() more robust and available to other 841 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA 842 mitigations are applied to the fallback BN_mod_inverse(). 843 When using this function rather than BN_mod_inverse() directly, new 844 EC cryptosystem implementations are then safer-by-default. 845 [Billy Bob Brumley] 846 847 *) Add coordinate blinding for EC_POINT and implement projective 848 coordinate blinding for generic prime curves as a countermeasure to 849 chosen point SCA attacks. 850 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley] 851 852 *) Add blinding to ECDSA and DSA signatures to protect against side channel 853 attacks discovered by Keegan Ryan (NCC Group). 854 [Matt Caswell] 855 856 *) Enforce checking in the pkeyutl command line app to ensure that the input 857 length does not exceed the maximum supported digest length when performing 858 a sign, verify or verifyrecover operation. 859 [Matt Caswell] 860 861 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking 862 I/O in combination with something like select() or poll() will hang. This 863 can be turned off again using SSL_CTX_clear_mode(). 864 Many applications do not properly handle non-application data records, and 865 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works 866 around the problems in those applications, but can also break some. 867 It's recommended to read the manpages about SSL_read(), SSL_write(), 868 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and 869 SSL_CTX_set_read_ahead() again. 870 [Kurt Roeckx] 871 872 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we 873 now allow empty (zero character) pass phrases. 874 [Richard Levitte] 875 876 *) Apply blinding to binary field modular inversion and remove patent 877 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation. 878 [Billy Bob Brumley] 879 880 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for 881 binary and prime elliptic curves. 882 [Billy Bob Brumley] 883 884 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for 885 constant time fixed point multiplication. 886 [Billy Bob Brumley] 887 888 *) Revise elliptic curve scalar multiplication with timing attack 889 defenses: ec_wNAF_mul redirects to a constant time implementation 890 when computing fixed point and variable point multiplication (which 891 in OpenSSL are mostly used with secret scalars in keygen, sign, 892 ECDH derive operations). 893 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García, 894 Sohaib ul Hassan] 895 896 *) Updated CONTRIBUTING 897 [Rich Salz] 898 899 *) Updated DRBG / RAND to request nonce and additional low entropy 900 randomness from the system. 901 [Matthias St. Pierre] 902 903 *) Updated 'openssl rehash' to use OpenSSL consistent default. 904 [Richard Levitte] 905 906 *) Moved the load of the ssl_conf module to libcrypto, which helps 907 loading engines that libssl uses before libssl is initialised. 908 [Matt Caswell] 909 910 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA 911 [Matt Caswell] 912 913 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases. 914 [Ingo Schwarze, Rich Salz] 915 916 *) Added output of accepting IP address and port for 'openssl s_server' 917 [Richard Levitte] 918 919 *) Added a new API for TLSv1.3 ciphersuites: 920 SSL_CTX_set_ciphersuites() 921 SSL_set_ciphersuites() 922 [Matt Caswell] 923 924 *) Memory allocation failures consistently add an error to the error 925 stack. 926 [Rich Salz] 927 928 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values 929 in libcrypto when run as setuid/setgid. 930 [Bernd Edlinger] 931 932 *) Load any config file by default when libssl is used. 933 [Matt Caswell] 934 935 *) Added new public header file <openssl/rand_drbg.h> and documentation 936 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview. 937 [Matthias St. Pierre] 938 939 *) QNX support removed (cannot find contributors to get their approval 940 for the license change). 941 [Rich Salz] 942 943 *) TLSv1.3 replay protection for early data has been implemented. See the 944 SSL_read_early_data() man page for further details. 945 [Matt Caswell] 946 947 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite 948 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and 949 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3. 950 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration 951 would otherwise inadvertently disable all TLSv1.3 ciphersuites the 952 configuration has been separated out. See the ciphers man page or the 953 SSL_CTX_set_ciphersuites() man page for more information. 954 [Matt Caswell] 955 956 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running 957 in responder mode now supports the new "-multi" option, which 958 spawns the specified number of child processes to handle OCSP 959 requests. The "-timeout" option now also limits the OCSP 960 responder's patience to wait to receive the full client request 961 on a newly accepted connection. Child processes are respawned 962 as needed, and the CA index file is automatically reloaded 963 when changed. This makes it possible to run the "ocsp" responder 964 as a long-running service, making the OpenSSL CA somewhat more 965 feature-complete. In this mode, most diagnostic messages logged 966 after entering the event loop are logged via syslog(3) rather than 967 written to stderr. 968 [Viktor Dukhovni] 969 970 *) Added support for X448 and Ed448. Heavily based on original work by 971 Mike Hamburg. 972 [Matt Caswell] 973 974 *) Extend OSSL_STORE with capabilities to search and to narrow the set of 975 objects loaded. This adds the functions OSSL_STORE_expect() and 976 OSSL_STORE_find() as well as needed tools to construct searches and 977 get the search data out of them. 978 [Richard Levitte] 979 980 *) Support for TLSv1.3 added. Note that users upgrading from an earlier 981 version of OpenSSL should review their configuration settings to ensure 982 that they are still appropriate for TLSv1.3. For further information see: 983 https://wiki.openssl.org/index.php/TLS1.3 984 [Matt Caswell] 985 986 *) Grand redesign of the OpenSSL random generator 987 988 The default RAND method now utilizes an AES-CTR DRBG according to 989 NIST standard SP 800-90Ar1. The new random generator is essentially 990 a port of the default random generator from the OpenSSL FIPS 2.0 991 object module. It is a hybrid deterministic random bit generator 992 using an AES-CTR bit stream and which seeds and reseeds itself 993 automatically using trusted system entropy sources. 994 995 Some of its new features are: 996 o Support for multiple DRBG instances with seed chaining. 997 o The default RAND method makes use of a DRBG. 998 o There is a public and private DRBG instance. 999 o The DRBG instances are fork-safe. 1000 o Keep all global DRBG instances on the secure heap if it is enabled. 1001 o The public and private DRBG instance are per thread for lock free 1002 operation 1003 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre] 1004 1005 *) Changed Configure so it only says what it does and doesn't dump 1006 so much data. Instead, ./configdata.pm should be used as a script 1007 to display all sorts of configuration data. 1008 [Richard Levitte] 1009 1010 *) Added processing of "make variables" to Configure. 1011 [Richard Levitte] 1012 1013 *) Added SHA512/224 and SHA512/256 algorithm support. 1014 [Paul Dale] 1015 1016 *) The last traces of Netware support, first removed in 1.1.0, have 1017 now been removed. 1018 [Rich Salz] 1019 1020 *) Get rid of Makefile.shared, and in the process, make the processing 1021 of certain files (rc.obj, or the .def/.map/.opt files produced from 1022 the ordinal files) more visible and hopefully easier to trace and 1023 debug (or make silent). 1024 [Richard Levitte] 1025 1026 *) Make it possible to have environment variable assignments as 1027 arguments to config / Configure. 1028 [Richard Levitte] 1029 1030 *) Add multi-prime RSA (RFC 8017) support. 1031 [Paul Yang] 1032 1033 *) Add SM3 implemented according to GB/T 32905-2016 1034 [ Jack Lloyd <jack.lloyd@ribose.com>, 1035 Ronald Tse <ronald.tse@ribose.com>, 1036 Erick Borsboom <erick.borsboom@ribose.com> ] 1037 1038 *) Add 'Maximum Fragment Length' TLS extension negotiation and support 1039 as documented in RFC6066. 1040 Based on a patch from Tomasz Moń 1041 [Filipe Raimundo da Silva] 1042 1043 *) Add SM4 implemented according to GB/T 32907-2016. 1044 [ Jack Lloyd <jack.lloyd@ribose.com>, 1045 Ronald Tse <ronald.tse@ribose.com>, 1046 Erick Borsboom <erick.borsboom@ribose.com> ] 1047 1048 *) Reimplement -newreq-nodes and ERR_error_string_n; the 1049 original author does not agree with the license change. 1050 [Rich Salz] 1051 1052 *) Add ARIA AEAD TLS support. 1053 [Jon Spillett] 1054 1055 *) Some macro definitions to support VS6 have been removed. Visual 1056 Studio 6 has not worked since 1.1.0 1057 [Rich Salz] 1058 1059 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark 1060 without clearing the errors. 1061 [Richard Levitte] 1062 1063 *) Add "atfork" functions. If building on a system that without 1064 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application 1065 requirements. The RAND facility now uses/requires this. 1066 [Rich Salz] 1067 1068 *) Add SHA3. 1069 [Andy Polyakov] 1070 1071 *) The UI API becomes a permanent and integral part of libcrypto, i.e. 1072 not possible to disable entirely. However, it's still possible to 1073 disable the console reading UI method, UI_OpenSSL() (use UI_null() 1074 as a fallback). 1075 1076 To disable, configure with 'no-ui-console'. 'no-ui' is still 1077 possible to use as an alias. Check at compile time with the 1078 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still 1079 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE. 1080 [Richard Levitte] 1081 1082 *) Add a STORE module, which implements a uniform and URI based reader of 1083 stores that can contain keys, certificates, CRLs and numerous other 1084 objects. The main API is loosely based on a few stdio functions, 1085 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof, 1086 OSSL_STORE_error and OSSL_STORE_close. 1087 The implementation uses backends called "loaders" to implement arbitrary 1088 URI schemes. There is one built in "loader" for the 'file' scheme. 1089 [Richard Levitte] 1090 1091 *) Add devcrypto engine. This has been implemented against cryptodev-linux, 1092 then adjusted to work on FreeBSD 8.4 as well. 1093 Enable by configuring with 'enable-devcryptoeng'. This is done by default 1094 on BSD implementations, as cryptodev.h is assumed to exist on all of them. 1095 [Richard Levitte] 1096 1097 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects 1098 util/mkerr.pl, which is adapted to allow those prefixes, leading to 1099 error code calls like this: 1100 1101 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER); 1102 1103 With this change, we claim the namespaces OSSL and OPENSSL in a manner 1104 that can be encoded in C. For the foreseeable future, this will only 1105 affect new modules. 1106 [Richard Levitte and Tim Hudson] 1107 1108 *) Removed BSD cryptodev engine. 1109 [Rich Salz] 1110 1111 *) Add a build target 'build_all_generated', to build all generated files 1112 and only that. This can be used to prepare everything that requires 1113 things like perl for a system that lacks perl and then move everything 1114 to that system and do the rest of the build there. 1115 [Richard Levitte] 1116 1117 *) In the UI interface, make it possible to duplicate the user data. This 1118 can be used by engines that need to retain the data for a longer time 1119 than just the call where this user data is passed. 1120 [Richard Levitte] 1121 1122 *) Ignore the '-named_curve auto' value for compatibility of applications 1123 with OpenSSL 1.0.2. 1124 [Tomas Mraz <tmraz@fedoraproject.org>] 1125 1126 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2 1127 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such 1128 alerts across multiple records (some of which could be empty). In practice 1129 it make no sense to send an empty alert record, or to fragment one. TLSv1.3 1130 prohibits this altogether and other libraries (BoringSSL, NSS) do not 1131 support this at all. Supporting it adds significant complexity to the 1132 record layer, and its removal is unlikely to cause interoperability 1133 issues. 1134 [Matt Caswell] 1135 1136 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed 1137 with Z. These are meant to replace LONG and ZLONG and to be size safe. 1138 The use of LONG and ZLONG is discouraged and scheduled for deprecation 1139 in OpenSSL 1.2.0. 1140 [Richard Levitte] 1141 1142 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string, 1143 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t. 1144 [Richard Levitte, Andy Polyakov] 1145 1146 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine() 1147 does for RSA, etc. 1148 [Richard Levitte] 1149 1150 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target 1151 platform rather than 'mingw'. 1152 [Richard Levitte] 1153 1154 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return 1155 success if they are asked to add an object which already exists 1156 in the store. This change cascades to other functions which load 1157 certificates and CRLs. 1158 [Paul Dale] 1159 1160 *) x86_64 assembly pack: annotate code with DWARF CFI directives to 1161 facilitate stack unwinding even from assembly subroutines. 1162 [Andy Polyakov] 1163 1164 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN. 1165 Also remove OPENSSL_GLOBAL entirely, as it became a no-op. 1166 [Richard Levitte] 1167 1168 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c. 1169 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1, 1170 which is the minimum version we support. 1171 [Richard Levitte] 1172 1173 *) Certificate time validation (X509_cmp_time) enforces stricter 1174 compliance with RFC 5280. Fractional seconds and timezone offsets 1175 are no longer allowed. 1176 [Emilia Käsper] 1177 1178 *) Add support for ARIA 1179 [Paul Dale] 1180 1181 *) s_client will now send the Server Name Indication (SNI) extension by 1182 default unless the new "-noservername" option is used. The server name is 1183 based on the host provided to the "-connect" option unless overridden by 1184 using "-servername". 1185 [Matt Caswell] 1186 1187 *) Add support for SipHash 1188 [Todd Short] 1189 1190 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0 1191 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to 1192 prevent issues where no progress is being made and the peer continually 1193 sends unrecognised record types, using up resources processing them. 1194 [Matt Caswell] 1195 1196 *) 'openssl passwd' can now produce SHA256 and SHA512 based output, 1197 using the algorithm defined in 1198 https://www.akkadia.org/drepper/SHA-crypt.txt 1199 [Richard Levitte] 1200 1201 *) Heartbeat support has been removed; the ABI is changed for now. 1202 [Richard Levitte, Rich Salz] 1203 1204 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd. 1205 [Emilia Käsper] 1206 1207 *) The RSA "null" method, which was partially supported to avoid patent 1208 issues, has been replaced to always returns NULL. 1209 [Rich Salz] 1210 1211 1212 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx] 1213 1214 *) Client DoS due to large DH parameter 1215 1216 During key agreement in a TLS handshake using a DH(E) based ciphersuite a 1217 malicious server can send a very large prime value to the client. This will 1218 cause the client to spend an unreasonably long period of time generating a 1219 key for this prime resulting in a hang until the client has finished. This 1220 could be exploited in a Denial Of Service attack. 1221 1222 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken 1223 (CVE-2018-0732) 1224 [Guido Vranken] 1225 1226 *) Cache timing vulnerability in RSA Key Generation 1227 1228 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to 1229 a cache timing side channel attack. An attacker with sufficient access to 1230 mount cache timing attacks during the RSA key generation process could 1231 recover the private key. 1232 1233 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera 1234 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia. 1235 (CVE-2018-0737) 1236 [Billy Brumley] 1237 1238 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str 1239 parameter is no longer accepted, as it leads to a corrupt table. NULL 1240 pem_str is reserved for alias entries only. 1241 [Richard Levitte] 1242 1243 *) Revert blinding in ECDSA sign and instead make problematic addition 1244 length-invariant. Switch even to fixed-length Montgomery multiplication. 1245 [Andy Polyakov] 1246 1247 *) Change generating and checking of primes so that the error rate of not 1248 being prime depends on the intended use based on the size of the input. 1249 For larger primes this will result in more rounds of Miller-Rabin. 1250 The maximal error rate for primes with more than 1080 bits is lowered 1251 to 2^-128. 1252 [Kurt Roeckx, Annie Yousar] 1253 1254 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64. 1255 [Kurt Roeckx] 1256 1257 *) Add blinding to ECDSA and DSA signatures to protect against side channel 1258 attacks discovered by Keegan Ryan (NCC Group). 1259 [Matt Caswell] 1260 1261 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we 1262 now allow empty (zero character) pass phrases. 1263 [Richard Levitte] 1264 1265 *) Certificate time validation (X509_cmp_time) enforces stricter 1266 compliance with RFC 5280. Fractional seconds and timezone offsets 1267 are no longer allowed. 1268 [Emilia Käsper] 1269 1270 *) Fixed a text canonicalisation bug in CMS 1271 1272 Where a CMS detached signature is used with text content the text goes 1273 through a canonicalisation process first prior to signing or verifying a 1274 signature. This process strips trailing space at the end of lines, converts 1275 line terminators to CRLF and removes additional trailing line terminators 1276 at the end of a file. A bug in the canonicalisation process meant that 1277 some characters, such as form-feed, were incorrectly treated as whitespace 1278 and removed. This is contrary to the specification (RFC5485). This fix 1279 could mean that detached text data signed with an earlier version of 1280 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data 1281 signed with a fixed OpenSSL may fail to verify with an earlier version of 1282 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data 1283 and use the "-binary" flag (for the "cms" command line application) or set 1284 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()). 1285 [Matt Caswell] 1286 1287 Changes between 1.1.0g and 1.1.0h [27 Mar 2018] 1288 1289 *) Constructed ASN.1 types with a recursive definition could exceed the stack 1290 1291 Constructed ASN.1 types with a recursive definition (such as can be found 1292 in PKCS7) could eventually exceed the stack given malicious input with 1293 excessive recursion. This could result in a Denial Of Service attack. There 1294 are no such structures used within SSL/TLS that come from untrusted sources 1295 so this is considered safe. 1296 1297 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz 1298 project. 1299 (CVE-2018-0739) 1300 [Matt Caswell] 1301 1302 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC 1303 1304 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is 1305 effectively reduced to only comparing the least significant bit of each 1306 byte. This allows an attacker to forge messages that would be considered as 1307 authenticated in an amount of tries lower than that guaranteed by the 1308 security claims of the scheme. The module can only be compiled by the 1309 HP-UX assembler, so that only HP-UX PA-RISC targets are affected. 1310 1311 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg 1312 (IBM). 1313 (CVE-2018-0733) 1314 [Andy Polyakov] 1315 1316 *) Add a build target 'build_all_generated', to build all generated files 1317 and only that. This can be used to prepare everything that requires 1318 things like perl for a system that lacks perl and then move everything 1319 to that system and do the rest of the build there. 1320 [Richard Levitte] 1321 1322 *) Backport SSL_OP_NO_RENGOTIATION 1323 1324 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the 1325 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity 1326 changes this is no longer possible in 1.1.0. Therefore the new 1327 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to 1328 1.1.0 to provide equivalent functionality. 1329 1330 Note that if an application built against 1.1.0h headers (or above) is run 1331 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be 1332 accepted but nothing will happen, i.e. renegotiation will not be prevented. 1333 [Matt Caswell] 1334 1335 *) Removed the OS390-Unix config target. It relied on a script that doesn't 1336 exist. 1337 [Rich Salz] 1338 1339 *) rsaz_1024_mul_avx2 overflow bug on x86_64 1340 1341 There is an overflow bug in the AVX2 Montgomery multiplication procedure 1342 used in exponentiation with 1024-bit moduli. No EC algorithms are affected. 1343 Analysis suggests that attacks against RSA and DSA as a result of this 1344 defect would be very difficult to perform and are not believed likely. 1345 Attacks against DH1024 are considered just feasible, because most of the 1346 work necessary to deduce information about a private key may be performed 1347 offline. The amount of resources required for such an attack would be 1348 significant. However, for an attack on TLS to be meaningful, the server 1349 would have to share the DH1024 private key among multiple clients, which is 1350 no longer an option since CVE-2016-0701. 1351 1352 This only affects processors that support the AVX2 but not ADX extensions 1353 like Intel Haswell (4th generation). 1354 1355 This issue was reported to OpenSSL by David Benjamin (Google). The issue 1356 was originally found via the OSS-Fuzz project. 1357 (CVE-2017-3738) 1358 [Andy Polyakov] 1359 1360 Changes between 1.1.0f and 1.1.0g [2 Nov 2017] 1361 1362 *) bn_sqrx8x_internal carry bug on x86_64 1363 1364 There is a carry propagating bug in the x86_64 Montgomery squaring 1365 procedure. No EC algorithms are affected. Analysis suggests that attacks 1366 against RSA and DSA as a result of this defect would be very difficult to 1367 perform and are not believed likely. Attacks against DH are considered just 1368 feasible (although very difficult) because most of the work necessary to 1369 deduce information about a private key may be performed offline. The amount 1370 of resources required for such an attack would be very significant and 1371 likely only accessible to a limited number of attackers. An attacker would 1372 additionally need online access to an unpatched system using the target 1373 private key in a scenario with persistent DH parameters and a private 1374 key that is shared between multiple clients. 1375 1376 This only affects processors that support the BMI1, BMI2 and ADX extensions 1377 like Intel Broadwell (5th generation) and later or AMD Ryzen. 1378 1379 This issue was reported to OpenSSL by the OSS-Fuzz project. 1380 (CVE-2017-3736) 1381 [Andy Polyakov] 1382 1383 *) Malformed X.509 IPAddressFamily could cause OOB read 1384 1385 If an X.509 certificate has a malformed IPAddressFamily extension, 1386 OpenSSL could do a one-byte buffer overread. The most likely result 1387 would be an erroneous display of the certificate in text format. 1388 1389 This issue was reported to OpenSSL by the OSS-Fuzz project. 1390 (CVE-2017-3735) 1391 [Rich Salz] 1392 1393 Changes between 1.1.0e and 1.1.0f [25 May 2017] 1394 1395 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target 1396 platform rather than 'mingw'. 1397 [Richard Levitte] 1398 1399 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c. 1400 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1, 1401 which is the minimum version we support. 1402 [Richard Levitte] 1403 1404 Changes between 1.1.0d and 1.1.0e [16 Feb 2017] 1405 1406 *) Encrypt-Then-Mac renegotiation crash 1407 1408 During a renegotiation handshake if the Encrypt-Then-Mac extension is 1409 negotiated where it was not in the original handshake (or vice-versa) then 1410 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients 1411 and servers are affected. 1412 1413 This issue was reported to OpenSSL by Joe Orton (Red Hat). 1414 (CVE-2017-3733) 1415 [Matt Caswell] 1416 1417 Changes between 1.1.0c and 1.1.0d [26 Jan 2017] 1418 1419 *) Truncated packet could crash via OOB read 1420 1421 If one side of an SSL/TLS path is running on a 32-bit host and a specific 1422 cipher is being used, then a truncated packet can cause that host to 1423 perform an out-of-bounds read, usually resulting in a crash. 1424 1425 This issue was reported to OpenSSL by Robert Święcki of Google. 1426 (CVE-2017-3731) 1427 [Andy Polyakov] 1428 1429 *) Bad (EC)DHE parameters cause a client crash 1430 1431 If a malicious server supplies bad parameters for a DHE or ECDHE key 1432 exchange then this can result in the client attempting to dereference a 1433 NULL pointer leading to a client crash. This could be exploited in a Denial 1434 of Service attack. 1435 1436 This issue was reported to OpenSSL by Guido Vranken. 1437 (CVE-2017-3730) 1438 [Matt Caswell] 1439 1440 *) BN_mod_exp may produce incorrect results on x86_64 1441 1442 There is a carry propagating bug in the x86_64 Montgomery squaring 1443 procedure. No EC algorithms are affected. Analysis suggests that attacks 1444 against RSA and DSA as a result of this defect would be very difficult to 1445 perform and are not believed likely. Attacks against DH are considered just 1446 feasible (although very difficult) because most of the work necessary to 1447 deduce information about a private key may be performed offline. The amount 1448 of resources required for such an attack would be very significant and 1449 likely only accessible to a limited number of attackers. An attacker would 1450 additionally need online access to an unpatched system using the target 1451 private key in a scenario with persistent DH parameters and a private 1452 key that is shared between multiple clients. For example this can occur by 1453 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very 1454 similar to CVE-2015-3193 but must be treated as a separate problem. 1455 1456 This issue was reported to OpenSSL by the OSS-Fuzz project. 1457 (CVE-2017-3732) 1458 [Andy Polyakov] 1459 1460 Changes between 1.1.0b and 1.1.0c [10 Nov 2016] 1461 1462 *) ChaCha20/Poly1305 heap-buffer-overflow 1463 1464 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to 1465 a DoS attack by corrupting larger payloads. This can result in an OpenSSL 1466 crash. This issue is not considered to be exploitable beyond a DoS. 1467 1468 This issue was reported to OpenSSL by Robert Święcki (Google Security Team) 1469 (CVE-2016-7054) 1470 [Richard Levitte] 1471 1472 *) CMS Null dereference 1473 1474 Applications parsing invalid CMS structures can crash with a NULL pointer 1475 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE 1476 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the 1477 structure callback if an attempt is made to free certain invalid encodings. 1478 Only CHOICE structures using a callback which do not handle NULL value are 1479 affected. 1480 1481 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure. 1482 (CVE-2016-7053) 1483 [Stephen Henson] 1484 1485 *) Montgomery multiplication may produce incorrect results 1486 1487 There is a carry propagating bug in the Broadwell-specific Montgomery 1488 multiplication procedure that handles input lengths divisible by, but 1489 longer than 256 bits. Analysis suggests that attacks against RSA, DSA 1490 and DH private keys are impossible. This is because the subroutine in 1491 question is not used in operations with the private key itself and an input 1492 of the attacker's direct choice. Otherwise the bug can manifest itself as 1493 transient authentication and key negotiation failures or reproducible 1494 erroneous outcome of public-key operations with specially crafted input. 1495 Among EC algorithms only Brainpool P-512 curves are affected and one 1496 presumably can attack ECDH key negotiation. Impact was not analyzed in 1497 detail, because pre-requisites for attack are considered unlikely. Namely 1498 multiple clients have to choose the curve in question and the server has to 1499 share the private key among them, neither of which is default behaviour. 1500 Even then only clients that chose the curve will be affected. 1501 1502 This issue was publicly reported as transient failures and was not 1503 initially recognized as a security issue. Thanks to Richard Morgan for 1504 providing reproducible case. 1505 (CVE-2016-7055) 1506 [Andy Polyakov] 1507 1508 *) Removed automatic addition of RPATH in shared libraries and executables, 1509 as this was a remainder from OpenSSL 1.0.x and isn't needed any more. 1510 [Richard Levitte] 1511 1512 Changes between 1.1.0a and 1.1.0b [26 Sep 2016] 1513 1514 *) Fix Use After Free for large message sizes 1515 1516 The patch applied to address CVE-2016-6307 resulted in an issue where if a 1517 message larger than approx 16k is received then the underlying buffer to 1518 store the incoming message is reallocated and moved. Unfortunately a 1519 dangling pointer to the old location is left which results in an attempt to 1520 write to the previously freed location. This is likely to result in a 1521 crash, however it could potentially lead to execution of arbitrary code. 1522 1523 This issue only affects OpenSSL 1.1.0a. 1524 1525 This issue was reported to OpenSSL by Robert Święcki. 1526 (CVE-2016-6309) 1527 [Matt Caswell] 1528 1529 Changes between 1.1.0 and 1.1.0a [22 Sep 2016] 1530 1531 *) OCSP Status Request extension unbounded memory growth 1532 1533 A malicious client can send an excessively large OCSP Status Request 1534 extension. If that client continually requests renegotiation, sending a 1535 large OCSP Status Request extension each time, then there will be unbounded 1536 memory growth on the server. This will eventually lead to a Denial Of 1537 Service attack through memory exhaustion. Servers with a default 1538 configuration are vulnerable even if they do not support OCSP. Builds using 1539 the "no-ocsp" build time option are not affected. 1540 1541 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 1542 (CVE-2016-6304) 1543 [Matt Caswell] 1544 1545 *) SSL_peek() hang on empty record 1546 1547 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer 1548 sends an empty record. This could be exploited by a malicious peer in a 1549 Denial Of Service attack. 1550 1551 This issue was reported to OpenSSL by Alex Gaynor. 1552 (CVE-2016-6305) 1553 [Matt Caswell] 1554 1555 *) Excessive allocation of memory in tls_get_message_header() and 1556 dtls1_preprocess_fragment() 1557 1558 A (D)TLS message includes 3 bytes for its length in the header for the 1559 message. This would allow for messages up to 16Mb in length. Messages of 1560 this length are excessive and OpenSSL includes a check to ensure that a 1561 peer is sending reasonably sized messages in order to avoid too much memory 1562 being consumed to service a connection. A flaw in the logic of version 1563 1.1.0 means that memory for the message is allocated too early, prior to 1564 the excessive message length check. Due to way memory is allocated in 1565 OpenSSL this could mean an attacker could force up to 21Mb to be allocated 1566 to service a connection. This could lead to a Denial of Service through 1567 memory exhaustion. However, the excessive message length check still takes 1568 place, and this would cause the connection to immediately fail. Assuming 1569 that the application calls SSL_free() on the failed connection in a timely 1570 manner then the 21Mb of allocated memory will then be immediately freed 1571 again. Therefore the excessive memory allocation will be transitory in 1572 nature. This then means that there is only a security impact if: 1573 1574 1) The application does not call SSL_free() in a timely manner in the event 1575 that the connection fails 1576 or 1577 2) The application is working in a constrained environment where there is 1578 very little free memory 1579 or 1580 3) The attacker initiates multiple connection attempts such that there are 1581 multiple connections in a state where memory has been allocated for the 1582 connection; SSL_free() has not yet been called; and there is insufficient 1583 memory to service the multiple requests. 1584 1585 Except in the instance of (1) above any Denial Of Service is likely to be 1586 transitory because as soon as the connection fails the memory is 1587 subsequently freed again in the SSL_free() call. However there is an 1588 increased risk during this period of application crashes due to the lack of 1589 memory - which would then mean a more serious Denial of Service. 1590 1591 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 1592 (CVE-2016-6307 and CVE-2016-6308) 1593 [Matt Caswell] 1594 1595 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler, 1596 had to be removed. Primary reason is that vendor assembler can't 1597 assemble our modules with -KPIC flag. As result it, assembly 1598 support, was not even available as option. But its lack means 1599 lack of side-channel resistant code, which is incompatible with 1600 security by todays standards. Fortunately gcc is readily available 1601 prepackaged option, which we firmly point at... 1602 [Andy Polyakov] 1603 1604 Changes between 1.0.2h and 1.1.0 [25 Aug 2016] 1605 1606 *) Windows command-line tool supports UTF-8 opt-in option for arguments 1607 and console input. Setting OPENSSL_WIN32_UTF8 environment variable 1608 (to any value) allows Windows user to access PKCS#12 file generated 1609 with Windows CryptoAPI and protected with non-ASCII password, as well 1610 as files generated under UTF-8 locale on Linux also protected with 1611 non-ASCII password. 1612 [Andy Polyakov] 1613 1614 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites 1615 have been disabled by default and removed from DEFAULT, just like RC4. 1616 See the RC4 item below to re-enable both. 1617 [Rich Salz] 1618 1619 *) The method for finding the storage location for the Windows RAND seed file 1620 has changed. First we check %RANDFILE%. If that is not set then we check 1621 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If 1622 all else fails we fall back to C:\. 1623 [Matt Caswell] 1624 1625 *) The EVP_EncryptUpdate() function has had its return type changed from void 1626 to int. A return of 0 indicates and error while a return of 1 indicates 1627 success. 1628 [Matt Caswell] 1629 1630 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and 1631 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch 1632 off the constant time implementation for RSA, DSA and DH have been made 1633 no-ops and deprecated. 1634 [Matt Caswell] 1635 1636 *) Windows RAND implementation was simplified to only get entropy by 1637 calling CryptGenRandom(). Various other RAND-related tickets 1638 were also closed. 1639 [Joseph Wylie Yandle, Rich Salz] 1640 1641 *) The stack and lhash API's were renamed to start with OPENSSL_SK_ 1642 and OPENSSL_LH_, respectively. The old names are available 1643 with API compatibility. They new names are now completely documented. 1644 [Rich Salz] 1645 1646 *) Unify TYPE_up_ref(obj) methods signature. 1647 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(), 1648 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an 1649 int (instead of void) like all others TYPE_up_ref() methods. 1650 So now these methods also check the return value of CRYPTO_atomic_add(), 1651 and the validity of object reference counter. 1652 [fdasilvayy@gmail.com] 1653 1654 *) With Windows Visual Studio builds, the .pdb files are installed 1655 alongside the installed libraries and executables. For a static 1656 library installation, ossl_static.pdb is the associate compiler 1657 generated .pdb file to be used when linking programs. 1658 [Richard Levitte] 1659 1660 *) Remove openssl.spec. Packaging files belong with the packagers. 1661 [Richard Levitte] 1662 1663 *) Automatic Darwin/OSX configuration has had a refresh, it will now 1664 recognise x86_64 architectures automatically. You can still decide 1665 to build for a different bitness with the environment variable 1666 KERNEL_BITS (can be 32 or 64), for example: 1667 1668 KERNEL_BITS=32 ./config 1669 1670 [Richard Levitte] 1671 1672 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0, 1673 256 bit AES and HMAC with SHA256. 1674 [Steve Henson] 1675 1676 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only). 1677 [Andy Polyakov] 1678 1679 *) Triple-DES ciphers have been moved from HIGH to MEDIUM. 1680 [Rich Salz] 1681 1682 *) To enable users to have their own config files and build file templates, 1683 Configure looks in the directory indicated by the environment variable 1684 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/ 1685 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical 1686 name and is used as is. 1687 [Richard Levitte] 1688 1689 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX, 1690 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type 1691 X509_CERT_FILE_CTX was removed. 1692 [Rich Salz] 1693 1694 *) "shared" builds are now the default. To create only static libraries use 1695 the "no-shared" Configure option. 1696 [Matt Caswell] 1697 1698 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options. 1699 All of these option have not worked for some while and are fundamental 1700 algorithms. 1701 [Matt Caswell] 1702 1703 *) Make various cleanup routines no-ops and mark them as deprecated. Most 1704 global cleanup functions are no longer required because they are handled 1705 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages). 1706 Explicitly de-initing can cause problems (e.g. where a library that uses 1707 OpenSSL de-inits, but an application is still using it). The affected 1708 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(), 1709 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(), 1710 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and 1711 COMP_zlib_cleanup(). 1712 [Matt Caswell] 1713 1714 *) --strict-warnings no longer enables runtime debugging options 1715 such as REF_DEBUG. Instead, debug options are automatically 1716 enabled with '--debug' builds. 1717 [Andy Polyakov, Emilia Käsper] 1718 1719 *) Made DH and DH_METHOD opaque. The structures for managing DH objects 1720 have been moved out of the public header files. New functions for managing 1721 these have been added. 1722 [Matt Caswell] 1723 1724 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA 1725 objects have been moved out of the public header files. New 1726 functions for managing these have been added. 1727 [Richard Levitte] 1728 1729 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects 1730 have been moved out of the public header files. New functions for managing 1731 these have been added. 1732 [Matt Caswell] 1733 1734 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been 1735 moved out of the public header files. New functions for managing these 1736 have been added. 1737 [Matt Caswell] 1738 1739 *) Removed no-rijndael as a config option. Rijndael is an old name for AES. 1740 [Matt Caswell] 1741 1742 *) Removed the mk1mf build scripts. 1743 [Richard Levitte] 1744 1745 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so 1746 it is always safe to #include a header now. 1747 [Rich Salz] 1748 1749 *) Removed the aged BC-32 config and all its supporting scripts 1750 [Richard Levitte] 1751 1752 *) Removed support for Ultrix, Netware, and OS/2. 1753 [Rich Salz] 1754 1755 *) Add support for HKDF. 1756 [Alessandro Ghedini] 1757 1758 *) Add support for blake2b and blake2s 1759 [Bill Cox] 1760 1761 *) Added support for "pipelining". Ciphers that have the 1762 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple 1763 encryptions/decryptions simultaneously. There are currently no built-in 1764 ciphers with this property but the expectation is that engines will be able 1765 to offer it to significantly improve throughput. Support has been extended 1766 into libssl so that multiple records for a single connection can be 1767 processed in one go (for >=TLS 1.1). 1768 [Matt Caswell] 1769 1770 *) Added the AFALG engine. This is an async capable engine which is able to 1771 offload work to the Linux kernel. In this initial version it only supports 1772 AES128-CBC. The kernel must be version 4.1.0 or greater. 1773 [Catriona Lucey] 1774 1775 *) OpenSSL now uses a new threading API. It is no longer necessary to 1776 set locking callbacks to use OpenSSL in a multi-threaded environment. There 1777 are two supported threading models: pthreads and windows threads. It is 1778 also possible to configure OpenSSL at compile time for "no-threads". The 1779 old threading API should no longer be used. The functions have been 1780 replaced with "no-op" compatibility macros. 1781 [Alessandro Ghedini, Matt Caswell] 1782 1783 *) Modify behavior of ALPN to invoke callback after SNI/servername 1784 callback, such that updates to the SSL_CTX affect ALPN. 1785 [Todd Short] 1786 1787 *) Add SSL_CIPHER queries for authentication and key-exchange. 1788 [Todd Short] 1789 1790 *) Changes to the DEFAULT cipherlist: 1791 - Prefer (EC)DHE handshakes over plain RSA. 1792 - Prefer AEAD ciphers over legacy ciphers. 1793 - Prefer ECDSA over RSA when both certificates are available. 1794 - Prefer TLSv1.2 ciphers/PRF. 1795 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the 1796 default cipherlist. 1797 [Emilia Käsper] 1798 1799 *) Change the ECC default curve list to be this, in order: x25519, 1800 secp256r1, secp521r1, secp384r1. 1801 [Rich Salz] 1802 1803 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are 1804 disabled by default. They can be re-enabled using the 1805 enable-weak-ssl-ciphers option to Configure. 1806 [Matt Caswell] 1807 1808 *) If the server has ALPN configured, but supports no protocols that the 1809 client advertises, send a fatal "no_application_protocol" alert. 1810 This behaviour is SHALL in RFC 7301, though it isn't universally 1811 implemented by other servers. 1812 [Emilia Käsper] 1813 1814 *) Add X25519 support. 1815 Add ASN.1 and EVP_PKEY methods for X25519. This includes support 1816 for public and private key encoding using the format documented in 1817 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports 1818 key generation and key derivation. 1819 1820 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses 1821 X25519(29). 1822 [Steve Henson] 1823 1824 *) Deprecate SRP_VBASE_get_by_user. 1825 SRP_VBASE_get_by_user had inconsistent memory management behaviour. 1826 In order to fix an unavoidable memory leak (CVE-2016-0798), 1827 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP 1828 seed, even if the seed is configured. 1829 1830 Users should use SRP_VBASE_get1_by_user instead. Note that in 1831 SRP_VBASE_get1_by_user, caller must free the returned value. Note 1832 also that even though configuring the SRP seed attempts to hide 1833 invalid usernames by continuing the handshake with fake 1834 credentials, this behaviour is not constant time and no strong 1835 guarantees are made that the handshake is indistinguishable from 1836 that of a valid user. 1837 [Emilia Käsper] 1838 1839 *) Configuration change; it's now possible to build dynamic engines 1840 without having to build shared libraries and vice versa. This 1841 only applies to the engines in engines/, those in crypto/engine/ 1842 will always be built into libcrypto (i.e. "static"). 1843 1844 Building dynamic engines is enabled by default; to disable, use 1845 the configuration option "disable-dynamic-engine". 1846 1847 The only requirements for building dynamic engines are the 1848 presence of the DSO module and building with position independent 1849 code, so they will also automatically be disabled if configuring 1850 with "disable-dso" or "disable-pic". 1851 1852 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE 1853 are also taken away from openssl/opensslconf.h, as they are 1854 irrelevant. 1855 [Richard Levitte] 1856 1857 *) Configuration change; if there is a known flag to compile 1858 position independent code, it will always be applied on the 1859 libcrypto and libssl object files, and never on the application 1860 object files. This means other libraries that use routines from 1861 libcrypto / libssl can be made into shared libraries regardless 1862 of how OpenSSL was configured. 1863 1864 If this isn't desirable, the configuration options "disable-pic" 1865 or "no-pic" can be used to disable the use of PIC. This will 1866 also disable building shared libraries and dynamic engines. 1867 [Richard Levitte] 1868 1869 *) Removed JPAKE code. It was experimental and has no wide use. 1870 [Rich Salz] 1871 1872 *) The INSTALL_PREFIX Makefile variable has been renamed to 1873 DESTDIR. That makes for less confusion on what this variable 1874 is for. Also, the configuration option --install_prefix is 1875 removed. 1876 [Richard Levitte] 1877 1878 *) Heartbeat for TLS has been removed and is disabled by default 1879 for DTLS; configure with enable-heartbeats. Code that uses the 1880 old #define's might need to be updated. 1881 [Emilia Käsper, Rich Salz] 1882 1883 *) Rename REF_CHECK to REF_DEBUG. 1884 [Rich Salz] 1885 1886 *) New "unified" build system 1887 1888 The "unified" build system is aimed to be a common system for all 1889 platforms we support. With it comes new support for VMS. 1890 1891 This system builds supports building in a different directory tree 1892 than the source tree. It produces one Makefile (for unix family 1893 or lookalikes), or one descrip.mms (for VMS). 1894 1895 The source of information to make the Makefile / descrip.mms is 1896 small files called 'build.info', holding the necessary 1897 information for each directory with source to compile, and a 1898 template in Configurations, like unix-Makefile.tmpl or 1899 descrip.mms.tmpl. 1900 1901 With this change, the library names were also renamed on Windows 1902 and on VMS. They now have names that are closer to the standard 1903 on Unix, and include the major version number, and in certain 1904 cases, the architecture they are built for. See "Notes on shared 1905 libraries" in INSTALL. 1906 1907 We rely heavily on the perl module Text::Template. 1908 [Richard Levitte] 1909 1910 *) Added support for auto-initialisation and de-initialisation of the library. 1911 OpenSSL no longer requires explicit init or deinit routines to be called, 1912 except in certain circumstances. See the OPENSSL_init_crypto() and 1913 OPENSSL_init_ssl() man pages for further information. 1914 [Matt Caswell] 1915 1916 *) The arguments to the DTLSv1_listen function have changed. Specifically the 1917 "peer" argument is now expected to be a BIO_ADDR object. 1918 1919 *) Rewrite of BIO networking library. The BIO library lacked consistent 1920 support of IPv6, and adding it required some more extensive 1921 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types, 1922 which hold all types of addresses and chains of address information. 1923 It also introduces a new API, with functions like BIO_socket, 1924 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept. 1925 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram 1926 have been adapted accordingly. 1927 [Richard Levitte] 1928 1929 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without 1930 the leading 0-byte. 1931 [Emilia Käsper] 1932 1933 *) CRIME protection: disable compression by default, even if OpenSSL is 1934 compiled with zlib enabled. Applications can still enable compression 1935 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by 1936 using the SSL_CONF library to configure compression. 1937 [Emilia Käsper] 1938 1939 *) The signature of the session callback configured with 1940 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer 1941 was explicitly marked as 'const unsigned char*' instead of 1942 'unsigned char*'. 1943 [Emilia Käsper] 1944 1945 *) Always DPURIFY. Remove the use of uninitialized memory in the 1946 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op. 1947 [Emilia Käsper] 1948 1949 *) Removed many obsolete configuration items, including 1950 DES_PTR, DES_RISC1, DES_RISC2, DES_INT 1951 MD2_CHAR, MD2_INT, MD2_LONG 1952 BF_PTR, BF_PTR2 1953 IDEA_SHORT, IDEA_LONG 1954 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX 1955 [Rich Salz, with advice from Andy Polyakov] 1956 1957 *) Many BN internals have been moved to an internal header file. 1958 [Rich Salz with help from Andy Polyakov] 1959 1960 *) Configuration and writing out the results from it has changed. 1961 Files such as Makefile include/openssl/opensslconf.h and are now 1962 produced through general templates, such as Makefile.in and 1963 crypto/opensslconf.h.in and some help from the perl module 1964 Text::Template. 1965 1966 Also, the center of configuration information is no longer 1967 Makefile. Instead, Configure produces a perl module in 1968 configdata.pm which holds most of the config data (in the hash 1969 table %config), the target data that comes from the target 1970 configuration in one of the Configurations/*.conf files (in 1971 %target). 1972 [Richard Levitte] 1973 1974 *) To clarify their intended purposes, the Configure options 1975 --prefix and --openssldir change their semantics, and become more 1976 straightforward and less interdependent. 1977 1978 --prefix shall be used exclusively to give the location INSTALLTOP 1979 where programs, scripts, libraries, include files and manuals are 1980 going to be installed. The default is now /usr/local. 1981 1982 --openssldir shall be used exclusively to give the default 1983 location OPENSSLDIR where certificates, private keys, CRLs are 1984 managed. This is also where the default openssl.cnf gets 1985 installed. 1986 If the directory given with this option is a relative path, the 1987 values of both the --prefix value and the --openssldir value will 1988 be combined to become OPENSSLDIR. 1989 The default for --openssldir is INSTALLTOP/ssl. 1990 1991 Anyone who uses --openssldir to specify where OpenSSL is to be 1992 installed MUST change to use --prefix instead. 1993 [Richard Levitte] 1994 1995 *) The GOST engine was out of date and therefore it has been removed. An up 1996 to date GOST engine is now being maintained in an external repository. 1997 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains 1998 support for GOST ciphersuites (these are only activated if a GOST engine 1999 is present). 2000 [Matt Caswell] 2001 2002 *) EGD is no longer supported by default; use enable-egd when 2003 configuring. 2004 [Ben Kaduk and Rich Salz] 2005 2006 *) The distribution now has Makefile.in files, which are used to 2007 create Makefile's when Configure is run. *Configure must be run 2008 before trying to build now.* 2009 [Rich Salz] 2010 2011 *) The return value for SSL_CIPHER_description() for error conditions 2012 has changed. 2013 [Rich Salz] 2014 2015 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication. 2016 2017 Obtaining and performing DNSSEC validation of TLSA records is 2018 the application's responsibility. The application provides 2019 the TLSA records of its choice to OpenSSL, and these are then 2020 used to authenticate the peer. 2021 2022 The TLSA records need not even come from DNS. They can, for 2023 example, be used to implement local end-entity certificate or 2024 trust-anchor "pinning", where the "pin" data takes the form 2025 of TLSA records, which can augment or replace verification 2026 based on the usual WebPKI public certification authorities. 2027 [Viktor Dukhovni] 2028 2029 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL 2030 continues to support deprecated interfaces in default builds. 2031 However, applications are strongly advised to compile their 2032 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides 2033 the declarations of all interfaces deprecated in 0.9.8, 1.0.0 2034 or the 1.1.0 releases. 2035 2036 In environments in which all applications have been ported to 2037 not use any deprecated interfaces OpenSSL's Configure script 2038 should be used with the --api=1.1.0 option to entirely remove 2039 support for the deprecated features from the library and 2040 unconditionally disable them in the installed headers. 2041 Essentially the same effect can be achieved with the "no-deprecated" 2042 argument to Configure, except that this will always restrict 2043 the build to just the latest API, rather than a fixed API 2044 version. 2045 2046 As applications are ported to future revisions of the API, 2047 they should update their compile-time OPENSSL_API_COMPAT define 2048 accordingly, but in most cases should be able to continue to 2049 compile with later releases. 2050 2051 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are 2052 0x10000000L and 0x00908000L, respectively. However those 2053 versions did not support the OPENSSL_API_COMPAT feature, and 2054 so applications are not typically tested for explicit support 2055 of just the undeprecated features of either release. 2056 [Viktor Dukhovni] 2057 2058 *) Add support for setting the minimum and maximum supported protocol. 2059 It can bet set via the SSL_set_min_proto_version() and 2060 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and 2061 MaxProtocol. It's recommended to use the new APIs to disable 2062 protocols instead of disabling individual protocols using 2063 SSL_set_options() or SSL_CONF's Protocol. This change also 2064 removes support for disabling TLS 1.2 in the OpenSSL TLS 2065 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT. 2066 [Kurt Roeckx] 2067 2068 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl. 2069 [Andy Polyakov] 2070 2071 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD 2072 and integrates ECDSA and ECDH functionality into EC. Implementations can 2073 now redirect key generation and no longer need to convert to or from 2074 ECDSA_SIG format. 2075 2076 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just 2077 include the ec.h header file instead. 2078 [Steve Henson] 2079 2080 *) Remove support for all 40 and 56 bit ciphers. This includes all the export 2081 ciphers who are no longer supported and drops support the ephemeral RSA key 2082 exchange. The LOW ciphers currently doesn't have any ciphers in it. 2083 [Kurt Roeckx] 2084 2085 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX 2086 opaque. For HMAC_CTX, the following constructors and destructors 2087 were added: 2088 2089 HMAC_CTX *HMAC_CTX_new(void); 2090 void HMAC_CTX_free(HMAC_CTX *ctx); 2091 2092 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and 2093 destroy such methods has been added. See EVP_MD_meth_new(3) and 2094 EVP_CIPHER_meth_new(3) for documentation. 2095 2096 Additional changes: 2097 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and 2098 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and 2099 EVP_MD_CTX_reset() should be called instead to reinitialise 2100 an already created structure. 2101 2) For consistency with the majority of our object creators and 2102 destructors, EVP_MD_CTX_(create|destroy) were renamed to 2103 EVP_MD_CTX_(new|free). The old names are retained as macros 2104 for deprecated builds. 2105 [Richard Levitte] 2106 2107 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable 2108 cryptographic operations to be performed asynchronously as long as an 2109 asynchronous capable engine is used. See the ASYNC_start_job() man page for 2110 further details. Libssl has also had this capability integrated with the 2111 introduction of the new mode SSL_MODE_ASYNC and associated error 2112 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man 2113 pages. This work was developed in partnership with Intel Corp. 2114 [Matt Caswell] 2115 2116 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is 2117 always enabled now. If you want to disable the support you should 2118 exclude it using the list of supported ciphers. This also means that the 2119 "-no_ecdhe" option has been removed from s_server. 2120 [Kurt Roeckx] 2121 2122 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls 2123 SSL_{CTX_}set1_curves() which can set a list. 2124 [Kurt Roeckx] 2125 2126 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the 2127 curve you want to support using SSL_{CTX_}set1_curves(). 2128 [Kurt Roeckx] 2129 2130 *) State machine rewrite. The state machine code has been significantly 2131 refactored in order to remove much duplication of code and solve issues 2132 with the old code (see ssl/statem/README for further details). This change 2133 does have some associated API changes. Notably the SSL_state() function 2134 has been removed and replaced by SSL_get_state which now returns an 2135 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed 2136 altogether. The previous handshake states defined in ssl.h and ssl3.h have 2137 also been removed. 2138 [Matt Caswell] 2139 2140 *) All instances of the string "ssleay" in the public API were replaced 2141 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's) 2142 Some error codes related to internal RSA_eay API's were renamed. 2143 [Rich Salz] 2144 2145 *) The demo files in crypto/threads were moved to demo/threads. 2146 [Rich Salz] 2147 2148 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp, 2149 sureware and ubsec. 2150 [Matt Caswell, Rich Salz] 2151 2152 *) New ASN.1 embed macro. 2153 2154 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the 2155 structure is not allocated: it is part of the parent. That is instead of 2156 2157 FOO *x; 2158 2159 it must be: 2160 2161 FOO x; 2162 2163 This reduces memory fragmentation and make it impossible to accidentally 2164 set a mandatory field to NULL. 2165 2166 This currently only works for some fields specifically a SEQUENCE, CHOICE, 2167 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is 2168 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or 2169 SEQUENCE OF. 2170 [Steve Henson] 2171 2172 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled. 2173 [Emilia Käsper] 2174 2175 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although 2176 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also 2177 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add 2178 DES and RC4 ciphersuites. 2179 [Matt Caswell] 2180 2181 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. 2182 This changes the decoding behaviour for some invalid messages, 2183 though the change is mostly in the more lenient direction, and 2184 legacy behaviour is preserved as much as possible. 2185 [Emilia Käsper] 2186 2187 *) Fix no-stdio build. 2188 [ David Woodhouse <David.Woodhouse@intel.com> and also 2189 Ivan Nestlerode <ivan.nestlerode@sonos.com> ] 2190 2191 *) New testing framework 2192 The testing framework has been largely rewritten and is now using 2193 perl and the perl modules Test::Harness and an extended variant of 2194 Test::More called OpenSSL::Test to do its work. All test scripts in 2195 test/ have been rewritten into test recipes, and all direct calls to 2196 executables in test/Makefile have become individual recipes using the 2197 simplified testing OpenSSL::Test::Simple. 2198 2199 For documentation on our testing modules, do: 2200 2201 perldoc test/testlib/OpenSSL/Test/Simple.pm 2202 perldoc test/testlib/OpenSSL/Test.pm 2203 2204 [Richard Levitte] 2205 2206 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT 2207 are used; the latter aborts on memory leaks (usually checked on exit). 2208 Some undocumented "set malloc, etc., hooks" functions were removed 2209 and others were changed. All are now documented. 2210 [Rich Salz] 2211 2212 *) In DSA_generate_parameters_ex, if the provided seed is too short, 2213 return an error 2214 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>] 2215 2216 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites 2217 from RFC4279, RFC4785, RFC5487, RFC5489. 2218 2219 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the 2220 original RSA_PSK patch. 2221 [Steve Henson] 2222 2223 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay 2224 era flag was never set throughout the codebase (only read). Also removed 2225 SSL3_FLAGS_POP_BUFFER which was only used if 2226 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set. 2227 [Matt Caswell] 2228 2229 *) Changed the default name options in the "ca", "crl", "req" and "x509" 2230 to be "oneline" instead of "compat". 2231 [Richard Levitte] 2232 2233 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're 2234 not aware of clients that still exhibit this bug, and the workaround 2235 hasn't been working properly for a while. 2236 [Emilia Käsper] 2237 2238 *) The return type of BIO_number_read() and BIO_number_written() as well as 2239 the corresponding num_read and num_write members in the BIO structure has 2240 changed from unsigned long to uint64_t. On platforms where an unsigned 2241 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is 2242 transferred. 2243 [Matt Caswell] 2244 2245 *) Given the pervasive nature of TLS extensions it is inadvisable to run 2246 OpenSSL without support for them. It also means that maintaining 2247 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably 2248 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed. 2249 [Matt Caswell] 2250 2251 *) Removed support for the two export grade static DH ciphersuites 2252 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites 2253 were newly added (along with a number of other static DH ciphersuites) to 2254 1.0.2. However the two export ones have *never* worked since they were 2255 introduced. It seems strange in any case to be adding new export 2256 ciphersuites, and given "logjam" it also does not seem correct to fix them. 2257 [Matt Caswell] 2258 2259 *) Version negotiation has been rewritten. In particular SSLv23_method(), 2260 SSLv23_client_method() and SSLv23_server_method() have been deprecated, 2261 and turned into macros which simply call the new preferred function names 2262 TLS_method(), TLS_client_method() and TLS_server_method(). All new code 2263 should use the new names instead. Also as part of this change the ssl23.h 2264 header file has been removed. 2265 [Matt Caswell] 2266 2267 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This 2268 code and the associated standard is no longer considered fit-for-purpose. 2269 [Matt Caswell] 2270 2271 *) RT2547 was closed. When generating a private key, try to make the 2272 output file readable only by the owner. This behavior change might 2273 be noticeable when interacting with other software. 2274 2275 *) Documented all exdata functions. Added CRYPTO_free_ex_index. 2276 Added a test. 2277 [Rich Salz] 2278 2279 *) Added HTTP GET support to the ocsp command. 2280 [Rich Salz] 2281 2282 *) Changed default digest for the dgst and enc commands from MD5 to 2283 sha256 2284 [Rich Salz] 2285 2286 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead. 2287 [Matt Caswell] 2288 2289 *) Added support for TLS extended master secret from 2290 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an 2291 initial patch which was a great help during development. 2292 [Steve Henson] 2293 2294 *) All libssl internal structures have been removed from the public header 2295 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is 2296 now redundant). Users should not attempt to access internal structures 2297 directly. Instead they should use the provided API functions. 2298 [Matt Caswell] 2299 2300 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used. 2301 Access to deprecated functions can be re-enabled by running config with 2302 "enable-deprecated". In addition applications wishing to use deprecated 2303 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour 2304 will, by default, disable some transitive includes that previously existed 2305 in the header files (e.g. ec.h will no longer, by default, include bn.h) 2306 [Matt Caswell] 2307 2308 *) Added support for OCB mode. OpenSSL has been granted a patent license 2309 compatible with the OpenSSL license for use of OCB. Details are available 2310 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support 2311 for OCB can be removed by calling config with no-ocb. 2312 [Matt Caswell] 2313 2314 *) SSLv2 support has been removed. It still supports receiving a SSLv2 2315 compatible client hello. 2316 [Kurt Roeckx] 2317 2318 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz], 2319 done while fixing the error code for the key-too-small case. 2320 [Annie Yousar <a.yousar@informatik.hu-berlin.de>] 2321 2322 *) CA.sh has been removed; use CA.pl instead. 2323 [Rich Salz] 2324 2325 *) Removed old DES API. 2326 [Rich Salz] 2327 2328 *) Remove various unsupported platforms: 2329 Sony NEWS4 2330 BEOS and BEOS_R5 2331 NeXT 2332 SUNOS 2333 MPE/iX 2334 Sinix/ReliantUNIX RM400 2335 DGUX 2336 NCR 2337 Tandem 2338 Cray 2339 16-bit platforms such as WIN16 2340 [Rich Salz] 2341 2342 *) Clean up OPENSSL_NO_xxx #define's 2343 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF 2344 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx 2345 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC 2346 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160 2347 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO 2348 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY 2349 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP 2350 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK 2351 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY 2352 Remove MS_STATIC; it's a relic from platforms <32 bits. 2353 [Rich Salz] 2354 2355 *) Cleaned up dead code 2356 Remove all but one '#ifdef undef' which is to be looked at. 2357 [Rich Salz] 2358 2359 *) Clean up calling of xxx_free routines. 2360 Just like free(), fix most of the xxx_free routines to accept 2361 NULL. Remove the non-null checks from callers. Save much code. 2362 [Rich Salz] 2363 2364 *) Add secure heap for storage of private keys (when possible). 2365 Add BIO_s_secmem(), CBIGNUM, etc. 2366 Contributed by Akamai Technologies under our Corporate CLA. 2367 [Rich Salz] 2368 2369 *) Experimental support for a new, fast, unbiased prime candidate generator, 2370 bn_probable_prime_dh_coprime(). Not currently used by any prime generator. 2371 [Felix Laurie von Massenbach <felix@erbridge.co.uk>] 2372 2373 *) New output format NSS in the sess_id command line tool. This allows 2374 exporting the session id and the master key in NSS keylog format. 2375 [Martin Kaiser <martin@kaiser.cx>] 2376 2377 *) Harmonize version and its documentation. -f flag is used to display 2378 compilation flags. 2379 [mancha <mancha1@zoho.com>] 2380 2381 *) Fix eckey_priv_encode so it immediately returns an error upon a failure 2382 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue. 2383 [mancha <mancha1@zoho.com>] 2384 2385 *) Fix some double frees. These are not thought to be exploitable. 2386 [mancha <mancha1@zoho.com>] 2387 2388 *) A missing bounds check in the handling of the TLS heartbeat extension 2389 can be used to reveal up to 64k of memory to a connected client or 2390 server. 2391 2392 Thanks for Neel Mehta of Google Security for discovering this bug and to 2393 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for 2394 preparing the fix (CVE-2014-0160) 2395 [Adam Langley, Bodo Moeller] 2396 2397 *) Fix for the attack described in the paper "Recovering OpenSSL 2398 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" 2399 by Yuval Yarom and Naomi Benger. Details can be obtained from: 2400 http://eprint.iacr.org/2014/140 2401 2402 Thanks to Yuval Yarom and Naomi Benger for discovering this 2403 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) 2404 [Yuval Yarom and Naomi Benger] 2405 2406 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file(): 2407 this fixes a limitation in previous versions of OpenSSL. 2408 [Steve Henson] 2409 2410 *) Experimental encrypt-then-mac support. 2411 2412 Experimental support for encrypt then mac from 2413 draft-gutmann-tls-encrypt-then-mac-02.txt 2414 2415 To enable it set the appropriate extension number (0x42 for the test 2416 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42 2417 2418 For non-compliant peers (i.e. just about everything) this should have no 2419 effect. 2420 2421 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE. 2422 2423 [Steve Henson] 2424 2425 *) Add EVP support for key wrapping algorithms, to avoid problems with 2426 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in 2427 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap 2428 algorithms and include tests cases. 2429 [Steve Henson] 2430 2431 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for 2432 enveloped data. 2433 [Steve Henson] 2434 2435 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest, 2436 MGF1 digest and OAEP label. 2437 [Steve Henson] 2438 2439 *) Make openssl verify return errors. 2440 [Chris Palmer <palmer@google.com> and Ben Laurie] 2441 2442 *) New function ASN1_TIME_diff to calculate the difference between two 2443 ASN1_TIME structures or one structure and the current time. 2444 [Steve Henson] 2445 2446 *) Update fips_test_suite to support multiple command line options. New 2447 test to induce all self test errors in sequence and check expected 2448 failures. 2449 [Steve Henson] 2450 2451 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and 2452 sign or verify all in one operation. 2453 [Steve Henson] 2454 2455 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm 2456 test programs and fips_test_suite. Includes functionality to parse 2457 the minimal script output of fipsalgest.pl directly. 2458 [Steve Henson] 2459 2460 *) Add authorisation parameter to FIPS_module_mode_set(). 2461 [Steve Henson] 2462 2463 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves. 2464 [Steve Henson] 2465 2466 *) Use separate DRBG fields for internal and external flags. New function 2467 FIPS_drbg_health_check() to perform on demand health checking. Add 2468 generation tests to fips_test_suite with reduced health check interval to 2469 demonstrate periodic health checking. Add "nodh" option to 2470 fips_test_suite to skip very slow DH test. 2471 [Steve Henson] 2472 2473 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers 2474 based on NID. 2475 [Steve Henson] 2476 2477 *) More extensive health check for DRBG checking many more failure modes. 2478 New function FIPS_selftest_drbg_all() to handle every possible DRBG 2479 combination: call this in fips_test_suite. 2480 [Steve Henson] 2481 2482 *) Add support for canonical generation of DSA parameter 'g'. See 2483 FIPS 186-3 A.2.3. 2484 2485 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and 2486 POST to handle HMAC cases. 2487 [Steve Henson] 2488 2489 *) Add functions FIPS_module_version() and FIPS_module_version_text() 2490 to return numerical and string versions of the FIPS module number. 2491 [Steve Henson] 2492 2493 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and 2494 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented 2495 outside the validated module in the FIPS capable OpenSSL. 2496 [Steve Henson] 2497 2498 *) Minor change to DRBG entropy callback semantics. In some cases 2499 there is no multiple of the block length between min_len and 2500 max_len. Allow the callback to return more than max_len bytes 2501 of entropy but discard any extra: it is the callback's responsibility 2502 to ensure that the extra data discarded does not impact the 2503 requested amount of entropy. 2504 [Steve Henson] 2505 2506 *) Add PRNG security strength checks to RSA, DSA and ECDSA using 2507 information in FIPS186-3, SP800-57 and SP800-131A. 2508 [Steve Henson] 2509 2510 *) CCM support via EVP. Interface is very similar to GCM case except we 2511 must supply all data in one chunk (i.e. no update, final) and the 2512 message length must be supplied if AAD is used. Add algorithm test 2513 support. 2514 [Steve Henson] 2515 2516 *) Initial version of POST overhaul. Add POST callback to allow the status 2517 of POST to be monitored and/or failures induced. Modify fips_test_suite 2518 to use callback. Always run all selftests even if one fails. 2519 [Steve Henson] 2520 2521 *) XTS support including algorithm test driver in the fips_gcmtest program. 2522 Note: this does increase the maximum key length from 32 to 64 bytes but 2523 there should be no binary compatibility issues as existing applications 2524 will never use XTS mode. 2525 [Steve Henson] 2526 2527 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies 2528 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also 2529 performs algorithm blocking for unapproved PRNG types. Also do not 2530 set PRNG type in FIPS_mode_set(): leave this to the application. 2531 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with 2532 the standard OpenSSL PRNG: set additional data to a date time vector. 2533 [Steve Henson] 2534 2535 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*. 2536 This shouldn't present any incompatibility problems because applications 2537 shouldn't be using these directly and any that are will need to rethink 2538 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2 2539 [Steve Henson] 2540 2541 *) Extensive self tests and health checking required by SP800-90 DRBG. 2542 Remove strength parameter from FIPS_drbg_instantiate and always 2543 instantiate at maximum supported strength. 2544 [Steve Henson] 2545 2546 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing. 2547 [Steve Henson] 2548 2549 *) New algorithm test program fips_dhvs to handle DH primitives only testing. 2550 [Steve Henson] 2551 2552 *) New function DH_compute_key_padded() to compute a DH key and pad with 2553 leading zeroes if needed: this complies with SP800-56A et al. 2554 [Steve Henson] 2555 2556 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by 2557 anything, incomplete, subject to change and largely untested at present. 2558 [Steve Henson] 2559 2560 *) Modify fipscanisteronly build option to only build the necessary object 2561 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile. 2562 [Steve Henson] 2563 2564 *) Add experimental option FIPSSYMS to give all symbols in 2565 fipscanister.o and FIPS or fips prefix. This will avoid 2566 conflicts with future versions of OpenSSL. Add perl script 2567 util/fipsas.pl to preprocess assembly language source files 2568 and rename any affected symbols. 2569 [Steve Henson] 2570 2571 *) Add selftest checks and algorithm block of non-fips algorithms in 2572 FIPS mode. Remove DES2 from selftests. 2573 [Steve Henson] 2574 2575 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just 2576 return internal method without any ENGINE dependencies. Add new 2577 tiny fips sign and verify functions. 2578 [Steve Henson] 2579 2580 *) New build option no-ec2m to disable characteristic 2 code. 2581 [Steve Henson] 2582 2583 *) New build option "fipscanisteronly". This only builds fipscanister.o 2584 and (currently) associated fips utilities. Uses the file Makefile.fips 2585 instead of Makefile.org as the prototype. 2586 [Steve Henson] 2587 2588 *) Add some FIPS mode restrictions to GCM. Add internal IV generator. 2589 Update fips_gcmtest to use IV generator. 2590 [Steve Henson] 2591 2592 *) Initial, experimental EVP support for AES-GCM. AAD can be input by 2593 setting output buffer to NULL. The *Final function must be 2594 called although it will not retrieve any additional data. The tag 2595 can be set or retrieved with a ctrl. The IV length is by default 12 2596 bytes (96 bits) but can be set to an alternative value. If the IV 2597 length exceeds the maximum IV length (currently 16 bytes) it cannot be 2598 set before the key. 2599 [Steve Henson] 2600 2601 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the 2602 underlying do_cipher function handles all cipher semantics itself 2603 including padding and finalisation. This is useful if (for example) 2604 an ENGINE cipher handles block padding itself. The behaviour of 2605 do_cipher is subtly changed if this flag is set: the return value 2606 is the number of characters written to the output buffer (zero is 2607 no longer an error code) or a negative error code. Also if the 2608 input buffer is NULL and length 0 finalisation should be performed. 2609 [Steve Henson] 2610 2611 *) If a candidate issuer certificate is already part of the constructed 2612 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case. 2613 [Steve Henson] 2614 2615 *) Improve forward-security support: add functions 2616 2617 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure)) 2618 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure)) 2619 2620 for use by SSL/TLS servers; the callback function will be called whenever a 2621 new session is created, and gets to decide whether the session may be 2622 cached to make it resumable (return 0) or not (return 1). (As by the 2623 SSL/TLS protocol specifications, the session_id sent by the server will be 2624 empty to indicate that the session is not resumable; also, the server will 2625 not generate RFC 4507 (RFC 5077) session tickets.) 2626 2627 A simple reasonable callback implementation is to return is_forward_secure. 2628 This parameter will be set to 1 or 0 depending on the ciphersuite selected 2629 by the SSL/TLS server library, indicating whether it can provide forward 2630 security. 2631 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)] 2632 2633 *) New -verify_name option in command line utilities to set verification 2634 parameters by name. 2635 [Steve Henson] 2636 2637 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE. 2638 Add CMAC pkey methods. 2639 [Steve Henson] 2640 2641 *) Experimental renegotiation in s_server -www mode. If the client 2642 browses /reneg connection is renegotiated. If /renegcert it is 2643 renegotiated requesting a certificate. 2644 [Steve Henson] 2645 2646 *) Add an "external" session cache for debugging purposes to s_server. This 2647 should help trace issues which normally are only apparent in deployed 2648 multi-process servers. 2649 [Steve Henson] 2650 2651 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where 2652 return value is ignored. NB. The functions RAND_add(), RAND_seed(), 2653 BIO_set_cipher() and some obscure PEM functions were changed so they 2654 can now return an error. The RAND changes required a change to the 2655 RAND_METHOD structure. 2656 [Steve Henson] 2657 2658 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of 2659 a gcc attribute to warn if the result of a function is ignored. This 2660 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h 2661 whose return value is often ignored. 2662 [Steve Henson] 2663 2664 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client. 2665 These allow SCTs (signed certificate timestamps) to be requested and 2666 validated when establishing a connection. 2667 [Rob Percival <robpercival@google.com>] 2668 2669 Changes between 1.0.2g and 1.0.2h [3 May 2016] 2670 2671 *) Prevent padding oracle in AES-NI CBC MAC check 2672 2673 A MITM attacker can use a padding oracle attack to decrypt traffic 2674 when the connection uses an AES CBC cipher and the server support 2675 AES-NI. 2676 2677 This issue was introduced as part of the fix for Lucky 13 padding 2678 attack (CVE-2013-0169). The padding check was rewritten to be in 2679 constant time by making sure that always the same bytes are read and 2680 compared against either the MAC or padding bytes. But it no longer 2681 checked that there was enough data to have both the MAC and padding 2682 bytes. 2683 2684 This issue was reported by Juraj Somorovsky using TLS-Attacker. 2685 (CVE-2016-2107) 2686 [Kurt Roeckx] 2687 2688 *) Fix EVP_EncodeUpdate overflow 2689 2690 An overflow can occur in the EVP_EncodeUpdate() function which is used for 2691 Base64 encoding of binary data. If an attacker is able to supply very large 2692 amounts of input data then a length check can overflow resulting in a heap 2693 corruption. 2694 2695 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by 2696 the PEM_write_bio* family of functions. These are mainly used within the 2697 OpenSSL command line applications, so any application which processes data 2698 from an untrusted source and outputs it as a PEM file should be considered 2699 vulnerable to this issue. User applications that call these APIs directly 2700 with large amounts of untrusted data may also be vulnerable. 2701 2702 This issue was reported by Guido Vranken. 2703 (CVE-2016-2105) 2704 [Matt Caswell] 2705 2706 *) Fix EVP_EncryptUpdate overflow 2707 2708 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker 2709 is able to supply very large amounts of input data after a previous call to 2710 EVP_EncryptUpdate() with a partial block then a length check can overflow 2711 resulting in a heap corruption. Following an analysis of all OpenSSL 2712 internal usage of the EVP_EncryptUpdate() function all usage is one of two 2713 forms. The first form is where the EVP_EncryptUpdate() call is known to be 2714 the first called function after an EVP_EncryptInit(), and therefore that 2715 specific call must be safe. The second form is where the length passed to 2716 EVP_EncryptUpdate() can be seen from the code to be some small value and 2717 therefore there is no possibility of an overflow. Since all instances are 2718 one of these two forms, it is believed that there can be no overflows in 2719 internal code due to this problem. It should be noted that 2720 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths. 2721 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances 2722 of these calls have also been analysed too and it is believed there are no 2723 instances in internal usage where an overflow could occur. 2724 2725 This issue was reported by Guido Vranken. 2726 (CVE-2016-2106) 2727 [Matt Caswell] 2728 2729 *) Prevent ASN.1 BIO excessive memory allocation 2730 2731 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio() 2732 a short invalid encoding can cause allocation of large amounts of memory 2733 potentially consuming excessive resources or exhausting memory. 2734 2735 Any application parsing untrusted data through d2i BIO functions is 2736 affected. The memory based functions such as d2i_X509() are *not* affected. 2737 Since the memory based functions are used by the TLS library, TLS 2738 applications are not affected. 2739 2740 This issue was reported by Brian Carpenter. 2741 (CVE-2016-2109) 2742 [Stephen Henson] 2743 2744 *) EBCDIC overread 2745 2746 ASN1 Strings that are over 1024 bytes can cause an overread in applications 2747 using the X509_NAME_oneline() function on EBCDIC systems. This could result 2748 in arbitrary stack data being returned in the buffer. 2749 2750 This issue was reported by Guido Vranken. 2751 (CVE-2016-2176) 2752 [Matt Caswell] 2753 2754 *) Modify behavior of ALPN to invoke callback after SNI/servername 2755 callback, such that updates to the SSL_CTX affect ALPN. 2756 [Todd Short] 2757 2758 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the 2759 default. 2760 [Kurt Roeckx] 2761 2762 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the 2763 methods are enabled and ssl2 is disabled the methods return NULL. 2764 [Kurt Roeckx] 2765 2766 Changes between 1.0.2f and 1.0.2g [1 Mar 2016] 2767 2768 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL. 2769 Builds that are not configured with "enable-weak-ssl-ciphers" will not 2770 provide any "EXPORT" or "LOW" strength ciphers. 2771 [Viktor Dukhovni] 2772 2773 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2 2774 is by default disabled at build-time. Builds that are not configured with 2775 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used, 2776 users who want to negotiate SSLv2 via the version-flexible SSLv23_method() 2777 will need to explicitly call either of: 2778 2779 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2); 2780 or 2781 SSL_clear_options(ssl, SSL_OP_NO_SSLv2); 2782 2783 as appropriate. Even if either of those is used, or the application 2784 explicitly uses the version-specific SSLv2_method() or its client and 2785 server variants, SSLv2 ciphers vulnerable to exhaustive search key 2786 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT 2787 ciphers, and SSLv2 56-bit DES are no longer available. 2788 (CVE-2016-0800) 2789 [Viktor Dukhovni] 2790 2791 *) Fix a double-free in DSA code 2792 2793 A double free bug was discovered when OpenSSL parses malformed DSA private 2794 keys and could lead to a DoS attack or memory corruption for applications 2795 that receive DSA private keys from untrusted sources. This scenario is 2796 considered rare. 2797 2798 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using 2799 libFuzzer. 2800 (CVE-2016-0705) 2801 [Stephen Henson] 2802 2803 *) Disable SRP fake user seed to address a server memory leak. 2804 2805 Add a new method SRP_VBASE_get1_by_user that handles the seed properly. 2806 2807 SRP_VBASE_get_by_user had inconsistent memory management behaviour. 2808 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user 2809 was changed to ignore the "fake user" SRP seed, even if the seed 2810 is configured. 2811 2812 Users should use SRP_VBASE_get1_by_user instead. Note that in 2813 SRP_VBASE_get1_by_user, caller must free the returned value. Note 2814 also that even though configuring the SRP seed attempts to hide 2815 invalid usernames by continuing the handshake with fake 2816 credentials, this behaviour is not constant time and no strong 2817 guarantees are made that the handshake is indistinguishable from 2818 that of a valid user. 2819 (CVE-2016-0798) 2820 [Emilia Käsper] 2821 2822 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption 2823 2824 In the BN_hex2bn function the number of hex digits is calculated using an 2825 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For 2826 large values of |i| this can result in |bn_expand| not allocating any 2827 memory because |i * 4| is negative. This can leave the internal BIGNUM data 2828 field as NULL leading to a subsequent NULL ptr deref. For very large values 2829 of |i|, the calculation |i * 4| could be a positive value smaller than |i|. 2830 In this case memory is allocated to the internal BIGNUM data field, but it 2831 is insufficiently sized leading to heap corruption. A similar issue exists 2832 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn 2833 is ever called by user applications with very large untrusted hex/dec data. 2834 This is anticipated to be a rare occurrence. 2835 2836 All OpenSSL internal usage of these functions use data that is not expected 2837 to be untrusted, e.g. config file data or application command line 2838 arguments. If user developed applications generate config file data based 2839 on untrusted data then it is possible that this could also lead to security 2840 consequences. This is also anticipated to be rare. 2841 2842 This issue was reported to OpenSSL by Guido Vranken. 2843 (CVE-2016-0797) 2844 [Matt Caswell] 2845 2846 *) Fix memory issues in BIO_*printf functions 2847 2848 The internal |fmtstr| function used in processing a "%s" format string in 2849 the BIO_*printf functions could overflow while calculating the length of a 2850 string and cause an OOB read when printing very long strings. 2851 2852 Additionally the internal |doapr_outch| function can attempt to write to an 2853 OOB memory location (at an offset from the NULL pointer) in the event of a 2854 memory allocation failure. In 1.0.2 and below this could be caused where 2855 the size of a buffer to be allocated is greater than INT_MAX. E.g. this 2856 could be in processing a very long "%s" format string. Memory leaks can 2857 also occur. 2858 2859 The first issue may mask the second issue dependent on compiler behaviour. 2860 These problems could enable attacks where large amounts of untrusted data 2861 is passed to the BIO_*printf functions. If applications use these functions 2862 in this way then they could be vulnerable. OpenSSL itself uses these 2863 functions when printing out human-readable dumps of ASN.1 data. Therefore 2864 applications that print this data could be vulnerable if the data is from 2865 untrusted sources. OpenSSL command line applications could also be 2866 vulnerable where they print out ASN.1 data, or if untrusted data is passed 2867 as command line arguments. 2868 2869 Libssl is not considered directly vulnerable. Additionally certificates etc 2870 received via remote connections via libssl are also unlikely to be able to 2871 trigger these issues because of message size limits enforced within libssl. 2872 2873 This issue was reported to OpenSSL Guido Vranken. 2874 (CVE-2016-0799) 2875 [Matt Caswell] 2876 2877 *) Side channel attack on modular exponentiation 2878 2879 A side-channel attack was found which makes use of cache-bank conflicts on 2880 the Intel Sandy-Bridge microarchitecture which could lead to the recovery 2881 of RSA keys. The ability to exploit this issue is limited as it relies on 2882 an attacker who has control of code in a thread running on the same 2883 hyper-threaded core as the victim thread which is performing decryptions. 2884 2885 This issue was reported to OpenSSL by Yuval Yarom, The University of 2886 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and 2887 Nadia Heninger, University of Pennsylvania with more information at 2888 http://cachebleed.info. 2889 (CVE-2016-0702) 2890 [Andy Polyakov] 2891 2892 *) Change the req app to generate a 2048-bit RSA/DSA key by default, 2893 if no keysize is specified with default_bits. This fixes an 2894 omission in an earlier change that changed all RSA/DSA key generation 2895 apps to use 2048 bits by default. 2896 [Emilia Käsper] 2897 2898 Changes between 1.0.2e and 1.0.2f [28 Jan 2016] 2899 *) DH small subgroups 2900 2901 Historically OpenSSL only ever generated DH parameters based on "safe" 2902 primes. More recently (in version 1.0.2) support was provided for 2903 generating X9.42 style parameter files such as those required for RFC 5114 2904 support. The primes used in such files may not be "safe". Where an 2905 application is using DH configured with parameters based on primes that are 2906 not "safe" then an attacker could use this fact to find a peer's private 2907 DH exponent. This attack requires that the attacker complete multiple 2908 handshakes in which the peer uses the same private DH exponent. For example 2909 this could be used to discover a TLS server's private DH exponent if it's 2910 reusing the private DH exponent or it's using a static DH ciphersuite. 2911 2912 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in 2913 TLS. It is not on by default. If the option is not set then the server 2914 reuses the same private DH exponent for the life of the server process and 2915 would be vulnerable to this attack. It is believed that many popular 2916 applications do set this option and would therefore not be at risk. 2917 2918 The fix for this issue adds an additional check where a "q" parameter is 2919 available (as is the case in X9.42 based parameters). This detects the 2920 only known attack, and is the only possible defense for static DH 2921 ciphersuites. This could have some performance impact. 2922 2923 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by 2924 default and cannot be disabled. This could have some performance impact. 2925 2926 This issue was reported to OpenSSL by Antonio Sanso (Adobe). 2927 (CVE-2016-0701) 2928 [Matt Caswell] 2929 2930 *) SSLv2 doesn't block disabled ciphers 2931 2932 A malicious client can negotiate SSLv2 ciphers that have been disabled on 2933 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have 2934 been disabled, provided that the SSLv2 protocol was not also disabled via 2935 SSL_OP_NO_SSLv2. 2936 2937 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram 2938 and Sebastian Schinzel. 2939 (CVE-2015-3197) 2940 [Viktor Dukhovni] 2941 2942 Changes between 1.0.2d and 1.0.2e [3 Dec 2015] 2943 2944 *) BN_mod_exp may produce incorrect results on x86_64 2945 2946 There is a carry propagating bug in the x86_64 Montgomery squaring 2947 procedure. No EC algorithms are affected. Analysis suggests that attacks 2948 against RSA and DSA as a result of this defect would be very difficult to 2949 perform and are not believed likely. Attacks against DH are considered just 2950 feasible (although very difficult) because most of the work necessary to 2951 deduce information about a private key may be performed offline. The amount 2952 of resources required for such an attack would be very significant and 2953 likely only accessible to a limited number of attackers. An attacker would 2954 additionally need online access to an unpatched system using the target 2955 private key in a scenario with persistent DH parameters and a private 2956 key that is shared between multiple clients. For example this can occur by 2957 default in OpenSSL DHE based SSL/TLS ciphersuites. 2958 2959 This issue was reported to OpenSSL by Hanno Böck. 2960 (CVE-2015-3193) 2961 [Andy Polyakov] 2962 2963 *) Certificate verify crash with missing PSS parameter 2964 2965 The signature verification routines will crash with a NULL pointer 2966 dereference if presented with an ASN.1 signature using the RSA PSS 2967 algorithm and absent mask generation function parameter. Since these 2968 routines are used to verify certificate signature algorithms this can be 2969 used to crash any certificate verification operation and exploited in a 2970 DoS attack. Any application which performs certificate verification is 2971 vulnerable including OpenSSL clients and servers which enable client 2972 authentication. 2973 2974 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG). 2975 (CVE-2015-3194) 2976 [Stephen Henson] 2977 2978 *) X509_ATTRIBUTE memory leak 2979 2980 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak 2981 memory. This structure is used by the PKCS#7 and CMS routines so any 2982 application which reads PKCS#7 or CMS data from untrusted sources is 2983 affected. SSL/TLS is not affected. 2984 2985 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using 2986 libFuzzer. 2987 (CVE-2015-3195) 2988 [Stephen Henson] 2989 2990 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. 2991 This changes the decoding behaviour for some invalid messages, 2992 though the change is mostly in the more lenient direction, and 2993 legacy behaviour is preserved as much as possible. 2994 [Emilia Käsper] 2995 2996 *) In DSA_generate_parameters_ex, if the provided seed is too short, 2997 return an error 2998 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>] 2999 3000 Changes between 1.0.2c and 1.0.2d [9 Jul 2015] 3001 3002 *) Alternate chains certificate forgery 3003 3004 During certificate verification, OpenSSL will attempt to find an 3005 alternative certificate chain if the first attempt to build such a chain 3006 fails. An error in the implementation of this logic can mean that an 3007 attacker could cause certain checks on untrusted certificates to be 3008 bypassed, such as the CA flag, enabling them to use a valid leaf 3009 certificate to act as a CA and "issue" an invalid certificate. 3010 3011 This issue was reported to OpenSSL by Adam Langley/David Benjamin 3012 (Google/BoringSSL). 3013 [Matt Caswell] 3014 3015 Changes between 1.0.2b and 1.0.2c [12 Jun 2015] 3016 3017 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI 3018 incompatibility in the handling of HMAC. The previous ABI has now been 3019 restored. 3020 [Matt Caswell] 3021 3022 Changes between 1.0.2a and 1.0.2b [11 Jun 2015] 3023 3024 *) Malformed ECParameters causes infinite loop 3025 3026 When processing an ECParameters structure OpenSSL enters an infinite loop 3027 if the curve specified is over a specially malformed binary polynomial 3028 field. 3029 3030 This can be used to perform denial of service against any 3031 system which processes public keys, certificate requests or 3032 certificates. This includes TLS clients and TLS servers with 3033 client authentication enabled. 3034 3035 This issue was reported to OpenSSL by Joseph Barr-Pixton. 3036 (CVE-2015-1788) 3037 [Andy Polyakov] 3038 3039 *) Exploitable out-of-bounds read in X509_cmp_time 3040 3041 X509_cmp_time does not properly check the length of the ASN1_TIME 3042 string and can read a few bytes out of bounds. In addition, 3043 X509_cmp_time accepts an arbitrary number of fractional seconds in the 3044 time string. 3045 3046 An attacker can use this to craft malformed certificates and CRLs of 3047 various sizes and potentially cause a segmentation fault, resulting in 3048 a DoS on applications that verify certificates or CRLs. TLS clients 3049 that verify CRLs are affected. TLS clients and servers with client 3050 authentication enabled may be affected if they use custom verification 3051 callbacks. 3052 3053 This issue was reported to OpenSSL by Robert Swiecki (Google), and 3054 independently by Hanno Böck. 3055 (CVE-2015-1789) 3056 [Emilia Käsper] 3057 3058 *) PKCS7 crash with missing EnvelopedContent 3059 3060 The PKCS#7 parsing code does not handle missing inner EncryptedContent 3061 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs 3062 with missing content and trigger a NULL pointer dereference on parsing. 3063 3064 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7 3065 structures from untrusted sources are affected. OpenSSL clients and 3066 servers are not affected. 3067 3068 This issue was reported to OpenSSL by Michal Zalewski (Google). 3069 (CVE-2015-1790) 3070 [Emilia Käsper] 3071 3072 *) CMS verify infinite loop with unknown hash function 3073 3074 When verifying a signedData message the CMS code can enter an infinite loop 3075 if presented with an unknown hash function OID. This can be used to perform 3076 denial of service against any system which verifies signedData messages using 3077 the CMS code. 3078 This issue was reported to OpenSSL by Johannes Bauer. 3079 (CVE-2015-1792) 3080 [Stephen Henson] 3081 3082 *) Race condition handling NewSessionTicket 3083 3084 If a NewSessionTicket is received by a multi-threaded client when attempting to 3085 reuse a previous ticket then a race condition can occur potentially leading to 3086 a double free of the ticket data. 3087 (CVE-2015-1791) 3088 [Matt Caswell] 3089 3090 *) Only support 256-bit or stronger elliptic curves with the 3091 'ecdh_auto' setting (server) or by default (client). Of supported 3092 curves, prefer P-256 (both). 3093 [Emilia Kasper] 3094 3095 Changes between 1.0.2 and 1.0.2a [19 Mar 2015] 3096 3097 *) ClientHello sigalgs DoS fix 3098 3099 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an 3100 invalid signature algorithms extension a NULL pointer dereference will 3101 occur. This can be exploited in a DoS attack against the server. 3102 3103 This issue was was reported to OpenSSL by David Ramos of Stanford 3104 University. 3105 (CVE-2015-0291) 3106 [Stephen Henson and Matt Caswell] 3107 3108 *) Multiblock corrupted pointer fix 3109 3110 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This 3111 feature only applies on 64 bit x86 architecture platforms that support AES 3112 NI instructions. A defect in the implementation of "multiblock" can cause 3113 OpenSSL's internal write buffer to become incorrectly set to NULL when 3114 using non-blocking IO. Typically, when the user application is using a 3115 socket BIO for writing, this will only result in a failed connection. 3116 However if some other BIO is used then it is likely that a segmentation 3117 fault will be triggered, thus enabling a potential DoS attack. 3118 3119 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller. 3120 (CVE-2015-0290) 3121 [Matt Caswell] 3122 3123 *) Segmentation fault in DTLSv1_listen fix 3124 3125 The DTLSv1_listen function is intended to be stateless and processes the 3126 initial ClientHello from many peers. It is common for user code to loop 3127 over the call to DTLSv1_listen until a valid ClientHello is received with 3128 an associated cookie. A defect in the implementation of DTLSv1_listen means 3129 that state is preserved in the SSL object from one invocation to the next 3130 that can lead to a segmentation fault. Errors processing the initial 3131 ClientHello can trigger this scenario. An example of such an error could be 3132 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only 3133 server. 3134 3135 This issue was reported to OpenSSL by Per Allansson. 3136 (CVE-2015-0207) 3137 [Matt Caswell] 3138 3139 *) Segmentation fault in ASN1_TYPE_cmp fix 3140 3141 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is 3142 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check 3143 certificate signature algorithm consistency this can be used to crash any 3144 certificate verification operation and exploited in a DoS attack. Any 3145 application which performs certificate verification is vulnerable including 3146 OpenSSL clients and servers which enable client authentication. 3147 (CVE-2015-0286) 3148 [Stephen Henson] 3149 3150 *) Segmentation fault for invalid PSS parameters fix 3151 3152 The signature verification routines will crash with a NULL pointer 3153 dereference if presented with an ASN.1 signature using the RSA PSS 3154 algorithm and invalid parameters. Since these routines are used to verify 3155 certificate signature algorithms this can be used to crash any 3156 certificate verification operation and exploited in a DoS attack. Any 3157 application which performs certificate verification is vulnerable including 3158 OpenSSL clients and servers which enable client authentication. 3159 3160 This issue was was reported to OpenSSL by Brian Carpenter. 3161 (CVE-2015-0208) 3162 [Stephen Henson] 3163 3164 *) ASN.1 structure reuse memory corruption fix 3165 3166 Reusing a structure in ASN.1 parsing may allow an attacker to cause 3167 memory corruption via an invalid write. Such reuse is and has been 3168 strongly discouraged and is believed to be rare. 3169 3170 Applications that parse structures containing CHOICE or ANY DEFINED BY 3171 components may be affected. Certificate parsing (d2i_X509 and related 3172 functions) are however not affected. OpenSSL clients and servers are 3173 not affected. 3174 (CVE-2015-0287) 3175 [Stephen Henson] 3176 3177 *) PKCS7 NULL pointer dereferences fix 3178 3179 The PKCS#7 parsing code does not handle missing outer ContentInfo 3180 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with 3181 missing content and trigger a NULL pointer dereference on parsing. 3182 3183 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or 3184 otherwise parse PKCS#7 structures from untrusted sources are 3185 affected. OpenSSL clients and servers are not affected. 3186 3187 This issue was reported to OpenSSL by Michal Zalewski (Google). 3188 (CVE-2015-0289) 3189 [Emilia Käsper] 3190 3191 *) DoS via reachable assert in SSLv2 servers fix 3192 3193 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in 3194 servers that both support SSLv2 and enable export cipher suites by sending 3195 a specially crafted SSLv2 CLIENT-MASTER-KEY message. 3196 3197 This issue was discovered by Sean Burford (Google) and Emilia Käsper 3198 (OpenSSL development team). 3199 (CVE-2015-0293) 3200 [Emilia Käsper] 3201 3202 *) Empty CKE with client auth and DHE fix 3203 3204 If client auth is used then a server can seg fault in the event of a DHE 3205 ciphersuite being selected and a zero length ClientKeyExchange message 3206 being sent by the client. This could be exploited in a DoS attack. 3207 (CVE-2015-1787) 3208 [Matt Caswell] 3209 3210 *) Handshake with unseeded PRNG fix 3211 3212 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake 3213 with an unseeded PRNG. The conditions are: 3214 - The client is on a platform where the PRNG has not been seeded 3215 automatically, and the user has not seeded manually 3216 - A protocol specific client method version has been used (i.e. not 3217 SSL_client_methodv23) 3218 - A ciphersuite is used that does not require additional random data from 3219 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA). 3220 3221 If the handshake succeeds then the client random that has been used will 3222 have been generated from a PRNG with insufficient entropy and therefore the 3223 output may be predictable. 3224 3225 For example using the following command with an unseeded openssl will 3226 succeed on an unpatched platform: 3227 3228 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA 3229 (CVE-2015-0285) 3230 [Matt Caswell] 3231 3232 *) Use After Free following d2i_ECPrivatekey error fix 3233 3234 A malformed EC private key file consumed via the d2i_ECPrivateKey function 3235 could cause a use after free condition. This, in turn, could cause a double 3236 free in several private key parsing functions (such as d2i_PrivateKey 3237 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption 3238 for applications that receive EC private keys from untrusted 3239 sources. This scenario is considered rare. 3240 3241 This issue was discovered by the BoringSSL project and fixed in their 3242 commit 517073cd4b. 3243 (CVE-2015-0209) 3244 [Matt Caswell] 3245 3246 *) X509_to_X509_REQ NULL pointer deref fix 3247 3248 The function X509_to_X509_REQ will crash with a NULL pointer dereference if 3249 the certificate key is invalid. This function is rarely used in practice. 3250 3251 This issue was discovered by Brian Carpenter. 3252 (CVE-2015-0288) 3253 [Stephen Henson] 3254 3255 *) Removed the export ciphers from the DEFAULT ciphers 3256 [Kurt Roeckx] 3257 3258 Changes between 1.0.1l and 1.0.2 [22 Jan 2015] 3259 3260 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g. 3261 ARMv5 through ARMv8, as opposite to "locking" it to single one. 3262 So far those who have to target multiple platforms would compromise 3263 and argue that binary targeting say ARMv5 would still execute on 3264 ARMv8. "Universal" build resolves this compromise by providing 3265 near-optimal performance even on newer platforms. 3266 [Andy Polyakov] 3267 3268 *) Accelerated NIST P-256 elliptic curve implementation for x86_64 3269 (other platforms pending). 3270 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov] 3271 3272 *) Add support for the SignedCertificateTimestampList certificate and 3273 OCSP response extensions from RFC6962. 3274 [Rob Stradling] 3275 3276 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 3277 for corner cases. (Certain input points at infinity could lead to 3278 bogus results, with non-infinity inputs mapped to infinity too.) 3279 [Bodo Moeller] 3280 3281 *) Initial support for PowerISA 2.0.7, first implemented in POWER8. 3282 This covers AES, SHA256/512 and GHASH. "Initial" means that most 3283 common cases are optimized and there still is room for further 3284 improvements. Vector Permutation AES for Altivec is also added. 3285 [Andy Polyakov] 3286 3287 *) Add support for little-endian ppc64 Linux target. 3288 [Marcelo Cerri (IBM)] 3289 3290 *) Initial support for AMRv8 ISA crypto extensions. This covers AES, 3291 SHA1, SHA256 and GHASH. "Initial" means that most common cases 3292 are optimized and there still is room for further improvements. 3293 Both 32- and 64-bit modes are supported. 3294 [Andy Polyakov, Ard Biesheuvel (Linaro)] 3295 3296 *) Improved ARMv7 NEON support. 3297 [Andy Polyakov] 3298 3299 *) Support for SPARC Architecture 2011 crypto extensions, first 3300 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1, 3301 SHA256/512, MD5, GHASH and modular exponentiation. 3302 [Andy Polyakov, David Miller] 3303 3304 *) Accelerated modular exponentiation for Intel processors, a.k.a. 3305 RSAZ. 3306 [Shay Gueron & Vlad Krasnov (Intel Corp)] 3307 3308 *) Support for new and upcoming Intel processors, including AVX2, 3309 BMI and SHA ISA extensions. This includes additional "stitched" 3310 implementations, AESNI-SHA256 and GCM, and multi-buffer support 3311 for TLS encrypt. 3312 3313 This work was sponsored by Intel Corp. 3314 [Andy Polyakov] 3315 3316 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method() 3317 supports both DTLS 1.2 and 1.0 and should use whatever version the peer 3318 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only. 3319 [Steve Henson] 3320 3321 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file(): 3322 this fixes a limitation in previous versions of OpenSSL. 3323 [Steve Henson] 3324 3325 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest, 3326 MGF1 digest and OAEP label. 3327 [Steve Henson] 3328 3329 *) Add EVP support for key wrapping algorithms, to avoid problems with 3330 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in 3331 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap 3332 algorithms and include tests cases. 3333 [Steve Henson] 3334 3335 *) Add functions to allocate and set the fields of an ECDSA_METHOD 3336 structure. 3337 [Douglas E. Engert, Steve Henson] 3338 3339 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the 3340 difference in days and seconds between two tm or ASN1_TIME structures. 3341 [Steve Henson] 3342 3343 *) Add -rev test option to s_server to just reverse order of characters 3344 received by client and send back to server. Also prints an abbreviated 3345 summary of the connection parameters. 3346 [Steve Henson] 3347 3348 *) New option -brief for s_client and s_server to print out a brief summary 3349 of connection parameters. 3350 [Steve Henson] 3351 3352 *) Add callbacks for arbitrary TLS extensions. 3353 [Trevor Perrin <trevp@trevp.net> and Ben Laurie] 3354 3355 *) New option -crl_download in several openssl utilities to download CRLs 3356 from CRLDP extension in certificates. 3357 [Steve Henson] 3358 3359 *) New options -CRL and -CRLform for s_client and s_server for CRLs. 3360 [Steve Henson] 3361 3362 *) New function X509_CRL_diff to generate a delta CRL from the difference 3363 of two full CRLs. Add support to "crl" utility. 3364 [Steve Henson] 3365 3366 *) New functions to set lookup_crls function and to retrieve 3367 X509_STORE from X509_STORE_CTX. 3368 [Steve Henson] 3369 3370 *) Print out deprecated issuer and subject unique ID fields in 3371 certificates. 3372 [Steve Henson] 3373 3374 *) Extend OCSP I/O functions so they can be used for simple general purpose 3375 HTTP as well as OCSP. New wrapper function which can be used to download 3376 CRLs using the OCSP API. 3377 [Steve Henson] 3378 3379 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs. 3380 [Steve Henson] 3381 3382 *) SSL_CONF* functions. These provide a common framework for application 3383 configuration using configuration files or command lines. 3384 [Steve Henson] 3385 3386 *) SSL/TLS tracing code. This parses out SSL/TLS records using the 3387 message callback and prints the results. Needs compile time option 3388 "enable-ssl-trace". New options to s_client and s_server to enable 3389 tracing. 3390 [Steve Henson] 3391 3392 *) New ctrl and macro to retrieve supported points extensions. 3393 Print out extension in s_server and s_client. 3394 [Steve Henson] 3395 3396 *) New functions to retrieve certificate signature and signature 3397 OID NID. 3398 [Steve Henson] 3399 3400 *) Add functions to retrieve and manipulate the raw cipherlist sent by a 3401 client to OpenSSL. 3402 [Steve Henson] 3403 3404 *) New Suite B modes for TLS code. These use and enforce the requirements 3405 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and 3406 only use Suite B curves. The Suite B modes can be set by using the 3407 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring. 3408 [Steve Henson] 3409 3410 *) New chain verification flags for Suite B levels of security. Check 3411 algorithms are acceptable when flags are set in X509_verify_cert. 3412 [Steve Henson] 3413 3414 *) Make tls1_check_chain return a set of flags indicating checks passed 3415 by a certificate chain. Add additional tests to handle client 3416 certificates: checks for matching certificate type and issuer name 3417 comparison. 3418 [Steve Henson] 3419 3420 *) If an attempt is made to use a signature algorithm not in the peer 3421 preference list abort the handshake. If client has no suitable 3422 signature algorithms in response to a certificate request do not 3423 use the certificate. 3424 [Steve Henson] 3425 3426 *) If server EC tmp key is not in client preference list abort handshake. 3427 [Steve Henson] 3428 3429 *) Add support for certificate stores in CERT structure. This makes it 3430 possible to have different stores per SSL structure or one store in 3431 the parent SSL_CTX. Include distinct stores for certificate chain 3432 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN 3433 to build and store a certificate chain in CERT structure: returning 3434 an error if the chain cannot be built: this will allow applications 3435 to test if a chain is correctly configured. 3436 3437 Note: if the CERT based stores are not set then the parent SSL_CTX 3438 store is used to retain compatibility with existing behaviour. 3439 3440 [Steve Henson] 3441 3442 *) New function ssl_set_client_disabled to set a ciphersuite disabled 3443 mask based on the current session, check mask when sending client 3444 hello and checking the requested ciphersuite. 3445 [Steve Henson] 3446 3447 *) New ctrls to retrieve and set certificate types in a certificate 3448 request message. Print out received values in s_client. If certificate 3449 types is not set with custom values set sensible values based on 3450 supported signature algorithms. 3451 [Steve Henson] 3452 3453 *) Support for distinct client and server supported signature algorithms. 3454 [Steve Henson] 3455 3456 *) Add certificate callback. If set this is called whenever a certificate 3457 is required by client or server. An application can decide which 3458 certificate chain to present based on arbitrary criteria: for example 3459 supported signature algorithms. Add very simple example to s_server. 3460 This fixes many of the problems and restrictions of the existing client 3461 certificate callback: for example you can now clear an existing 3462 certificate and specify the whole chain. 3463 [Steve Henson] 3464 3465 *) Add new "valid_flags" field to CERT_PKEY structure which determines what 3466 the certificate can be used for (if anything). Set valid_flags field 3467 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used 3468 to have similar checks in it. 3469 3470 Add new "cert_flags" field to CERT structure and include a "strict mode". 3471 This enforces some TLS certificate requirements (such as only permitting 3472 certificate signature algorithms contained in the supported algorithms 3473 extension) which some implementations ignore: this option should be used 3474 with caution as it could cause interoperability issues. 3475 [Steve Henson] 3476 3477 *) Update and tidy signature algorithm extension processing. Work out 3478 shared signature algorithms based on preferences and peer algorithms 3479 and print them out in s_client and s_server. Abort handshake if no 3480 shared signature algorithms. 3481 [Steve Henson] 3482 3483 *) Add new functions to allow customised supported signature algorithms 3484 for SSL and SSL_CTX structures. Add options to s_client and s_server 3485 to support them. 3486 [Steve Henson] 3487 3488 *) New function SSL_certs_clear() to delete all references to certificates 3489 from an SSL structure. Before this once a certificate had been added 3490 it couldn't be removed. 3491 [Steve Henson] 3492 3493 *) Integrate hostname, email address and IP address checking with certificate 3494 verification. New verify options supporting checking in openssl utility. 3495 [Steve Henson] 3496 3497 *) Fixes and wildcard matching support to hostname and email checking 3498 functions. Add manual page. 3499 [Florian Weimer (Red Hat Product Security Team)] 3500 3501 *) New functions to check a hostname email or IP address against a 3502 certificate. Add options x509 utility to print results of checks against 3503 a certificate. 3504 [Steve Henson] 3505 3506 *) Fix OCSP checking. 3507 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie] 3508 3509 *) Initial experimental support for explicitly trusted non-root CAs. 3510 OpenSSL still tries to build a complete chain to a root but if an 3511 intermediate CA has a trust setting included that is used. The first 3512 setting is used: whether to trust (e.g., -addtrust option to the x509 3513 utility) or reject. 3514 [Steve Henson] 3515 3516 *) Add -trusted_first option which attempts to find certificates in the 3517 trusted store even if an untrusted chain is also supplied. 3518 [Steve Henson] 3519 3520 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE, 3521 platform support for Linux and Android. 3522 [Andy Polyakov] 3523 3524 *) Support for linux-x32, ILP32 environment in x86_64 framework. 3525 [Andy Polyakov] 3526 3527 *) Experimental multi-implementation support for FIPS capable OpenSSL. 3528 When in FIPS mode the approved implementations are used as normal, 3529 when not in FIPS mode the internal unapproved versions are used instead. 3530 This means that the FIPS capable OpenSSL isn't forced to use the 3531 (often lower performance) FIPS implementations outside FIPS mode. 3532 [Steve Henson] 3533 3534 *) Transparently support X9.42 DH parameters when calling 3535 PEM_read_bio_DHparameters. This means existing applications can handle 3536 the new parameter format automatically. 3537 [Steve Henson] 3538 3539 *) Initial experimental support for X9.42 DH parameter format: mainly 3540 to support use of 'q' parameter for RFC5114 parameters. 3541 [Steve Henson] 3542 3543 *) Add DH parameters from RFC5114 including test data to dhtest. 3544 [Steve Henson] 3545 3546 *) Support for automatic EC temporary key parameter selection. If enabled 3547 the most preferred EC parameters are automatically used instead of 3548 hardcoded fixed parameters. Now a server just has to call: 3549 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically 3550 support ECDH and use the most appropriate parameters. 3551 [Steve Henson] 3552 3553 *) Enhance and tidy EC curve and point format TLS extension code. Use 3554 static structures instead of allocation if default values are used. 3555 New ctrls to set curves we wish to support and to retrieve shared curves. 3556 Print out shared curves in s_server. New options to s_server and s_client 3557 to set list of supported curves. 3558 [Steve Henson] 3559 3560 *) New ctrls to retrieve supported signature algorithms and 3561 supported curve values as an array of NIDs. Extend openssl utility 3562 to print out received values. 3563 [Steve Henson] 3564 3565 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert 3566 between NIDs and the more common NIST names such as "P-256". Enhance 3567 ecparam utility and ECC method to recognise the NIST names for curves. 3568 [Steve Henson] 3569 3570 *) Enhance SSL/TLS certificate chain handling to support different 3571 chains for each certificate instead of one chain in the parent SSL_CTX. 3572 [Steve Henson] 3573 3574 *) Support for fixed DH ciphersuite client authentication: where both 3575 server and client use DH certificates with common parameters. 3576 [Steve Henson] 3577 3578 *) Support for fixed DH ciphersuites: those requiring DH server 3579 certificates. 3580 [Steve Henson] 3581 3582 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of 3583 the certificate. 3584 Note: Related 1.0.2-beta specific macros X509_get_cert_info, 3585 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and 3586 X509_CINF_get_signature were reverted post internal team review. 3587 3588 Changes between 1.0.1k and 1.0.1l [15 Jan 2015] 3589 3590 *) Build fixes for the Windows and OpenVMS platforms 3591 [Matt Caswell and Richard Levitte] 3592 3593 Changes between 1.0.1j and 1.0.1k [8 Jan 2015] 3594 3595 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS 3596 message can cause a segmentation fault in OpenSSL due to a NULL pointer 3597 dereference. This could lead to a Denial Of Service attack. Thanks to 3598 Markus Stenberg of Cisco Systems, Inc. for reporting this issue. 3599 (CVE-2014-3571) 3600 [Steve Henson] 3601 3602 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the 3603 dtls1_buffer_record function under certain conditions. In particular this 3604 could occur if an attacker sent repeated DTLS records with the same 3605 sequence number but for the next epoch. The memory leak could be exploited 3606 by an attacker in a Denial of Service attack through memory exhaustion. 3607 Thanks to Chris Mueller for reporting this issue. 3608 (CVE-2015-0206) 3609 [Matt Caswell] 3610 3611 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is 3612 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl 3613 method would be set to NULL which could later result in a NULL pointer 3614 dereference. Thanks to Frank Schmirler for reporting this issue. 3615 (CVE-2014-3569) 3616 [Kurt Roeckx] 3617 3618 *) Abort handshake if server key exchange message is omitted for ephemeral 3619 ECDH ciphersuites. 3620 3621 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for 3622 reporting this issue. 3623 (CVE-2014-3572) 3624 [Steve Henson] 3625 3626 *) Remove non-export ephemeral RSA code on client and server. This code 3627 violated the TLS standard by allowing the use of temporary RSA keys in 3628 non-export ciphersuites and could be used by a server to effectively 3629 downgrade the RSA key length used to a value smaller than the server 3630 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at 3631 INRIA or reporting this issue. 3632 (CVE-2015-0204) 3633 [Steve Henson] 3634 3635 *) Fixed issue where DH client certificates are accepted without verification. 3636 An OpenSSL server will accept a DH certificate for client authentication 3637 without the certificate verify message. This effectively allows a client to 3638 authenticate without the use of a private key. This only affects servers 3639 which trust a client certificate authority which issues certificates 3640 containing DH keys: these are extremely rare and hardly ever encountered. 3641 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting 3642 this issue. 3643 (CVE-2015-0205) 3644 [Steve Henson] 3645 3646 *) Ensure that the session ID context of an SSL is updated when its 3647 SSL_CTX is updated via SSL_set_SSL_CTX. 3648 3649 The session ID context is typically set from the parent SSL_CTX, 3650 and can vary with the CTX. 3651 [Adam Langley] 3652 3653 *) Fix various certificate fingerprint issues. 3654 3655 By using non-DER or invalid encodings outside the signed portion of a 3656 certificate the fingerprint can be changed without breaking the signature. 3657 Although no details of the signed portion of the certificate can be changed 3658 this can cause problems with some applications: e.g. those using the 3659 certificate fingerprint for blacklists. 3660 3661 1. Reject signatures with non zero unused bits. 3662 3663 If the BIT STRING containing the signature has non zero unused bits reject 3664 the signature. All current signature algorithms require zero unused bits. 3665 3666 2. Check certificate algorithm consistency. 3667 3668 Check the AlgorithmIdentifier inside TBS matches the one in the 3669 certificate signature. NB: this will result in signature failure 3670 errors for some broken certificates. 3671 3672 Thanks to Konrad Kraszewski from Google for reporting this issue. 3673 3674 3. Check DSA/ECDSA signatures use DER. 3675 3676 Re-encode DSA/ECDSA signatures and compare with the original received 3677 signature. Return an error if there is a mismatch. 3678 3679 This will reject various cases including garbage after signature 3680 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS 3681 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs 3682 (negative or with leading zeroes). 3683 3684 Further analysis was conducted and fixes were developed by Stephen Henson 3685 of the OpenSSL core team. 3686 3687 (CVE-2014-8275) 3688 [Steve Henson] 3689 3690 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect 3691 results on some platforms, including x86_64. This bug occurs at random 3692 with a very low probability, and is not known to be exploitable in any 3693 way, though its exact impact is difficult to determine. Thanks to Pieter 3694 Wuille (Blockstream) who reported this issue and also suggested an initial 3695 fix. Further analysis was conducted by the OpenSSL development team and 3696 Adam Langley of Google. The final fix was developed by Andy Polyakov of 3697 the OpenSSL core team. 3698 (CVE-2014-3570) 3699 [Andy Polyakov] 3700 3701 *) Do not resume sessions on the server if the negotiated protocol 3702 version does not match the session's version. Resuming with a different 3703 version, while not strictly forbidden by the RFC, is of questionable 3704 sanity and breaks all known clients. 3705 [David Benjamin, Emilia Käsper] 3706 3707 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject 3708 early CCS messages during renegotiation. (Note that because 3709 renegotiation is encrypted, this early CCS was not exploitable.) 3710 [Emilia Käsper] 3711 3712 *) Tighten client-side session ticket handling during renegotiation: 3713 ensure that the client only accepts a session ticket if the server sends 3714 the extension anew in the ServerHello. Previously, a TLS client would 3715 reuse the old extension state and thus accept a session ticket if one was 3716 announced in the initial ServerHello. 3717 3718 Similarly, ensure that the client requires a session ticket if one 3719 was advertised in the ServerHello. Previously, a TLS client would 3720 ignore a missing NewSessionTicket message. 3721 [Emilia Käsper] 3722 3723 Changes between 1.0.1i and 1.0.1j [15 Oct 2014] 3724 3725 *) SRTP Memory Leak. 3726 3727 A flaw in the DTLS SRTP extension parsing code allows an attacker, who 3728 sends a carefully crafted handshake message, to cause OpenSSL to fail 3729 to free up to 64k of memory causing a memory leak. This could be 3730 exploited in a Denial Of Service attack. This issue affects OpenSSL 3731 1.0.1 server implementations for both SSL/TLS and DTLS regardless of 3732 whether SRTP is used or configured. Implementations of OpenSSL that 3733 have been compiled with OPENSSL_NO_SRTP defined are not affected. 3734 3735 The fix was developed by the OpenSSL team. 3736 (CVE-2014-3513) 3737 [OpenSSL team] 3738 3739 *) Session Ticket Memory Leak. 3740 3741 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the 3742 integrity of that ticket is first verified. In the event of a session 3743 ticket integrity check failing, OpenSSL will fail to free memory 3744 causing a memory leak. By sending a large number of invalid session 3745 tickets an attacker could exploit this issue in a Denial Of Service 3746 attack. 3747 (CVE-2014-3567) 3748 [Steve Henson] 3749 3750 *) Build option no-ssl3 is incomplete. 3751 3752 When OpenSSL is configured with "no-ssl3" as a build option, servers 3753 could accept and complete a SSL 3.0 handshake, and clients could be 3754 configured to send them. 3755 (CVE-2014-3568) 3756 [Akamai and the OpenSSL team] 3757 3758 *) Add support for TLS_FALLBACK_SCSV. 3759 Client applications doing fallback retries should call 3760 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV). 3761 (CVE-2014-3566) 3762 [Adam Langley, Bodo Moeller] 3763 3764 *) Add additional DigestInfo checks. 3765 3766 Re-encode DigestInto in DER and check against the original when 3767 verifying RSA signature: this will reject any improperly encoded 3768 DigestInfo structures. 3769 3770 Note: this is a precautionary measure and no attacks are currently known. 3771 3772 [Steve Henson] 3773 3774 Changes between 1.0.1h and 1.0.1i [6 Aug 2014] 3775 3776 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the 3777 SRP code can be overrun an internal buffer. Add sanity check that 3778 g, A, B < N to SRP code. 3779 3780 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC 3781 Group for discovering this issue. 3782 (CVE-2014-3512) 3783 [Steve Henson] 3784 3785 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate 3786 TLS 1.0 instead of higher protocol versions when the ClientHello message 3787 is badly fragmented. This allows a man-in-the-middle attacker to force a 3788 downgrade to TLS 1.0 even if both the server and the client support a 3789 higher protocol version, by modifying the client's TLS records. 3790 3791 Thanks to David Benjamin and Adam Langley (Google) for discovering and 3792 researching this issue. 3793 (CVE-2014-3511) 3794 [David Benjamin] 3795 3796 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject 3797 to a denial of service attack. A malicious server can crash the client 3798 with a null pointer dereference (read) by specifying an anonymous (EC)DH 3799 ciphersuite and sending carefully crafted handshake messages. 3800 3801 Thanks to Felix Gröbert (Google) for discovering and researching this 3802 issue. 3803 (CVE-2014-3510) 3804 [Emilia Käsper] 3805 3806 *) By sending carefully crafted DTLS packets an attacker could cause openssl 3807 to leak memory. This can be exploited through a Denial of Service attack. 3808 Thanks to Adam Langley for discovering and researching this issue. 3809 (CVE-2014-3507) 3810 [Adam Langley] 3811 3812 *) An attacker can force openssl to consume large amounts of memory whilst 3813 processing DTLS handshake messages. This can be exploited through a 3814 Denial of Service attack. 3815 Thanks to Adam Langley for discovering and researching this issue. 3816 (CVE-2014-3506) 3817 [Adam Langley] 3818 3819 *) An attacker can force an error condition which causes openssl to crash 3820 whilst processing DTLS packets due to memory being freed twice. This 3821 can be exploited through a Denial of Service attack. 3822 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching 3823 this issue. 3824 (CVE-2014-3505) 3825 [Adam Langley] 3826 3827 *) If a multithreaded client connects to a malicious server using a resumed 3828 session and the server sends an ec point format extension it could write 3829 up to 255 bytes to freed memory. 3830 3831 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this 3832 issue. 3833 (CVE-2014-3509) 3834 [Gabor Tyukasz] 3835 3836 *) A malicious server can crash an OpenSSL client with a null pointer 3837 dereference (read) by specifying an SRP ciphersuite even though it was not 3838 properly negotiated with the client. This can be exploited through a 3839 Denial of Service attack. 3840 3841 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for 3842 discovering and researching this issue. 3843 (CVE-2014-5139) 3844 [Steve Henson] 3845 3846 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as 3847 X509_name_oneline, X509_name_print_ex et al. to leak some information 3848 from the stack. Applications may be affected if they echo pretty printing 3849 output to the attacker. 3850 3851 Thanks to Ivan Fratric (Google) for discovering this issue. 3852 (CVE-2014-3508) 3853 [Emilia Käsper, and Steve Henson] 3854 3855 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 3856 for corner cases. (Certain input points at infinity could lead to 3857 bogus results, with non-infinity inputs mapped to infinity too.) 3858 [Bodo Moeller] 3859 3860 Changes between 1.0.1g and 1.0.1h [5 Jun 2014] 3861 3862 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted 3863 handshake can force the use of weak keying material in OpenSSL 3864 SSL/TLS clients and servers. 3865 3866 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and 3867 researching this issue. (CVE-2014-0224) 3868 [KIKUCHI Masashi, Steve Henson] 3869 3870 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an 3871 OpenSSL DTLS client the code can be made to recurse eventually crashing 3872 in a DoS attack. 3873 3874 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue. 3875 (CVE-2014-0221) 3876 [Imre Rad, Steve Henson] 3877 3878 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can 3879 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS 3880 client or server. This is potentially exploitable to run arbitrary 3881 code on a vulnerable client or server. 3882 3883 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195) 3884 [Jüri Aedla, Steve Henson] 3885 3886 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites 3887 are subject to a denial of service attack. 3888 3889 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering 3890 this issue. (CVE-2014-3470) 3891 [Felix Gröbert, Ivan Fratric, Steve Henson] 3892 3893 *) Harmonize version and its documentation. -f flag is used to display 3894 compilation flags. 3895 [mancha <mancha1@zoho.com>] 3896 3897 *) Fix eckey_priv_encode so it immediately returns an error upon a failure 3898 in i2d_ECPrivateKey. 3899 [mancha <mancha1@zoho.com>] 3900 3901 *) Fix some double frees. These are not thought to be exploitable. 3902 [mancha <mancha1@zoho.com>] 3903 3904 Changes between 1.0.1f and 1.0.1g [7 Apr 2014] 3905 3906 *) A missing bounds check in the handling of the TLS heartbeat extension 3907 can be used to reveal up to 64k of memory to a connected client or 3908 server. 3909 3910 Thanks for Neel Mehta of Google Security for discovering this bug and to 3911 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for 3912 preparing the fix (CVE-2014-0160) 3913 [Adam Langley, Bodo Moeller] 3914 3915 *) Fix for the attack described in the paper "Recovering OpenSSL 3916 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" 3917 by Yuval Yarom and Naomi Benger. Details can be obtained from: 3918 http://eprint.iacr.org/2014/140 3919 3920 Thanks to Yuval Yarom and Naomi Benger for discovering this 3921 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) 3922 [Yuval Yarom and Naomi Benger] 3923 3924 *) TLS pad extension: draft-agl-tls-padding-03 3925 3926 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the 3927 TLS client Hello record length value would otherwise be > 255 and 3928 less that 512 pad with a dummy extension containing zeroes so it 3929 is at least 512 bytes long. 3930 3931 [Adam Langley, Steve Henson] 3932 3933 Changes between 1.0.1e and 1.0.1f [6 Jan 2014] 3934 3935 *) Fix for TLS record tampering bug. A carefully crafted invalid 3936 handshake could crash OpenSSL with a NULL pointer exception. 3937 Thanks to Anton Johansson for reporting this issues. 3938 (CVE-2013-4353) 3939 3940 *) Keep original DTLS digest and encryption contexts in retransmission 3941 structures so we can use the previous session parameters if they need 3942 to be resent. (CVE-2013-6450) 3943 [Steve Henson] 3944 3945 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which 3946 avoids preferring ECDHE-ECDSA ciphers when the client appears to be 3947 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for 3948 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug 3949 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing 3950 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer. 3951 [Rob Stradling, Adam Langley] 3952 3953 Changes between 1.0.1d and 1.0.1e [11 Feb 2013] 3954 3955 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI 3956 supporting platforms or when small records were transferred. 3957 [Andy Polyakov, Steve Henson] 3958 3959 Changes between 1.0.1c and 1.0.1d [5 Feb 2013] 3960 3961 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time. 3962 3963 This addresses the flaw in CBC record processing discovered by 3964 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found 3965 at: http://www.isg.rhul.ac.uk/tls/ 3966 3967 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 3968 Security Group at Royal Holloway, University of London 3969 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and 3970 Emilia Käsper for the initial patch. 3971 (CVE-2013-0169) 3972 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson] 3973 3974 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode 3975 ciphersuites which can be exploited in a denial of service attack. 3976 Thanks go to and to Adam Langley <agl@chromium.org> for discovering 3977 and detecting this bug and to Wolfgang Ettlinger 3978 <wolfgang.ettlinger@gmail.com> for independently discovering this issue. 3979 (CVE-2012-2686) 3980 [Adam Langley] 3981 3982 *) Return an error when checking OCSP signatures when key is NULL. 3983 This fixes a DoS attack. (CVE-2013-0166) 3984 [Steve Henson] 3985 3986 *) Make openssl verify return errors. 3987 [Chris Palmer <palmer@google.com> and Ben Laurie] 3988 3989 *) Call OCSP Stapling callback after ciphersuite has been chosen, so 3990 the right response is stapled. Also change SSL_get_certificate() 3991 so it returns the certificate actually sent. 3992 See http://rt.openssl.org/Ticket/Display.html?id=2836. 3993 [Rob Stradling <rob.stradling@comodo.com>] 3994 3995 *) Fix possible deadlock when decoding public keys. 3996 [Steve Henson] 3997 3998 *) Don't use TLS 1.0 record version number in initial client hello 3999 if renegotiating. 4000 [Steve Henson] 4001 4002 Changes between 1.0.1b and 1.0.1c [10 May 2012] 4003 4004 *) Sanity check record length before skipping explicit IV in TLS 4005 1.2, 1.1 and DTLS to fix DoS attack. 4006 4007 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic 4008 fuzzing as a service testing platform. 4009 (CVE-2012-2333) 4010 [Steve Henson] 4011 4012 *) Initialise tkeylen properly when encrypting CMS messages. 4013 Thanks to Solar Designer of Openwall for reporting this issue. 4014 [Steve Henson] 4015 4016 *) In FIPS mode don't try to use composite ciphers as they are not 4017 approved. 4018 [Steve Henson] 4019 4020 Changes between 1.0.1a and 1.0.1b [26 Apr 2012] 4021 4022 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and 4023 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately 4024 mean any application compiled against OpenSSL 1.0.0 headers setting 4025 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling 4026 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to 4027 0x10000000L Any application which was previously compiled against 4028 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1 4029 will need to be recompiled as a result. Letting be results in 4030 inability to disable specifically TLS 1.1 and in client context, 4031 in unlike event, limit maximum offered version to TLS 1.0 [see below]. 4032 [Steve Henson] 4033 4034 *) In order to ensure interoperability SSL_OP_NO_protocolX does not 4035 disable just protocol X, but all protocols above X *if* there are 4036 protocols *below* X still enabled. In more practical terms it means 4037 that if application wants to disable TLS1.0 in favor of TLS1.1 and 4038 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass 4039 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to 4040 client side. 4041 [Andy Polyakov] 4042 4043 Changes between 1.0.1 and 1.0.1a [19 Apr 2012] 4044 4045 *) Check for potentially exploitable overflows in asn1_d2i_read_bio 4046 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer 4047 in CRYPTO_realloc_clean. 4048 4049 Thanks to Tavis Ormandy, Google Security Team, for discovering this 4050 issue and to Adam Langley <agl@chromium.org> for fixing it. 4051 (CVE-2012-2110) 4052 [Adam Langley (Google), Tavis Ormandy, Google Security Team] 4053 4054 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections. 4055 [Adam Langley] 4056 4057 *) Workarounds for some broken servers that "hang" if a client hello 4058 record length exceeds 255 bytes. 4059 4060 1. Do not use record version number > TLS 1.0 in initial client 4061 hello: some (but not all) hanging servers will now work. 4062 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate 4063 the number of ciphers sent in the client hello. This should be 4064 set to an even number, such as 50, for example by passing: 4065 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure. 4066 Most broken servers should now work. 4067 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable 4068 TLS 1.2 client support entirely. 4069 [Steve Henson] 4070 4071 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH. 4072 [Andy Polyakov] 4073 4074 Changes between 1.0.0h and 1.0.1 [14 Mar 2012] 4075 4076 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET 4077 STRING form instead of a DigestInfo. 4078 [Steve Henson] 4079 4080 *) The format used for MDC2 RSA signatures is inconsistent between EVP 4081 and the RSA_sign/RSA_verify functions. This was made more apparent when 4082 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular 4083 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect 4084 the correct format in RSA_verify so both forms transparently work. 4085 [Steve Henson] 4086 4087 *) Some servers which support TLS 1.0 can choke if we initially indicate 4088 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA 4089 encrypted premaster secret. As a workaround use the maximum permitted 4090 client version in client hello, this should keep such servers happy 4091 and still work with previous versions of OpenSSL. 4092 [Steve Henson] 4093 4094 *) Add support for TLS/DTLS heartbeats. 4095 [Robin Seggelmann <seggelmann@fh-muenster.de>] 4096 4097 *) Add support for SCTP. 4098 [Robin Seggelmann <seggelmann@fh-muenster.de>] 4099 4100 *) Improved PRNG seeding for VOS. 4101 [Paul Green <Paul.Green@stratus.com>] 4102 4103 *) Extensive assembler packs updates, most notably: 4104 4105 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support; 4106 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES); 4107 - x86_64: bit-sliced AES implementation; 4108 - ARM: NEON support, contemporary platforms optimizations; 4109 - s390x: z196 support; 4110 - *: GHASH and GF(2^m) multiplication implementations; 4111 4112 [Andy Polyakov] 4113 4114 *) Make TLS-SRP code conformant with RFC 5054 API cleanup 4115 (removal of unnecessary code) 4116 [Peter Sylvester <peter.sylvester@edelweb.fr>] 4117 4118 *) Add TLS key material exporter from RFC 5705. 4119 [Eric Rescorla] 4120 4121 *) Add DTLS-SRTP negotiation from RFC 5764. 4122 [Eric Rescorla] 4123 4124 *) Add Next Protocol Negotiation, 4125 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be 4126 disabled with a no-npn flag to config or Configure. Code donated 4127 by Google. 4128 [Adam Langley <agl@google.com> and Ben Laurie] 4129 4130 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224, 4131 NIST-P256, NIST-P521, with constant-time single point multiplication on 4132 typical inputs. Compiler support for the nonstandard type __uint128_t is 4133 required to use this (present in gcc 4.4 and later, for 64-bit builds). 4134 Code made available under Apache License version 2.0. 4135 4136 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command 4137 line to include this in your build of OpenSSL, and run "make depend" (or 4138 "make update"). This enables the following EC_METHODs: 4139 4140 EC_GFp_nistp224_method() 4141 EC_GFp_nistp256_method() 4142 EC_GFp_nistp521_method() 4143 4144 EC_GROUP_new_by_curve_name() will automatically use these (while 4145 EC_GROUP_new_curve_GFp() currently prefers the more flexible 4146 implementations). 4147 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)] 4148 4149 *) Use type ossl_ssize_t instead of ssize_t which isn't available on 4150 all platforms. Move ssize_t definition from e_os.h to the public 4151 header file e_os2.h as it now appears in public header file cms.h 4152 [Steve Henson] 4153 4154 *) New -sigopt option to the ca, req and x509 utilities. Additional 4155 signature parameters can be passed using this option and in 4156 particular PSS. 4157 [Steve Henson] 4158 4159 *) Add RSA PSS signing function. This will generate and set the 4160 appropriate AlgorithmIdentifiers for PSS based on those in the 4161 corresponding EVP_MD_CTX structure. No application support yet. 4162 [Steve Henson] 4163 4164 *) Support for companion algorithm specific ASN1 signing routines. 4165 New function ASN1_item_sign_ctx() signs a pre-initialised 4166 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on 4167 the appropriate parameters. 4168 [Steve Henson] 4169 4170 *) Add new algorithm specific ASN1 verification initialisation function 4171 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1 4172 handling will be the same no matter what EVP_PKEY_METHOD is used. 4173 Add a PSS handler to support verification of PSS signatures: checked 4174 against a number of sample certificates. 4175 [Steve Henson] 4176 4177 *) Add signature printing for PSS. Add PSS OIDs. 4178 [Steve Henson, Martin Kaiser <lists@kaiser.cx>] 4179 4180 *) Add algorithm specific signature printing. An individual ASN1 method 4181 can now print out signatures instead of the standard hex dump. 4182 4183 More complex signatures (e.g. PSS) can print out more meaningful 4184 information. Include DSA version that prints out the signature 4185 parameters r, s. 4186 [Steve Henson] 4187 4188 *) Password based recipient info support for CMS library: implementing 4189 RFC3211. 4190 [Steve Henson] 4191 4192 *) Split password based encryption into PBES2 and PBKDF2 functions. This 4193 neatly separates the code into cipher and PBE sections and is required 4194 for some algorithms that split PBES2 into separate pieces (such as 4195 password based CMS). 4196 [Steve Henson] 4197 4198 *) Session-handling fixes: 4199 - Fix handling of connections that are resuming with a session ID, 4200 but also support Session Tickets. 4201 - Fix a bug that suppressed issuing of a new ticket if the client 4202 presented a ticket with an expired session. 4203 - Try to set the ticket lifetime hint to something reasonable. 4204 - Make tickets shorter by excluding irrelevant information. 4205 - On the client side, don't ignore renewed tickets. 4206 [Adam Langley, Bodo Moeller (Google)] 4207 4208 *) Fix PSK session representation. 4209 [Bodo Moeller] 4210 4211 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations. 4212 4213 This work was sponsored by Intel. 4214 [Andy Polyakov] 4215 4216 *) Add GCM support to TLS library. Some custom code is needed to split 4217 the IV between the fixed (from PRF) and explicit (from TLS record) 4218 portions. This adds all GCM ciphersuites supported by RFC5288 and 4219 RFC5289. Generalise some AES* cipherstrings to include GCM and 4220 add a special AESGCM string for GCM only. 4221 [Steve Henson] 4222 4223 *) Expand range of ctrls for AES GCM. Permit setting invocation 4224 field on decrypt and retrieval of invocation field only on encrypt. 4225 [Steve Henson] 4226 4227 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support. 4228 As required by RFC5289 these ciphersuites cannot be used if for 4229 versions of TLS earlier than 1.2. 4230 [Steve Henson] 4231 4232 *) For FIPS capable OpenSSL interpret a NULL default public key method 4233 as unset and return the appropriate default but do *not* set the default. 4234 This means we can return the appropriate method in applications that 4235 switch between FIPS and non-FIPS modes. 4236 [Steve Henson] 4237 4238 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an 4239 ENGINE is used then we cannot handle that in the FIPS module so we 4240 keep original code iff non-FIPS operations are allowed. 4241 [Steve Henson] 4242 4243 *) Add -attime option to openssl utilities. 4244 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson] 4245 4246 *) Redirect DSA and DH operations to FIPS module in FIPS mode. 4247 [Steve Henson] 4248 4249 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use 4250 FIPS EC methods unconditionally for now. 4251 [Steve Henson] 4252 4253 *) New build option no-ec2m to disable characteristic 2 code. 4254 [Steve Henson] 4255 4256 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not 4257 all cases can be covered as some introduce binary incompatibilities. 4258 [Steve Henson] 4259 4260 *) Redirect RSA operations to FIPS module including keygen, 4261 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods. 4262 [Steve Henson] 4263 4264 *) Add similar low level API blocking to ciphers. 4265 [Steve Henson] 4266 4267 *) Low level digest APIs are not approved in FIPS mode: any attempt 4268 to use these will cause a fatal error. Applications that *really* want 4269 to use them can use the private_* version instead. 4270 [Steve Henson] 4271 4272 *) Redirect cipher operations to FIPS module for FIPS builds. 4273 [Steve Henson] 4274 4275 *) Redirect digest operations to FIPS module for FIPS builds. 4276 [Steve Henson] 4277 4278 *) Update build system to add "fips" flag which will link in fipscanister.o 4279 for static and shared library builds embedding a signature if needed. 4280 [Steve Henson] 4281 4282 *) Output TLS supported curves in preference order instead of numerical 4283 order. This is currently hardcoded for the highest order curves first. 4284 This should be configurable so applications can judge speed vs strength. 4285 [Steve Henson] 4286 4287 *) Add TLS v1.2 server support for client authentication. 4288 [Steve Henson] 4289 4290 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers 4291 and enable MD5. 4292 [Steve Henson] 4293 4294 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying 4295 FIPS modules versions. 4296 [Steve Henson] 4297 4298 *) Add TLS v1.2 client side support for client authentication. Keep cache 4299 of handshake records longer as we don't know the hash algorithm to use 4300 until after the certificate request message is received. 4301 [Steve Henson] 4302 4303 *) Initial TLS v1.2 client support. Add a default signature algorithms 4304 extension including all the algorithms we support. Parse new signature 4305 format in client key exchange. Relax some ECC signing restrictions for 4306 TLS v1.2 as indicated in RFC5246. 4307 [Steve Henson] 4308 4309 *) Add server support for TLS v1.2 signature algorithms extension. Switch 4310 to new signature format when needed using client digest preference. 4311 All server ciphersuites should now work correctly in TLS v1.2. No client 4312 support yet and no support for client certificates. 4313 [Steve Henson] 4314 4315 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch 4316 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based 4317 ciphersuites. At present only RSA key exchange ciphersuites work with 4318 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete 4319 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods 4320 and version checking. 4321 [Steve Henson] 4322 4323 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled 4324 with this defined it will not be affected by any changes to ssl internal 4325 structures. Add several utility functions to allow openssl application 4326 to work with OPENSSL_NO_SSL_INTERN defined. 4327 [Steve Henson] 4328 4329 *) A long standing patch to add support for SRP from EdelWeb (Peter 4330 Sylvester and Christophe Renou) was integrated. 4331 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester 4332 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and 4333 Ben Laurie] 4334 4335 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id. 4336 [Steve Henson] 4337 4338 *) Permit abbreviated handshakes when renegotiating using the function 4339 SSL_renegotiate_abbreviated(). 4340 [Robin Seggelmann <seggelmann@fh-muenster.de>] 4341 4342 *) Add call to ENGINE_register_all_complete() to 4343 ENGINE_load_builtin_engines(), so some implementations get used 4344 automatically instead of needing explicit application support. 4345 [Steve Henson] 4346 4347 *) Add support for TLS key exporter as described in RFC5705. 4348 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson] 4349 4350 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only 4351 a few changes are required: 4352 4353 Add SSL_OP_NO_TLSv1_1 flag. 4354 Add TLSv1_1 methods. 4355 Update version checking logic to handle version 1.1. 4356 Add explicit IV handling (ported from DTLS code). 4357 Add command line options to s_client/s_server. 4358 [Steve Henson] 4359 4360 Changes between 1.0.0g and 1.0.0h [12 Mar 2012] 4361 4362 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness 4363 in CMS and PKCS7 code. When RSA decryption fails use a random key for 4364 content decryption and always return the same error. Note: this attack 4365 needs on average 2^20 messages so it only affects automated senders. The 4366 old behaviour can be re-enabled in the CMS code by setting the 4367 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where 4368 an MMA defence is not necessary. 4369 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering 4370 this issue. (CVE-2012-0884) 4371 [Steve Henson] 4372 4373 *) Fix CVE-2011-4619: make sure we really are receiving a 4374 client hello before rejecting multiple SGC restarts. Thanks to 4375 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug. 4376 [Steve Henson] 4377 4378 Changes between 1.0.0f and 1.0.0g [18 Jan 2012] 4379 4380 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109. 4381 Thanks to Antonio Martin, Enterprise Secure Access Research and 4382 Development, Cisco Systems, Inc. for discovering this bug and 4383 preparing a fix. (CVE-2012-0050) 4384 [Antonio Martin] 4385 4386 Changes between 1.0.0e and 1.0.0f [4 Jan 2012] 4387 4388 *) Nadhem Alfardan and Kenny Paterson have discovered an extension 4389 of the Vaudenay padding oracle attack on CBC mode encryption 4390 which enables an efficient plaintext recovery attack against 4391 the OpenSSL implementation of DTLS. Their attack exploits timing 4392 differences arising during decryption processing. A research 4393 paper describing this attack can be found at: 4394 http://www.isg.rhul.ac.uk/~kp/dtls.pdf 4395 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 4396 Security Group at Royal Holloway, University of London 4397 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann 4398 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de> 4399 for preparing the fix. (CVE-2011-4108) 4400 [Robin Seggelmann, Michael Tuexen] 4401 4402 *) Clear bytes used for block padding of SSL 3.0 records. 4403 (CVE-2011-4576) 4404 [Adam Langley (Google)] 4405 4406 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George 4407 Kadianakis <desnacked@gmail.com> for discovering this issue and 4408 Adam Langley for preparing the fix. (CVE-2011-4619) 4409 [Adam Langley (Google)] 4410 4411 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027) 4412 [Andrey Kulikov <amdeich@gmail.com>] 4413 4414 *) Prevent malformed RFC3779 data triggering an assertion failure. 4415 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw 4416 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577) 4417 [Rob Austein <sra@hactrn.net>] 4418 4419 *) Improved PRNG seeding for VOS. 4420 [Paul Green <Paul.Green@stratus.com>] 4421 4422 *) Fix ssl_ciph.c set-up race. 4423 [Adam Langley (Google)] 4424 4425 *) Fix spurious failures in ecdsatest.c. 4426 [Emilia Käsper (Google)] 4427 4428 *) Fix the BIO_f_buffer() implementation (which was mixing different 4429 interpretations of the '..._len' fields). 4430 [Adam Langley (Google)] 4431 4432 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than 4433 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent 4434 threads won't reuse the same blinding coefficients. 4435 4436 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING 4437 lock to call BN_BLINDING_invert_ex, and avoids one use of 4438 BN_BLINDING_update for each BN_BLINDING structure (previously, 4439 the last update always remained unused). 4440 [Emilia Käsper (Google)] 4441 4442 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf. 4443 [Bob Buckholz (Google)] 4444 4445 Changes between 1.0.0d and 1.0.0e [6 Sep 2011] 4446 4447 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted 4448 by initialising X509_STORE_CTX properly. (CVE-2011-3207) 4449 [Kaspar Brand <ossl@velox.ch>] 4450 4451 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular 4452 for multi-threaded use of ECDH. (CVE-2011-3210) 4453 [Adam Langley (Google)] 4454 4455 *) Fix x509_name_ex_d2i memory leak on bad inputs. 4456 [Bodo Moeller] 4457 4458 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check 4459 signature public key algorithm by using OID xref utilities instead. 4460 Before this you could only use some ECC ciphersuites with SHA1 only. 4461 [Steve Henson] 4462 4463 *) Add protection against ECDSA timing attacks as mentioned in the paper 4464 by Billy Bob Brumley and Nicola Tuveri, see: 4465 4466 http://eprint.iacr.org/2011/232.pdf 4467 4468 [Billy Bob Brumley and Nicola Tuveri] 4469 4470 Changes between 1.0.0c and 1.0.0d [8 Feb 2011] 4471 4472 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014 4473 [Neel Mehta, Adam Langley, Bodo Moeller (Google)] 4474 4475 *) Fix bug in string printing code: if *any* escaping is enabled we must 4476 escape the escape character (backslash) or the resulting string is 4477 ambiguous. 4478 [Steve Henson] 4479 4480 Changes between 1.0.0b and 1.0.0c [2 Dec 2010] 4481 4482 *) Disable code workaround for ancient and obsolete Netscape browsers 4483 and servers: an attacker can use it in a ciphersuite downgrade attack. 4484 Thanks to Martin Rex for discovering this bug. CVE-2010-4180 4485 [Steve Henson] 4486 4487 *) Fixed J-PAKE implementation error, originally discovered by 4488 Sebastien Martini, further info and confirmation from Stefan 4489 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252 4490 [Ben Laurie] 4491 4492 Changes between 1.0.0a and 1.0.0b [16 Nov 2010] 4493 4494 *) Fix extension code to avoid race conditions which can result in a buffer 4495 overrun vulnerability: resumed sessions must not be modified as they can 4496 be shared by multiple threads. CVE-2010-3864 4497 [Steve Henson] 4498 4499 *) Fix WIN32 build system to correctly link an ENGINE directory into 4500 a DLL. 4501 [Steve Henson] 4502 4503 Changes between 1.0.0 and 1.0.0a [01 Jun 2010] 4504 4505 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover 4506 (CVE-2010-1633) 4507 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>] 4508 4509 Changes between 0.9.8n and 1.0.0 [29 Mar 2010] 4510 4511 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher 4512 context. The operation can be customised via the ctrl mechanism in 4513 case ENGINEs want to include additional functionality. 4514 [Steve Henson] 4515 4516 *) Tolerate yet another broken PKCS#8 key format: private key value negative. 4517 [Steve Henson] 4518 4519 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to 4520 output hashes compatible with older versions of OpenSSL. 4521 [Willy Weisz <weisz@vcpc.univie.ac.at>] 4522 4523 *) Fix compression algorithm handling: if resuming a session use the 4524 compression algorithm of the resumed session instead of determining 4525 it from client hello again. Don't allow server to change algorithm. 4526 [Steve Henson] 4527 4528 *) Add load_crls() function to apps tidying load_certs() too. Add option 4529 to verify utility to allow additional CRLs to be included. 4530 [Steve Henson] 4531 4532 *) Update OCSP request code to permit adding custom headers to the request: 4533 some responders need this. 4534 [Steve Henson] 4535 4536 *) The function EVP_PKEY_sign() returns <=0 on error: check return code 4537 correctly. 4538 [Julia Lawall <julia@diku.dk>] 4539 4540 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it 4541 needlessly dereferenced structures, used obsolete functions and 4542 didn't handle all updated verify codes correctly. 4543 [Steve Henson] 4544 4545 *) Disable MD2 in the default configuration. 4546 [Steve Henson] 4547 4548 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to 4549 indicate the initial BIO being pushed or popped. This makes it possible 4550 to determine whether the BIO is the one explicitly called or as a result 4551 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so 4552 it handles reference counts correctly and doesn't zero out the I/O bio 4553 when it is not being explicitly popped. WARNING: applications which 4554 included workarounds for the old buggy behaviour will need to be modified 4555 or they could free up already freed BIOs. 4556 [Steve Henson] 4557 4558 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni 4559 renaming to all platforms (within the 0.9.8 branch, this was 4560 done conditionally on Netware platforms to avoid a name clash). 4561 [Guenter <lists@gknw.net>] 4562 4563 *) Add ECDHE and PSK support to DTLS. 4564 [Michael Tuexen <tuexen@fh-muenster.de>] 4565 4566 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't 4567 be used on C++. 4568 [Steve Henson] 4569 4570 *) Add "missing" function EVP_MD_flags() (without this the only way to 4571 retrieve a digest flags is by accessing the structure directly. Update 4572 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest 4573 or cipher is registered as in the "from" argument. Print out all 4574 registered digests in the dgst usage message instead of manually 4575 attempting to work them out. 4576 [Steve Henson] 4577 4578 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello: 4579 this allows the use of compression and extensions. Change default cipher 4580 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2 4581 by default unless an application cipher string requests it. 4582 [Steve Henson] 4583 4584 *) Alter match criteria in PKCS12_parse(). It used to try to use local 4585 key ids to find matching certificates and keys but some PKCS#12 files 4586 don't follow the (somewhat unwritten) rules and this strategy fails. 4587 Now just gather all certificates together and the first private key 4588 then look for the first certificate that matches the key. 4589 [Steve Henson] 4590 4591 *) Support use of registered digest and cipher names for dgst and cipher 4592 commands instead of having to add each one as a special case. So now 4593 you can do: 4594 4595 openssl sha256 foo 4596 4597 as well as: 4598 4599 openssl dgst -sha256 foo 4600 4601 and this works for ENGINE based algorithms too. 4602 4603 [Steve Henson] 4604 4605 *) Update Gost ENGINE to support parameter files. 4606 [Victor B. Wagner <vitus@cryptocom.ru>] 4607 4608 *) Support GeneralizedTime in ca utility. 4609 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson] 4610 4611 *) Enhance the hash format used for certificate directory links. The new 4612 form uses the canonical encoding (meaning equivalent names will work 4613 even if they aren't identical) and uses SHA1 instead of MD5. This form 4614 is incompatible with the older format and as a result c_rehash should 4615 be used to rebuild symbolic links. 4616 [Steve Henson] 4617 4618 *) Make PKCS#8 the default write format for private keys, replacing the 4619 traditional format. This form is standardised, more secure and doesn't 4620 include an implicit MD5 dependency. 4621 [Steve Henson] 4622 4623 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code 4624 committed to OpenSSL should pass this lot as a minimum. 4625 [Steve Henson] 4626 4627 *) Add session ticket override functionality for use by EAP-FAST. 4628 [Jouni Malinen <j@w1.fi>] 4629 4630 *) Modify HMAC functions to return a value. Since these can be implemented 4631 in an ENGINE errors can occur. 4632 [Steve Henson] 4633 4634 *) Type-checked OBJ_bsearch_ex. 4635 [Ben Laurie] 4636 4637 *) Type-checked OBJ_bsearch. Also some constification necessitated 4638 by type-checking. Still to come: TXT_DB, bsearch(?), 4639 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING, 4640 CONF_VALUE. 4641 [Ben Laurie] 4642 4643 *) New function OPENSSL_gmtime_adj() to add a specific number of days and 4644 seconds to a tm structure directly, instead of going through OS 4645 specific date routines. This avoids any issues with OS routines such 4646 as the year 2038 bug. New *_adj() functions for ASN1 time structures 4647 and X509_time_adj_ex() to cover the extended range. The existing 4648 X509_time_adj() is still usable and will no longer have any date issues. 4649 [Steve Henson] 4650 4651 *) Delta CRL support. New use deltas option which will attempt to locate 4652 and search any appropriate delta CRLs available. 4653 4654 This work was sponsored by Google. 4655 [Steve Henson] 4656 4657 *) Support for CRLs partitioned by reason code. Reorganise CRL processing 4658 code and add additional score elements. Validate alternate CRL paths 4659 as part of the CRL checking and indicate a new error "CRL path validation 4660 error" in this case. Applications wanting additional details can use 4661 the verify callback and check the new "parent" field. If this is not 4662 NULL CRL path validation is taking place. Existing applications won't 4663 see this because it requires extended CRL support which is off by 4664 default. 4665 4666 This work was sponsored by Google. 4667 [Steve Henson] 4668 4669 *) Support for freshest CRL extension. 4670 4671 This work was sponsored by Google. 4672 [Steve Henson] 4673 4674 *) Initial indirect CRL support. Currently only supported in the CRLs 4675 passed directly and not via lookup. Process certificate issuer 4676 CRL entry extension and lookup CRL entries by bother issuer name 4677 and serial number. Check and process CRL issuer entry in IDP extension. 4678 4679 This work was sponsored by Google. 4680 [Steve Henson] 4681 4682 *) Add support for distinct certificate and CRL paths. The CRL issuer 4683 certificate is validated separately in this case. Only enabled if 4684 an extended CRL support flag is set: this flag will enable additional 4685 CRL functionality in future. 4686 4687 This work was sponsored by Google. 4688 [Steve Henson] 4689 4690 *) Add support for policy mappings extension. 4691 4692 This work was sponsored by Google. 4693 [Steve Henson] 4694 4695 *) Fixes to pathlength constraint, self issued certificate handling, 4696 policy processing to align with RFC3280 and PKITS tests. 4697 4698 This work was sponsored by Google. 4699 [Steve Henson] 4700 4701 *) Support for name constraints certificate extension. DN, email, DNS 4702 and URI types are currently supported. 4703 4704 This work was sponsored by Google. 4705 [Steve Henson] 4706 4707 *) To cater for systems that provide a pointer-based thread ID rather 4708 than numeric, deprecate the current numeric thread ID mechanism and 4709 replace it with a structure and associated callback type. This 4710 mechanism allows a numeric "hash" to be extracted from a thread ID in 4711 either case, and on platforms where pointers are larger than 'long', 4712 mixing is done to help ensure the numeric 'hash' is usable even if it 4713 can't be guaranteed unique. The default mechanism is to use "&errno" 4714 as a pointer-based thread ID to distinguish between threads. 4715 4716 Applications that want to provide their own thread IDs should now use 4717 CRYPTO_THREADID_set_callback() to register a callback that will call 4718 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer(). 4719 4720 Note that ERR_remove_state() is now deprecated, because it is tied 4721 to the assumption that thread IDs are numeric. ERR_remove_state(0) 4722 to free the current thread's error state should be replaced by 4723 ERR_remove_thread_state(NULL). 4724 4725 (This new approach replaces the functions CRYPTO_set_idptr_callback(), 4726 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in 4727 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an 4728 application was previously providing a numeric thread callback that 4729 was inappropriate for distinguishing threads, then uniqueness might 4730 have been obtained with &errno that happened immediately in the 4731 intermediate development versions of OpenSSL; this is no longer the 4732 case, the numeric thread callback will now override the automatic use 4733 of &errno.) 4734 [Geoff Thorpe, with help from Bodo Moeller] 4735 4736 *) Initial support for different CRL issuing certificates. This covers a 4737 simple case where the self issued certificates in the chain exist and 4738 the real CRL issuer is higher in the existing chain. 4739 4740 This work was sponsored by Google. 4741 [Steve Henson] 4742 4743 *) Removed effectively defunct crypto/store from the build. 4744 [Ben Laurie] 4745 4746 *) Revamp of STACK to provide stronger type-checking. Still to come: 4747 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE, 4748 ASN1_STRING, CONF_VALUE. 4749 [Ben Laurie] 4750 4751 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer 4752 RAM on SSL connections. This option can save about 34k per idle SSL. 4753 [Nick Mathewson] 4754 4755 *) Revamp of LHASH to provide stronger type-checking. Still to come: 4756 STACK, TXT_DB, bsearch, qsort. 4757 [Ben Laurie] 4758 4759 *) Initial support for Cryptographic Message Syntax (aka CMS) based 4760 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility, 4761 support for data, signedData, compressedData, digestedData and 4762 encryptedData, envelopedData types included. Scripts to check against 4763 RFC4134 examples draft and interop and consistency checks of many 4764 content types and variants. 4765 [Steve Henson] 4766 4767 *) Add options to enc utility to support use of zlib compression BIO. 4768 [Steve Henson] 4769 4770 *) Extend mk1mf to support importing of options and assembly language 4771 files from Configure script, currently only included in VC-WIN32. 4772 The assembly language rules can now optionally generate the source 4773 files from the associated perl scripts. 4774 [Steve Henson] 4775 4776 *) Implement remaining functionality needed to support GOST ciphersuites. 4777 Interop testing has been performed using CryptoPro implementations. 4778 [Victor B. Wagner <vitus@cryptocom.ru>] 4779 4780 *) s390x assembler pack. 4781 [Andy Polyakov] 4782 4783 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU 4784 "family." 4785 [Andy Polyakov] 4786 4787 *) Implement Opaque PRF Input TLS extension as specified in 4788 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an 4789 official specification yet and no extension type assignment by 4790 IANA exists, this extension (for now) will have to be explicitly 4791 enabled when building OpenSSL by providing the extension number 4792 to use. For example, specify an option 4793 4794 -DTLSEXT_TYPE_opaque_prf_input=0x9527 4795 4796 to the "config" or "Configure" script to enable the extension, 4797 assuming extension number 0x9527 (which is a completely arbitrary 4798 and unofficial assignment based on the MD5 hash of the Internet 4799 Draft). Note that by doing so, you potentially lose 4800 interoperability with other TLS implementations since these might 4801 be using the same extension number for other purposes. 4802 4803 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the 4804 opaque PRF input value to use in the handshake. This will create 4805 an internal copy of the length-'len' string at 'src', and will 4806 return non-zero for success. 4807 4808 To get more control and flexibility, provide a callback function 4809 by using 4810 4811 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb) 4812 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg) 4813 4814 where 4815 4816 int (*cb)(SSL *, void *peerinput, size_t len, void *arg); 4817 void *arg; 4818 4819 Callback function 'cb' will be called in handshakes, and is 4820 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate. 4821 Argument 'arg' is for application purposes (the value as given to 4822 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly 4823 be provided to the callback function). The callback function 4824 has to return non-zero to report success: usually 1 to use opaque 4825 PRF input just if possible, or 2 to enforce use of the opaque PRF 4826 input. In the latter case, the library will abort the handshake 4827 if opaque PRF input is not successfully negotiated. 4828 4829 Arguments 'peerinput' and 'len' given to the callback function 4830 will always be NULL and 0 in the case of a client. A server will 4831 see the client's opaque PRF input through these variables if 4832 available (NULL and 0 otherwise). Note that if the server 4833 provides an opaque PRF input, the length must be the same as the 4834 length of the client's opaque PRF input. 4835 4836 Note that the callback function will only be called when creating 4837 a new session (session resumption can resume whatever was 4838 previously negotiated), and will not be called in SSL 2.0 4839 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or 4840 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended 4841 for applications that need to enforce opaque PRF input. 4842 4843 [Bodo Moeller] 4844 4845 *) Update ssl code to support digests other than SHA1+MD5 for handshake 4846 MAC. 4847 4848 [Victor B. Wagner <vitus@cryptocom.ru>] 4849 4850 *) Add RFC4507 support to OpenSSL. This includes the corrections in 4851 RFC4507bis. The encrypted ticket format is an encrypted encoded 4852 SSL_SESSION structure, that way new session features are automatically 4853 supported. 4854 4855 If a client application caches session in an SSL_SESSION structure 4856 support is transparent because tickets are now stored in the encoded 4857 SSL_SESSION. 4858 4859 The SSL_CTX structure automatically generates keys for ticket 4860 protection in servers so again support should be possible 4861 with no application modification. 4862 4863 If a client or server wishes to disable RFC4507 support then the option 4864 SSL_OP_NO_TICKET can be set. 4865 4866 Add a TLS extension debugging callback to allow the contents of any client 4867 or server extensions to be examined. 4868 4869 This work was sponsored by Google. 4870 [Steve Henson] 4871 4872 *) Final changes to avoid use of pointer pointer casts in OpenSSL. 4873 OpenSSL should now compile cleanly on gcc 4.2 4874 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson] 4875 4876 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC 4877 support including streaming MAC support: this is required for GOST 4878 ciphersuite support. 4879 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson] 4880 4881 *) Add option -stream to use PKCS#7 streaming in smime utility. New 4882 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream() 4883 to output in BER and PEM format. 4884 [Steve Henson] 4885 4886 *) Experimental support for use of HMAC via EVP_PKEY interface. This 4887 allows HMAC to be handled via the EVP_DigestSign*() interface. The 4888 EVP_PKEY "key" in this case is the HMAC key, potentially allowing 4889 ENGINE support for HMAC keys which are unextractable. New -mac and 4890 -macopt options to dgst utility. 4891 [Steve Henson] 4892 4893 *) New option -sigopt to dgst utility. Update dgst to use 4894 EVP_Digest{Sign,Verify}*. These two changes make it possible to use 4895 alternative signing parameters such as X9.31 or PSS in the dgst 4896 utility. 4897 [Steve Henson] 4898 4899 *) Change ssl_cipher_apply_rule(), the internal function that does 4900 the work each time a ciphersuite string requests enabling 4901 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or 4902 removing ("!foo+bar") a class of ciphersuites: Now it maintains 4903 the order of disabled ciphersuites such that those ciphersuites 4904 that most recently went from enabled to disabled not only stay 4905 in order with respect to each other, but also have higher priority 4906 than other disabled ciphersuites the next time ciphersuites are 4907 enabled again. 4908 4909 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable 4910 the same ciphersuites as with "HIGH" alone, but in a specific 4911 order where the PSK ciphersuites come first (since they are the 4912 most recently disabled ciphersuites when "HIGH" is parsed). 4913 4914 Also, change ssl_create_cipher_list() (using this new 4915 functionality) such that between otherwise identical 4916 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in 4917 the default order. 4918 [Bodo Moeller] 4919 4920 *) Change ssl_create_cipher_list() so that it automatically 4921 arranges the ciphersuites in reasonable order before starting 4922 to process the rule string. Thus, the definition for "DEFAULT" 4923 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but 4924 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH". 4925 This makes it much easier to arrive at a reasonable default order 4926 in applications for which anonymous ciphers are OK (meaning 4927 that you can't actually use DEFAULT). 4928 [Bodo Moeller; suggested by Victor Duchovni] 4929 4930 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string 4931 processing) into multiple integers instead of setting 4932 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK", 4933 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer. 4934 (These masks as well as the individual bit definitions are hidden 4935 away into the non-exported interface ssl/ssl_locl.h, so this 4936 change to the definition of the SSL_CIPHER structure shouldn't 4937 affect applications.) This give us more bits for each of these 4938 categories, so there is no longer a need to coagulate AES128 and 4939 AES256 into a single algorithm bit, and to coagulate Camellia128 4940 and Camellia256 into a single algorithm bit, which has led to all 4941 kinds of kludges. 4942 4943 Thus, among other things, the kludge introduced in 0.9.7m and 4944 0.9.8e for masking out AES256 independently of AES128 or masking 4945 out Camellia256 independently of AES256 is not needed here in 0.9.9. 4946 4947 With the change, we also introduce new ciphersuite aliases that 4948 so far were missing: "AES128", "AES256", "CAMELLIA128", and 4949 "CAMELLIA256". 4950 [Bodo Moeller] 4951 4952 *) Add support for dsa-with-SHA224 and dsa-with-SHA256. 4953 Use the leftmost N bytes of the signature input if the input is 4954 larger than the prime q (with N being the size in bytes of q). 4955 [Nils Larsch] 4956 4957 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses 4958 it yet and it is largely untested. 4959 [Steve Henson] 4960 4961 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types. 4962 [Nils Larsch] 4963 4964 *) Initial incomplete changes to avoid need for function casts in OpenSSL 4965 some compilers (gcc 4.2 and later) reject their use. Safestack is 4966 reimplemented. Update ASN1 to avoid use of legacy functions. 4967 [Steve Henson] 4968 4969 *) Win32/64 targets are linked with Winsock2. 4970 [Andy Polyakov] 4971 4972 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected 4973 to external functions. This can be used to increase CRL handling 4974 efficiency especially when CRLs are very large by (for example) storing 4975 the CRL revoked certificates in a database. 4976 [Steve Henson] 4977 4978 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so 4979 new CRLs added to a directory can be used. New command line option 4980 -verify_return_error to s_client and s_server. This causes real errors 4981 to be returned by the verify callback instead of carrying on no matter 4982 what. This reflects the way a "real world" verify callback would behave. 4983 [Steve Henson] 4984 4985 *) GOST engine, supporting several GOST algorithms and public key formats. 4986 Kindly donated by Cryptocom. 4987 [Cryptocom] 4988 4989 *) Partial support for Issuing Distribution Point CRL extension. CRLs 4990 partitioned by DP are handled but no indirect CRL or reason partitioning 4991 (yet). Complete overhaul of CRL handling: now the most suitable CRL is 4992 selected via a scoring technique which handles IDP and AKID in CRLs. 4993 [Steve Henson] 4994 4995 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which 4996 will ultimately be used for all verify operations: this will remove the 4997 X509_STORE dependency on certificate verification and allow alternative 4998 lookup methods. X509_STORE based implementations of these two callbacks. 4999 [Steve Henson] 5000 5001 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names. 5002 Modify get_crl() to find a valid (unexpired) CRL if possible. 5003 [Steve Henson] 5004 5005 *) New function X509_CRL_match() to check if two CRLs are identical. Normally 5006 this would be called X509_CRL_cmp() but that name is already used by 5007 a function that just compares CRL issuer names. Cache several CRL 5008 extensions in X509_CRL structure and cache CRLDP in X509. 5009 [Steve Henson] 5010 5011 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name) 5012 this maps equivalent X509_NAME structures into a consistent structure. 5013 Name comparison can then be performed rapidly using memcmp(). 5014 [Steve Henson] 5015 5016 *) Non-blocking OCSP request processing. Add -timeout option to ocsp 5017 utility. 5018 [Steve Henson] 5019 5020 *) Allow digests to supply their own micalg string for S/MIME type using 5021 the ctrl EVP_MD_CTRL_MICALG. 5022 [Steve Henson] 5023 5024 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the 5025 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN 5026 ctrl. It can then customise the structure before and/or after signing 5027 if necessary. 5028 [Steve Henson] 5029 5030 *) New function OBJ_add_sigid() to allow application defined signature OIDs 5031 to be added to OpenSSLs internal tables. New function OBJ_sigid_free() 5032 to free up any added signature OIDs. 5033 [Steve Henson] 5034 5035 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(), 5036 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal 5037 digest and cipher tables. New options added to openssl utility: 5038 list-message-digest-algorithms and list-cipher-algorithms. 5039 [Steve Henson] 5040 5041 *) Change the array representation of binary polynomials: the list 5042 of degrees of non-zero coefficients is now terminated with -1. 5043 Previously it was terminated with 0, which was also part of the 5044 value; thus, the array representation was not applicable to 5045 polynomials where t^0 has coefficient zero. This change makes 5046 the array representation useful in a more general context. 5047 [Douglas Stebila] 5048 5049 *) Various modifications and fixes to SSL/TLS cipher string 5050 handling. For ECC, the code now distinguishes between fixed ECDH 5051 with RSA certificates on the one hand and with ECDSA certificates 5052 on the other hand, since these are separate ciphersuites. The 5053 unused code for Fortezza ciphersuites has been removed. 5054 5055 For consistency with EDH, ephemeral ECDH is now called "EECDH" 5056 (not "ECDHE"). For consistency with the code for DH 5057 certificates, use of ECDH certificates is now considered ECDH 5058 authentication, not RSA or ECDSA authentication (the latter is 5059 merely the CA's signing algorithm and not actively used in the 5060 protocol). 5061 5062 The temporary ciphersuite alias "ECCdraft" is no longer 5063 available, and ECC ciphersuites are no longer excluded from "ALL" 5064 and "DEFAULT". The following aliases now exist for RFC 4492 5065 ciphersuites, most of these by analogy with the DH case: 5066 5067 kECDHr - ECDH cert, signed with RSA 5068 kECDHe - ECDH cert, signed with ECDSA 5069 kECDH - ECDH cert (signed with either RSA or ECDSA) 5070 kEECDH - ephemeral ECDH 5071 ECDH - ECDH cert or ephemeral ECDH 5072 5073 aECDH - ECDH cert 5074 aECDSA - ECDSA cert 5075 ECDSA - ECDSA cert 5076 5077 AECDH - anonymous ECDH 5078 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH") 5079 5080 [Bodo Moeller] 5081 5082 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported. 5083 Use correct micalg parameters depending on digest(s) in signed message. 5084 [Steve Henson] 5085 5086 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process 5087 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code. 5088 [Steve Henson] 5089 5090 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit 5091 an engine to register a method. Add ENGINE lookups for methods and 5092 functional reference processing. 5093 [Steve Henson] 5094 5095 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of 5096 EVP_{Sign,Verify}* which allow an application to customise the signature 5097 process. 5098 [Steve Henson] 5099 5100 *) New -resign option to smime utility. This adds one or more signers 5101 to an existing PKCS#7 signedData structure. Also -md option to use an 5102 alternative message digest algorithm for signing. 5103 [Steve Henson] 5104 5105 *) Tidy up PKCS#7 routines and add new functions to make it easier to 5106 create PKCS7 structures containing multiple signers. Update smime 5107 application to support multiple signers. 5108 [Steve Henson] 5109 5110 *) New -macalg option to pkcs12 utility to allow setting of an alternative 5111 digest MAC. 5112 [Steve Henson] 5113 5114 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC. 5115 Reorganize PBE internals to lookup from a static table using NIDs, 5116 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl: 5117 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative 5118 PRF which will be automatically used with PBES2. 5119 [Steve Henson] 5120 5121 *) Replace the algorithm specific calls to generate keys in "req" with the 5122 new API. 5123 [Steve Henson] 5124 5125 *) Update PKCS#7 enveloped data routines to use new API. This is now 5126 supported by any public key method supporting the encrypt operation. A 5127 ctrl is added to allow the public key algorithm to examine or modify 5128 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is 5129 a no op. 5130 [Steve Henson] 5131 5132 *) Add a ctrl to asn1 method to allow a public key algorithm to express 5133 a default digest type to use. In most cases this will be SHA1 but some 5134 algorithms (such as GOST) need to specify an alternative digest. The 5135 return value indicates how strong the preference is 1 means optional and 5136 2 is mandatory (that is it is the only supported type). Modify 5137 ASN1_item_sign() to accept a NULL digest argument to indicate it should 5138 use the default md. Update openssl utilities to use the default digest 5139 type for signing if it is not explicitly indicated. 5140 [Steve Henson] 5141 5142 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New 5143 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant 5144 signing method from the key type. This effectively removes the link 5145 between digests and public key types. 5146 [Steve Henson] 5147 5148 *) Add an OID cross reference table and utility functions. Its purpose is to 5149 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1, 5150 rsaEncryption. This will allow some of the algorithm specific hackery 5151 needed to use the correct OID to be removed. 5152 [Steve Henson] 5153 5154 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO 5155 structures for PKCS7_sign(). They are now set up by the relevant public 5156 key ASN1 method. 5157 [Steve Henson] 5158 5159 *) Add provisional EC pkey method with support for ECDSA and ECDH. 5160 [Steve Henson] 5161 5162 *) Add support for key derivation (agreement) in the API, DH method and 5163 pkeyutl. 5164 [Steve Henson] 5165 5166 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support 5167 public and private key formats. As a side effect these add additional 5168 command line functionality not previously available: DSA signatures can be 5169 generated and verified using pkeyutl and DH key support and generation in 5170 pkey, genpkey. 5171 [Steve Henson] 5172 5173 *) BeOS support. 5174 [Oliver Tappe <zooey@hirschkaefer.de>] 5175 5176 *) New make target "install_html_docs" installs HTML renditions of the 5177 manual pages. 5178 [Oliver Tappe <zooey@hirschkaefer.de>] 5179 5180 *) New utility "genpkey" this is analogous to "genrsa" etc except it can 5181 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to 5182 support key and parameter generation and add initial key generation 5183 functionality for RSA. 5184 [Steve Henson] 5185 5186 *) Add functions for main EVP_PKEY_method operations. The undocumented 5187 functions EVP_PKEY_{encrypt,decrypt} have been renamed to 5188 EVP_PKEY_{encrypt,decrypt}_old. 5189 [Steve Henson] 5190 5191 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public 5192 key API, doesn't do much yet. 5193 [Steve Henson] 5194 5195 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about 5196 public key algorithms. New option to openssl utility: 5197 "list-public-key-algorithms" to print out info. 5198 [Steve Henson] 5199 5200 *) Implement the Supported Elliptic Curves Extension for 5201 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 5202 [Douglas Stebila] 5203 5204 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or 5205 EVP_CIPHER structures to avoid later problems in EVP_cleanup(). 5206 [Steve Henson] 5207 5208 *) New utilities pkey and pkeyparam. These are similar to algorithm specific 5209 utilities such as rsa, dsa, dsaparam etc except they process any key 5210 type. 5211 [Steve Henson] 5212 5213 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New 5214 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(), 5215 EVP_PKEY_print_param() to print public key data from an EVP_PKEY 5216 structure. 5217 [Steve Henson] 5218 5219 *) Initial support for pluggable public key ASN1. 5220 De-spaghettify the public key ASN1 handling. Move public and private 5221 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate 5222 algorithm specific handling to a single module within the relevant 5223 algorithm directory. Add functions to allow (near) opaque processing 5224 of public and private key structures. 5225 [Steve Henson] 5226 5227 *) Implement the Supported Point Formats Extension for 5228 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 5229 [Douglas Stebila] 5230 5231 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members 5232 for the psk identity [hint] and the psk callback functions to the 5233 SSL_SESSION, SSL and SSL_CTX structure. 5234 5235 New ciphersuites: 5236 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA, 5237 PSK-AES256-CBC-SHA 5238 5239 New functions: 5240 SSL_CTX_use_psk_identity_hint 5241 SSL_get_psk_identity_hint 5242 SSL_get_psk_identity 5243 SSL_use_psk_identity_hint 5244 5245 [Mika Kousa and Pasi Eronen of Nokia Corporation] 5246 5247 *) Add RFC 3161 compliant time stamp request creation, response generation 5248 and response verification functionality. 5249 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project] 5250 5251 *) Add initial support for TLS extensions, specifically for the server_name 5252 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 5253 have new members for a host name. The SSL data structure has an 5254 additional member SSL_CTX *initial_ctx so that new sessions can be 5255 stored in that context to allow for session resumption, even after the 5256 SSL has been switched to a new SSL_CTX in reaction to a client's 5257 server_name extension. 5258 5259 New functions (subject to change): 5260 5261 SSL_get_servername() 5262 SSL_get_servername_type() 5263 SSL_set_SSL_CTX() 5264 5265 New CTRL codes and macros (subject to change): 5266 5267 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 5268 - SSL_CTX_set_tlsext_servername_callback() 5269 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 5270 - SSL_CTX_set_tlsext_servername_arg() 5271 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 5272 5273 openssl s_client has a new '-servername ...' option. 5274 5275 openssl s_server has new options '-servername_host ...', '-cert2 ...', 5276 '-key2 ...', '-servername_fatal' (subject to change). This allows 5277 testing the HostName extension for a specific single host name ('-cert' 5278 and '-key' remain fallbacks for handshakes without HostName 5279 negotiation). If the unrecognized_name alert has to be sent, this by 5280 default is a warning; it becomes fatal with the '-servername_fatal' 5281 option. 5282 5283 [Peter Sylvester, Remy Allais, Christophe Renou] 5284 5285 *) Whirlpool hash implementation is added. 5286 [Andy Polyakov] 5287 5288 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to 5289 bn(64,32). Because of instruction set limitations it doesn't have 5290 any negative impact on performance. This was done mostly in order 5291 to make it possible to share assembler modules, such as bn_mul_mont 5292 implementations, between 32- and 64-bit builds without hassle. 5293 [Andy Polyakov] 5294 5295 *) Move code previously exiled into file crypto/ec/ec2_smpt.c 5296 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP 5297 macro. 5298 [Bodo Moeller] 5299 5300 *) New candidate for BIGNUM assembler implementation, bn_mul_mont, 5301 dedicated Montgomery multiplication procedure, is introduced. 5302 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher 5303 "64-bit" performance on certain 32-bit targets. 5304 [Andy Polyakov] 5305 5306 *) New option SSL_OP_NO_COMP to disable use of compression selectively 5307 in SSL structures. New SSL ctrl to set maximum send fragment size. 5308 Save memory by setting the I/O buffer sizes dynamically instead of 5309 using the maximum available value. 5310 [Steve Henson] 5311 5312 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code 5313 in addition to the text details. 5314 [Bodo Moeller] 5315 5316 *) Very, very preliminary EXPERIMENTAL support for printing of general 5317 ASN1 structures. This currently produces rather ugly output and doesn't 5318 handle several customised structures at all. 5319 [Steve Henson] 5320 5321 *) Integrated support for PVK file format and some related formats such 5322 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support 5323 these in the 'rsa' and 'dsa' utilities. 5324 [Steve Henson] 5325 5326 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line. 5327 [Steve Henson] 5328 5329 *) Remove the ancient ASN1_METHOD code. This was only ever used in one 5330 place for the (very old) "NETSCAPE" format certificates which are now 5331 handled using new ASN1 code equivalents. 5332 [Steve Henson] 5333 5334 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD 5335 pointer and make the SSL_METHOD parameter in SSL_CTX_new, 5336 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'. 5337 [Nils Larsch] 5338 5339 *) Modify CRL distribution points extension code to print out previously 5340 unsupported fields. Enhance extension setting code to allow setting of 5341 all fields. 5342 [Steve Henson] 5343 5344 *) Add print and set support for Issuing Distribution Point CRL extension. 5345 [Steve Henson] 5346 5347 *) Change 'Configure' script to enable Camellia by default. 5348 [NTT] 5349 5350 Changes between 0.9.8m and 0.9.8n [24 Mar 2010] 5351 5352 *) When rejecting SSL/TLS records due to an incorrect version number, never 5353 update s->server with a new major version number. As of 5354 - OpenSSL 0.9.8m if 'short' is a 16-bit type, 5355 - OpenSSL 0.9.8f if 'short' is longer than 16 bits, 5356 the previous behavior could result in a read attempt at NULL when 5357 receiving specific incorrect SSL/TLS records once record payload 5358 protection is active. (CVE-2010-0740) 5359 [Bodo Moeller, Adam Langley <agl@chromium.org>] 5360 5361 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL 5362 could be crashed if the relevant tables were not present (e.g. chrooted). 5363 [Tomas Hoger <thoger@redhat.com>] 5364 5365 Changes between 0.9.8l and 0.9.8m [25 Feb 2010] 5366 5367 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245) 5368 [Martin Olsson, Neel Mehta] 5369 5370 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to 5371 accommodate for stack sorting, always a write lock!). 5372 [Bodo Moeller] 5373 5374 *) On some versions of WIN32 Heap32Next is very slow. This can cause 5375 excessive delays in the RAND_poll(): over a minute. As a workaround 5376 include a time check in the inner Heap32Next loop too. 5377 [Steve Henson] 5378 5379 *) The code that handled flushing of data in SSL/TLS originally used the 5380 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused 5381 the problem outlined in PR#1949. The fix suggested there however can 5382 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions 5383 of Apache). So instead simplify the code to flush unconditionally. 5384 This should be fine since flushing with no data to flush is a no op. 5385 [Steve Henson] 5386 5387 *) Handle TLS versions 2.0 and later properly and correctly use the 5388 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way 5389 off ancient servers have a habit of sticking around for a while... 5390 [Steve Henson] 5391 5392 *) Modify compression code so it frees up structures without using the 5393 ex_data callbacks. This works around a problem where some applications 5394 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when 5395 restarting) then use compression (e.g. SSL with compression) later. 5396 This results in significant per-connection memory leaks and 5397 has caused some security issues including CVE-2008-1678 and 5398 CVE-2009-4355. 5399 [Steve Henson] 5400 5401 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't 5402 change when encrypting or decrypting. 5403 [Bodo Moeller] 5404 5405 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to 5406 connect and renegotiate with servers which do not support RI. 5407 Until RI is more widely deployed this option is enabled by default. 5408 [Steve Henson] 5409 5410 *) Add "missing" ssl ctrls to clear options and mode. 5411 [Steve Henson] 5412 5413 *) If client attempts to renegotiate and doesn't support RI respond with 5414 a no_renegotiation alert as required by RFC5746. Some renegotiating 5415 TLS clients will continue a connection gracefully when they receive 5416 the alert. Unfortunately OpenSSL mishandled this alert and would hang 5417 waiting for a server hello which it will never receive. Now we treat a 5418 received no_renegotiation alert as a fatal error. This is because 5419 applications requesting a renegotiation might well expect it to succeed 5420 and would have no code in place to handle the server denying it so the 5421 only safe thing to do is to terminate the connection. 5422 [Steve Henson] 5423 5424 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if 5425 peer supports secure renegotiation and 0 otherwise. Print out peer 5426 renegotiation support in s_client/s_server. 5427 [Steve Henson] 5428 5429 *) Replace the highly broken and deprecated SPKAC certification method with 5430 the updated NID creation version. This should correctly handle UTF8. 5431 [Steve Henson] 5432 5433 *) Implement RFC5746. Re-enable renegotiation but require the extension 5434 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 5435 turns out to be a bad idea. It has been replaced by 5436 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with 5437 SSL_CTX_set_options(). This is really not recommended unless you 5438 know what you are doing. 5439 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson] 5440 5441 *) Fixes to stateless session resumption handling. Use initial_ctx when 5442 issuing and attempting to decrypt tickets in case it has changed during 5443 servername handling. Use a non-zero length session ID when attempting 5444 stateless session resumption: this makes it possible to determine if 5445 a resumption has occurred immediately after receiving server hello 5446 (several places in OpenSSL subtly assume this) instead of later in 5447 the handshake. 5448 [Steve Henson] 5449 5450 *) The functions ENGINE_ctrl(), OPENSSL_isservice(), 5451 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error 5452 fixes for a few places where the return code is not checked 5453 correctly. 5454 [Julia Lawall <julia@diku.dk>] 5455 5456 *) Add --strict-warnings option to Configure script to include devteam 5457 warnings in other configurations. 5458 [Steve Henson] 5459 5460 *) Add support for --libdir option and LIBDIR variable in makefiles. This 5461 makes it possible to install openssl libraries in locations which 5462 have names other than "lib", for example "/usr/lib64" which some 5463 systems need. 5464 [Steve Henson, based on patch from Jeremy Utley] 5465 5466 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of 5467 X690 8.9.12 and can produce some misleading textual output of OIDs. 5468 [Steve Henson, reported by Dan Kaminsky] 5469 5470 *) Delete MD2 from algorithm tables. This follows the recommendation in 5471 several standards that it is not used in new applications due to 5472 several cryptographic weaknesses. For binary compatibility reasons 5473 the MD2 API is still compiled in by default. 5474 [Steve Henson] 5475 5476 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved 5477 and restored. 5478 [Steve Henson] 5479 5480 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and 5481 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name 5482 clash. 5483 [Guenter <lists@gknw.net>] 5484 5485 *) Fix the server certificate chain building code to use X509_verify_cert(), 5486 it used to have an ad-hoc builder which was unable to cope with anything 5487 other than a simple chain. 5488 [David Woodhouse <dwmw2@infradead.org>, Steve Henson] 5489 5490 *) Don't check self signed certificate signatures in X509_verify_cert() 5491 by default (a flag can override this): it just wastes time without 5492 adding any security. As a useful side effect self signed root CAs 5493 with non-FIPS digests are now usable in FIPS mode. 5494 [Steve Henson] 5495 5496 *) In dtls1_process_out_of_seq_message() the check if the current message 5497 is already buffered was missing. For every new message was memory 5498 allocated, allowing an attacker to perform an denial of service attack 5499 with sending out of seq handshake messages until there is no memory 5500 left. Additionally every future message was buffered, even if the 5501 sequence number made no sense and would be part of another handshake. 5502 So only messages with sequence numbers less than 10 in advance will be 5503 buffered. (CVE-2009-1378) 5504 [Robin Seggelmann, discovered by Daniel Mentz] 5505 5506 *) Records are buffered if they arrive with a future epoch to be 5507 processed after finishing the corresponding handshake. There is 5508 currently no limitation to this buffer allowing an attacker to perform 5509 a DOS attack with sending records with future epochs until there is no 5510 memory left. This patch adds the pqueue_size() function to determine 5511 the size of a buffer and limits the record buffer to 100 entries. 5512 (CVE-2009-1377) 5513 [Robin Seggelmann, discovered by Daniel Mentz] 5514 5515 *) Keep a copy of frag->msg_header.frag_len so it can be used after the 5516 parent structure is freed. (CVE-2009-1379) 5517 [Daniel Mentz] 5518 5519 *) Handle non-blocking I/O properly in SSL_shutdown() call. 5520 [Darryl Miles <darryl-mailinglists@netbauds.net>] 5521 5522 *) Add 2.5.4.* OIDs 5523 [Ilya O. <vrghost@gmail.com>] 5524 5525 Changes between 0.9.8k and 0.9.8l [5 Nov 2009] 5526 5527 *) Disable renegotiation completely - this fixes a severe security 5528 problem (CVE-2009-3555) at the cost of breaking all 5529 renegotiation. Renegotiation can be re-enabled by setting 5530 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at 5531 run-time. This is really not recommended unless you know what 5532 you're doing. 5533 [Ben Laurie] 5534 5535 Changes between 0.9.8j and 0.9.8k [25 Mar 2009] 5536 5537 *) Don't set val to NULL when freeing up structures, it is freed up by 5538 underlying code. If sizeof(void *) > sizeof(long) this can result in 5539 zeroing past the valid field. (CVE-2009-0789) 5540 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>] 5541 5542 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not 5543 checked correctly. This would allow some invalid signed attributes to 5544 appear to verify correctly. (CVE-2009-0591) 5545 [Ivan Nestlerode <inestlerode@us.ibm.com>] 5546 5547 *) Reject UniversalString and BMPString types with invalid lengths. This 5548 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have 5549 a legal length. (CVE-2009-0590) 5550 [Steve Henson] 5551 5552 *) Set S/MIME signing as the default purpose rather than setting it 5553 unconditionally. This allows applications to override it at the store 5554 level. 5555 [Steve Henson] 5556 5557 *) Permit restricted recursion of ASN1 strings. This is needed in practice 5558 to handle some structures. 5559 [Steve Henson] 5560 5561 *) Improve efficiency of mem_gets: don't search whole buffer each time 5562 for a '\n' 5563 [Jeremy Shapiro <jnshapir@us.ibm.com>] 5564 5565 *) New -hex option for openssl rand. 5566 [Matthieu Herrb] 5567 5568 *) Print out UTF8String and NumericString when parsing ASN1. 5569 [Steve Henson] 5570 5571 *) Support NumericString type for name components. 5572 [Steve Henson] 5573 5574 *) Allow CC in the environment to override the automatically chosen 5575 compiler. Note that nothing is done to ensure flags work with the 5576 chosen compiler. 5577 [Ben Laurie] 5578 5579 Changes between 0.9.8i and 0.9.8j [07 Jan 2009] 5580 5581 *) Properly check EVP_VerifyFinal() and similar return values 5582 (CVE-2008-5077). 5583 [Ben Laurie, Bodo Moeller, Google Security Team] 5584 5585 *) Enable TLS extensions by default. 5586 [Ben Laurie] 5587 5588 *) Allow the CHIL engine to be loaded, whether the application is 5589 multithreaded or not. (This does not release the developer from the 5590 obligation to set up the dynamic locking callbacks.) 5591 [Sander Temme <sander@temme.net>] 5592 5593 *) Use correct exit code if there is an error in dgst command. 5594 [Steve Henson; problem pointed out by Roland Dirlewanger] 5595 5596 *) Tweak Configure so that you need to say "experimental-jpake" to enable 5597 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications. 5598 [Bodo Moeller] 5599 5600 *) Add experimental JPAKE support, including demo authentication in 5601 s_client and s_server. 5602 [Ben Laurie] 5603 5604 *) Set the comparison function in v3_addr_canonize(). 5605 [Rob Austein <sra@hactrn.net>] 5606 5607 *) Add support for XMPP STARTTLS in s_client. 5608 [Philip Paeps <philip@freebsd.org>] 5609 5610 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior 5611 to ensure that even with this option, only ciphersuites in the 5612 server's preference list will be accepted. (Note that the option 5613 applies only when resuming a session, so the earlier behavior was 5614 just about the algorithm choice for symmetric cryptography.) 5615 [Bodo Moeller] 5616 5617 Changes between 0.9.8h and 0.9.8i [15 Sep 2008] 5618 5619 *) Fix NULL pointer dereference if a DTLS server received 5620 ChangeCipherSpec as first record (CVE-2009-1386). 5621 [PR #1679] 5622 5623 *) Fix a state transition in s3_srvr.c and d1_srvr.c 5624 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...). 5625 [Nagendra Modadugu] 5626 5627 *) The fix in 0.9.8c that supposedly got rid of unsafe 5628 double-checked locking was incomplete for RSA blinding, 5629 addressing just one layer of what turns out to have been 5630 doubly unsafe triple-checked locking. 5631 5632 So now fix this for real by retiring the MONT_HELPER macro 5633 in crypto/rsa/rsa_eay.c. 5634 5635 [Bodo Moeller; problem pointed out by Marius Schilder] 5636 5637 *) Various precautionary measures: 5638 5639 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h). 5640 5641 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c). 5642 (NB: This would require knowledge of the secret session ticket key 5643 to exploit, in which case you'd be SOL either way.) 5644 5645 - Change bn_nist.c so that it will properly handle input BIGNUMs 5646 outside the expected range. 5647 5648 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG 5649 builds. 5650 5651 [Neel Mehta, Bodo Moeller] 5652 5653 *) Allow engines to be "soft loaded" - i.e. optionally don't die if 5654 the load fails. Useful for distros. 5655 [Ben Laurie and the FreeBSD team] 5656 5657 *) Add support for Local Machine Keyset attribute in PKCS#12 files. 5658 [Steve Henson] 5659 5660 *) Fix BN_GF2m_mod_arr() top-bit cleanup code. 5661 [Huang Ying] 5662 5663 *) Expand ENGINE to support engine supplied SSL client certificate functions. 5664 5665 This work was sponsored by Logica. 5666 [Steve Henson] 5667 5668 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows 5669 keystores. Support for SSL/TLS client authentication too. 5670 Not compiled unless enable-capieng specified to Configure. 5671 5672 This work was sponsored by Logica. 5673 [Steve Henson] 5674 5675 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using 5676 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain 5677 attribute creation routines such as certificate requests and PKCS#12 5678 files. 5679 [Steve Henson] 5680 5681 Changes between 0.9.8g and 0.9.8h [28 May 2008] 5682 5683 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS 5684 handshake which could lead to a client crash as found using the 5685 Codenomicon TLS test suite (CVE-2008-1672) 5686 [Steve Henson, Mark Cox] 5687 5688 *) Fix double free in TLS server name extensions which could lead to 5689 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891) 5690 [Joe Orton] 5691 5692 *) Clear error queue in SSL_CTX_use_certificate_chain_file() 5693 5694 Clear the error queue to ensure that error entries left from 5695 older function calls do not interfere with the correct operation. 5696 [Lutz Jaenicke, Erik de Castro Lopo] 5697 5698 *) Remove root CA certificates of commercial CAs: 5699 5700 The OpenSSL project does not recommend any specific CA and does not 5701 have any policy with respect to including or excluding any CA. 5702 Therefore it does not make any sense to ship an arbitrary selection 5703 of root CA certificates with the OpenSSL software. 5704 [Lutz Jaenicke] 5705 5706 *) RSA OAEP patches to fix two separate invalid memory reads. 5707 The first one involves inputs when 'lzero' is greater than 5708 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes 5709 before the beginning of from). The second one involves inputs where 5710 the 'db' section contains nothing but zeroes (there is a one-byte 5711 invalid read after the end of 'db'). 5712 [Ivan Nestlerode <inestlerode@us.ibm.com>] 5713 5714 *) Partial backport from 0.9.9-dev: 5715 5716 Introduce bn_mul_mont (dedicated Montgomery multiplication 5717 procedure) as a candidate for BIGNUM assembler implementation. 5718 While 0.9.9-dev uses assembler for various architectures, only 5719 x86_64 is available by default here in the 0.9.8 branch, and 5720 32-bit x86 is available through a compile-time setting. 5721 5722 To try the 32-bit x86 assembler implementation, use Configure 5723 option "enable-montasm" (which exists only for this backport). 5724 5725 As "enable-montasm" for 32-bit x86 disclaims code stability 5726 anyway, in this constellation we activate additional code 5727 backported from 0.9.9-dev for further performance improvements, 5728 namely BN_from_montgomery_word. (To enable this otherwise, 5729 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".) 5730 5731 [Andy Polyakov (backport partially by Bodo Moeller)] 5732 5733 *) Add TLS session ticket callback. This allows an application to set 5734 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed 5735 values. This is useful for key rollover for example where several key 5736 sets may exist with different names. 5737 [Steve Henson] 5738 5739 *) Reverse ENGINE-internal logic for caching default ENGINE handles. 5740 This was broken until now in 0.9.8 releases, such that the only way 5741 a registered ENGINE could be used (assuming it initialises 5742 successfully on the host) was to explicitly set it as the default 5743 for the relevant algorithms. This is in contradiction with 0.9.7 5744 behaviour and the documentation. With this fix, when an ENGINE is 5745 registered into a given algorithm's table of implementations, the 5746 'uptodate' flag is reset so that auto-discovery will be used next 5747 time a new context for that algorithm attempts to select an 5748 implementation. 5749 [Ian Lister (tweaked by Geoff Thorpe)] 5750 5751 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9 5752 implementation in the following ways: 5753 5754 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be 5755 hard coded. 5756 5757 Lack of BER streaming support means one pass streaming processing is 5758 only supported if data is detached: setting the streaming flag is 5759 ignored for embedded content. 5760 5761 CMS support is disabled by default and must be explicitly enabled 5762 with the enable-cms configuration option. 5763 [Steve Henson] 5764 5765 *) Update the GMP engine glue to do direct copies between BIGNUM and 5766 mpz_t when openssl and GMP use the same limb size. Otherwise the 5767 existing "conversion via a text string export" trick is still used. 5768 [Paul Sheer <paulsheer@gmail.com>] 5769 5770 *) Zlib compression BIO. This is a filter BIO which compressed and 5771 uncompresses any data passed through it. 5772 [Steve Henson] 5773 5774 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement 5775 RFC3394 compatible AES key wrapping. 5776 [Steve Henson] 5777 5778 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0(): 5779 sets string data without copying. X509_ALGOR_set0() and 5780 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier) 5781 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data 5782 from an X509_ATTRIBUTE structure optionally checking it occurs only 5783 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied 5784 data. 5785 [Steve Henson] 5786 5787 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set() 5788 to get the expected BN_FLG_CONSTTIME behavior. 5789 [Bodo Moeller (Google)] 5790 5791 *) Netware support: 5792 5793 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets 5794 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT) 5795 - added some more tests to do_tests.pl 5796 - fixed RunningProcess usage so that it works with newer LIBC NDKs too 5797 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency 5798 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc, 5799 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc 5800 - various changes to netware.pl to enable gcc-cross builds on Win32 5801 platform 5802 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD) 5803 - various changes to fix missing prototype warnings 5804 - fixed x86nasm.pl to create correct asm files for NASM COFF output 5805 - added AES, WHIRLPOOL and CPUID assembler code to build files 5806 - added missing AES assembler make rules to mk1mf.pl 5807 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply 5808 [Guenter Knauf <eflash@gmx.net>] 5809 5810 *) Implement certificate status request TLS extension defined in RFC3546. 5811 A client can set the appropriate parameters and receive the encoded 5812 OCSP response via a callback. A server can query the supplied parameters 5813 and set the encoded OCSP response in the callback. Add simplified examples 5814 to s_client and s_server. 5815 [Steve Henson] 5816 5817 Changes between 0.9.8f and 0.9.8g [19 Oct 2007] 5818 5819 *) Fix various bugs: 5820 + Binary incompatibility of ssl_ctx_st structure 5821 + DTLS interoperation with non-compliant servers 5822 + Don't call get_session_cb() without proposed session 5823 + Fix ia64 assembler code 5824 [Andy Polyakov, Steve Henson] 5825 5826 Changes between 0.9.8e and 0.9.8f [11 Oct 2007] 5827 5828 *) DTLS Handshake overhaul. There were longstanding issues with 5829 OpenSSL DTLS implementation, which were making it impossible for 5830 RFC 4347 compliant client to communicate with OpenSSL server. 5831 Unfortunately just fixing these incompatibilities would "cut off" 5832 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e 5833 server keeps tolerating non RFC compliant syntax. The opposite is 5834 not true, 0.9.8f client can not communicate with earlier server. 5835 This update even addresses CVE-2007-4995. 5836 [Andy Polyakov] 5837 5838 *) Changes to avoid need for function casts in OpenSSL: some compilers 5839 (gcc 4.2 and later) reject their use. 5840 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>, 5841 Steve Henson] 5842 5843 *) Add RFC4507 support to OpenSSL. This includes the corrections in 5844 RFC4507bis. The encrypted ticket format is an encrypted encoded 5845 SSL_SESSION structure, that way new session features are automatically 5846 supported. 5847 5848 If a client application caches session in an SSL_SESSION structure 5849 support is transparent because tickets are now stored in the encoded 5850 SSL_SESSION. 5851 5852 The SSL_CTX structure automatically generates keys for ticket 5853 protection in servers so again support should be possible 5854 with no application modification. 5855 5856 If a client or server wishes to disable RFC4507 support then the option 5857 SSL_OP_NO_TICKET can be set. 5858 5859 Add a TLS extension debugging callback to allow the contents of any client 5860 or server extensions to be examined. 5861 5862 This work was sponsored by Google. 5863 [Steve Henson] 5864 5865 *) Add initial support for TLS extensions, specifically for the server_name 5866 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 5867 have new members for a host name. The SSL data structure has an 5868 additional member SSL_CTX *initial_ctx so that new sessions can be 5869 stored in that context to allow for session resumption, even after the 5870 SSL has been switched to a new SSL_CTX in reaction to a client's 5871 server_name extension. 5872 5873 New functions (subject to change): 5874 5875 SSL_get_servername() 5876 SSL_get_servername_type() 5877 SSL_set_SSL_CTX() 5878 5879 New CTRL codes and macros (subject to change): 5880 5881 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 5882 - SSL_CTX_set_tlsext_servername_callback() 5883 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 5884 - SSL_CTX_set_tlsext_servername_arg() 5885 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 5886 5887 openssl s_client has a new '-servername ...' option. 5888 5889 openssl s_server has new options '-servername_host ...', '-cert2 ...', 5890 '-key2 ...', '-servername_fatal' (subject to change). This allows 5891 testing the HostName extension for a specific single host name ('-cert' 5892 and '-key' remain fallbacks for handshakes without HostName 5893 negotiation). If the unrecognized_name alert has to be sent, this by 5894 default is a warning; it becomes fatal with the '-servername_fatal' 5895 option. 5896 5897 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson] 5898 5899 *) Add AES and SSE2 assembly language support to VC++ build. 5900 [Steve Henson] 5901 5902 *) Mitigate attack on final subtraction in Montgomery reduction. 5903 [Andy Polyakov] 5904 5905 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0 5906 (which previously caused an internal error). 5907 [Bodo Moeller] 5908 5909 *) Squeeze another 10% out of IGE mode when in != out. 5910 [Ben Laurie] 5911 5912 *) AES IGE mode speedup. 5913 [Dean Gaudet (Google)] 5914 5915 *) Add the Korean symmetric 128-bit cipher SEED (see 5916 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and 5917 add SEED ciphersuites from RFC 4162: 5918 5919 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA" 5920 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA" 5921 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA" 5922 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA" 5923 5924 To minimize changes between patchlevels in the OpenSSL 0.9.8 5925 series, SEED remains excluded from compilation unless OpenSSL 5926 is configured with 'enable-seed'. 5927 [KISA, Bodo Moeller] 5928 5929 *) Mitigate branch prediction attacks, which can be practical if a 5930 single processor is shared, allowing a spy process to extract 5931 information. For detailed background information, see 5932 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron, 5933 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL 5934 and Necessary Software Countermeasures"). The core of the change 5935 are new versions BN_div_no_branch() and 5936 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(), 5937 respectively, which are slower, but avoid the security-relevant 5938 conditional branches. These are automatically called by BN_div() 5939 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one 5940 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to 5941 remove a conditional branch. 5942 5943 BN_FLG_CONSTTIME is the new name for the previous 5944 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just 5945 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag 5946 in the exponent causes BN_mod_exp_mont() to use the alternative 5947 implementation in BN_mod_exp_mont_consttime().) The old name 5948 remains as a deprecated alias. 5949 5950 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general 5951 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses 5952 constant-time implementations for more than just exponentiation. 5953 Here too the old name is kept as a deprecated alias. 5954 5955 BN_BLINDING_new() will now use BN_dup() for the modulus so that 5956 the BN_BLINDING structure gets an independent copy of the 5957 modulus. This means that the previous "BIGNUM *m" argument to 5958 BN_BLINDING_new() and to BN_BLINDING_create_param() now 5959 essentially becomes "const BIGNUM *m", although we can't actually 5960 change this in the header file before 0.9.9. It allows 5961 RSA_setup_blinding() to use BN_with_flags() on the modulus to 5962 enable BN_FLG_CONSTTIME. 5963 5964 [Matthew D Wood (Intel Corp)] 5965 5966 *) In the SSL/TLS server implementation, be strict about session ID 5967 context matching (which matters if an application uses a single 5968 external cache for different purposes). Previously, 5969 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was 5970 set. This did ensure strict client verification, but meant that, 5971 with applications using a single external cache for quite 5972 different requirements, clients could circumvent ciphersuite 5973 restrictions for a given session ID context by starting a session 5974 in a different context. 5975 [Bodo Moeller] 5976 5977 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 5978 a ciphersuite string such as "DEFAULT:RSA" cannot enable 5979 authentication-only ciphersuites. 5980 [Bodo Moeller] 5981 5982 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was 5983 not complete and could lead to a possible single byte overflow 5984 (CVE-2007-5135) [Ben Laurie] 5985 5986 Changes between 0.9.8d and 0.9.8e [23 Feb 2007] 5987 5988 *) Since AES128 and AES256 (and similarly Camellia128 and 5989 Camellia256) share a single mask bit in the logic of 5990 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 5991 kludge to work properly if AES128 is available and AES256 isn't 5992 (or if Camellia128 is available and Camellia256 isn't). 5993 [Victor Duchovni] 5994 5995 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c 5996 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters): 5997 When a point or a seed is encoded in a BIT STRING, we need to 5998 prevent the removal of trailing zero bits to get the proper DER 5999 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case 6000 of a NamedBitList, for which trailing 0 bits need to be removed.) 6001 [Bodo Moeller] 6002 6003 *) Have SSL/TLS server implementation tolerate "mismatched" record 6004 protocol version while receiving ClientHello even if the 6005 ClientHello is fragmented. (The server can't insist on the 6006 particular protocol version it has chosen before the ServerHello 6007 message has informed the client about his choice.) 6008 [Bodo Moeller] 6009 6010 *) Add RFC 3779 support. 6011 [Rob Austein for ARIN, Ben Laurie] 6012 6013 *) Load error codes if they are not already present instead of using a 6014 static variable. This allows them to be cleanly unloaded and reloaded. 6015 Improve header file function name parsing. 6016 [Steve Henson] 6017 6018 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO 6019 or CAPABILITY handshake as required by RFCs. 6020 [Goetz Babin-Ebell] 6021 6022 Changes between 0.9.8c and 0.9.8d [28 Sep 2006] 6023 6024 *) Introduce limits to prevent malicious keys being able to 6025 cause a denial of service. (CVE-2006-2940) 6026 [Steve Henson, Bodo Moeller] 6027 6028 *) Fix ASN.1 parsing of certain invalid structures that can result 6029 in a denial of service. (CVE-2006-2937) [Steve Henson] 6030 6031 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 6032 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 6033 6034 *) Fix SSL client code which could crash if connecting to a 6035 malicious SSLv2 server. (CVE-2006-4343) 6036 [Tavis Ormandy and Will Drewry, Google Security Team] 6037 6038 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites 6039 match only those. Before that, "AES256-SHA" would be interpreted 6040 as a pattern and match "AES128-SHA" too (since AES128-SHA got 6041 the same strength classification in 0.9.7h) as we currently only 6042 have a single AES bit in the ciphersuite description bitmap. 6043 That change, however, also applied to ciphersuite strings such as 6044 "RC4-MD5" that intentionally matched multiple ciphersuites -- 6045 namely, SSL 2.0 ciphersuites in addition to the more common ones 6046 from SSL 3.0/TLS 1.0. 6047 6048 So we change the selection algorithm again: Naming an explicit 6049 ciphersuite selects this one ciphersuite, and any other similar 6050 ciphersuite (same bitmap) from *other* protocol versions. 6051 Thus, "RC4-MD5" again will properly select both the SSL 2.0 6052 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite. 6053 6054 Since SSL 2.0 does not have any ciphersuites for which the 6055 128/256 bit distinction would be relevant, this works for now. 6056 The proper fix will be to use different bits for AES128 and 6057 AES256, which would have avoided the problems from the beginning; 6058 however, bits are scarce, so we can only do this in a new release 6059 (not just a patchlevel) when we can change the SSL_CIPHER 6060 definition to split the single 'unsigned long mask' bitmap into 6061 multiple values to extend the available space. 6062 6063 [Bodo Moeller] 6064 6065 Changes between 0.9.8b and 0.9.8c [05 Sep 2006] 6066 6067 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 6068 (CVE-2006-4339) [Ben Laurie and Google Security Team] 6069 6070 *) Add AES IGE and biIGE modes. 6071 [Ben Laurie] 6072 6073 *) Change the Unix randomness entropy gathering to use poll() when 6074 possible instead of select(), since the latter has some 6075 undesirable limitations. 6076 [Darryl Miles via Richard Levitte and Bodo Moeller] 6077 6078 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special 6079 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites 6080 cannot be implicitly activated as part of, e.g., the "AES" alias. 6081 However, please upgrade to OpenSSL 0.9.9[-dev] for 6082 non-experimental use of the ECC ciphersuites to get TLS extension 6083 support, which is required for curve and point format negotiation 6084 to avoid potential handshake problems. 6085 [Bodo Moeller] 6086 6087 *) Disable rogue ciphersuites: 6088 6089 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 6090 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 6091 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 6092 6093 The latter two were purportedly from 6094 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 6095 appear there. 6096 6097 Also deactivate the remaining ciphersuites from 6098 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 6099 unofficial, and the ID has long expired. 6100 [Bodo Moeller] 6101 6102 *) Fix RSA blinding Heisenbug (problems sometimes occurred on 6103 dual-core machines) and other potential thread-safety issues. 6104 [Bodo Moeller] 6105 6106 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key 6107 versions), which is now available for royalty-free use 6108 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html). 6109 Also, add Camellia TLS ciphersuites from RFC 4132. 6110 6111 To minimize changes between patchlevels in the OpenSSL 0.9.8 6112 series, Camellia remains excluded from compilation unless OpenSSL 6113 is configured with 'enable-camellia'. 6114 [NTT] 6115 6116 *) Disable the padding bug check when compression is in use. The padding 6117 bug check assumes the first packet is of even length, this is not 6118 necessarily true if compression is enabled and can result in false 6119 positives causing handshake failure. The actual bug test is ancient 6120 code so it is hoped that implementations will either have fixed it by 6121 now or any which still have the bug do not support compression. 6122 [Steve Henson] 6123 6124 Changes between 0.9.8a and 0.9.8b [04 May 2006] 6125 6126 *) When applying a cipher rule check to see if string match is an explicit 6127 cipher suite and only match that one cipher suite if it is. 6128 [Steve Henson] 6129 6130 *) Link in manifests for VC++ if needed. 6131 [Austin Ziegler <halostatue@gmail.com>] 6132 6133 *) Update support for ECC-based TLS ciphersuites according to 6134 draft-ietf-tls-ecc-12.txt with proposed changes (but without 6135 TLS extensions, which are supported starting with the 0.9.9 6136 branch, not in the OpenSSL 0.9.8 branch). 6137 [Douglas Stebila] 6138 6139 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support 6140 opaque EVP_CIPHER_CTX handling. 6141 [Steve Henson] 6142 6143 *) Fixes and enhancements to zlib compression code. We now only use 6144 "zlib1.dll" and use the default __cdecl calling convention on Win32 6145 to conform with the standards mentioned here: 6146 http://www.zlib.net/DLL_FAQ.txt 6147 Static zlib linking now works on Windows and the new --with-zlib-include 6148 --with-zlib-lib options to Configure can be used to supply the location 6149 of the headers and library. Gracefully handle case where zlib library 6150 can't be loaded. 6151 [Steve Henson] 6152 6153 *) Several fixes and enhancements to the OID generation code. The old code 6154 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't 6155 handle numbers larger than ULONG_MAX, truncated printing and had a 6156 non standard OBJ_obj2txt() behaviour. 6157 [Steve Henson] 6158 6159 *) Add support for building of engines under engine/ as shared libraries 6160 under VC++ build system. 6161 [Steve Henson] 6162 6163 *) Corrected the numerous bugs in the Win32 path splitter in DSO. 6164 Hopefully, we will not see any false combination of paths any more. 6165 [Richard Levitte] 6166 6167 Changes between 0.9.8 and 0.9.8a [11 Oct 2005] 6168 6169 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 6170 (part of SSL_OP_ALL). This option used to disable the 6171 countermeasure against man-in-the-middle protocol-version 6172 rollback in the SSL 2.0 server implementation, which is a bad 6173 idea. (CVE-2005-2969) 6174 6175 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 6176 for Information Security, National Institute of Advanced Industrial 6177 Science and Technology [AIST], Japan)] 6178 6179 *) Add two function to clear and return the verify parameter flags. 6180 [Steve Henson] 6181 6182 *) Keep cipherlists sorted in the source instead of sorting them at 6183 runtime, thus removing the need for a lock. 6184 [Nils Larsch] 6185 6186 *) Avoid some small subgroup attacks in Diffie-Hellman. 6187 [Nick Mathewson and Ben Laurie] 6188 6189 *) Add functions for well-known primes. 6190 [Nick Mathewson] 6191 6192 *) Extended Windows CE support. 6193 [Satoshi Nakamura and Andy Polyakov] 6194 6195 *) Initialize SSL_METHOD structures at compile time instead of during 6196 runtime, thus removing the need for a lock. 6197 [Steve Henson] 6198 6199 *) Make PKCS7_decrypt() work even if no certificate is supplied by 6200 attempting to decrypt each encrypted key in turn. Add support to 6201 smime utility. 6202 [Steve Henson] 6203 6204 Changes between 0.9.7h and 0.9.8 [05 Jul 2005] 6205 6206 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after 6207 OpenSSL 0.9.8.] 6208 6209 *) Add libcrypto.pc and libssl.pc for those who feel they need them. 6210 [Richard Levitte] 6211 6212 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private 6213 key into the same file any more. 6214 [Richard Levitte] 6215 6216 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors. 6217 [Andy Polyakov] 6218 6219 *) Add -utf8 command line and config file option to 'ca'. 6220 [Stefan <stf@udoma.org] 6221 6222 *) Removed the macro des_crypt(), as it seems to conflict with some 6223 libraries. Use DES_crypt(). 6224 [Richard Levitte] 6225 6226 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This 6227 involves renaming the source and generated shared-libs for 6228 both. The engines will accept the corrected or legacy ids 6229 ('ncipher' and '4758_cca' respectively) when binding. NB, 6230 this only applies when building 'shared'. 6231 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe] 6232 6233 *) Add attribute functions to EVP_PKEY structure. Modify 6234 PKCS12_create() to recognize a CSP name attribute and 6235 use it. Make -CSP option work again in pkcs12 utility. 6236 [Steve Henson] 6237 6238 *) Add new functionality to the bn blinding code: 6239 - automatic re-creation of the BN_BLINDING parameters after 6240 a fixed number of uses (currently 32) 6241 - add new function for parameter creation 6242 - introduce flags to control the update behaviour of the 6243 BN_BLINDING parameters 6244 - hide BN_BLINDING structure 6245 Add a second BN_BLINDING slot to the RSA structure to improve 6246 performance when a single RSA object is shared among several 6247 threads. 6248 [Nils Larsch] 6249 6250 *) Add support for DTLS. 6251 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie] 6252 6253 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1) 6254 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file() 6255 [Walter Goulet] 6256 6257 *) Remove buggy and incomplete DH cert support from 6258 ssl/ssl_rsa.c and ssl/s3_both.c 6259 [Nils Larsch] 6260 6261 *) Use SHA-1 instead of MD5 as the default digest algorithm for 6262 the apps/openssl applications. 6263 [Nils Larsch] 6264 6265 *) Compile clean with "-Wall -Wmissing-prototypes 6266 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently 6267 DEBUG_SAFESTACK must also be set. 6268 [Ben Laurie] 6269 6270 *) Change ./Configure so that certain algorithms can be disabled by default. 6271 The new counterpiece to "no-xxx" is "enable-xxx". 6272 6273 The patented RC5 and MDC2 algorithms will now be disabled unless 6274 "enable-rc5" and "enable-mdc2", respectively, are specified. 6275 6276 (IDEA remains enabled despite being patented. This is because IDEA 6277 is frequently required for interoperability, and there is no license 6278 fee for non-commercial use. As before, "no-idea" can be used to 6279 avoid this algorithm.) 6280 6281 [Bodo Moeller] 6282 6283 *) Add processing of proxy certificates (see RFC 3820). This work was 6284 sponsored by KTH (The Royal Institute of Technology in Stockholm) and 6285 EGEE (Enabling Grids for E-science in Europe). 6286 [Richard Levitte] 6287 6288 *) RC4 performance overhaul on modern architectures/implementations, such 6289 as Intel P4, IA-64 and AMD64. 6290 [Andy Polyakov] 6291 6292 *) New utility extract-section.pl. This can be used specify an alternative 6293 section number in a pod file instead of having to treat each file as 6294 a separate case in Makefile. This can be done by adding two lines to the 6295 pod file: 6296 6297 =for comment openssl_section:XXX 6298 6299 The blank line is mandatory. 6300 6301 [Steve Henson] 6302 6303 *) New arguments -certform, -keyform and -pass for s_client and s_server 6304 to allow alternative format key and certificate files and passphrase 6305 sources. 6306 [Steve Henson] 6307 6308 *) New structure X509_VERIFY_PARAM which combines current verify parameters, 6309 update associated structures and add various utility functions. 6310 6311 Add new policy related verify parameters, include policy checking in 6312 standard verify code. Enhance 'smime' application with extra parameters 6313 to support policy checking and print out. 6314 [Steve Henson] 6315 6316 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3 6317 Nehemiah processors. These extensions support AES encryption in hardware 6318 as well as RNG (though RNG support is currently disabled). 6319 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov] 6320 6321 *) Deprecate BN_[get|set]_params() functions (they were ignored internally). 6322 [Geoff Thorpe] 6323 6324 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented. 6325 [Andy Polyakov and a number of other people] 6326 6327 *) Improved PowerPC platform support. Most notably BIGNUM assembler 6328 implementation contributed by IBM. 6329 [Suresh Chari, Peter Waltenberg, Andy Polyakov] 6330 6331 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public 6332 exponent rather than 'unsigned long'. There is a corresponding change to 6333 the new 'rsa_keygen' element of the RSA_METHOD structure. 6334 [Jelte Jansen, Geoff Thorpe] 6335 6336 *) Functionality for creating the initial serial number file is now 6337 moved from CA.pl to the 'ca' utility with a new option -create_serial. 6338 6339 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial 6340 number file to 1, which is bound to cause problems. To avoid 6341 the problems while respecting compatibility between different 0.9.7 6342 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in 6343 CA.pl for serial number initialization. With the new release 0.9.8, 6344 we can fix the problem directly in the 'ca' utility.) 6345 [Steve Henson] 6346 6347 *) Reduced header interdependencies by declaring more opaque objects in 6348 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will 6349 give fewer recursive includes, which could break lazy source code - so 6350 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always, 6351 developers should define this symbol when building and using openssl to 6352 ensure they track the recommended behaviour, interfaces, [etc], but 6353 backwards-compatible behaviour prevails when this isn't defined. 6354 [Geoff Thorpe] 6355 6356 *) New function X509_POLICY_NODE_print() which prints out policy nodes. 6357 [Steve Henson] 6358 6359 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality. 6360 This will generate a random key of the appropriate length based on the 6361 cipher context. The EVP_CIPHER can provide its own random key generation 6362 routine to support keys of a specific form. This is used in the des and 6363 3des routines to generate a key of the correct parity. Update S/MIME 6364 code to use new functions and hence generate correct parity DES keys. 6365 Add EVP_CHECK_DES_KEY #define to return an error if the key is not 6366 valid (weak or incorrect parity). 6367 [Steve Henson] 6368 6369 *) Add a local set of CRLs that can be used by X509_verify_cert() as well 6370 as looking them up. This is useful when the verified structure may contain 6371 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs 6372 present unless the new PKCS7_NO_CRL flag is asserted. 6373 [Steve Henson] 6374 6375 *) Extend ASN1 oid configuration module. It now additionally accepts the 6376 syntax: 6377 6378 shortName = some long name, 1.2.3.4 6379 [Steve Henson] 6380 6381 *) Reimplemented the BN_CTX implementation. There is now no more static 6382 limitation on the number of variables it can handle nor the depth of the 6383 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack 6384 information can now expand as required, and rather than having a single 6385 static array of bignums, BN_CTX now uses a linked-list of such arrays 6386 allowing it to expand on demand whilst maintaining the usefulness of 6387 BN_CTX's "bundling". 6388 [Geoff Thorpe] 6389 6390 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD 6391 to allow all RSA operations to function using a single BN_CTX. 6392 [Geoff Thorpe] 6393 6394 *) Preliminary support for certificate policy evaluation and checking. This 6395 is initially intended to pass the tests outlined in "Conformance Testing 6396 of Relying Party Client Certificate Path Processing Logic" v1.07. 6397 [Steve Henson] 6398 6399 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and 6400 remained unused and not that useful. A variety of other little bignum 6401 tweaks and fixes have also been made continuing on from the audit (see 6402 below). 6403 [Geoff Thorpe] 6404 6405 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with 6406 associated ASN1, EVP and SSL functions and old ASN1 macros. 6407 [Richard Levitte] 6408 6409 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results, 6410 and this should never fail. So the return value from the use of 6411 BN_set_word() (which can fail due to needless expansion) is now deprecated; 6412 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro. 6413 [Geoff Thorpe] 6414 6415 *) BN_CTX_get() should return zero-valued bignums, providing the same 6416 initialised value as BN_new(). 6417 [Geoff Thorpe, suggested by Ulf Möller] 6418 6419 *) Support for inhibitAnyPolicy certificate extension. 6420 [Steve Henson] 6421 6422 *) An audit of the BIGNUM code is underway, for which debugging code is 6423 enabled when BN_DEBUG is defined. This makes stricter enforcements on what 6424 is considered valid when processing BIGNUMs, and causes execution to 6425 assert() when a problem is discovered. If BN_DEBUG_RAND is defined, 6426 further steps are taken to deliberately pollute unused data in BIGNUM 6427 structures to try and expose faulty code further on. For now, openssl will 6428 (in its default mode of operation) continue to tolerate the inconsistent 6429 forms that it has tolerated in the past, but authors and packagers should 6430 consider trying openssl and their own applications when compiled with 6431 these debugging symbols defined. It will help highlight potential bugs in 6432 their own code, and will improve the test coverage for OpenSSL itself. At 6433 some point, these tighter rules will become openssl's default to improve 6434 maintainability, though the assert()s and other overheads will remain only 6435 in debugging configurations. See bn.h for more details. 6436 [Geoff Thorpe, Nils Larsch, Ulf Möller] 6437 6438 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure 6439 that can only be obtained through BN_CTX_new() (which implicitly 6440 initialises it). The presence of this function only made it possible 6441 to overwrite an existing structure (and cause memory leaks). 6442 [Geoff Thorpe] 6443 6444 *) Because of the callback-based approach for implementing LHASH as a 6445 template type, lh_insert() adds opaque objects to hash-tables and 6446 lh_doall() or lh_doall_arg() are typically used with a destructor callback 6447 to clean up those corresponding objects before destroying the hash table 6448 (and losing the object pointers). So some over-zealous constifications in 6449 LHASH have been relaxed so that lh_insert() does not take (nor store) the 6450 objects as "const" and the lh_doall[_arg] callback wrappers are not 6451 prototyped to have "const" restrictions on the object pointers they are 6452 given (and so aren't required to cast them away any more). 6453 [Geoff Thorpe] 6454 6455 *) The tmdiff.h API was so ugly and minimal that our own timing utility 6456 (speed) prefers to use its own implementation. The two implementations 6457 haven't been consolidated as yet (volunteers?) but the tmdiff API has had 6458 its object type properly exposed (MS_TM) instead of casting to/from "char 6459 *". This may still change yet if someone realises MS_TM and "ms_time_***" 6460 aren't necessarily the greatest nomenclatures - but this is what was used 6461 internally to the implementation so I've used that for now. 6462 [Geoff Thorpe] 6463 6464 *) Ensure that deprecated functions do not get compiled when 6465 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of 6466 the self-tests were still using deprecated key-generation functions so 6467 these have been updated also. 6468 [Geoff Thorpe] 6469 6470 *) Reorganise PKCS#7 code to separate the digest location functionality 6471 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest(). 6472 New function PKCS7_set_digest() to set the digest type for PKCS#7 6473 digestedData type. Add additional code to correctly generate the 6474 digestedData type and add support for this type in PKCS7 initialization 6475 functions. 6476 [Steve Henson] 6477 6478 *) New function PKCS7_set0_type_other() this initializes a PKCS7 6479 structure of type "other". 6480 [Steve Henson] 6481 6482 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making 6483 sure the loop does correctly stop and breaking ("division by zero") 6484 modulus operations are not performed. The (pre-generated) prime 6485 table crypto/bn/bn_prime.h was already correct, but it could not be 6486 re-generated on some platforms because of the "division by zero" 6487 situation in the script. 6488 [Ralf S. Engelschall] 6489 6490 *) Update support for ECC-based TLS ciphersuites according to 6491 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with 6492 SHA-1 now is only used for "small" curves (where the 6493 representation of a field element takes up to 24 bytes); for 6494 larger curves, the field element resulting from ECDH is directly 6495 used as premaster secret. 6496 [Douglas Stebila (Sun Microsystems Laboratories)] 6497 6498 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2 6499 curve secp160r1 to the tests. 6500 [Douglas Stebila (Sun Microsystems Laboratories)] 6501 6502 *) Add the possibility to load symbols globally with DSO. 6503 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte] 6504 6505 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better 6506 control of the error stack. 6507 [Richard Levitte] 6508 6509 *) Add support for STORE in ENGINE. 6510 [Richard Levitte] 6511 6512 *) Add the STORE type. The intention is to provide a common interface 6513 to certificate and key stores, be they simple file-based stores, or 6514 HSM-type store, or LDAP stores, or... 6515 NOTE: The code is currently UNTESTED and isn't really used anywhere. 6516 [Richard Levitte] 6517 6518 *) Add a generic structure called OPENSSL_ITEM. This can be used to 6519 pass a list of arguments to any function as well as provide a way 6520 for a function to pass data back to the caller. 6521 [Richard Levitte] 6522 6523 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup() 6524 works like BUF_strdup() but can be used to duplicate a portion of 6525 a string. The copy gets NUL-terminated. BUF_memdup() duplicates 6526 a memory area. 6527 [Richard Levitte] 6528 6529 *) Add the function sk_find_ex() which works like sk_find(), but will 6530 return an index to an element even if an exact match couldn't be 6531 found. The index is guaranteed to point at the element where the 6532 searched-for key would be inserted to preserve sorting order. 6533 [Richard Levitte] 6534 6535 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but 6536 takes an extra flags argument for optional functionality. Currently, 6537 the following flags are defined: 6538 6539 OBJ_BSEARCH_VALUE_ON_NOMATCH 6540 This one gets OBJ_bsearch_ex() to return a pointer to the first 6541 element where the comparing function returns a negative or zero 6542 number. 6543 6544 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH 6545 This one gets OBJ_bsearch_ex() to return a pointer to the first 6546 element where the comparing function returns zero. This is useful 6547 if there are more than one element where the comparing function 6548 returns zero. 6549 [Richard Levitte] 6550 6551 *) Make it possible to create self-signed certificates with 'openssl ca' 6552 in such a way that the self-signed certificate becomes part of the 6553 CA database and uses the same mechanisms for serial number generation 6554 as all other certificate signing. The new flag '-selfsign' enables 6555 this functionality. Adapt CA.sh and CA.pl.in. 6556 [Richard Levitte] 6557 6558 *) Add functionality to check the public key of a certificate request 6559 against a given private. This is useful to check that a certificate 6560 request can be signed by that key (self-signing). 6561 [Richard Levitte] 6562 6563 *) Make it possible to have multiple active certificates with the same 6564 subject in the CA index file. This is done only if the keyword 6565 'unique_subject' is set to 'no' in the main CA section (default 6566 if 'CA_default') of the configuration file. The value is saved 6567 with the database itself in a separate index attribute file, 6568 named like the index file with '.attr' appended to the name. 6569 [Richard Levitte] 6570 6571 *) Generate multi-valued AVAs using '+' notation in config files for 6572 req and dirName. 6573 [Steve Henson] 6574 6575 *) Support for nameConstraints certificate extension. 6576 [Steve Henson] 6577 6578 *) Support for policyConstraints certificate extension. 6579 [Steve Henson] 6580 6581 *) Support for policyMappings certificate extension. 6582 [Steve Henson] 6583 6584 *) Make sure the default DSA_METHOD implementation only uses its 6585 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL, 6586 and change its own handlers to be NULL so as to remove unnecessary 6587 indirection. This lets alternative implementations fallback to the 6588 default implementation more easily. 6589 [Geoff Thorpe] 6590 6591 *) Support for directoryName in GeneralName related extensions 6592 in config files. 6593 [Steve Henson] 6594 6595 *) Make it possible to link applications using Makefile.shared. 6596 Make that possible even when linking against static libraries! 6597 [Richard Levitte] 6598 6599 *) Support for single pass processing for S/MIME signing. This now 6600 means that S/MIME signing can be done from a pipe, in addition 6601 cleartext signing (multipart/signed type) is effectively streaming 6602 and the signed data does not need to be all held in memory. 6603 6604 This is done with a new flag PKCS7_STREAM. When this flag is set 6605 PKCS7_sign() only initializes the PKCS7 structure and the actual signing 6606 is done after the data is output (and digests calculated) in 6607 SMIME_write_PKCS7(). 6608 [Steve Henson] 6609 6610 *) Add full support for -rpath/-R, both in shared libraries and 6611 applications, at least on the platforms where it's known how 6612 to do it. 6613 [Richard Levitte] 6614 6615 *) In crypto/ec/ec_mult.c, implement fast point multiplication with 6616 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult() 6617 will now compute a table of multiples of the generator that 6618 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul() 6619 faster (notably in the case of a single point multiplication, 6620 scalar * generator). 6621 [Nils Larsch, Bodo Moeller] 6622 6623 *) IPv6 support for certificate extensions. The various extensions 6624 which use the IP:a.b.c.d can now take IPv6 addresses using the 6625 formats of RFC1884 2.2 . IPv6 addresses are now also displayed 6626 correctly. 6627 [Steve Henson] 6628 6629 *) Added an ENGINE that implements RSA by performing private key 6630 exponentiations with the GMP library. The conversions to and from 6631 GMP's mpz_t format aren't optimised nor are any montgomery forms 6632 cached, and on x86 it appears OpenSSL's own performance has caught up. 6633 However there are likely to be other architectures where GMP could 6634 provide a boost. This ENGINE is not built in by default, but it can be 6635 specified at Configure time and should be accompanied by the necessary 6636 linker additions, eg; 6637 ./config -DOPENSSL_USE_GMP -lgmp 6638 [Geoff Thorpe] 6639 6640 *) "openssl engine" will not display ENGINE/DSO load failure errors when 6641 testing availability of engines with "-t" - the old behaviour is 6642 produced by increasing the feature's verbosity with "-tt". 6643 [Geoff Thorpe] 6644 6645 *) ECDSA routines: under certain error conditions uninitialized BN objects 6646 could be freed. Solution: make sure initialization is performed early 6647 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de> 6648 via PR#459) 6649 [Lutz Jaenicke] 6650 6651 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD 6652 and DH_METHOD (eg. by ENGINE implementations) to override the normal 6653 software implementations. For DSA and DH, parameter generation can 6654 also be overridden by providing the appropriate method callbacks. 6655 [Geoff Thorpe] 6656 6657 *) Change the "progress" mechanism used in key-generation and 6658 primality testing to functions that take a new BN_GENCB pointer in 6659 place of callback/argument pairs. The new API functions have "_ex" 6660 postfixes and the older functions are reimplemented as wrappers for 6661 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide 6662 declarations of the old functions to help (graceful) attempts to 6663 migrate to the new functions. Also, the new key-generation API 6664 functions operate on a caller-supplied key-structure and return 6665 success/failure rather than returning a key or NULL - this is to 6666 help make "keygen" another member function of RSA_METHOD etc. 6667 6668 Example for using the new callback interface: 6669 6670 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...; 6671 void *my_arg = ...; 6672 BN_GENCB my_cb; 6673 6674 BN_GENCB_set(&my_cb, my_callback, my_arg); 6675 6676 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb); 6677 /* For the meaning of a, b in calls to my_callback(), see the 6678 * documentation of the function that calls the callback. 6679 * cb will point to my_cb; my_arg can be retrieved as cb->arg. 6680 * my_callback should return 1 if it wants BN_is_prime_ex() 6681 * to continue, or 0 to stop. 6682 */ 6683 6684 [Geoff Thorpe] 6685 6686 *) Change the ZLIB compression method to be stateful, and make it 6687 available to TLS with the number defined in 6688 draft-ietf-tls-compression-04.txt. 6689 [Richard Levitte] 6690 6691 *) Add the ASN.1 structures and functions for CertificatePair, which 6692 is defined as follows (according to X.509_4thEditionDraftV6.pdf): 6693 6694 CertificatePair ::= SEQUENCE { 6695 forward [0] Certificate OPTIONAL, 6696 reverse [1] Certificate OPTIONAL, 6697 -- at least one of the pair shall be present -- } 6698 6699 Also implement the PEM functions to read and write certificate 6700 pairs, and defined the PEM tag as "CERTIFICATE PAIR". 6701 6702 This needed to be defined, mostly for the sake of the LDAP 6703 attribute crossCertificatePair, but may prove useful elsewhere as 6704 well. 6705 [Richard Levitte] 6706 6707 *) Make it possible to inhibit symlinking of shared libraries in 6708 Makefile.shared, for Cygwin's sake. 6709 [Richard Levitte] 6710 6711 *) Extend the BIGNUM API by creating a function 6712 void BN_set_negative(BIGNUM *a, int neg); 6713 and a macro that behave like 6714 int BN_is_negative(const BIGNUM *a); 6715 6716 to avoid the need to access 'a->neg' directly in applications. 6717 [Nils Larsch] 6718 6719 *) Implement fast modular reduction for pseudo-Mersenne primes 6720 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c). 6721 EC_GROUP_new_curve_GFp() will now automatically use this 6722 if applicable. 6723 [Nils Larsch <nla@trustcenter.de>] 6724 6725 *) Add new lock type (CRYPTO_LOCK_BN). 6726 [Bodo Moeller] 6727 6728 *) Change the ENGINE framework to automatically load engines 6729 dynamically from specific directories unless they could be 6730 found to already be built in or loaded. Move all the 6731 current engines except for the cryptodev one to a new 6732 directory engines/. 6733 The engines in engines/ are built as shared libraries if 6734 the "shared" options was given to ./Configure or ./config. 6735 Otherwise, they are inserted in libcrypto.a. 6736 /usr/local/ssl/engines is the default directory for dynamic 6737 engines, but that can be overridden at configure time through 6738 the usual use of --prefix and/or --openssldir, and at run 6739 time with the environment variable OPENSSL_ENGINES. 6740 [Geoff Thorpe and Richard Levitte] 6741 6742 *) Add Makefile.shared, a helper makefile to build shared 6743 libraries. Adapt Makefile.org. 6744 [Richard Levitte] 6745 6746 *) Add version info to Win32 DLLs. 6747 [Peter 'Luna' Runestig" <peter@runestig.com>] 6748 6749 *) Add new 'medium level' PKCS#12 API. Certificates and keys 6750 can be added using this API to created arbitrary PKCS#12 6751 files while avoiding the low level API. 6752 6753 New options to PKCS12_create(), key or cert can be NULL and 6754 will then be omitted from the output file. The encryption 6755 algorithm NIDs can be set to -1 for no encryption, the mac 6756 iteration count can be set to 0 to omit the mac. 6757 6758 Enhance pkcs12 utility by making the -nokeys and -nocerts 6759 options work when creating a PKCS#12 file. New option -nomac 6760 to omit the mac, NONE can be set for an encryption algorithm. 6761 New code is modified to use the enhanced PKCS12_create() 6762 instead of the low level API. 6763 [Steve Henson] 6764 6765 *) Extend ASN1 encoder to support indefinite length constructed 6766 encoding. This can output sequences tags and octet strings in 6767 this form. Modify pk7_asn1.c to support indefinite length 6768 encoding. This is experimental and needs additional code to 6769 be useful, such as an ASN1 bio and some enhanced streaming 6770 PKCS#7 code. 6771 6772 Extend template encode functionality so that tagging is passed 6773 down to the template encoder. 6774 [Steve Henson] 6775 6776 *) Let 'openssl req' fail if an argument to '-newkey' is not 6777 recognized instead of using RSA as a default. 6778 [Bodo Moeller] 6779 6780 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt. 6781 As these are not official, they are not included in "ALL"; 6782 the "ECCdraft" ciphersuite group alias can be used to select them. 6783 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)] 6784 6785 *) Add ECDH engine support. 6786 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)] 6787 6788 *) Add ECDH in new directory crypto/ecdh/. 6789 [Douglas Stebila (Sun Microsystems Laboratories)] 6790 6791 *) Let BN_rand_range() abort with an error after 100 iterations 6792 without success (which indicates a broken PRNG). 6793 [Bodo Moeller] 6794 6795 *) Change BN_mod_sqrt() so that it verifies that the input value 6796 is really the square of the return value. (Previously, 6797 BN_mod_sqrt would show GIGO behaviour.) 6798 [Bodo Moeller] 6799 6800 *) Add named elliptic curves over binary fields from X9.62, SECG, 6801 and WAP/WTLS; add OIDs that were still missing. 6802 6803 [Sheueling Chang Shantz and Douglas Stebila 6804 (Sun Microsystems Laboratories)] 6805 6806 *) Extend the EC library for elliptic curves over binary fields 6807 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/). 6808 New EC_METHOD: 6809 6810 EC_GF2m_simple_method 6811 6812 New API functions: 6813 6814 EC_GROUP_new_curve_GF2m 6815 EC_GROUP_set_curve_GF2m 6816 EC_GROUP_get_curve_GF2m 6817 EC_POINT_set_affine_coordinates_GF2m 6818 EC_POINT_get_affine_coordinates_GF2m 6819 EC_POINT_set_compressed_coordinates_GF2m 6820 6821 Point compression for binary fields is disabled by default for 6822 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to 6823 enable it). 6824 6825 As binary polynomials are represented as BIGNUMs, various members 6826 of the EC_GROUP and EC_POINT data structures can be shared 6827 between the implementations for prime fields and binary fields; 6828 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m) 6829 are essentially identical to their ..._GFp counterparts. 6830 (For simplicity, the '..._GFp' prefix has been dropped from 6831 various internal method names.) 6832 6833 An internal 'field_div' method (similar to 'field_mul' and 6834 'field_sqr') has been added; this is used only for binary fields. 6835 6836 [Sheueling Chang Shantz and Douglas Stebila 6837 (Sun Microsystems Laboratories)] 6838 6839 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult() 6840 through methods ('mul', 'precompute_mult'). 6841 6842 The generic implementations (now internally called 'ec_wNAF_mul' 6843 and 'ec_wNAF_precomputed_mult') remain the default if these 6844 methods are undefined. 6845 6846 [Sheueling Chang Shantz and Douglas Stebila 6847 (Sun Microsystems Laboratories)] 6848 6849 *) New function EC_GROUP_get_degree, which is defined through 6850 EC_METHOD. For curves over prime fields, this returns the bit 6851 length of the modulus. 6852 6853 [Sheueling Chang Shantz and Douglas Stebila 6854 (Sun Microsystems Laboratories)] 6855 6856 *) New functions EC_GROUP_dup, EC_POINT_dup. 6857 (These simply call ..._new and ..._copy). 6858 6859 [Sheueling Chang Shantz and Douglas Stebila 6860 (Sun Microsystems Laboratories)] 6861 6862 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c. 6863 Polynomials are represented as BIGNUMs (where the sign bit is not 6864 used) in the following functions [macros]: 6865 6866 BN_GF2m_add 6867 BN_GF2m_sub [= BN_GF2m_add] 6868 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr] 6869 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr] 6870 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr] 6871 BN_GF2m_mod_inv 6872 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr] 6873 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr] 6874 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr] 6875 BN_GF2m_cmp [= BN_ucmp] 6876 6877 (Note that only the 'mod' functions are actually for fields GF(2^m). 6878 BN_GF2m_add() is misnomer, but this is for the sake of consistency.) 6879 6880 For some functions, an the irreducible polynomial defining a 6881 field can be given as an 'unsigned int[]' with strictly 6882 decreasing elements giving the indices of those bits that are set; 6883 i.e., p[] represents the polynomial 6884 f(t) = t^p[0] + t^p[1] + ... + t^p[k] 6885 where 6886 p[0] > p[1] > ... > p[k] = 0. 6887 This applies to the following functions: 6888 6889 BN_GF2m_mod_arr 6890 BN_GF2m_mod_mul_arr 6891 BN_GF2m_mod_sqr_arr 6892 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv] 6893 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div] 6894 BN_GF2m_mod_exp_arr 6895 BN_GF2m_mod_sqrt_arr 6896 BN_GF2m_mod_solve_quad_arr 6897 BN_GF2m_poly2arr 6898 BN_GF2m_arr2poly 6899 6900 Conversion can be performed by the following functions: 6901 6902 BN_GF2m_poly2arr 6903 BN_GF2m_arr2poly 6904 6905 bntest.c has additional tests for binary polynomial arithmetic. 6906 6907 Two implementations for BN_GF2m_mod_div() are available. 6908 The default algorithm simply uses BN_GF2m_mod_inv() and 6909 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only 6910 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the 6911 copyright notice in crypto/bn/bn_gf2m.c before enabling it). 6912 6913 [Sheueling Chang Shantz and Douglas Stebila 6914 (Sun Microsystems Laboratories)] 6915 6916 *) Add new error code 'ERR_R_DISABLED' that can be used when some 6917 functionality is disabled at compile-time. 6918 [Douglas Stebila <douglas.stebila@sun.com>] 6919 6920 *) Change default behaviour of 'openssl asn1parse' so that more 6921 information is visible when viewing, e.g., a certificate: 6922 6923 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump' 6924 mode the content of non-printable OCTET STRINGs is output in a 6925 style similar to INTEGERs, but with '[HEX DUMP]' prepended to 6926 avoid the appearance of a printable string. 6927 [Nils Larsch <nla@trustcenter.de>] 6928 6929 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access 6930 functions 6931 EC_GROUP_set_asn1_flag() 6932 EC_GROUP_get_asn1_flag() 6933 EC_GROUP_set_point_conversion_form() 6934 EC_GROUP_get_point_conversion_form() 6935 These control ASN1 encoding details: 6936 - Curves (i.e., groups) are encoded explicitly unless asn1_flag 6937 has been set to OPENSSL_EC_NAMED_CURVE. 6938 - Points are encoded in uncompressed form by default; options for 6939 asn1_for are as for point2oct, namely 6940 POINT_CONVERSION_COMPRESSED 6941 POINT_CONVERSION_UNCOMPRESSED 6942 POINT_CONVERSION_HYBRID 6943 6944 Also add 'seed' and 'seed_len' members to EC_GROUP with access 6945 functions 6946 EC_GROUP_set_seed() 6947 EC_GROUP_get0_seed() 6948 EC_GROUP_get_seed_len() 6949 This is used only for ASN1 purposes (so far). 6950 [Nils Larsch <nla@trustcenter.de>] 6951 6952 *) Add 'field_type' member to EC_METHOD, which holds the NID 6953 of the appropriate field type OID. The new function 6954 EC_METHOD_get_field_type() returns this value. 6955 [Nils Larsch <nla@trustcenter.de>] 6956 6957 *) Add functions 6958 EC_POINT_point2bn() 6959 EC_POINT_bn2point() 6960 EC_POINT_point2hex() 6961 EC_POINT_hex2point() 6962 providing useful interfaces to EC_POINT_point2oct() and 6963 EC_POINT_oct2point(). 6964 [Nils Larsch <nla@trustcenter.de>] 6965 6966 *) Change internals of the EC library so that the functions 6967 EC_GROUP_set_generator() 6968 EC_GROUP_get_generator() 6969 EC_GROUP_get_order() 6970 EC_GROUP_get_cofactor() 6971 are implemented directly in crypto/ec/ec_lib.c and not dispatched 6972 to methods, which would lead to unnecessary code duplication when 6973 adding different types of curves. 6974 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller] 6975 6976 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM 6977 arithmetic, and such that modified wNAFs are generated 6978 (which avoid length expansion in many cases). 6979 [Bodo Moeller] 6980 6981 *) Add a function EC_GROUP_check_discriminant() (defined via 6982 EC_METHOD) that verifies that the curve discriminant is non-zero. 6983 6984 Add a function EC_GROUP_check() that makes some sanity tests 6985 on a EC_GROUP, its generator and order. This includes 6986 EC_GROUP_check_discriminant(). 6987 [Nils Larsch <nla@trustcenter.de>] 6988 6989 *) Add ECDSA in new directory crypto/ecdsa/. 6990 6991 Add applications 'openssl ecparam' and 'openssl ecdsa' 6992 (these are based on 'openssl dsaparam' and 'openssl dsa'). 6993 6994 ECDSA support is also included in various other files across the 6995 library. Most notably, 6996 - 'openssl req' now has a '-newkey ecdsa:file' option; 6997 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA; 6998 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and 6999 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make 7000 them suitable for ECDSA where domain parameters must be 7001 extracted before the specific public key; 7002 - ECDSA engine support has been added. 7003 [Nils Larsch <nla@trustcenter.de>] 7004 7005 *) Include some named elliptic curves, and add OIDs from X9.62, 7006 SECG, and WAP/WTLS. Each curve can be obtained from the new 7007 function 7008 EC_GROUP_new_by_curve_name(), 7009 and the list of available named curves can be obtained with 7010 EC_get_builtin_curves(). 7011 Also add a 'curve_name' member to EC_GROUP objects, which can be 7012 accessed via 7013 EC_GROUP_set_curve_name() 7014 EC_GROUP_get_curve_name() 7015 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller] 7016 7017 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 7018 was actually never needed) and in BN_mul(). The removal in BN_mul() 7019 required a small change in bn_mul_part_recursive() and the addition 7020 of the functions bn_cmp_part_words(), bn_sub_part_words() and 7021 bn_add_part_words(), which do the same thing as bn_cmp_words(), 7022 bn_sub_words() and bn_add_words() except they take arrays with 7023 differing sizes. 7024 [Richard Levitte] 7025 7026 Changes between 0.9.7l and 0.9.7m [23 Feb 2007] 7027 7028 *) Cleanse PEM buffers before freeing them since they may contain 7029 sensitive data. 7030 [Benjamin Bennett <ben@psc.edu>] 7031 7032 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 7033 a ciphersuite string such as "DEFAULT:RSA" cannot enable 7034 authentication-only ciphersuites. 7035 [Bodo Moeller] 7036 7037 *) Since AES128 and AES256 share a single mask bit in the logic of 7038 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 7039 kludge to work properly if AES128 is available and AES256 isn't. 7040 [Victor Duchovni] 7041 7042 *) Expand security boundary to match 1.1.1 module. 7043 [Steve Henson] 7044 7045 *) Remove redundant features: hash file source, editing of test vectors 7046 modify fipsld to use external fips_premain.c signature. 7047 [Steve Henson] 7048 7049 *) New perl script mkfipsscr.pl to create shell scripts or batch files to 7050 run algorithm test programs. 7051 [Steve Henson] 7052 7053 *) Make algorithm test programs more tolerant of whitespace. 7054 [Steve Henson] 7055 7056 *) Have SSL/TLS server implementation tolerate "mismatched" record 7057 protocol version while receiving ClientHello even if the 7058 ClientHello is fragmented. (The server can't insist on the 7059 particular protocol version it has chosen before the ServerHello 7060 message has informed the client about his choice.) 7061 [Bodo Moeller] 7062 7063 *) Load error codes if they are not already present instead of using a 7064 static variable. This allows them to be cleanly unloaded and reloaded. 7065 [Steve Henson] 7066 7067 Changes between 0.9.7k and 0.9.7l [28 Sep 2006] 7068 7069 *) Introduce limits to prevent malicious keys being able to 7070 cause a denial of service. (CVE-2006-2940) 7071 [Steve Henson, Bodo Moeller] 7072 7073 *) Fix ASN.1 parsing of certain invalid structures that can result 7074 in a denial of service. (CVE-2006-2937) [Steve Henson] 7075 7076 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 7077 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 7078 7079 *) Fix SSL client code which could crash if connecting to a 7080 malicious SSLv2 server. (CVE-2006-4343) 7081 [Tavis Ormandy and Will Drewry, Google Security Team] 7082 7083 *) Change ciphersuite string processing so that an explicit 7084 ciphersuite selects this one ciphersuite (so that "AES256-SHA" 7085 will no longer include "AES128-SHA"), and any other similar 7086 ciphersuite (same bitmap) from *other* protocol versions (so that 7087 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the 7088 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining 7089 changes from 0.9.8b and 0.9.8d. 7090 [Bodo Moeller] 7091 7092 Changes between 0.9.7j and 0.9.7k [05 Sep 2006] 7093 7094 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 7095 (CVE-2006-4339) [Ben Laurie and Google Security Team] 7096 7097 *) Change the Unix randomness entropy gathering to use poll() when 7098 possible instead of select(), since the latter has some 7099 undesirable limitations. 7100 [Darryl Miles via Richard Levitte and Bodo Moeller] 7101 7102 *) Disable rogue ciphersuites: 7103 7104 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 7105 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 7106 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 7107 7108 The latter two were purportedly from 7109 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 7110 appear there. 7111 7112 Also deactivate the remaining ciphersuites from 7113 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 7114 unofficial, and the ID has long expired. 7115 [Bodo Moeller] 7116 7117 *) Fix RSA blinding Heisenbug (problems sometimes occurred on 7118 dual-core machines) and other potential thread-safety issues. 7119 [Bodo Moeller] 7120 7121 Changes between 0.9.7i and 0.9.7j [04 May 2006] 7122 7123 *) Adapt fipsld and the build system to link against the validated FIPS 7124 module in FIPS mode. 7125 [Steve Henson] 7126 7127 *) Fixes for VC++ 2005 build under Windows. 7128 [Steve Henson] 7129 7130 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make 7131 from a Windows bash shell such as MSYS. It is autodetected from the 7132 "config" script when run from a VC++ environment. Modify standard VC++ 7133 build to use fipscanister.o from the GNU make build. 7134 [Steve Henson] 7135 7136 Changes between 0.9.7h and 0.9.7i [14 Oct 2005] 7137 7138 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS. 7139 The value now differs depending on if you build for FIPS or not. 7140 BEWARE! A program linked with a shared FIPSed libcrypto can't be 7141 safely run with a non-FIPSed libcrypto, as it may crash because of 7142 the difference induced by this change. 7143 [Andy Polyakov] 7144 7145 Changes between 0.9.7g and 0.9.7h [11 Oct 2005] 7146 7147 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 7148 (part of SSL_OP_ALL). This option used to disable the 7149 countermeasure against man-in-the-middle protocol-version 7150 rollback in the SSL 2.0 server implementation, which is a bad 7151 idea. (CVE-2005-2969) 7152 7153 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 7154 for Information Security, National Institute of Advanced Industrial 7155 Science and Technology [AIST], Japan)] 7156 7157 *) Minimal support for X9.31 signatures and PSS padding modes. This is 7158 mainly for FIPS compliance and not fully integrated at this stage. 7159 [Steve Henson] 7160 7161 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform 7162 the exponentiation using a fixed-length exponent. (Otherwise, 7163 the information leaked through timing could expose the secret key 7164 after many signatures; cf. Bleichenbacher's attack on DSA with 7165 biased k.) 7166 [Bodo Moeller] 7167 7168 *) Make a new fixed-window mod_exp implementation the default for 7169 RSA, DSA, and DH private-key operations so that the sequence of 7170 squares and multiplies and the memory access pattern are 7171 independent of the particular secret key. This will mitigate 7172 cache-timing and potential related attacks. 7173 7174 BN_mod_exp_mont_consttime() is the new exponentiation implementation, 7175 and this is automatically used by BN_mod_exp_mont() if the new flag 7176 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH 7177 will use this BN flag for private exponents unless the flag 7178 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or 7179 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set. 7180 7181 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller] 7182 7183 *) Change the client implementation for SSLv23_method() and 7184 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0 7185 Client Hello message format if the SSL_OP_NO_SSLv2 option is set. 7186 (Previously, the SSL 2.0 backwards compatible Client Hello 7187 message format would be used even with SSL_OP_NO_SSLv2.) 7188 [Bodo Moeller] 7189 7190 *) Add support for smime-type MIME parameter in S/MIME messages which some 7191 clients need. 7192 [Steve Henson] 7193 7194 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in 7195 a threadsafe manner. Modify rsa code to use new function and add calls 7196 to dsa and dh code (which had race conditions before). 7197 [Steve Henson] 7198 7199 *) Include the fixed error library code in the C error file definitions 7200 instead of fixing them up at runtime. This keeps the error code 7201 structures constant. 7202 [Steve Henson] 7203 7204 Changes between 0.9.7f and 0.9.7g [11 Apr 2005] 7205 7206 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after 7207 OpenSSL 0.9.8.] 7208 7209 *) Fixes for newer kerberos headers. NB: the casts are needed because 7210 the 'length' field is signed on one version and unsigned on another 7211 with no (?) obvious way to tell the difference, without these VC++ 7212 complains. Also the "definition" of FAR (blank) is no longer included 7213 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up 7214 some needed definitions. 7215 [Steve Henson] 7216 7217 *) Undo Cygwin change. 7218 [Ulf Möller] 7219 7220 *) Added support for proxy certificates according to RFC 3820. 7221 Because they may be a security thread to unaware applications, 7222 they must be explicitly allowed in run-time. See 7223 docs/HOWTO/proxy_certificates.txt for further information. 7224 [Richard Levitte] 7225 7226 Changes between 0.9.7e and 0.9.7f [22 Mar 2005] 7227 7228 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating 7229 server and client random values. Previously 7230 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in 7231 less random data when sizeof(time_t) > 4 (some 64 bit platforms). 7232 7233 This change has negligible security impact because: 7234 7235 1. Server and client random values still have 24 bytes of pseudo random 7236 data. 7237 7238 2. Server and client random values are sent in the clear in the initial 7239 handshake. 7240 7241 3. The master secret is derived using the premaster secret (48 bytes in 7242 size for static RSA ciphersuites) as well as client server and random 7243 values. 7244 7245 The OpenSSL team would like to thank the UK NISCC for bringing this issue 7246 to our attention. 7247 7248 [Stephen Henson, reported by UK NISCC] 7249 7250 *) Use Windows randomness collection on Cygwin. 7251 [Ulf Möller] 7252 7253 *) Fix hang in EGD/PRNGD query when communication socket is closed 7254 prematurely by EGD/PRNGD. 7255 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014] 7256 7257 *) Prompt for pass phrases when appropriate for PKCS12 input format. 7258 [Steve Henson] 7259 7260 *) Back-port of selected performance improvements from development 7261 branch, as well as improved support for PowerPC platforms. 7262 [Andy Polyakov] 7263 7264 *) Add lots of checks for memory allocation failure, error codes to indicate 7265 failure and freeing up memory if a failure occurs. 7266 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson] 7267 7268 *) Add new -passin argument to dgst. 7269 [Steve Henson] 7270 7271 *) Perform some character comparisons of different types in X509_NAME_cmp: 7272 this is needed for some certificates that re-encode DNs into UTF8Strings 7273 (in violation of RFC3280) and can't or won't issue name rollover 7274 certificates. 7275 [Steve Henson] 7276 7277 *) Make an explicit check during certificate validation to see that 7278 the CA setting in each certificate on the chain is correct. As a 7279 side effect always do the following basic checks on extensions, 7280 not just when there's an associated purpose to the check: 7281 7282 - if there is an unhandled critical extension (unless the user 7283 has chosen to ignore this fault) 7284 - if the path length has been exceeded (if one is set at all) 7285 - that certain extensions fit the associated purpose (if one has 7286 been given) 7287 [Richard Levitte] 7288 7289 Changes between 0.9.7d and 0.9.7e [25 Oct 2004] 7290 7291 *) Avoid a race condition when CRLs are checked in a multi threaded 7292 environment. This would happen due to the reordering of the revoked 7293 entries during signature checking and serial number lookup. Now the 7294 encoding is cached and the serial number sort performed under a lock. 7295 Add new STACK function sk_is_sorted(). 7296 [Steve Henson] 7297 7298 *) Add Delta CRL to the extension code. 7299 [Steve Henson] 7300 7301 *) Various fixes to s3_pkt.c so alerts are sent properly. 7302 [David Holmes <d.holmes@f5.com>] 7303 7304 *) Reduce the chances of duplicate issuer name and serial numbers (in 7305 violation of RFC3280) using the OpenSSL certificate creation utilities. 7306 This is done by creating a random 64 bit value for the initial serial 7307 number when a serial number file is created or when a self signed 7308 certificate is created using 'openssl req -x509'. The initial serial 7309 number file is created using 'openssl x509 -next_serial' in CA.pl 7310 rather than being initialized to 1. 7311 [Steve Henson] 7312 7313 Changes between 0.9.7c and 0.9.7d [17 Mar 2004] 7314 7315 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 7316 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 7317 [Joe Orton, Steve Henson] 7318 7319 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites 7320 (CVE-2004-0112) 7321 [Joe Orton, Steve Henson] 7322 7323 *) Make it possible to have multiple active certificates with the same 7324 subject in the CA index file. This is done only if the keyword 7325 'unique_subject' is set to 'no' in the main CA section (default 7326 if 'CA_default') of the configuration file. The value is saved 7327 with the database itself in a separate index attribute file, 7328 named like the index file with '.attr' appended to the name. 7329 [Richard Levitte] 7330 7331 *) X509 verify fixes. Disable broken certificate workarounds when 7332 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if 7333 keyUsage extension present. Don't accept CRLs with unhandled critical 7334 extensions: since verify currently doesn't process CRL extensions this 7335 rejects a CRL with *any* critical extensions. Add new verify error codes 7336 for these cases. 7337 [Steve Henson] 7338 7339 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue. 7340 A clarification of RFC2560 will require the use of OCTET STRINGs and 7341 some implementations cannot handle the current raw format. Since OpenSSL 7342 copies and compares OCSP nonces as opaque blobs without any attempt at 7343 parsing them this should not create any compatibility issues. 7344 [Steve Henson] 7345 7346 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when 7347 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without 7348 this HMAC (and other) operations are several times slower than OpenSSL 7349 < 0.9.7. 7350 [Steve Henson] 7351 7352 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex(). 7353 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] 7354 7355 *) Use the correct content when signing type "other". 7356 [Steve Henson] 7357 7358 Changes between 0.9.7b and 0.9.7c [30 Sep 2003] 7359 7360 *) Fix various bugs revealed by running the NISCC test suite: 7361 7362 Stop out of bounds reads in the ASN1 code when presented with 7363 invalid tags (CVE-2003-0543 and CVE-2003-0544). 7364 7365 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545). 7366 7367 If verify callback ignores invalid public key errors don't try to check 7368 certificate signature with the NULL public key. 7369 7370 [Steve Henson] 7371 7372 *) New -ignore_err option in ocsp application to stop the server 7373 exiting on the first error in a request. 7374 [Steve Henson] 7375 7376 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 7377 if the server requested one: as stated in TLS 1.0 and SSL 3.0 7378 specifications. 7379 [Steve Henson] 7380 7381 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 7382 extra data after the compression methods not only for TLS 1.0 7383 but also for SSL 3.0 (as required by the specification). 7384 [Bodo Moeller; problem pointed out by Matthias Loepfe] 7385 7386 *) Change X509_certificate_type() to mark the key as exported/exportable 7387 when it's 512 *bits* long, not 512 bytes. 7388 [Richard Levitte] 7389 7390 *) Change AES_cbc_encrypt() so it outputs exact multiple of 7391 blocks during encryption. 7392 [Richard Levitte] 7393 7394 *) Various fixes to base64 BIO and non blocking I/O. On write 7395 flushes were not handled properly if the BIO retried. On read 7396 data was not being buffered properly and had various logic bugs. 7397 This also affects blocking I/O when the data being decoded is a 7398 certain size. 7399 [Steve Henson] 7400 7401 *) Various S/MIME bugfixes and compatibility changes: 7402 output correct application/pkcs7 MIME type if 7403 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures. 7404 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening 7405 of files as .eml work). Correctly handle very long lines in MIME 7406 parser. 7407 [Steve Henson] 7408 7409 Changes between 0.9.7a and 0.9.7b [10 Apr 2003] 7410 7411 *) Countermeasure against the Klima-Pokorny-Rosa extension of 7412 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 7413 a protocol version number mismatch like a decryption error 7414 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 7415 [Bodo Moeller] 7416 7417 *) Turn on RSA blinding by default in the default implementation 7418 to avoid a timing attack. Applications that don't want it can call 7419 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 7420 They would be ill-advised to do so in most cases. 7421 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 7422 7423 *) Change RSA blinding code so that it works when the PRNG is not 7424 seeded (in this case, the secret RSA exponent is abused as 7425 an unpredictable seed -- if it is not unpredictable, there 7426 is no point in blinding anyway). Make RSA blinding thread-safe 7427 by remembering the creator's thread ID in rsa->blinding and 7428 having all other threads use local one-time blinding factors 7429 (this requires more computation than sharing rsa->blinding, but 7430 avoids excessive locking; and if an RSA object is not shared 7431 between threads, blinding will still be very fast). 7432 [Bodo Moeller] 7433 7434 *) Fixed a typo bug that would cause ENGINE_set_default() to set an 7435 ENGINE as defaults for all supported algorithms irrespective of 7436 the 'flags' parameter. 'flags' is now honoured, so applications 7437 should make sure they are passing it correctly. 7438 [Geoff Thorpe] 7439 7440 *) Target "mingw" now allows native Windows code to be generated in 7441 the Cygwin environment as well as with the MinGW compiler. 7442 [Ulf Moeller] 7443 7444 Changes between 0.9.7 and 0.9.7a [19 Feb 2003] 7445 7446 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 7447 via timing by performing a MAC computation even if incorrect 7448 block cipher padding has been found. This is a countermeasure 7449 against active attacks where the attacker has to distinguish 7450 between bad padding and a MAC verification error. (CVE-2003-0078) 7451 7452 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 7453 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 7454 Martin Vuagnoux (EPFL, Ilion)] 7455 7456 *) Make the no-err option work as intended. The intention with no-err 7457 is not to have the whole error stack handling routines removed from 7458 libcrypto, it's only intended to remove all the function name and 7459 reason texts, thereby removing some of the footprint that may not 7460 be interesting if those errors aren't displayed anyway. 7461 7462 NOTE: it's still possible for any application or module to have its 7463 own set of error texts inserted. The routines are there, just not 7464 used by default when no-err is given. 7465 [Richard Levitte] 7466 7467 *) Add support for FreeBSD on IA64. 7468 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454] 7469 7470 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT 7471 Kerberos function mit_des_cbc_cksum(). Before this change, 7472 the value returned by DES_cbc_cksum() was like the one from 7473 mit_des_cbc_cksum(), except the bytes were swapped. 7474 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte] 7475 7476 *) Allow an application to disable the automatic SSL chain building. 7477 Before this a rather primitive chain build was always performed in 7478 ssl3_output_cert_chain(): an application had no way to send the 7479 correct chain if the automatic operation produced an incorrect result. 7480 7481 Now the chain builder is disabled if either: 7482 7483 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert(). 7484 7485 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set. 7486 7487 The reasoning behind this is that an application would not want the 7488 auto chain building to take place if extra chain certificates are 7489 present and it might also want a means of sending no additional 7490 certificates (for example the chain has two certificates and the 7491 root is omitted). 7492 [Steve Henson] 7493 7494 *) Add the possibility to build without the ENGINE framework. 7495 [Steven Reddie <smr@essemer.com.au> via Richard Levitte] 7496 7497 *) Under Win32 gmtime() can return NULL: check return value in 7498 OPENSSL_gmtime(). Add error code for case where gmtime() fails. 7499 [Steve Henson] 7500 7501 *) DSA routines: under certain error conditions uninitialized BN objects 7502 could be freed. Solution: make sure initialization is performed early 7503 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>, 7504 Nils Larsch <nla@trustcenter.de> via PR#459) 7505 [Lutz Jaenicke] 7506 7507 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly 7508 checked on reconnect on the client side, therefore session resumption 7509 could still fail with a "ssl session id is different" error. This 7510 behaviour is masked when SSL_OP_ALL is used due to 7511 SSL_OP_MICROSOFT_SESS_ID_BUG being set. 7512 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as 7513 followup to PR #377. 7514 [Lutz Jaenicke] 7515 7516 *) IA-32 assembler support enhancements: unified ELF targets, support 7517 for SCO/Caldera platforms, fix for Cygwin shared build. 7518 [Andy Polyakov] 7519 7520 *) Add support for FreeBSD on sparc64. As a consequence, support for 7521 FreeBSD on non-x86 processors is separate from x86 processors on 7522 the config script, much like the NetBSD support. 7523 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>] 7524 7525 Changes between 0.9.6h and 0.9.7 [31 Dec 2002] 7526 7527 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after 7528 OpenSSL 0.9.7.] 7529 7530 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED 7531 code (06) was taken as the first octet of the session ID and the last 7532 octet was ignored consequently. As a result SSLv2 client side session 7533 caching could not have worked due to the session ID mismatch between 7534 client and server. 7535 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as 7536 PR #377. 7537 [Lutz Jaenicke] 7538 7539 *) Change the declaration of needed Kerberos libraries to use EX_LIBS 7540 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is 7541 removed entirely. 7542 [Richard Levitte] 7543 7544 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it 7545 seems that in spite of existing for more than a year, many application 7546 author have done nothing to provide the necessary callbacks, which 7547 means that this particular engine will not work properly anywhere. 7548 This is a very unfortunate situation which forces us, in the name 7549 of usability, to give the hw_ncipher.c a static lock, which is part 7550 of libcrypto. 7551 NOTE: This is for the 0.9.7 series ONLY. This hack will never 7552 appear in 0.9.8 or later. We EXPECT application authors to have 7553 dealt properly with this when 0.9.8 is released (unless we actually 7554 make such changes in the libcrypto locking code that changes will 7555 have to be made anyway). 7556 [Richard Levitte] 7557 7558 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content 7559 octets have been read, EOF or an error occurs. Without this change 7560 some truncated ASN1 structures will not produce an error. 7561 [Steve Henson] 7562 7563 *) Disable Heimdal support, since it hasn't been fully implemented. 7564 Still give the possibility to force the use of Heimdal, but with 7565 warnings and a request that patches get sent to openssl-dev. 7566 [Richard Levitte] 7567 7568 *) Add the VC-CE target, introduce the WINCE sysname, and add 7569 INSTALL.WCE and appropriate conditionals to make it build. 7570 [Steven Reddie <smr@essemer.com.au> via Richard Levitte] 7571 7572 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and 7573 cygssl-x.y.z.dll, where x, y and z are the major, minor and 7574 edit numbers of the version. 7575 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] 7576 7577 *) Introduce safe string copy and catenation functions 7578 (BUF_strlcpy() and BUF_strlcat()). 7579 [Ben Laurie (CHATS) and Richard Levitte] 7580 7581 *) Avoid using fixed-size buffers for one-line DNs. 7582 [Ben Laurie (CHATS)] 7583 7584 *) Add BUF_MEM_grow_clean() to avoid information leakage when 7585 resizing buffers containing secrets, and use where appropriate. 7586 [Ben Laurie (CHATS)] 7587 7588 *) Avoid using fixed size buffers for configuration file location. 7589 [Ben Laurie (CHATS)] 7590 7591 *) Avoid filename truncation for various CA files. 7592 [Ben Laurie (CHATS)] 7593 7594 *) Use sizeof in preference to magic numbers. 7595 [Ben Laurie (CHATS)] 7596 7597 *) Avoid filename truncation in cert requests. 7598 [Ben Laurie (CHATS)] 7599 7600 *) Add assertions to check for (supposedly impossible) buffer 7601 overflows. 7602 [Ben Laurie (CHATS)] 7603 7604 *) Don't cache truncated DNS entries in the local cache (this could 7605 potentially lead to a spoofing attack). 7606 [Ben Laurie (CHATS)] 7607 7608 *) Fix various buffers to be large enough for hex/decimal 7609 representations in a platform independent manner. 7610 [Ben Laurie (CHATS)] 7611 7612 *) Add CRYPTO_realloc_clean() to avoid information leakage when 7613 resizing buffers containing secrets, and use where appropriate. 7614 [Ben Laurie (CHATS)] 7615 7616 *) Add BIO_indent() to avoid much slightly worrying code to do 7617 indents. 7618 [Ben Laurie (CHATS)] 7619 7620 *) Convert sprintf()/BIO_puts() to BIO_printf(). 7621 [Ben Laurie (CHATS)] 7622 7623 *) buffer_gets() could terminate with the buffer only half 7624 full. Fixed. 7625 [Ben Laurie (CHATS)] 7626 7627 *) Add assertions to prevent user-supplied crypto functions from 7628 overflowing internal buffers by having large block sizes, etc. 7629 [Ben Laurie (CHATS)] 7630 7631 *) New OPENSSL_assert() macro (similar to assert(), but enabled 7632 unconditionally). 7633 [Ben Laurie (CHATS)] 7634 7635 *) Eliminate unused copy of key in RC4. 7636 [Ben Laurie (CHATS)] 7637 7638 *) Eliminate unused and incorrectly sized buffers for IV in pem.h. 7639 [Ben Laurie (CHATS)] 7640 7641 *) Fix off-by-one error in EGD path. 7642 [Ben Laurie (CHATS)] 7643 7644 *) If RANDFILE path is too long, ignore instead of truncating. 7645 [Ben Laurie (CHATS)] 7646 7647 *) Eliminate unused and incorrectly sized X.509 structure 7648 CBCParameter. 7649 [Ben Laurie (CHATS)] 7650 7651 *) Eliminate unused and dangerous function knumber(). 7652 [Ben Laurie (CHATS)] 7653 7654 *) Eliminate unused and dangerous structure, KSSL_ERR. 7655 [Ben Laurie (CHATS)] 7656 7657 *) Protect against overlong session ID context length in an encoded 7658 session object. Since these are local, this does not appear to be 7659 exploitable. 7660 [Ben Laurie (CHATS)] 7661 7662 *) Change from security patch (see 0.9.6e below) that did not affect 7663 the 0.9.6 release series: 7664 7665 Remote buffer overflow in SSL3 protocol - an attacker could 7666 supply an oversized master key in Kerberos-enabled versions. 7667 (CVE-2002-0657) 7668 [Ben Laurie (CHATS)] 7669 7670 *) Change the SSL kerb5 codes to match RFC 2712. 7671 [Richard Levitte] 7672 7673 *) Make -nameopt work fully for req and add -reqopt switch. 7674 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson] 7675 7676 *) The "block size" for block ciphers in CFB and OFB mode should be 1. 7677 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>] 7678 7679 *) Make sure tests can be performed even if the corresponding algorithms 7680 have been removed entirely. This was also the last step to make 7681 OpenSSL compilable with DJGPP under all reasonable conditions. 7682 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>] 7683 7684 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT 7685 to allow version independent disabling of normally unselected ciphers, 7686 which may be activated as a side-effect of selecting a single cipher. 7687 7688 (E.g., cipher list string "RSA" enables ciphersuites that are left 7689 out of "ALL" because they do not provide symmetric encryption. 7690 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.) 7691 [Lutz Jaenicke, Bodo Moeller] 7692 7693 *) Add appropriate support for separate platform-dependent build 7694 directories. The recommended way to make a platform-dependent 7695 build directory is the following (tested on Linux), maybe with 7696 some local tweaks: 7697 7698 # Place yourself outside of the OpenSSL source tree. In 7699 # this example, the environment variable OPENSSL_SOURCE 7700 # is assumed to contain the absolute OpenSSL source directory. 7701 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`" 7702 cd objtree/"`uname -s`-`uname -r`-`uname -m`" 7703 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do 7704 mkdir -p `dirname $F` 7705 ln -s $OPENSSL_SOURCE/$F $F 7706 done 7707 7708 To be absolutely sure not to disturb the source tree, a "make clean" 7709 is a good thing. If it isn't successful, don't worry about it, 7710 it probably means the source directory is very clean. 7711 [Richard Levitte] 7712 7713 *) Make sure any ENGINE control commands make local copies of string 7714 pointers passed to them whenever necessary. Otherwise it is possible 7715 the caller may have overwritten (or deallocated) the original string 7716 data when a later ENGINE operation tries to use the stored values. 7717 [Götz Babin-Ebell <babinebell@trustcenter.de>] 7718 7719 *) Improve diagnostics in file reading and command-line digests. 7720 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>] 7721 7722 *) Add AES modes CFB and OFB to the object database. Correct an 7723 error in AES-CFB decryption. 7724 [Richard Levitte] 7725 7726 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this 7727 allows existing EVP_CIPHER_CTX structures to be reused after 7728 calling EVP_*Final(). This behaviour is used by encryption 7729 BIOs and some applications. This has the side effect that 7730 applications must explicitly clean up cipher contexts with 7731 EVP_CIPHER_CTX_cleanup() or they will leak memory. 7732 [Steve Henson] 7733 7734 *) Check the values of dna and dnb in bn_mul_recursive before calling 7735 bn_mul_comba (a non zero value means the a or b arrays do not contain 7736 n2 elements) and fallback to bn_mul_normal if either is not zero. 7737 [Steve Henson] 7738 7739 *) Fix escaping of non-ASCII characters when using the -subj option 7740 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>) 7741 [Lutz Jaenicke] 7742 7743 *) Make object definitions compliant to LDAP (RFC2256): SN is the short 7744 form for "surname", serialNumber has no short form. 7745 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798; 7746 therefore remove "mail" short name for "internet 7". 7747 The OID for unique identifiers in X509 certificates is 7748 x500UniqueIdentifier, not uniqueIdentifier. 7749 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>) 7750 [Lutz Jaenicke] 7751 7752 *) Add an "init" command to the ENGINE config module and auto initialize 7753 ENGINEs. Without any "init" command the ENGINE will be initialized 7754 after all ctrl commands have been executed on it. If init=1 the 7755 ENGINE is initialized at that point (ctrls before that point are run 7756 on the uninitialized ENGINE and after on the initialized one). If 7757 init=0 then the ENGINE will not be initialized at all. 7758 [Steve Henson] 7759 7760 *) Fix the 'app_verify_callback' interface so that the user-defined 7761 argument is actually passed to the callback: In the 7762 SSL_CTX_set_cert_verify_callback() prototype, the callback 7763 declaration has been changed from 7764 int (*cb)() 7765 into 7766 int (*cb)(X509_STORE_CTX *,void *); 7767 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call 7768 i=s->ctx->app_verify_callback(&ctx) 7769 has been changed into 7770 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg). 7771 7772 To update applications using SSL_CTX_set_cert_verify_callback(), 7773 a dummy argument can be added to their callback functions. 7774 [D. K. Smetters <smetters@parc.xerox.com>] 7775 7776 *) Added the '4758cca' ENGINE to support IBM 4758 cards. 7777 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe] 7778 7779 *) Add and OPENSSL_LOAD_CONF define which will cause 7780 OpenSSL_add_all_algorithms() to load the openssl.cnf config file. 7781 This allows older applications to transparently support certain 7782 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading. 7783 Two new functions OPENSSL_add_all_algorithms_noconf() which will never 7784 load the config file and OPENSSL_add_all_algorithms_conf() which will 7785 always load it have also been added. 7786 [Steve Henson] 7787 7788 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES. 7789 Adjust NIDs and EVP layer. 7790 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] 7791 7792 *) Config modules support in openssl utility. 7793 7794 Most commands now load modules from the config file, 7795 though in a few (such as version) this isn't done 7796 because it couldn't be used for anything. 7797 7798 In the case of ca and req the config file used is 7799 the same as the utility itself: that is the -config 7800 command line option can be used to specify an 7801 alternative file. 7802 [Steve Henson] 7803 7804 *) Move default behaviour from OPENSSL_config(). If appname is NULL 7805 use "openssl_conf" if filename is NULL use default openssl config file. 7806 [Steve Henson] 7807 7808 *) Add an argument to OPENSSL_config() to allow the use of an alternative 7809 config section name. Add a new flag to tolerate a missing config file 7810 and move code to CONF_modules_load_file(). 7811 [Steve Henson] 7812 7813 *) Support for crypto accelerator cards from Accelerated Encryption 7814 Processing, www.aep.ie. (Use engine 'aep') 7815 The support was copied from 0.9.6c [engine] and adapted/corrected 7816 to work with the new engine framework. 7817 [AEP Inc. and Richard Levitte] 7818 7819 *) Support for SureWare crypto accelerator cards from Baltimore 7820 Technologies. (Use engine 'sureware') 7821 The support was copied from 0.9.6c [engine] and adapted 7822 to work with the new engine framework. 7823 [Richard Levitte] 7824 7825 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually 7826 make the newer ENGINE framework commands for the CHIL engine work. 7827 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte] 7828 7829 *) Make it possible to produce shared libraries on ReliantUNIX. 7830 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte] 7831 7832 *) Add the configuration target debug-linux-ppro. 7833 Make 'openssl rsa' use the general key loading routines 7834 implemented in apps.c, and make those routines able to 7835 handle the key format FORMAT_NETSCAPE and the variant 7836 FORMAT_IISSGC. 7837 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 7838 7839 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 7840 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 7841 7842 *) Add -keyform to rsautl, and document -engine. 7843 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>] 7844 7845 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new 7846 BIO_R_NO_SUCH_FILE error code rather than the generic 7847 ERR_R_SYS_LIB error code if fopen() fails with ENOENT. 7848 [Ben Laurie] 7849 7850 *) Add new functions 7851 ERR_peek_last_error 7852 ERR_peek_last_error_line 7853 ERR_peek_last_error_line_data. 7854 These are similar to 7855 ERR_peek_error 7856 ERR_peek_error_line 7857 ERR_peek_error_line_data, 7858 but report on the latest error recorded rather than the first one 7859 still in the error queue. 7860 [Ben Laurie, Bodo Moeller] 7861 7862 *) default_algorithms option in ENGINE config module. This allows things 7863 like: 7864 default_algorithms = ALL 7865 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS 7866 [Steve Henson] 7867 7868 *) Preliminary ENGINE config module. 7869 [Steve Henson] 7870 7871 *) New experimental application configuration code. 7872 [Steve Henson] 7873 7874 *) Change the AES code to follow the same name structure as all other 7875 symmetric ciphers, and behave the same way. Move everything to 7876 the directory crypto/aes, thereby obsoleting crypto/rijndael. 7877 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] 7878 7879 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c. 7880 [Ben Laurie and Theo de Raadt] 7881 7882 *) Add option to output public keys in req command. 7883 [Massimiliano Pala madwolf@openca.org] 7884 7885 *) Use wNAFs in EC_POINTs_mul() for improved efficiency 7886 (up to about 10% better than before for P-192 and P-224). 7887 [Bodo Moeller] 7888 7889 *) New functions/macros 7890 7891 SSL_CTX_set_msg_callback(ctx, cb) 7892 SSL_CTX_set_msg_callback_arg(ctx, arg) 7893 SSL_set_msg_callback(ssl, cb) 7894 SSL_set_msg_callback_arg(ssl, arg) 7895 7896 to request calling a callback function 7897 7898 void cb(int write_p, int version, int content_type, 7899 const void *buf, size_t len, SSL *ssl, void *arg) 7900 7901 whenever a protocol message has been completely received 7902 (write_p == 0) or sent (write_p == 1). Here 'version' is the 7903 protocol version according to which the SSL library interprets 7904 the current protocol message (SSL2_VERSION, SSL3_VERSION, or 7905 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or 7906 the content type as defined in the SSL 3.0/TLS 1.0 protocol 7907 specification (change_cipher_spec(20), alert(21), handshake(22)). 7908 'buf' and 'len' point to the actual message, 'ssl' to the 7909 SSL object, and 'arg' is the application-defined value set by 7910 SSL[_CTX]_set_msg_callback_arg(). 7911 7912 'openssl s_client' and 'openssl s_server' have new '-msg' options 7913 to enable a callback that displays all protocol messages. 7914 [Bodo Moeller] 7915 7916 *) Change the shared library support so shared libraries are built as 7917 soon as the corresponding static library is finished, and thereby get 7918 openssl and the test programs linked against the shared library. 7919 This still only happens when the keyword "shard" has been given to 7920 the configuration scripts. 7921 7922 NOTE: shared library support is still an experimental thing, and 7923 backward binary compatibility is still not guaranteed. 7924 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte] 7925 7926 *) Add support for Subject Information Access extension. 7927 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] 7928 7929 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero 7930 additional bytes when new memory had to be allocated, not just 7931 when reusing an existing buffer. 7932 [Bodo Moeller] 7933 7934 *) New command line and configuration option 'utf8' for the req command. 7935 This allows field values to be specified as UTF8 strings. 7936 [Steve Henson] 7937 7938 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel 7939 runs for the former and machine-readable output for the latter. 7940 [Ben Laurie] 7941 7942 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion 7943 of the e-mail address in the DN (i.e., it will go into a certificate 7944 extension only). The new configuration file option 'email_in_dn = no' 7945 has the same effect. 7946 [Massimiliano Pala madwolf@openca.org] 7947 7948 *) Change all functions with names starting with des_ to be starting 7949 with DES_ instead. Add wrappers that are compatible with libdes, 7950 but are named _ossl_old_des_*. Finally, add macros that map the 7951 des_* symbols to the corresponding _ossl_old_des_* if libdes 7952 compatibility is desired. If OpenSSL 0.9.6c compatibility is 7953 desired, the des_* symbols will be mapped to DES_*, with one 7954 exception. 7955 7956 Since we provide two compatibility mappings, the user needs to 7957 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes 7958 compatibility is desired. The default (i.e., when that macro 7959 isn't defined) is OpenSSL 0.9.6c compatibility. 7960 7961 There are also macros that enable and disable the support of old 7962 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT 7963 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those 7964 are defined, the default will apply: to support the old des routines. 7965 7966 In either case, one must include openssl/des.h to get the correct 7967 definitions. Do not try to just include openssl/des_old.h, that 7968 won't work. 7969 7970 NOTE: This is a major break of an old API into a new one. Software 7971 authors are encouraged to switch to the DES_ style functions. Some 7972 time in the future, des_old.h and the libdes compatibility functions 7973 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the 7974 default), and then completely removed. 7975 [Richard Levitte] 7976 7977 *) Test for certificates which contain unsupported critical extensions. 7978 If such a certificate is found during a verify operation it is 7979 rejected by default: this behaviour can be overridden by either 7980 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or 7981 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function 7982 X509_supported_extension() has also been added which returns 1 if a 7983 particular extension is supported. 7984 [Steve Henson] 7985 7986 *) Modify the behaviour of EVP cipher functions in similar way to digests 7987 to retain compatibility with existing code. 7988 [Steve Henson] 7989 7990 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain 7991 compatibility with existing code. In particular the 'ctx' parameter does 7992 not have to be to be initialized before the call to EVP_DigestInit() and 7993 it is tidied up after a call to EVP_DigestFinal(). New function 7994 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function 7995 EVP_MD_CTX_copy() changed to not require the destination to be 7996 initialized valid and new function EVP_MD_CTX_copy_ex() added which 7997 requires the destination to be valid. 7998 7999 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(), 8000 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex(). 8001 [Steve Henson] 8002 8003 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it 8004 so that complete 'Handshake' protocol structures are kept in memory 8005 instead of overwriting 'msg_type' and 'length' with 'body' data. 8006 [Bodo Moeller] 8007 8008 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32. 8009 [Massimo Santin via Richard Levitte] 8010 8011 *) Major restructuring to the underlying ENGINE code. This includes 8012 reduction of linker bloat, separation of pure "ENGINE" manipulation 8013 (initialisation, etc) from functionality dealing with implementations 8014 of specific crypto interfaces. This change also introduces integrated 8015 support for symmetric ciphers and digest implementations - so ENGINEs 8016 can now accelerate these by providing EVP_CIPHER and EVP_MD 8017 implementations of their own. This is detailed in crypto/engine/README 8018 as it couldn't be adequately described here. However, there are a few 8019 API changes worth noting - some RSA, DSA, DH, and RAND functions that 8020 were changed in the original introduction of ENGINE code have now 8021 reverted back - the hooking from this code to ENGINE is now a good 8022 deal more passive and at run-time, operations deal directly with 8023 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than 8024 dereferencing through an ENGINE pointer any more. Also, the ENGINE 8025 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed - 8026 they were not being used by the framework as there is no concept of a 8027 BIGNUM_METHOD and they could not be generalised to the new 8028 'ENGINE_TABLE' mechanism that underlies the new code. Similarly, 8029 ENGINE_cpy() has been removed as it cannot be consistently defined in 8030 the new code. 8031 [Geoff Thorpe] 8032 8033 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds. 8034 [Steve Henson] 8035 8036 *) Change mkdef.pl to sort symbols that get the same entry number, 8037 and make sure the automatically generated functions ERR_load_* 8038 become part of libeay.num as well. 8039 [Richard Levitte] 8040 8041 *) New function SSL_renegotiate_pending(). This returns true once 8042 renegotiation has been requested (either SSL_renegotiate() call 8043 or HelloRequest/ClientHello received from the peer) and becomes 8044 false once a handshake has been completed. 8045 (For servers, SSL_renegotiate() followed by SSL_do_handshake() 8046 sends a HelloRequest, but does not ensure that a handshake takes 8047 place. SSL_renegotiate_pending() is useful for checking if the 8048 client has followed the request.) 8049 [Bodo Moeller] 8050 8051 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION. 8052 By default, clients may request session resumption even during 8053 renegotiation (if session ID contexts permit); with this option, 8054 session resumption is possible only in the first handshake. 8055 8056 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes 8057 more bits available for options that should not be part of 8058 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION). 8059 [Bodo Moeller] 8060 8061 *) Add some demos for certificate and certificate request creation. 8062 [Steve Henson] 8063 8064 *) Make maximum certificate chain size accepted from the peer application 8065 settable (SSL*_get/set_max_cert_list()), as proposed by 8066 "Douglas E. Engert" <deengert@anl.gov>. 8067 [Lutz Jaenicke] 8068 8069 *) Add support for shared libraries for Unixware-7 8070 (Boyd Lynn Gerber <gerberb@zenez.com>). 8071 [Lutz Jaenicke] 8072 8073 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to 8074 be done prior to destruction. Use this to unload error strings from 8075 ENGINEs that load their own error strings. NB: This adds two new API 8076 functions to "get" and "set" this destroy handler in an ENGINE. 8077 [Geoff Thorpe] 8078 8079 *) Alter all existing ENGINE implementations (except "openssl" and 8080 "openbsd") to dynamically instantiate their own error strings. This 8081 makes them more flexible to be built both as statically-linked ENGINEs 8082 and self-contained shared-libraries loadable via the "dynamic" ENGINE. 8083 Also, add stub code to each that makes building them as self-contained 8084 shared-libraries easier (see README.ENGINE). 8085 [Geoff Thorpe] 8086 8087 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE 8088 implementations into applications that are completely implemented in 8089 self-contained shared-libraries. The "dynamic" ENGINE exposes control 8090 commands that can be used to configure what shared-library to load and 8091 to control aspects of the way it is handled. Also, made an update to 8092 the README.ENGINE file that brings its information up-to-date and 8093 provides some information and instructions on the "dynamic" ENGINE 8094 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc). 8095 [Geoff Thorpe] 8096 8097 *) Make it possible to unload ranges of ERR strings with a new 8098 "ERR_unload_strings" function. 8099 [Geoff Thorpe] 8100 8101 *) Add a copy() function to EVP_MD. 8102 [Ben Laurie] 8103 8104 *) Make EVP_MD routines take a context pointer instead of just the 8105 md_data void pointer. 8106 [Ben Laurie] 8107 8108 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates 8109 that the digest can only process a single chunk of data 8110 (typically because it is provided by a piece of 8111 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application 8112 is only going to provide a single chunk of data, and hence the 8113 framework needn't accumulate the data for oneshot drivers. 8114 [Ben Laurie] 8115 8116 *) As with "ERR", make it possible to replace the underlying "ex_data" 8117 functions. This change also alters the storage and management of global 8118 ex_data state - it's now all inside ex_data.c and all "class" code (eg. 8119 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class 8120 index counters. The API functions that use this state have been changed 8121 to take a "class_index" rather than pointers to the class's local STACK 8122 and counter, and there is now an API function to dynamically create new 8123 classes. This centralisation allows us to (a) plug a lot of the 8124 thread-safety problems that existed, and (b) makes it possible to clean 8125 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b) 8126 such data would previously have always leaked in application code and 8127 workarounds were in place to make the memory debugging turn a blind eye 8128 to it. Application code that doesn't use this new function will still 8129 leak as before, but their memory debugging output will announce it now 8130 rather than letting it slide. 8131 8132 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change 8133 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now 8134 has a return value to indicate success or failure. 8135 [Geoff Thorpe] 8136 8137 *) Make it possible to replace the underlying "ERR" functions such that the 8138 global state (2 LHASH tables and 2 locks) is only used by the "default" 8139 implementation. This change also adds two functions to "get" and "set" 8140 the implementation prior to it being automatically set the first time 8141 any other ERR function takes place. Ie. an application can call "get", 8142 pass the return value to a module it has just loaded, and that module 8143 can call its own "set" function using that value. This means the 8144 module's "ERR" operations will use (and modify) the error state in the 8145 application and not in its own statically linked copy of OpenSSL code. 8146 [Geoff Thorpe] 8147 8148 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment 8149 reference counts. This performs normal REF_PRINT/REF_CHECK macros on 8150 the operation, and provides a more encapsulated way for external code 8151 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code 8152 to use these functions rather than manually incrementing the counts. 8153 8154 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()". 8155 [Geoff Thorpe] 8156 8157 *) Add EVP test program. 8158 [Ben Laurie] 8159 8160 *) Add symmetric cipher support to ENGINE. Expect the API to change! 8161 [Ben Laurie] 8162 8163 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name() 8164 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(), 8165 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate(). 8166 These allow a CRL to be built without having to access X509_CRL fields 8167 directly. Modify 'ca' application to use new functions. 8168 [Steve Henson] 8169 8170 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended 8171 bug workarounds. Rollback attack detection is a security feature. 8172 The problem will only arise on OpenSSL servers when TLSv1 is not 8173 available (sslv3_server_method() or SSL_OP_NO_TLSv1). 8174 Software authors not wanting to support TLSv1 will have special reasons 8175 for their choice and can explicitly enable this option. 8176 [Bodo Moeller, Lutz Jaenicke] 8177 8178 *) Rationalise EVP so it can be extended: don't include a union of 8179 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX 8180 (similar to those existing for EVP_CIPHER_CTX). 8181 Usage example: 8182 8183 EVP_MD_CTX md; 8184 8185 EVP_MD_CTX_init(&md); /* new function call */ 8186 EVP_DigestInit(&md, EVP_sha1()); 8187 EVP_DigestUpdate(&md, in, len); 8188 EVP_DigestFinal(&md, out, NULL); 8189 EVP_MD_CTX_cleanup(&md); /* new function call */ 8190 8191 [Ben Laurie] 8192 8193 *) Make DES key schedule conform to the usual scheme, as well as 8194 correcting its structure. This means that calls to DES functions 8195 now have to pass a pointer to a des_key_schedule instead of a 8196 plain des_key_schedule (which was actually always a pointer 8197 anyway): E.g., 8198 8199 des_key_schedule ks; 8200 8201 des_set_key_checked(..., &ks); 8202 des_ncbc_encrypt(..., &ks, ...); 8203 8204 (Note that a later change renames 'des_...' into 'DES_...'.) 8205 [Ben Laurie] 8206 8207 *) Initial reduction of linker bloat: the use of some functions, such as 8208 PEM causes large amounts of unused functions to be linked in due to 8209 poor organisation. For example pem_all.c contains every PEM function 8210 which has a knock on effect of linking in large amounts of (unused) 8211 ASN1 code. Grouping together similar functions and splitting unrelated 8212 functions prevents this. 8213 [Steve Henson] 8214 8215 *) Cleanup of EVP macros. 8216 [Ben Laurie] 8217 8218 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the 8219 correct _ecb suffix. 8220 [Ben Laurie] 8221 8222 *) Add initial OCSP responder support to ocsp application. The 8223 revocation information is handled using the text based index 8224 use by the ca application. The responder can either handle 8225 requests generated internally, supplied in files (for example 8226 via a CGI script) or using an internal minimal server. 8227 [Steve Henson] 8228 8229 *) Add configuration choices to get zlib compression for TLS. 8230 [Richard Levitte] 8231 8232 *) Changes to Kerberos SSL for RFC 2712 compliance: 8233 1. Implemented real KerberosWrapper, instead of just using 8234 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>] 8235 2. Implemented optional authenticator field of KerberosWrapper. 8236 8237 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req, 8238 and authenticator structs; see crypto/krb5/. 8239 8240 Generalized Kerberos calls to support multiple Kerberos libraries. 8241 [Vern Staats <staatsvr@asc.hpc.mil>, 8242 Jeffrey Altman <jaltman@columbia.edu> 8243 via Richard Levitte] 8244 8245 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it 8246 already does with RSA. testdsa.h now has 'priv_key/pub_key' 8247 values for each of the key sizes rather than having just 8248 parameters (and 'speed' generating keys each time). 8249 [Geoff Thorpe] 8250 8251 *) Speed up EVP routines. 8252 Before: 8253encrypt 8254type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 8255des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k 8256des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k 8257des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k 8258decrypt 8259des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k 8260des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k 8261des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k 8262 After: 8263encrypt 8264des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k 8265decrypt 8266des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k 8267 [Ben Laurie] 8268 8269 *) Added the OS2-EMX target. 8270 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte] 8271 8272 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions 8273 to support NCONF routines in extension code. New function CONF_set_nconf() 8274 to allow functions which take an NCONF to also handle the old LHASH 8275 structure: this means that the old CONF compatible routines can be 8276 retained (in particular wrt extensions) without having to duplicate the 8277 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack. 8278 [Steve Henson] 8279 8280 *) Enhance the general user interface with mechanisms for inner control 8281 and with possibilities to have yes/no kind of prompts. 8282 [Richard Levitte] 8283 8284 *) Change all calls to low level digest routines in the library and 8285 applications to use EVP. Add missing calls to HMAC_cleanup() and 8286 don't assume HMAC_CTX can be copied using memcpy(). 8287 [Verdon Walker <VWalker@novell.com>, Steve Henson] 8288 8289 *) Add the possibility to control engines through control names but with 8290 arbitrary arguments instead of just a string. 8291 Change the key loaders to take a UI_METHOD instead of a callback 8292 function pointer. NOTE: this breaks binary compatibility with earlier 8293 versions of OpenSSL [engine]. 8294 Adapt the nCipher code for these new conditions and add a card insertion 8295 callback. 8296 [Richard Levitte] 8297 8298 *) Enhance the general user interface with mechanisms to better support 8299 dialog box interfaces, application-defined prompts, the possibility 8300 to use defaults (for example default passwords from somewhere else) 8301 and interrupts/cancellations. 8302 [Richard Levitte] 8303 8304 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name 8305 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility. 8306 [Steve Henson] 8307 8308 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also 8309 tidy up some unnecessarily weird code in 'sk_new()'). 8310 [Geoff, reported by Diego Tartara <dtartara@novamens.com>] 8311 8312 *) Change the key loading routines for ENGINEs to use the same kind 8313 callback (pem_password_cb) as all other routines that need this 8314 kind of callback. 8315 [Richard Levitte] 8316 8317 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with 8318 256 bit (=32 byte) keys. Of course seeding with more entropy bytes 8319 than this minimum value is recommended. 8320 [Lutz Jaenicke] 8321 8322 *) New random seeder for OpenVMS, using the system process statistics 8323 that are easily reachable. 8324 [Richard Levitte] 8325 8326 *) Windows apparently can't transparently handle global 8327 variables defined in DLLs. Initialisations such as: 8328 8329 const ASN1_ITEM *it = &ASN1_INTEGER_it; 8330 8331 won't compile. This is used by the any applications that need to 8332 declare their own ASN1 modules. This was fixed by adding the option 8333 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly 8334 needed for static libraries under Win32. 8335 [Steve Henson] 8336 8337 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle 8338 setting of purpose and trust fields. New X509_STORE trust and 8339 purpose functions and tidy up setting in other SSL functions. 8340 [Steve Henson] 8341 8342 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE 8343 structure. These are inherited by X509_STORE_CTX when it is 8344 initialised. This allows various defaults to be set in the 8345 X509_STORE structure (such as flags for CRL checking and custom 8346 purpose or trust settings) for functions which only use X509_STORE_CTX 8347 internally such as S/MIME. 8348 8349 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and 8350 trust settings if they are not set in X509_STORE. This allows X509_STORE 8351 purposes and trust (in S/MIME for example) to override any set by default. 8352 8353 Add command line options for CRL checking to smime, s_client and s_server 8354 applications. 8355 [Steve Henson] 8356 8357 *) Initial CRL based revocation checking. If the CRL checking flag(s) 8358 are set then the CRL is looked up in the X509_STORE structure and 8359 its validity and signature checked, then if the certificate is found 8360 in the CRL the verify fails with a revoked error. 8361 8362 Various new CRL related callbacks added to X509_STORE_CTX structure. 8363 8364 Command line options added to 'verify' application to support this. 8365 8366 This needs some additional work, such as being able to handle multiple 8367 CRLs with different times, extension based lookup (rather than just 8368 by subject name) and ultimately more complete V2 CRL extension 8369 handling. 8370 [Steve Henson] 8371 8372 *) Add a general user interface API (crypto/ui/). This is designed 8373 to replace things like des_read_password and friends (backward 8374 compatibility functions using this new API are provided). 8375 The purpose is to remove prompting functions from the DES code 8376 section as well as provide for prompting through dialog boxes in 8377 a window system and the like. 8378 [Richard Levitte] 8379 8380 *) Add "ex_data" support to ENGINE so implementations can add state at a 8381 per-structure level rather than having to store it globally. 8382 [Geoff] 8383 8384 *) Make it possible for ENGINE structures to be copied when retrieved by 8385 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY. 8386 This causes the "original" ENGINE structure to act like a template, 8387 analogous to the RSA vs. RSA_METHOD type of separation. Because of this 8388 operational state can be localised to each ENGINE structure, despite the 8389 fact they all share the same "methods". New ENGINE structures returned in 8390 this case have no functional references and the return value is the single 8391 structural reference. This matches the single structural reference returned 8392 by ENGINE_by_id() normally, when it is incremented on the pre-existing 8393 ENGINE structure. 8394 [Geoff] 8395 8396 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this 8397 needs to match any other type at all we need to manually clear the 8398 tag cache. 8399 [Steve Henson] 8400 8401 *) Changes to the "openssl engine" utility to include; 8402 - verbosity levels ('-v', '-vv', and '-vvv') that provide information 8403 about an ENGINE's available control commands. 8404 - executing control commands from command line arguments using the 8405 '-pre' and '-post' switches. '-post' is only used if '-t' is 8406 specified and the ENGINE is successfully initialised. The syntax for 8407 the individual commands are colon-separated, for example; 8408 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so 8409 [Geoff] 8410 8411 *) New dynamic control command support for ENGINEs. ENGINEs can now 8412 declare their own commands (numbers), names (strings), descriptions, 8413 and input types for run-time discovery by calling applications. A 8414 subset of these commands are implicitly classed as "executable" 8415 depending on their input type, and only these can be invoked through 8416 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this 8417 can be based on user input, config files, etc). The distinction is 8418 that "executable" commands cannot return anything other than a boolean 8419 result and can only support numeric or string input, whereas some 8420 discoverable commands may only be for direct use through 8421 ENGINE_ctrl(), eg. supporting the exchange of binary data, function 8422 pointers, or other custom uses. The "executable" commands are to 8423 support parameterisations of ENGINE behaviour that can be 8424 unambiguously defined by ENGINEs and used consistently across any 8425 OpenSSL-based application. Commands have been added to all the 8426 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow 8427 control over shared-library paths without source code alterations. 8428 [Geoff] 8429 8430 *) Changed all ENGINE implementations to dynamically allocate their 8431 ENGINEs rather than declaring them statically. Apart from this being 8432 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction, 8433 this also allows the implementations to compile without using the 8434 internal engine_int.h header. 8435 [Geoff] 8436 8437 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a 8438 'const' value. Any code that should be able to modify a RAND_METHOD 8439 should already have non-const pointers to it (ie. they should only 8440 modify their own ones). 8441 [Geoff] 8442 8443 *) Made a variety of little tweaks to the ENGINE code. 8444 - "atalla" and "ubsec" string definitions were moved from header files 8445 to C code. "nuron" string definitions were placed in variables 8446 rather than hard-coded - allowing parameterisation of these values 8447 later on via ctrl() commands. 8448 - Removed unused "#if 0"'d code. 8449 - Fixed engine list iteration code so it uses ENGINE_free() to release 8450 structural references. 8451 - Constified the RAND_METHOD element of ENGINE structures. 8452 - Constified various get/set functions as appropriate and added 8453 missing functions (including a catch-all ENGINE_cpy that duplicates 8454 all ENGINE values onto a new ENGINE except reference counts/state). 8455 - Removed NULL parameter checks in get/set functions. Setting a method 8456 or function to NULL is a way of cancelling out a previously set 8457 value. Passing a NULL ENGINE parameter is just plain stupid anyway 8458 and doesn't justify the extra error symbols and code. 8459 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for 8460 flags from engine_int.h to engine.h. 8461 - Changed prototypes for ENGINE handler functions (init(), finish(), 8462 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter. 8463 [Geoff] 8464 8465 *) Implement binary inversion algorithm for BN_mod_inverse in addition 8466 to the algorithm using long division. The binary algorithm can be 8467 used only if the modulus is odd. On 32-bit systems, it is faster 8468 only for relatively small moduli (roughly 20-30% for 128-bit moduli, 8469 roughly 5-15% for 256-bit moduli), so we use it only for moduli 8470 up to 450 bits. In 64-bit environments, the binary algorithm 8471 appears to be advantageous for much longer moduli; here we use it 8472 for moduli up to 2048 bits. 8473 [Bodo Moeller] 8474 8475 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code 8476 could not support the combine flag in choice fields. 8477 [Steve Henson] 8478 8479 *) Add a 'copy_extensions' option to the 'ca' utility. This copies 8480 extensions from a certificate request to the certificate. 8481 [Steve Henson] 8482 8483 *) Allow multiple 'certopt' and 'nameopt' options to be separated 8484 by commas. Add 'namopt' and 'certopt' options to the 'ca' config 8485 file: this allows the display of the certificate about to be 8486 signed to be customised, to allow certain fields to be included 8487 or excluded and extension details. The old system didn't display 8488 multicharacter strings properly, omitted fields not in the policy 8489 and couldn't display additional details such as extensions. 8490 [Steve Henson] 8491 8492 *) Function EC_POINTs_mul for multiple scalar multiplication 8493 of an arbitrary number of elliptic curve points 8494 \sum scalars[i]*points[i], 8495 optionally including the generator defined for the EC_GROUP: 8496 scalar*generator + \sum scalars[i]*points[i]. 8497 8498 EC_POINT_mul is a simple wrapper function for the typical case 8499 that the point list has just one item (besides the optional 8500 generator). 8501 [Bodo Moeller] 8502 8503 *) First EC_METHODs for curves over GF(p): 8504 8505 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr 8506 operations and provides various method functions that can also 8507 operate with faster implementations of modular arithmetic. 8508 8509 EC_GFp_mont_method() reuses most functions that are part of 8510 EC_GFp_simple_method, but uses Montgomery arithmetic. 8511 8512 [Bodo Moeller; point addition and point doubling 8513 implementation directly derived from source code provided by 8514 Lenka Fibikova <fibikova@exp-math.uni-essen.de>] 8515 8516 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h, 8517 crypto/ec/ec_lib.c): 8518 8519 Curves are EC_GROUP objects (with an optional group generator) 8520 based on EC_METHODs that are built into the library. 8521 8522 Points are EC_POINT objects based on EC_GROUP objects. 8523 8524 Most of the framework would be able to handle curves over arbitrary 8525 finite fields, but as there are no obvious types for fields other 8526 than GF(p), some functions are limited to that for now. 8527 [Bodo Moeller] 8528 8529 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires 8530 that the file contains a complete HTTP response. 8531 [Richard Levitte] 8532 8533 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl 8534 change the def and num file printf format specifier from "%-40sXXX" 8535 to "%-39s XXX". The latter will always guarantee a space after the 8536 field while the former will cause them to run together if the field 8537 is 40 of more characters long. 8538 [Steve Henson] 8539 8540 *) Constify the cipher and digest 'method' functions and structures 8541 and modify related functions to take constant EVP_MD and EVP_CIPHER 8542 pointers. 8543 [Steve Henson] 8544 8545 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them 8546 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32. 8547 [Bodo Moeller] 8548 8549 *) Modify EVP_Digest*() routines so they now return values. Although the 8550 internal software routines can never fail additional hardware versions 8551 might. 8552 [Steve Henson] 8553 8554 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts: 8555 8556 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7 8557 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32. 8558 8559 ASN1 error codes 8560 ERR_R_NESTED_ASN1_ERROR 8561 ... 8562 ERR_R_MISSING_ASN1_EOS 8563 were 4 .. 9, conflicting with 8564 ERR_LIB_RSA (= ERR_R_RSA_LIB) 8565 ... 8566 ERR_LIB_PEM (= ERR_R_PEM_LIB). 8567 They are now 58 .. 63 (i.e., just below ERR_R_FATAL). 8568 8569 Add new error code 'ERR_R_INTERNAL_ERROR'. 8570 [Bodo Moeller] 8571 8572 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock 8573 suffices. 8574 [Bodo Moeller] 8575 8576 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This 8577 sets the subject name for a new request or supersedes the 8578 subject name in a given request. Formats that can be parsed are 8579 'CN=Some Name, OU=myOU, C=IT' 8580 and 8581 'CN=Some Name/OU=myOU/C=IT'. 8582 8583 Add options '-batch' and '-verbose' to 'openssl req'. 8584 [Massimiliano Pala <madwolf@hackmasters.net>] 8585 8586 *) Introduce the possibility to access global variables through 8587 functions on platform were that's the best way to handle exporting 8588 global variables in shared libraries. To enable this functionality, 8589 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro 8590 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter 8591 is normally done by Configure or something similar). 8592 8593 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL 8594 in the source file (foo.c) like this: 8595 8596 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1; 8597 OPENSSL_IMPLEMENT_GLOBAL(double,bar); 8598 8599 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL 8600 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this: 8601 8602 OPENSSL_DECLARE_GLOBAL(int,foo); 8603 #define foo OPENSSL_GLOBAL_REF(foo) 8604 OPENSSL_DECLARE_GLOBAL(double,bar); 8605 #define bar OPENSSL_GLOBAL_REF(bar) 8606 8607 The #defines are very important, and therefore so is including the 8608 header file everywhere where the defined globals are used. 8609 8610 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition 8611 of ASN.1 items, but that structure is a bit different. 8612 8613 The largest change is in util/mkdef.pl which has been enhanced with 8614 better and easier to understand logic to choose which symbols should 8615 go into the Windows .def files as well as a number of fixes and code 8616 cleanup (among others, algorithm keywords are now sorted 8617 lexicographically to avoid constant rewrites). 8618 [Richard Levitte] 8619 8620 *) In BN_div() keep a copy of the sign of 'num' before writing the 8621 result to 'rm' because if rm==num the value will be overwritten 8622 and produce the wrong result if 'num' is negative: this caused 8623 problems with BN_mod() and BN_nnmod(). 8624 [Steve Henson] 8625 8626 *) Function OCSP_request_verify(). This checks the signature on an 8627 OCSP request and verifies the signer certificate. The signer 8628 certificate is just checked for a generic purpose and OCSP request 8629 trust settings. 8630 [Steve Henson] 8631 8632 *) Add OCSP_check_validity() function to check the validity of OCSP 8633 responses. OCSP responses are prepared in real time and may only 8634 be a few seconds old. Simply checking that the current time lies 8635 between thisUpdate and nextUpdate max reject otherwise valid responses 8636 caused by either OCSP responder or client clock inaccuracy. Instead 8637 we allow thisUpdate and nextUpdate to fall within a certain period of 8638 the current time. The age of the response can also optionally be 8639 checked. Two new options -validity_period and -status_age added to 8640 ocsp utility. 8641 [Steve Henson] 8642 8643 *) If signature or public key algorithm is unrecognized print out its 8644 OID rather that just UNKNOWN. 8645 [Steve Henson] 8646 8647 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and 8648 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate 8649 ID to be generated from the issuer certificate alone which can then be 8650 passed to OCSP_id_issuer_cmp(). 8651 [Steve Henson] 8652 8653 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new 8654 ASN1 modules to export functions returning ASN1_ITEM pointers 8655 instead of the ASN1_ITEM structures themselves. This adds several 8656 new macros which allow the underlying ASN1 function/structure to 8657 be accessed transparently. As a result code should not use ASN1_ITEM 8658 references directly (such as &X509_it) but instead use the relevant 8659 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow 8660 use of the new ASN1 code on platforms where exporting structures 8661 is problematical (for example in shared libraries) but exporting 8662 functions returning pointers to structures is not. 8663 [Steve Henson] 8664 8665 *) Add support for overriding the generation of SSL/TLS session IDs. 8666 These callbacks can be registered either in an SSL_CTX or per SSL. 8667 The purpose of this is to allow applications to control, if they wish, 8668 the arbitrary values chosen for use as session IDs, particularly as it 8669 can be useful for session caching in multiple-server environments. A 8670 command-line switch for testing this (and any client code that wishes 8671 to use such a feature) has been added to "s_server". 8672 [Geoff Thorpe, Lutz Jaenicke] 8673 8674 *) Modify mkdef.pl to recognise and parse preprocessor conditionals 8675 of the form '#if defined(...) || defined(...) || ...' and 8676 '#if !defined(...) && !defined(...) && ...'. This also avoids 8677 the growing number of special cases it was previously handling. 8678 [Richard Levitte] 8679 8680 *) Make all configuration macros available for application by making 8681 sure they are available in opensslconf.h, by giving them names starting 8682 with "OPENSSL_" to avoid conflicts with other packages and by making 8683 sure e_os2.h will cover all platform-specific cases together with 8684 opensslconf.h. 8685 Additionally, it is now possible to define configuration/platform- 8686 specific names (called "system identities"). In the C code, these 8687 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another 8688 macro with the name beginning with "OPENSSL_SYS_", which is determined 8689 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on 8690 what is available. 8691 [Richard Levitte] 8692 8693 *) New option -set_serial to 'req' and 'x509' this allows the serial 8694 number to use to be specified on the command line. Previously self 8695 signed certificates were hard coded with serial number 0 and the 8696 CA options of 'x509' had to use a serial number in a file which was 8697 auto incremented. 8698 [Steve Henson] 8699 8700 *) New options to 'ca' utility to support V2 CRL entry extensions. 8701 Currently CRL reason, invalidity date and hold instruction are 8702 supported. Add new CRL extensions to V3 code and some new objects. 8703 [Steve Henson] 8704 8705 *) New function EVP_CIPHER_CTX_set_padding() this is used to 8706 disable standard block padding (aka PKCS#5 padding) in the EVP 8707 API, which was previously mandatory. This means that the data is 8708 not padded in any way and so the total length much be a multiple 8709 of the block size, otherwise an error occurs. 8710 [Steve Henson] 8711 8712 *) Initial (incomplete) OCSP SSL support. 8713 [Steve Henson] 8714 8715 *) New function OCSP_parse_url(). This splits up a URL into its host, 8716 port and path components: primarily to parse OCSP URLs. New -url 8717 option to ocsp utility. 8718 [Steve Henson] 8719 8720 *) New nonce behavior. The return value of OCSP_check_nonce() now 8721 reflects the various checks performed. Applications can decide 8722 whether to tolerate certain situations such as an absent nonce 8723 in a response when one was present in a request: the ocsp application 8724 just prints out a warning. New function OCSP_add1_basic_nonce() 8725 this is to allow responders to include a nonce in a response even if 8726 the request is nonce-less. 8727 [Steve Henson] 8728 8729 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are 8730 skipped when using openssl x509 multiple times on a single input file, 8731 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs". 8732 [Bodo Moeller] 8733 8734 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string() 8735 set string type: to handle setting ASN1_TIME structures. Fix ca 8736 utility to correctly initialize revocation date of CRLs. 8737 [Steve Henson] 8738 8739 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override 8740 the clients preferred ciphersuites and rather use its own preferences. 8741 Should help to work around M$ SGC (Server Gated Cryptography) bug in 8742 Internet Explorer by ensuring unchanged hash method during stepup. 8743 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.) 8744 [Lutz Jaenicke] 8745 8746 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael 8747 to aes and add a new 'exist' option to print out symbols that don't 8748 appear to exist. 8749 [Steve Henson] 8750 8751 *) Additional options to ocsp utility to allow flags to be set and 8752 additional certificates supplied. 8753 [Steve Henson] 8754 8755 *) Add the option -VAfile to 'openssl ocsp', so the user can give the 8756 OCSP client a number of certificate to only verify the response 8757 signature against. 8758 [Richard Levitte] 8759 8760 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to 8761 handle the new API. Currently only ECB, CBC modes supported. Add new 8762 AES OIDs. 8763 8764 Add TLS AES ciphersuites as described in RFC3268, "Advanced 8765 Encryption Standard (AES) Ciphersuites for Transport Layer 8766 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were 8767 not enabled by default and were not part of the "ALL" ciphersuite 8768 alias because they were not yet official; they could be 8769 explicitly requested by specifying the "AESdraft" ciphersuite 8770 group alias. In the final release of OpenSSL 0.9.7, the group 8771 alias is called "AES" and is part of "ALL".) 8772 [Ben Laurie, Steve Henson, Bodo Moeller] 8773 8774 *) New function OCSP_copy_nonce() to copy nonce value (if present) from 8775 request to response. 8776 [Steve Henson] 8777 8778 *) Functions for OCSP responders. OCSP_request_onereq_count(), 8779 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info() 8780 extract information from a certificate request. OCSP_response_create() 8781 creates a response and optionally adds a basic response structure. 8782 OCSP_basic_add1_status() adds a complete single response to a basic 8783 response and returns the OCSP_SINGLERESP structure just added (to allow 8784 extensions to be included for example). OCSP_basic_add1_cert() adds a 8785 certificate to a basic response and OCSP_basic_sign() signs a basic 8786 response with various flags. New helper functions ASN1_TIME_check() 8787 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime() 8788 (converts ASN1_TIME to GeneralizedTime). 8789 [Steve Henson] 8790 8791 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}() 8792 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key 8793 structure from a certificate. X509_pubkey_digest() digests the public_key 8794 contents: this is used in various key identifiers. 8795 [Steve Henson] 8796 8797 *) Make sk_sort() tolerate a NULL argument. 8798 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>] 8799 8800 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates 8801 passed by the function are trusted implicitly. If any of them signed the 8802 response then it is assumed to be valid and is not verified. 8803 [Steve Henson] 8804 8805 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT 8806 to data. This was previously part of the PKCS7 ASN1 code. This 8807 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures. 8808 [Steve Henson, reported by Kenneth R. Robinette 8809 <support@securenetterm.com>] 8810 8811 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1 8812 routines: without these tracing memory leaks is very painful. 8813 Fix leaks in PKCS12 and PKCS7 routines. 8814 [Steve Henson] 8815 8816 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new(). 8817 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which 8818 effectively meant GeneralizedTime would never be used. Now it 8819 is initialised to -1 but X509_time_adj() now has to check the value 8820 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or 8821 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime. 8822 [Steve Henson, reported by Kenneth R. Robinette 8823 <support@securenetterm.com>] 8824 8825 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously 8826 result in a zero length in the ASN1_INTEGER structure which was 8827 not consistent with the structure when d2i_ASN1_INTEGER() was used 8828 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER() 8829 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER() 8830 where it did not print out a minus for negative ASN1_INTEGER. 8831 [Steve Henson] 8832 8833 *) Add summary printout to ocsp utility. The various functions which 8834 convert status values to strings have been renamed to: 8835 OCSP_response_status_str(), OCSP_cert_status_str() and 8836 OCSP_crl_reason_str() and are no longer static. New options 8837 to verify nonce values and to disable verification. OCSP response 8838 printout format cleaned up. 8839 [Steve Henson] 8840 8841 *) Add additional OCSP certificate checks. These are those specified 8842 in RFC2560. This consists of two separate checks: the CA of the 8843 certificate being checked must either be the OCSP signer certificate 8844 or the issuer of the OCSP signer certificate. In the latter case the 8845 OCSP signer certificate must contain the OCSP signing extended key 8846 usage. This check is performed by attempting to match the OCSP 8847 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash 8848 in the OCSP_CERTID structures of the response. 8849 [Steve Henson] 8850 8851 *) Initial OCSP certificate verification added to OCSP_basic_verify() 8852 and related routines. This uses the standard OpenSSL certificate 8853 verify routines to perform initial checks (just CA validity) and 8854 to obtain the certificate chain. Then additional checks will be 8855 performed on the chain. Currently the root CA is checked to see 8856 if it is explicitly trusted for OCSP signing. This is used to set 8857 a root CA as a global signing root: that is any certificate that 8858 chains to that CA is an acceptable OCSP signing certificate. 8859 [Steve Henson] 8860 8861 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3 8862 extensions from a separate configuration file. 8863 As when reading extensions from the main configuration file, 8864 the '-extensions ...' option may be used for specifying the 8865 section to use. 8866 [Massimiliano Pala <madwolf@comune.modena.it>] 8867 8868 *) New OCSP utility. Allows OCSP requests to be generated or 8869 read. The request can be sent to a responder and the output 8870 parsed, outputted or printed in text form. Not complete yet: 8871 still needs to check the OCSP response validity. 8872 [Steve Henson] 8873 8874 *) New subcommands for 'openssl ca': 8875 'openssl ca -status <serial>' prints the status of the cert with 8876 the given serial number (according to the index file). 8877 'openssl ca -updatedb' updates the expiry status of certificates 8878 in the index file. 8879 [Massimiliano Pala <madwolf@comune.modena.it>] 8880 8881 *) New '-newreq-nodes' command option to CA.pl. This is like 8882 '-newreq', but calls 'openssl req' with the '-nodes' option 8883 so that the resulting key is not encrypted. 8884 [Damien Miller <djm@mindrot.org>] 8885 8886 *) New configuration for the GNU Hurd. 8887 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte] 8888 8889 *) Initial code to implement OCSP basic response verify. This 8890 is currently incomplete. Currently just finds the signer's 8891 certificate and verifies the signature on the response. 8892 [Steve Henson] 8893 8894 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in 8895 value of OPENSSLDIR. This is available via the new '-d' option 8896 to 'openssl version', and is also included in 'openssl version -a'. 8897 [Bodo Moeller] 8898 8899 *) Allowing defining memory allocation callbacks that will be given 8900 file name and line number information in additional arguments 8901 (a const char* and an int). The basic functionality remains, as 8902 well as the original possibility to just replace malloc(), 8903 realloc() and free() by functions that do not know about these 8904 additional arguments. To register and find out the current 8905 settings for extended allocation functions, the following 8906 functions are provided: 8907 8908 CRYPTO_set_mem_ex_functions 8909 CRYPTO_set_locked_mem_ex_functions 8910 CRYPTO_get_mem_ex_functions 8911 CRYPTO_get_locked_mem_ex_functions 8912 8913 These work the same way as CRYPTO_set_mem_functions and friends. 8914 CRYPTO_get_[locked_]mem_functions now writes 0 where such an 8915 extended allocation function is enabled. 8916 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where 8917 a conventional allocation function is enabled. 8918 [Richard Levitte, Bodo Moeller] 8919 8920 *) Finish off removing the remaining LHASH function pointer casts. 8921 There should no longer be any prototype-casting required when using 8922 the LHASH abstraction, and any casts that remain are "bugs". See 8923 the callback types and macros at the head of lhash.h for details 8924 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example). 8925 [Geoff Thorpe] 8926 8927 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant. 8928 If /dev/[u]random devices are not available or do not return enough 8929 entropy, EGD style sockets (served by EGD or PRNGD) will automatically 8930 be queried. 8931 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and 8932 /etc/entropy will be queried once each in this sequence, querying stops 8933 when enough entropy was collected without querying more sockets. 8934 [Lutz Jaenicke] 8935 8936 *) Change the Unix RAND_poll() variant to be able to poll several 8937 random devices, as specified by DEVRANDOM, until a sufficient amount 8938 of data has been collected. We spend at most 10 ms on each file 8939 (select timeout) and read in non-blocking mode. DEVRANDOM now 8940 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom" 8941 (previously it was just the string "/dev/urandom"), so on typical 8942 platforms the 10 ms delay will never occur. 8943 Also separate out the Unix variant to its own file, rand_unix.c. 8944 For VMS, there's a currently-empty rand_vms.c. 8945 [Richard Levitte] 8946 8947 *) Move OCSP client related routines to ocsp_cl.c. These 8948 provide utility functions which an application needing 8949 to issue a request to an OCSP responder and analyse the 8950 response will typically need: as opposed to those which an 8951 OCSP responder itself would need which will be added later. 8952 8953 OCSP_request_sign() signs an OCSP request with an API similar 8954 to PKCS7_sign(). OCSP_response_status() returns status of OCSP 8955 response. OCSP_response_get1_basic() extracts basic response 8956 from response. OCSP_resp_find_status(): finds and extracts status 8957 information from an OCSP_CERTID structure (which will be created 8958 when the request structure is built). These are built from lower 8959 level functions which work on OCSP_SINGLERESP structures but 8960 won't normally be used unless the application wishes to examine 8961 extensions in the OCSP response for example. 8962 8963 Replace nonce routines with a pair of functions. 8964 OCSP_request_add1_nonce() adds a nonce value and optionally 8965 generates a random value. OCSP_check_nonce() checks the 8966 validity of the nonce in an OCSP response. 8967 [Steve Henson] 8968 8969 *) Change function OCSP_request_add() to OCSP_request_add0_id(). 8970 This doesn't copy the supplied OCSP_CERTID and avoids the 8971 need to free up the newly created id. Change return type 8972 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure. 8973 This can then be used to add extensions to the request. 8974 Deleted OCSP_request_new(), since most of its functionality 8975 is now in OCSP_REQUEST_new() (and the case insensitive name 8976 clash) apart from the ability to set the request name which 8977 will be added elsewhere. 8978 [Steve Henson] 8979 8980 *) Update OCSP API. Remove obsolete extensions argument from 8981 various functions. Extensions are now handled using the new 8982 OCSP extension code. New simple OCSP HTTP function which 8983 can be used to send requests and parse the response. 8984 [Steve Henson] 8985 8986 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new 8987 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN 8988 uses the special reorder version of SET OF to sort the attributes 8989 and reorder them to match the encoded order. This resolves a long 8990 standing problem: a verify on a PKCS7 structure just after signing 8991 it used to fail because the attribute order did not match the 8992 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes: 8993 it uses the received order. This is necessary to tolerate some broken 8994 software that does not order SET OF. This is handled by encoding 8995 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class) 8996 to produce the required SET OF. 8997 [Steve Henson] 8998 8999 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and 9000 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header 9001 files to get correct declarations of the ASN.1 item variables. 9002 [Richard Levitte] 9003 9004 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many 9005 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs: 9006 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was 9007 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i(). 9008 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant 9009 ASN1_ITEM and no wrapper functions. 9010 [Steve Henson] 9011 9012 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These 9013 replace the old function pointer based I/O routines. Change most of 9014 the *_d2i_bio() and *_d2i_fp() functions to use these. 9015 [Steve Henson] 9016 9017 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor 9018 lines, recognize more "algorithms" that can be deselected, and make 9019 it complain about algorithm deselection that isn't recognised. 9020 [Richard Levitte] 9021 9022 *) New ASN1 functions to handle dup, sign, verify, digest, pack and 9023 unpack operations in terms of ASN1_ITEM. Modify existing wrappers 9024 to use new functions. Add NO_ASN1_OLD which can be set to remove 9025 some old style ASN1 functions: this can be used to determine if old 9026 code will still work when these eventually go away. 9027 [Steve Henson] 9028 9029 *) New extension functions for OCSP structures, these follow the 9030 same conventions as certificates and CRLs. 9031 [Steve Henson] 9032 9033 *) New function X509V3_add1_i2d(). This automatically encodes and 9034 adds an extension. Its behaviour can be customised with various 9035 flags to append, replace or delete. Various wrappers added for 9036 certificates and CRLs. 9037 [Steve Henson] 9038 9039 *) Fix to avoid calling the underlying ASN1 print routine when 9040 an extension cannot be parsed. Correct a typo in the 9041 OCSP_SERVICELOC extension. Tidy up print OCSP format. 9042 [Steve Henson] 9043 9044 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate 9045 entries for variables. 9046 [Steve Henson] 9047 9048 *) Add functionality to apps/openssl.c for detecting locking 9049 problems: As the program is single-threaded, all we have 9050 to do is register a locking callback using an array for 9051 storing which locks are currently held by the program. 9052 [Bodo Moeller] 9053 9054 *) Use a lock around the call to CRYPTO_get_ex_new_index() in 9055 SSL_get_ex_data_X509_STORE_idx(), which is used in 9056 ssl_verify_cert_chain() and thus can be called at any time 9057 during TLS/SSL handshakes so that thread-safety is essential. 9058 Unfortunately, the ex_data design is not at all suited 9059 for multi-threaded use, so it probably should be abolished. 9060 [Bodo Moeller] 9061 9062 *) Added Broadcom "ubsec" ENGINE to OpenSSL. 9063 [Broadcom, tweaked and integrated by Geoff Thorpe] 9064 9065 *) Move common extension printing code to new function 9066 X509V3_print_extensions(). Reorganise OCSP print routines and 9067 implement some needed OCSP ASN1 functions. Add OCSP extensions. 9068 [Steve Henson] 9069 9070 *) New function X509_signature_print() to remove duplication in some 9071 print routines. 9072 [Steve Henson] 9073 9074 *) Add a special meaning when SET OF and SEQUENCE OF flags are both 9075 set (this was treated exactly the same as SET OF previously). This 9076 is used to reorder the STACK representing the structure to match the 9077 encoding. This will be used to get round a problem where a PKCS7 9078 structure which was signed could not be verified because the STACK 9079 order did not reflect the encoded order. 9080 [Steve Henson] 9081 9082 *) Reimplement the OCSP ASN1 module using the new code. 9083 [Steve Henson] 9084 9085 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure 9086 for its ASN1 operations. The old style function pointers still exist 9087 for now but they will eventually go away. 9088 [Steve Henson] 9089 9090 *) Merge in replacement ASN1 code from the ASN1 branch. This almost 9091 completely replaces the old ASN1 functionality with a table driven 9092 encoder and decoder which interprets an ASN1_ITEM structure describing 9093 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is 9094 largely maintained. Almost all of the old asn1_mac.h macro based ASN1 9095 has also been converted to the new form. 9096 [Steve Henson] 9097 9098 *) Change BN_mod_exp_recp so that negative moduli are tolerated 9099 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set 9100 so that BN_mod_exp_mont and BN_mod_exp_mont_word work 9101 for negative moduli. 9102 [Bodo Moeller] 9103 9104 *) Fix BN_uadd and BN_usub: Always return non-negative results instead 9105 of not touching the result's sign bit. 9106 [Bodo Moeller] 9107 9108 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be 9109 set. 9110 [Bodo Moeller] 9111 9112 *) Changed the LHASH code to use prototypes for callbacks, and created 9113 macros to declare and implement thin (optionally static) functions 9114 that provide type-safety and avoid function pointer casting for the 9115 type-specific callbacks. 9116 [Geoff Thorpe] 9117 9118 *) Added Kerberos Cipher Suites to be used with TLS, as written in 9119 RFC 2712. 9120 [Veers Staats <staatsvr@asc.hpc.mil>, 9121 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte] 9122 9123 *) Reformat the FAQ so the different questions and answers can be divided 9124 in sections depending on the subject. 9125 [Richard Levitte] 9126 9127 *) Have the zlib compression code load ZLIB.DLL dynamically under 9128 Windows. 9129 [Richard Levitte] 9130 9131 *) New function BN_mod_sqrt for computing square roots modulo a prime 9132 (using the probabilistic Tonelli-Shanks algorithm unless 9133 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can 9134 be handled deterministically). 9135 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] 9136 9137 *) Make BN_mod_inverse faster by explicitly handling small quotients 9138 in the Euclid loop. (Speed gain about 20% for small moduli [256 or 9139 512 bits], about 30% for larger ones [1024 or 2048 bits].) 9140 [Bodo Moeller] 9141 9142 *) New function BN_kronecker. 9143 [Bodo Moeller] 9144 9145 *) Fix BN_gcd so that it works on negative inputs; the result is 9146 positive unless both parameters are zero. 9147 Previously something reasonably close to an infinite loop was 9148 possible because numbers could be growing instead of shrinking 9149 in the implementation of Euclid's algorithm. 9150 [Bodo Moeller] 9151 9152 *) Fix BN_is_word() and BN_is_one() macros to take into account the 9153 sign of the number in question. 9154 9155 Fix BN_is_word(a,w) to work correctly for w == 0. 9156 9157 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w) 9158 because its test if the absolute value of 'a' equals 'w'. 9159 Note that BN_abs_is_word does *not* handle w == 0 reliably; 9160 it exists mostly for use in the implementations of BN_is_zero(), 9161 BN_is_one(), and BN_is_word(). 9162 [Bodo Moeller] 9163 9164 *) New function BN_swap. 9165 [Bodo Moeller] 9166 9167 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that 9168 the exponentiation functions are more likely to produce reasonable 9169 results on negative inputs. 9170 [Bodo Moeller] 9171 9172 *) Change BN_mod_mul so that the result is always non-negative. 9173 Previously, it could be negative if one of the factors was negative; 9174 I don't think anyone really wanted that behaviour. 9175 [Bodo Moeller] 9176 9177 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c 9178 (except for exponentiation, which stays in crypto/bn/bn_exp.c, 9179 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c) 9180 and add new functions: 9181 9182 BN_nnmod 9183 BN_mod_sqr 9184 BN_mod_add 9185 BN_mod_add_quick 9186 BN_mod_sub 9187 BN_mod_sub_quick 9188 BN_mod_lshift1 9189 BN_mod_lshift1_quick 9190 BN_mod_lshift 9191 BN_mod_lshift_quick 9192 9193 These functions always generate non-negative results. 9194 9195 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r 9196 such that |m| < r < 0, BN_nnmod will output rem + |m| instead). 9197 9198 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as 9199 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b] 9200 be reduced modulo m. 9201 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] 9202 9203#if 0 9204 The following entry accidentally appeared in the CHANGES file 9205 distributed with OpenSSL 0.9.7. The modifications described in 9206 it do *not* apply to OpenSSL 0.9.7. 9207 9208 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 9209 was actually never needed) and in BN_mul(). The removal in BN_mul() 9210 required a small change in bn_mul_part_recursive() and the addition 9211 of the functions bn_cmp_part_words(), bn_sub_part_words() and 9212 bn_add_part_words(), which do the same thing as bn_cmp_words(), 9213 bn_sub_words() and bn_add_words() except they take arrays with 9214 differing sizes. 9215 [Richard Levitte] 9216#endif 9217 9218 *) In 'openssl passwd', verify passwords read from the terminal 9219 unless the '-salt' option is used (which usually means that 9220 verification would just waste user's time since the resulting 9221 hash is going to be compared with some given password hash) 9222 or the new '-noverify' option is used. 9223 9224 This is an incompatible change, but it does not affect 9225 non-interactive use of 'openssl passwd' (passwords on the command 9226 line, '-stdin' option, '-in ...' option) and thus should not 9227 cause any problems. 9228 [Bodo Moeller] 9229 9230 *) Remove all references to RSAref, since there's no more need for it. 9231 [Richard Levitte] 9232 9233 *) Make DSO load along a path given through an environment variable 9234 (SHLIB_PATH) with shl_load(). 9235 [Richard Levitte] 9236 9237 *) Constify the ENGINE code as a result of BIGNUM constification. 9238 Also constify the RSA code and most things related to it. In a 9239 few places, most notable in the depth of the ASN.1 code, ugly 9240 casts back to non-const were required (to be solved at a later 9241 time) 9242 [Richard Levitte] 9243 9244 *) Make it so the openssl application has all engines loaded by default. 9245 [Richard Levitte] 9246 9247 *) Constify the BIGNUM routines a little more. 9248 [Richard Levitte] 9249 9250 *) Add the following functions: 9251 9252 ENGINE_load_cswift() 9253 ENGINE_load_chil() 9254 ENGINE_load_atalla() 9255 ENGINE_load_nuron() 9256 ENGINE_load_builtin_engines() 9257 9258 That way, an application can itself choose if external engines that 9259 are built-in in OpenSSL shall ever be used or not. The benefit is 9260 that applications won't have to be linked with libdl or other dso 9261 libraries unless it's really needed. 9262 9263 Changed 'openssl engine' to load all engines on demand. 9264 Changed the engine header files to avoid the duplication of some 9265 declarations (they differed!). 9266 [Richard Levitte] 9267 9268 *) 'openssl engine' can now list capabilities. 9269 [Richard Levitte] 9270 9271 *) Better error reporting in 'openssl engine'. 9272 [Richard Levitte] 9273 9274 *) Never call load_dh_param(NULL) in s_server. 9275 [Bodo Moeller] 9276 9277 *) Add engine application. It can currently list engines by name and 9278 identity, and test if they are actually available. 9279 [Richard Levitte] 9280 9281 *) Improve RPM specification file by forcing symbolic linking and making 9282 sure the installed documentation is also owned by root.root. 9283 [Damien Miller <djm@mindrot.org>] 9284 9285 *) Give the OpenSSL applications more possibilities to make use of 9286 keys (public as well as private) handled by engines. 9287 [Richard Levitte] 9288 9289 *) Add OCSP code that comes from CertCo. 9290 [Richard Levitte] 9291 9292 *) Add VMS support for the Rijndael code. 9293 [Richard Levitte] 9294 9295 *) Added untested support for Nuron crypto accelerator. 9296 [Ben Laurie] 9297 9298 *) Add support for external cryptographic devices. This code was 9299 previously distributed separately as the "engine" branch. 9300 [Geoff Thorpe, Richard Levitte] 9301 9302 *) Rework the filename-translation in the DSO code. It is now possible to 9303 have far greater control over how a "name" is turned into a filename 9304 depending on the operating environment and any oddities about the 9305 different shared library filenames on each system. 9306 [Geoff Thorpe] 9307 9308 *) Support threads on FreeBSD-elf in Configure. 9309 [Richard Levitte] 9310 9311 *) Fix for SHA1 assembly problem with MASM: it produces 9312 warnings about corrupt line number information when assembling 9313 with debugging information. This is caused by the overlapping 9314 of two sections. 9315 [Bernd Matthes <mainbug@celocom.de>, Steve Henson] 9316 9317 *) NCONF changes. 9318 NCONF_get_number() has no error checking at all. As a replacement, 9319 NCONF_get_number_e() is defined (_e for "error checking") and is 9320 promoted strongly. The old NCONF_get_number is kept around for 9321 binary backward compatibility. 9322 Make it possible for methods to load from something other than a BIO, 9323 by providing a function pointer that is given a name instead of a BIO. 9324 For example, this could be used to load configuration data from an 9325 LDAP server. 9326 [Richard Levitte] 9327 9328 *) Fix for non blocking accept BIOs. Added new I/O special reason 9329 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs 9330 with non blocking I/O was not possible because no retry code was 9331 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover 9332 this case. 9333 [Steve Henson] 9334 9335 *) Added the beginnings of Rijndael support. 9336 [Ben Laurie] 9337 9338 *) Fix for bug in DirectoryString mask setting. Add support for 9339 X509_NAME_print_ex() in 'req' and X509_print_ex() function 9340 to allow certificate printing to more controllable, additional 9341 'certopt' option to 'x509' to allow new printing options to be 9342 set. 9343 [Steve Henson] 9344 9345 *) Clean old EAY MD5 hack from e_os.h. 9346 [Richard Levitte] 9347 9348 Changes between 0.9.6l and 0.9.6m [17 Mar 2004] 9349 9350 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 9351 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 9352 [Joe Orton, Steve Henson] 9353 9354 Changes between 0.9.6k and 0.9.6l [04 Nov 2003] 9355 9356 *) Fix additional bug revealed by the NISCC test suite: 9357 9358 Stop bug triggering large recursion when presented with 9359 certain ASN.1 tags (CVE-2003-0851) 9360 [Steve Henson] 9361 9362 Changes between 0.9.6j and 0.9.6k [30 Sep 2003] 9363 9364 *) Fix various bugs revealed by running the NISCC test suite: 9365 9366 Stop out of bounds reads in the ASN1 code when presented with 9367 invalid tags (CVE-2003-0543 and CVE-2003-0544). 9368 9369 If verify callback ignores invalid public key errors don't try to check 9370 certificate signature with the NULL public key. 9371 9372 [Steve Henson] 9373 9374 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 9375 if the server requested one: as stated in TLS 1.0 and SSL 3.0 9376 specifications. 9377 [Steve Henson] 9378 9379 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 9380 extra data after the compression methods not only for TLS 1.0 9381 but also for SSL 3.0 (as required by the specification). 9382 [Bodo Moeller; problem pointed out by Matthias Loepfe] 9383 9384 *) Change X509_certificate_type() to mark the key as exported/exportable 9385 when it's 512 *bits* long, not 512 bytes. 9386 [Richard Levitte] 9387 9388 Changes between 0.9.6i and 0.9.6j [10 Apr 2003] 9389 9390 *) Countermeasure against the Klima-Pokorny-Rosa extension of 9391 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 9392 a protocol version number mismatch like a decryption error 9393 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 9394 [Bodo Moeller] 9395 9396 *) Turn on RSA blinding by default in the default implementation 9397 to avoid a timing attack. Applications that don't want it can call 9398 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 9399 They would be ill-advised to do so in most cases. 9400 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 9401 9402 *) Change RSA blinding code so that it works when the PRNG is not 9403 seeded (in this case, the secret RSA exponent is abused as 9404 an unpredictable seed -- if it is not unpredictable, there 9405 is no point in blinding anyway). Make RSA blinding thread-safe 9406 by remembering the creator's thread ID in rsa->blinding and 9407 having all other threads use local one-time blinding factors 9408 (this requires more computation than sharing rsa->blinding, but 9409 avoids excessive locking; and if an RSA object is not shared 9410 between threads, blinding will still be very fast). 9411 [Bodo Moeller] 9412 9413 Changes between 0.9.6h and 0.9.6i [19 Feb 2003] 9414 9415 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 9416 via timing by performing a MAC computation even if incorrect 9417 block cipher padding has been found. This is a countermeasure 9418 against active attacks where the attacker has to distinguish 9419 between bad padding and a MAC verification error. (CVE-2003-0078) 9420 9421 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 9422 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 9423 Martin Vuagnoux (EPFL, Ilion)] 9424 9425 Changes between 0.9.6g and 0.9.6h [5 Dec 2002] 9426 9427 *) New function OPENSSL_cleanse(), which is used to cleanse a section of 9428 memory from its contents. This is done with a counter that will 9429 place alternating values in each byte. This can be used to solve 9430 two issues: 1) the removal of calls to memset() by highly optimizing 9431 compilers, and 2) cleansing with other values than 0, since those can 9432 be read through on certain media, for example a swap space on disk. 9433 [Geoff Thorpe] 9434 9435 *) Bugfix: client side session caching did not work with external caching, 9436 because the session->cipher setting was not restored when reloading 9437 from the external cache. This problem was masked, when 9438 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set. 9439 (Found by Steve Haslam <steve@araqnid.ddts.net>.) 9440 [Lutz Jaenicke] 9441 9442 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total 9443 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33. 9444 [Zeev Lieber <zeev-l@yahoo.com>] 9445 9446 *) Undo an undocumented change introduced in 0.9.6e which caused 9447 repeated calls to OpenSSL_add_all_ciphers() and 9448 OpenSSL_add_all_digests() to be ignored, even after calling 9449 EVP_cleanup(). 9450 [Richard Levitte] 9451 9452 *) Change the default configuration reader to deal with last line not 9453 being properly terminated. 9454 [Richard Levitte] 9455 9456 *) Change X509_NAME_cmp() so it applies the special rules on handling 9457 DN values that are of type PrintableString, as well as RDNs of type 9458 emailAddress where the value has the type ia5String. 9459 [stefank@valicert.com via Richard Levitte] 9460 9461 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half 9462 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently 9463 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be 9464 the bitwise-OR of the two for use by the majority of applications 9465 wanting this behaviour, and update the docs. The documented 9466 behaviour and actual behaviour were inconsistent and had been 9467 changing anyway, so this is more a bug-fix than a behavioural 9468 change. 9469 [Geoff Thorpe, diagnosed by Nadav Har'El] 9470 9471 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c 9472 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes). 9473 [Bodo Moeller] 9474 9475 *) Fix initialization code race conditions in 9476 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(), 9477 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(), 9478 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(), 9479 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(), 9480 ssl2_get_cipher_by_char(), 9481 ssl3_get_cipher_by_char(). 9482 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller] 9483 9484 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after 9485 the cached sessions are flushed, as the remove_cb() might use ex_data 9486 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com> 9487 (see [openssl.org #212]). 9488 [Geoff Thorpe, Lutz Jaenicke] 9489 9490 *) Fix typo in OBJ_txt2obj which incorrectly passed the content 9491 length, instead of the encoding length to d2i_ASN1_OBJECT. 9492 [Steve Henson] 9493 9494 Changes between 0.9.6f and 0.9.6g [9 Aug 2002] 9495 9496 *) [In 0.9.6g-engine release:] 9497 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall'). 9498 [Lynn Gazis <lgazis@rainbow.com>] 9499 9500 Changes between 0.9.6e and 0.9.6f [8 Aug 2002] 9501 9502 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX 9503 and get fix the header length calculation. 9504 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>, 9505 Alon Kantor <alonk@checkpoint.com> (and others), 9506 Steve Henson] 9507 9508 *) Use proper error handling instead of 'assertions' in buffer 9509 overflow checks added in 0.9.6e. This prevents DoS (the 9510 assertions could call abort()). 9511 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller] 9512 9513 Changes between 0.9.6d and 0.9.6e [30 Jul 2002] 9514 9515 *) Add various sanity checks to asn1_get_length() to reject 9516 the ASN1 length bytes if they exceed sizeof(long), will appear 9517 negative or the content length exceeds the length of the 9518 supplied buffer. 9519 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] 9520 9521 *) Fix cipher selection routines: ciphers without encryption had no flags 9522 for the cipher strength set and where therefore not handled correctly 9523 by the selection routines (PR #130). 9524 [Lutz Jaenicke] 9525 9526 *) Fix EVP_dsa_sha macro. 9527 [Nils Larsch] 9528 9529 *) New option 9530 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 9531 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure 9532 that was added in OpenSSL 0.9.6d. 9533 9534 As the countermeasure turned out to be incompatible with some 9535 broken SSL implementations, the new option is part of SSL_OP_ALL. 9536 SSL_OP_ALL is usually employed when compatibility with weird SSL 9537 implementations is desired (e.g. '-bugs' option to 's_client' and 9538 's_server'), so the new option is automatically set in many 9539 applications. 9540 [Bodo Moeller] 9541 9542 *) Changes in security patch: 9543 9544 Changes marked "(CHATS)" were sponsored by the Defense Advanced 9545 Research Projects Agency (DARPA) and Air Force Research Laboratory, 9546 Air Force Materiel Command, USAF, under agreement number 9547 F30602-01-2-0537. 9548 9549 *) Add various sanity checks to asn1_get_length() to reject 9550 the ASN1 length bytes if they exceed sizeof(long), will appear 9551 negative or the content length exceeds the length of the 9552 supplied buffer. (CVE-2002-0659) 9553 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] 9554 9555 *) Assertions for various potential buffer overflows, not known to 9556 happen in practice. 9557 [Ben Laurie (CHATS)] 9558 9559 *) Various temporary buffers to hold ASCII versions of integers were 9560 too small for 64 bit platforms. (CVE-2002-0655) 9561 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)> 9562 9563 *) Remote buffer overflow in SSL3 protocol - an attacker could 9564 supply an oversized session ID to a client. (CVE-2002-0656) 9565 [Ben Laurie (CHATS)] 9566 9567 *) Remote buffer overflow in SSL2 protocol - an attacker could 9568 supply an oversized client master key. (CVE-2002-0656) 9569 [Ben Laurie (CHATS)] 9570 9571 Changes between 0.9.6c and 0.9.6d [9 May 2002] 9572 9573 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not 9574 encoded as NULL) with id-dsa-with-sha1. 9575 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller] 9576 9577 *) Check various X509_...() return values in apps/req.c. 9578 [Nils Larsch <nla@trustcenter.de>] 9579 9580 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines: 9581 an end-of-file condition would erroneously be flagged, when the CRLF 9582 was just at the end of a processed block. The bug was discovered when 9583 processing data through a buffering memory BIO handing the data to a 9584 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov 9585 <ptsekov@syntrex.com> and Nedelcho Stanev. 9586 [Lutz Jaenicke] 9587 9588 *) Implement a countermeasure against a vulnerability recently found 9589 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment 9590 before application data chunks to avoid the use of known IVs 9591 with data potentially chosen by the attacker. 9592 [Bodo Moeller] 9593 9594 *) Fix length checks in ssl3_get_client_hello(). 9595 [Bodo Moeller] 9596 9597 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently 9598 to prevent ssl3_read_internal() from incorrectly assuming that 9599 ssl3_read_bytes() found application data while handshake 9600 processing was enabled when in fact s->s3->in_read_app_data was 9601 merely automatically cleared during the initial handshake. 9602 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>] 9603 9604 *) Fix object definitions for Private and Enterprise: they were not 9605 recognized in their shortname (=lowercase) representation. Extend 9606 obj_dat.pl to issue an error when using undefined keywords instead 9607 of silently ignoring the problem (Svenning Sorensen 9608 <sss@sss.dnsalias.net>). 9609 [Lutz Jaenicke] 9610 9611 *) Fix DH_generate_parameters() so that it works for 'non-standard' 9612 generators, i.e. generators other than 2 and 5. (Previously, the 9613 code did not properly initialise the 'add' and 'rem' values to 9614 BN_generate_prime().) 9615 9616 In the new general case, we do not insist that 'generator' is 9617 actually a primitive root: This requirement is rather pointless; 9618 a generator of the order-q subgroup is just as good, if not 9619 better. 9620 [Bodo Moeller] 9621 9622 *) Map new X509 verification errors to alerts. Discovered and submitted by 9623 Tom Wu <tom@arcot.com>. 9624 [Lutz Jaenicke] 9625 9626 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from 9627 returning non-zero before the data has been completely received 9628 when using non-blocking I/O. 9629 [Bodo Moeller; problem pointed out by John Hughes] 9630 9631 *) Some of the ciphers missed the strength entry (SSL_LOW etc). 9632 [Ben Laurie, Lutz Jaenicke] 9633 9634 *) Fix bug in SSL_clear(): bad sessions were not removed (found by 9635 Yoram Zahavi <YoramZ@gilian.com>). 9636 [Lutz Jaenicke] 9637 9638 *) Add information about CygWin 1.3 and on, and preserve proper 9639 configuration for the versions before that. 9640 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] 9641 9642 *) Make removal from session cache (SSL_CTX_remove_session()) more robust: 9643 check whether we deal with a copy of a session and do not delete from 9644 the cache in this case. Problem reported by "Izhar Shoshani Levi" 9645 <izhar@checkpoint.com>. 9646 [Lutz Jaenicke] 9647 9648 *) Do not store session data into the internal session cache, if it 9649 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 9650 flag is set). Proposed by Aslam <aslam@funk.com>. 9651 [Lutz Jaenicke] 9652 9653 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested 9654 value is 0. 9655 [Richard Levitte] 9656 9657 *) [In 0.9.6d-engine release:] 9658 Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 9659 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 9660 9661 *) Add the configuration target linux-s390x. 9662 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte] 9663 9664 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of 9665 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag 9666 variable as an indication that a ClientHello message has been 9667 received. As the flag value will be lost between multiple 9668 invocations of ssl3_accept when using non-blocking I/O, the 9669 function may not be aware that a handshake has actually taken 9670 place, thus preventing a new session from being added to the 9671 session cache. 9672 9673 To avoid this problem, we now set s->new_session to 2 instead of 9674 using a local variable. 9675 [Lutz Jaenicke, Bodo Moeller] 9676 9677 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c) 9678 if the SSL_R_LENGTH_MISMATCH error is detected. 9679 [Geoff Thorpe, Bodo Moeller] 9680 9681 *) New 'shared_ldflag' column in Configure platform table. 9682 [Richard Levitte] 9683 9684 *) Fix EVP_CIPHER_mode macro. 9685 ["Dan S. Camper" <dan@bti.net>] 9686 9687 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown 9688 type, we must throw them away by setting rr->length to 0. 9689 [D P Chang <dpc@qualys.com>] 9690 9691 Changes between 0.9.6b and 0.9.6c [21 dec 2001] 9692 9693 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl 9694 <Dominikus.Scherkl@biodata.com>. (The previous implementation 9695 worked incorrectly for those cases where range = 10..._2 and 9696 3*range is two bits longer than range.) 9697 [Bodo Moeller] 9698 9699 *) Only add signing time to PKCS7 structures if it is not already 9700 present. 9701 [Steve Henson] 9702 9703 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce", 9704 OBJ_ld_ce should be OBJ_id_ce. 9705 Also some ip-pda OIDs in crypto/objects/objects.txt were 9706 incorrect (cf. RFC 3039). 9707 [Matt Cooper, Frederic Giudicelli, Bodo Moeller] 9708 9709 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid() 9710 returns early because it has nothing to do. 9711 [Andy Schneider <andy.schneider@bjss.co.uk>] 9712 9713 *) [In 0.9.6c-engine release:] 9714 Fix mutex callback return values in crypto/engine/hw_ncipher.c. 9715 [Andy Schneider <andy.schneider@bjss.co.uk>] 9716 9717 *) [In 0.9.6c-engine release:] 9718 Add support for Cryptographic Appliance's keyserver technology. 9719 (Use engine 'keyclient') 9720 [Cryptographic Appliances and Geoff Thorpe] 9721 9722 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89' 9723 is called via tools/c89.sh because arguments have to be 9724 rearranged (all '-L' options must appear before the first object 9725 modules). 9726 [Richard Shapiro <rshapiro@abinitio.com>] 9727 9728 *) [In 0.9.6c-engine release:] 9729 Add support for Broadcom crypto accelerator cards, backported 9730 from 0.9.7. 9731 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox] 9732 9733 *) [In 0.9.6c-engine release:] 9734 Add support for SureWare crypto accelerator cards from 9735 Baltimore Technologies. (Use engine 'sureware') 9736 [Baltimore Technologies and Mark Cox] 9737 9738 *) [In 0.9.6c-engine release:] 9739 Add support for crypto accelerator cards from Accelerated 9740 Encryption Processing, www.aep.ie. (Use engine 'aep') 9741 [AEP Inc. and Mark Cox] 9742 9743 *) Add a configuration entry for gcc on UnixWare. 9744 [Gary Benson <gbenson@redhat.com>] 9745 9746 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake 9747 messages are stored in a single piece (fixed-length part and 9748 variable-length part combined) and fix various bugs found on the way. 9749 [Bodo Moeller] 9750 9751 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname() 9752 instead. BIO_gethostbyname() does not know what timeouts are 9753 appropriate, so entries would stay in cache even when they have 9754 become invalid. 9755 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com> 9756 9757 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when 9758 faced with a pathologically small ClientHello fragment that does 9759 not contain client_version: Instead of aborting with an error, 9760 simply choose the highest available protocol version (i.e., 9761 TLS 1.0 unless it is disabled). In practice, ClientHello 9762 messages are never sent like this, but this change gives us 9763 strictly correct behaviour at least for TLS. 9764 [Bodo Moeller] 9765 9766 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear() 9767 never resets s->method to s->ctx->method when called from within 9768 one of the SSL handshake functions. 9769 [Bodo Moeller; problem pointed out by Niko Baric] 9770 9771 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert 9772 (sent using the client's version number) if client_version is 9773 smaller than the protocol version in use. Also change 9774 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if 9775 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then 9776 the client will at least see that alert. 9777 [Bodo Moeller] 9778 9779 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation 9780 correctly. 9781 [Bodo Moeller] 9782 9783 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a 9784 client receives HelloRequest while in a handshake. 9785 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>] 9786 9787 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C 9788 should end in 'break', not 'goto end' which circumvents various 9789 cleanups done in state SSL_ST_OK. But session related stuff 9790 must be disabled for SSL_ST_OK in the case that we just sent a 9791 HelloRequest. 9792 9793 Also avoid some overhead by not calling ssl_init_wbio_buffer() 9794 before just sending a HelloRequest. 9795 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>] 9796 9797 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't 9798 reveal whether illegal block cipher padding was found or a MAC 9799 verification error occurred. (Neither SSLerr() codes nor alerts 9800 are directly visible to potential attackers, but the information 9801 may leak via logfiles.) 9802 9803 Similar changes are not required for the SSL 2.0 implementation 9804 because the number of padding bytes is sent in clear for SSL 2.0, 9805 and the extra bytes are just ignored. However ssl/s2_pkt.c 9806 failed to verify that the purported number of padding bytes is in 9807 the legal range. 9808 [Bodo Moeller] 9809 9810 *) Add OpenUNIX-8 support including shared libraries 9811 (Boyd Lynn Gerber <gerberb@zenez.com>). 9812 [Lutz Jaenicke] 9813 9814 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid 9815 'wristwatch attack' using huge encoding parameters (cf. 9816 James H. Manger's CRYPTO 2001 paper). Note that the 9817 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use 9818 encoding parameters and hence was not vulnerable. 9819 [Bodo Moeller] 9820 9821 *) BN_sqr() bug fix. 9822 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>] 9823 9824 *) Rabin-Miller test analyses assume uniformly distributed witnesses, 9825 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand() 9826 followed by modular reduction. 9827 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>] 9828 9829 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range() 9830 equivalent based on BN_pseudo_rand() instead of BN_rand(). 9831 [Bodo Moeller] 9832 9833 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB). 9834 This function was broken, as the check for a new client hello message 9835 to handle SGC did not allow these large messages. 9836 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.) 9837 [Lutz Jaenicke] 9838 9839 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long](). 9840 [Lutz Jaenicke] 9841 9842 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl() 9843 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>). 9844 [Lutz Jaenicke] 9845 9846 *) Rework the configuration and shared library support for Tru64 Unix. 9847 The configuration part makes use of modern compiler features and 9848 still retains old compiler behavior for those that run older versions 9849 of the OS. The shared library support part includes a variant that 9850 uses the RPATH feature, and is available through the special 9851 configuration target "alpha-cc-rpath", which will never be selected 9852 automatically. 9853 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte] 9854 9855 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message() 9856 with the same message size as in ssl3_get_certificate_request(). 9857 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest 9858 messages might inadvertently be reject as too long. 9859 [Petr Lampa <lampa@fee.vutbr.cz>] 9860 9861 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX). 9862 [Andy Polyakov] 9863 9864 *) Modified SSL library such that the verify_callback that has been set 9865 specifically for an SSL object with SSL_set_verify() is actually being 9866 used. Before the change, a verify_callback set with this function was 9867 ignored and the verify_callback() set in the SSL_CTX at the time of 9868 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced 9869 to allow the necessary settings. 9870 [Lutz Jaenicke] 9871 9872 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c 9873 explicitly to NULL, as at least on Solaris 8 this seems not always to be 9874 done automatically (in contradiction to the requirements of the C 9875 standard). This made problems when used from OpenSSH. 9876 [Lutz Jaenicke] 9877 9878 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored 9879 dh->length and always used 9880 9881 BN_rand_range(priv_key, dh->p). 9882 9883 BN_rand_range() is not necessary for Diffie-Hellman, and this 9884 specific range makes Diffie-Hellman unnecessarily inefficient if 9885 dh->length (recommended exponent length) is much smaller than the 9886 length of dh->p. We could use BN_rand_range() if the order of 9887 the subgroup was stored in the DH structure, but we only have 9888 dh->length. 9889 9890 So switch back to 9891 9892 BN_rand(priv_key, l, ...) 9893 9894 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1 9895 otherwise. 9896 [Bodo Moeller] 9897 9898 *) In 9899 9900 RSA_eay_public_encrypt 9901 RSA_eay_private_decrypt 9902 RSA_eay_private_encrypt (signing) 9903 RSA_eay_public_decrypt (signature verification) 9904 9905 (default implementations for RSA_public_encrypt, 9906 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt), 9907 always reject numbers >= n. 9908 [Bodo Moeller] 9909 9910 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2 9911 to synchronize access to 'locking_thread'. This is necessary on 9912 systems where access to 'locking_thread' (an 'unsigned long' 9913 variable) is not atomic. 9914 [Bodo Moeller] 9915 9916 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID 9917 *before* setting the 'crypto_lock_rand' flag. The previous code had 9918 a race condition if 0 is a valid thread ID. 9919 [Travis Vitek <vitek@roguewave.com>] 9920 9921 *) Add support for shared libraries under Irix. 9922 [Albert Chin-A-Young <china@thewrittenword.com>] 9923 9924 *) Add configuration option to build on Linux on both big-endian and 9925 little-endian MIPS. 9926 [Ralf Baechle <ralf@uni-koblenz.de>] 9927 9928 *) Add the possibility to create shared libraries on HP-UX. 9929 [Richard Levitte] 9930 9931 Changes between 0.9.6a and 0.9.6b [9 Jul 2001] 9932 9933 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c) 9934 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by 9935 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>: 9936 PRNG state recovery was possible based on the output of 9937 one PRNG request appropriately sized to gain knowledge on 9938 'md' followed by enough consecutive 1-byte PRNG requests 9939 to traverse all of 'state'. 9940 9941 1. When updating 'md_local' (the current thread's copy of 'md') 9942 during PRNG output generation, hash all of the previous 9943 'md_local' value, not just the half used for PRNG output. 9944 9945 2. Make the number of bytes from 'state' included into the hash 9946 independent from the number of PRNG bytes requested. 9947 9948 The first measure alone would be sufficient to avoid 9949 Markku-Juhani's attack. (Actually it had never occurred 9950 to me that the half of 'md_local' used for chaining was the 9951 half from which PRNG output bytes were taken -- I had always 9952 assumed that the secret half would be used.) The second 9953 measure makes sure that additional data from 'state' is never 9954 mixed into 'md_local' in small portions; this heuristically 9955 further strengthens the PRNG. 9956 [Bodo Moeller] 9957 9958 *) Fix crypto/bn/asm/mips3.s. 9959 [Andy Polyakov] 9960 9961 *) When only the key is given to "enc", the IV is undefined. Print out 9962 an error message in this case. 9963 [Lutz Jaenicke] 9964 9965 *) Handle special case when X509_NAME is empty in X509 printing routines. 9966 [Steve Henson] 9967 9968 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are 9969 positive and less than q. 9970 [Bodo Moeller] 9971 9972 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is 9973 used: it isn't thread safe and the add_lock_callback should handle 9974 that itself. 9975 [Paul Rose <Paul.Rose@bridge.com>] 9976 9977 *) Verify that incoming data obeys the block size in 9978 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c). 9979 [Bodo Moeller] 9980 9981 *) Fix OAEP check. 9982 [Ulf Möller, Bodo Möller] 9983 9984 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5 9985 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5 9986 when fixing the server behaviour for backwards-compatible 'client 9987 hello' messages. (Note that the attack is impractical against 9988 SSL 3.0 and TLS 1.0 anyway because length and version checking 9989 means that the probability of guessing a valid ciphertext is 9990 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98 9991 paper.) 9992 9993 Before 0.9.5, the countermeasure (hide the error by generating a 9994 random 'decryption result') did not work properly because 9995 ERR_clear_error() was missing, meaning that SSL_get_error() would 9996 detect the supposedly ignored error. 9997 9998 Both problems are now fixed. 9999 [Bodo Moeller] 10000 10001 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096 10002 (previously it was 1024). 10003 [Bodo Moeller] 10004 10005 *) Fix for compatibility mode trust settings: ignore trust settings 10006 unless some valid trust or reject settings are present. 10007 [Steve Henson] 10008 10009 *) Fix for blowfish EVP: its a variable length cipher. 10010 [Steve Henson] 10011 10012 *) Fix various bugs related to DSA S/MIME verification. Handle missing 10013 parameters in DSA public key structures and return an error in the 10014 DSA routines if parameters are absent. 10015 [Steve Henson] 10016 10017 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd" 10018 in the current directory if neither $RANDFILE nor $HOME was set. 10019 RAND_file_name() in 0.9.6a returned NULL in this case. This has 10020 caused some confusion to Windows users who haven't defined $HOME. 10021 Thus RAND_file_name() is changed again: e_os.h can define a 10022 DEFAULT_HOME, which will be used if $HOME is not set. 10023 For Windows, we use "C:"; on other platforms, we still require 10024 environment variables. 10025 10026 *) Move 'if (!initialized) RAND_poll()' into regions protected by 10027 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids 10028 having multiple threads call RAND_poll() concurrently. 10029 [Bodo Moeller] 10030 10031 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a 10032 combination of a flag and a thread ID variable. 10033 Otherwise while one thread is in ssleay_rand_bytes (which sets the 10034 flag), *other* threads can enter ssleay_add_bytes without obeying 10035 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock 10036 that they do not hold after the first thread unsets add_do_not_lock). 10037 [Bodo Moeller] 10038 10039 *) Change bctest again: '-x' expressions are not available in all 10040 versions of 'test'. 10041 [Bodo Moeller] 10042 10043 Changes between 0.9.6 and 0.9.6a [5 Apr 2001] 10044 10045 *) Fix a couple of memory leaks in PKCS7_dataDecode() 10046 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>] 10047 10048 *) Change Configure and Makefiles to provide EXE_EXT, which will contain 10049 the default extension for executables, if any. Also, make the perl 10050 scripts that use symlink() to test if it really exists and use "cp" 10051 if it doesn't. All this made OpenSSL compilable and installable in 10052 CygWin. 10053 [Richard Levitte] 10054 10055 *) Fix for asn1_GetSequence() for indefinite length constructed data. 10056 If SEQUENCE is length is indefinite just set c->slen to the total 10057 amount of data available. 10058 [Steve Henson, reported by shige@FreeBSD.org] 10059 [This change does not apply to 0.9.7.] 10060 10061 *) Change bctest to avoid here-documents inside command substitution 10062 (workaround for FreeBSD /bin/sh bug). 10063 For compatibility with Ultrix, avoid shell functions (introduced 10064 in the bctest version that searches along $PATH). 10065 [Bodo Moeller] 10066 10067 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes 10068 with des_encrypt() defined on some operating systems, like Solaris 10069 and UnixWare. 10070 [Richard Levitte] 10071 10072 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton: 10073 On the Importance of Eliminating Errors in Cryptographic 10074 Computations, J. Cryptology 14 (2001) 2, 101-119, 10075 http://theory.stanford.edu/~dabo/papers/faults.ps.gz). 10076 [Ulf Moeller] 10077 10078 *) MIPS assembler BIGNUM division bug fix. 10079 [Andy Polyakov] 10080 10081 *) Disabled incorrect Alpha assembler code. 10082 [Richard Levitte] 10083 10084 *) Fix PKCS#7 decode routines so they correctly update the length 10085 after reading an EOC for the EXPLICIT tag. 10086 [Steve Henson] 10087 [This change does not apply to 0.9.7.] 10088 10089 *) Fix bug in PKCS#12 key generation routines. This was triggered 10090 if a 3DES key was generated with a 0 initial byte. Include 10091 PKCS12_BROKEN_KEYGEN compilation option to retain the old 10092 (but broken) behaviour. 10093 [Steve Henson] 10094 10095 *) Enhance bctest to search for a working bc along $PATH and print 10096 it when found. 10097 [Tim Rice <tim@multitalents.net> via Richard Levitte] 10098 10099 *) Fix memory leaks in err.c: free err_data string if necessary; 10100 don't write to the wrong index in ERR_set_error_data. 10101 [Bodo Moeller] 10102 10103 *) Implement ssl23_peek (analogous to ssl23_read), which previously 10104 did not exist. 10105 [Bodo Moeller] 10106 10107 *) Replace rdtsc with _emit statements for VC++ version 5. 10108 [Jeremy Cooper <jeremy@baymoo.org>] 10109 10110 *) Make it possible to reuse SSLv2 sessions. 10111 [Richard Levitte] 10112 10113 *) In copy_email() check for >= 0 as a return value for 10114 X509_NAME_get_index_by_NID() since 0 is a valid index. 10115 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>] 10116 10117 *) Avoid coredump with unsupported or invalid public keys by checking if 10118 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when 10119 PKCS7_verify() fails with non detached data. 10120 [Steve Henson] 10121 10122 *) Don't use getenv in library functions when run as setuid/setgid. 10123 New function OPENSSL_issetugid(). 10124 [Ulf Moeller] 10125 10126 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c) 10127 due to incorrect handling of multi-threading: 10128 10129 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl(). 10130 10131 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on(). 10132 10133 3. Count how many times MemCheck_off() has been called so that 10134 nested use can be treated correctly. This also avoids 10135 inband-signalling in the previous code (which relied on the 10136 assumption that thread ID 0 is impossible). 10137 [Bodo Moeller] 10138 10139 *) Add "-rand" option also to s_client and s_server. 10140 [Lutz Jaenicke] 10141 10142 *) Fix CPU detection on Irix 6.x. 10143 [Kurt Hockenbury <khockenb@stevens-tech.edu> and 10144 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] 10145 10146 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME 10147 was empty. 10148 [Steve Henson] 10149 [This change does not apply to 0.9.7.] 10150 10151 *) Use the cached encoding of an X509_NAME structure rather than 10152 copying it. This is apparently the reason for the libsafe "errors" 10153 but the code is actually correct. 10154 [Steve Henson] 10155 10156 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent 10157 Bleichenbacher's DSA attack. 10158 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits 10159 to be set and top=0 forces the highest bit to be set; top=-1 is new 10160 and leaves the highest bit random. 10161 [Ulf Moeller, Bodo Moeller] 10162 10163 *) In the NCONF_...-based implementations for CONF_... queries 10164 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using 10165 a temporary CONF structure with the data component set to NULL 10166 (which gives segmentation faults in lh_retrieve). 10167 Instead, use NULL for the CONF pointer in CONF_get_string and 10168 CONF_get_number (which may use environment variables) and directly 10169 return NULL from CONF_get_section. 10170 [Bodo Moeller] 10171 10172 *) Fix potential buffer overrun for EBCDIC. 10173 [Ulf Moeller] 10174 10175 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign 10176 keyUsage if basicConstraints absent for a CA. 10177 [Steve Henson] 10178 10179 *) Make SMIME_write_PKCS7() write mail header values with a format that 10180 is more generally accepted (no spaces before the semicolon), since 10181 some programs can't parse those values properly otherwise. Also make 10182 sure BIO's that break lines after each write do not create invalid 10183 headers. 10184 [Richard Levitte] 10185 10186 *) Make the CRL encoding routines work with empty SEQUENCE OF. The 10187 macros previously used would not encode an empty SEQUENCE OF 10188 and break the signature. 10189 [Steve Henson] 10190 [This change does not apply to 0.9.7.] 10191 10192 *) Zero the premaster secret after deriving the master secret in 10193 DH ciphersuites. 10194 [Steve Henson] 10195 10196 *) Add some EVP_add_digest_alias registrations (as found in 10197 OpenSSL_add_all_digests()) to SSL_library_init() 10198 aka OpenSSL_add_ssl_algorithms(). This provides improved 10199 compatibility with peers using X.509 certificates 10200 with unconventional AlgorithmIdentifier OIDs. 10201 [Bodo Moeller] 10202 10203 *) Fix for Irix with NO_ASM. 10204 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] 10205 10206 *) ./config script fixes. 10207 [Ulf Moeller, Richard Levitte] 10208 10209 *) Fix 'openssl passwd -1'. 10210 [Bodo Moeller] 10211 10212 *) Change PKCS12_key_gen_asc() so it can cope with non null 10213 terminated strings whose length is passed in the passlen 10214 parameter, for example from PEM callbacks. This was done 10215 by adding an extra length parameter to asc2uni(). 10216 [Steve Henson, reported by <oddissey@samsung.co.kr>] 10217 10218 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn 10219 call failed, free the DSA structure. 10220 [Bodo Moeller] 10221 10222 *) Fix to uni2asc() to cope with zero length Unicode strings. 10223 These are present in some PKCS#12 files. 10224 [Steve Henson] 10225 10226 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c). 10227 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits 10228 when writing a 32767 byte record. 10229 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>] 10230 10231 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c), 10232 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}. 10233 10234 (RSA objects have a reference count access to which is protected 10235 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c], 10236 so they are meant to be shared between threads.) 10237 [Bodo Moeller, Geoff Thorpe; original patch submitted by 10238 "Reddie, Steven" <Steven.Reddie@ca.com>] 10239 10240 *) Fix a deadlock in CRYPTO_mem_leaks(). 10241 [Bodo Moeller] 10242 10243 *) Use better test patterns in bntest. 10244 [Ulf Möller] 10245 10246 *) rand_win.c fix for Borland C. 10247 [Ulf Möller] 10248 10249 *) BN_rshift bugfix for n == 0. 10250 [Bodo Moeller] 10251 10252 *) Add a 'bctest' script that checks for some known 'bc' bugs 10253 so that 'make test' does not abort just because 'bc' is broken. 10254 [Bodo Moeller] 10255 10256 *) Store verify_result within SSL_SESSION also for client side to 10257 avoid potential security hole. (Re-used sessions on the client side 10258 always resulted in verify_result==X509_V_OK, not using the original 10259 result of the server certificate verification.) 10260 [Lutz Jaenicke] 10261 10262 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type 10263 SSL3_RT_APPLICATION_DATA, return 0. 10264 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true. 10265 [Bodo Moeller] 10266 10267 *) Fix SSL_peek: 10268 Both ssl2_peek and ssl3_peek, which were totally broken in earlier 10269 releases, have been re-implemented by renaming the previous 10270 implementations of ssl2_read and ssl3_read to ssl2_read_internal 10271 and ssl3_read_internal, respectively, and adding 'peek' parameters 10272 to them. The new ssl[23]_{read,peek} functions are calls to 10273 ssl[23]_read_internal with the 'peek' flag set appropriately. 10274 A 'peek' parameter has also been added to ssl3_read_bytes, which 10275 does the actual work for ssl3_read_internal. 10276 [Bodo Moeller] 10277 10278 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling 10279 the method-specific "init()" handler. Also clean up ex_data after 10280 calling the method-specific "finish()" handler. Previously, this was 10281 happening the other way round. 10282 [Geoff Thorpe] 10283 10284 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16. 10285 The previous value, 12, was not always sufficient for BN_mod_exp(). 10286 [Bodo Moeller] 10287 10288 *) Make sure that shared libraries get the internal name engine with 10289 the full version number and not just 0. This should mark the 10290 shared libraries as not backward compatible. Of course, this should 10291 be changed again when we can guarantee backward binary compatibility. 10292 [Richard Levitte] 10293 10294 *) Fix typo in get_cert_by_subject() in by_dir.c 10295 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>] 10296 10297 *) Rework the system to generate shared libraries: 10298 10299 - Make note of the expected extension for the shared libraries and 10300 if there is a need for symbolic links from for example libcrypto.so.0 10301 to libcrypto.so.0.9.7. There is extended info in Configure for 10302 that. 10303 10304 - Make as few rebuilds of the shared libraries as possible. 10305 10306 - Still avoid linking the OpenSSL programs with the shared libraries. 10307 10308 - When installing, install the shared libraries separately from the 10309 static ones. 10310 [Richard Levitte] 10311 10312 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument. 10313 10314 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new 10315 and not in SSL_clear because the latter is also used by the 10316 accept/connect functions; previously, the settings made by 10317 SSL_set_read_ahead would be lost during the handshake. 10318 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>] 10319 10320 *) Correct util/mkdef.pl to be selective about disabled algorithms. 10321 Previously, it would create entries for disabled algorithms no 10322 matter what. 10323 [Richard Levitte] 10324 10325 *) Added several new manual pages for SSL_* function. 10326 [Lutz Jaenicke] 10327 10328 Changes between 0.9.5a and 0.9.6 [24 Sep 2000] 10329 10330 *) In ssl23_get_client_hello, generate an error message when faced 10331 with an initial SSL 3.0/TLS record that is too small to contain the 10332 first two bytes of the ClientHello message, i.e. client_version. 10333 (Note that this is a pathologic case that probably has never happened 10334 in real life.) The previous approach was to use the version number 10335 from the record header as a substitute; but our protocol choice 10336 should not depend on that one because it is not authenticated 10337 by the Finished messages. 10338 [Bodo Moeller] 10339 10340 *) More robust randomness gathering functions for Windows. 10341 [Jeffrey Altman <jaltman@columbia.edu>] 10342 10343 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is 10344 not set then we don't setup the error code for issuer check errors 10345 to avoid possibly overwriting other errors which the callback does 10346 handle. If an application does set the flag then we assume it knows 10347 what it is doing and can handle the new informational codes 10348 appropriately. 10349 [Steve Henson] 10350 10351 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for 10352 a general "ANY" type, as such it should be able to decode anything 10353 including tagged types. However it didn't check the class so it would 10354 wrongly interpret tagged types in the same way as their universal 10355 counterpart and unknown types were just rejected. Changed so that the 10356 tagged and unknown types are handled in the same way as a SEQUENCE: 10357 that is the encoding is stored intact. There is also a new type 10358 "V_ASN1_OTHER" which is used when the class is not universal, in this 10359 case we have no idea what the actual type is so we just lump them all 10360 together. 10361 [Steve Henson] 10362 10363 *) On VMS, stdout may very well lead to a file that is written to 10364 in a record-oriented fashion. That means that every write() will 10365 write a separate record, which will be read separately by the 10366 programs trying to read from it. This can be very confusing. 10367 10368 The solution is to put a BIO filter in the way that will buffer 10369 text until a linefeed is reached, and then write everything a 10370 line at a time, so every record written will be an actual line, 10371 not chunks of lines and not (usually doesn't happen, but I've 10372 seen it once) several lines in one record. BIO_f_linebuffer() is 10373 the answer. 10374 10375 Currently, it's a VMS-only method, because that's where it has 10376 been tested well enough. 10377 [Richard Levitte] 10378 10379 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery, 10380 it can return incorrect results. 10381 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a, 10382 but it was in 0.9.6-beta[12].) 10383 [Bodo Moeller] 10384 10385 *) Disable the check for content being present when verifying detached 10386 signatures in pk7_smime.c. Some versions of Netscape (wrongly) 10387 include zero length content when signing messages. 10388 [Steve Henson] 10389 10390 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR 10391 BIO_ctrl (for BIO pairs). 10392 [Bodo Möller] 10393 10394 *) Add DSO method for VMS. 10395 [Richard Levitte] 10396 10397 *) Bug fix: Montgomery multiplication could produce results with the 10398 wrong sign. 10399 [Ulf Möller] 10400 10401 *) Add RPM specification openssl.spec and modify it to build three 10402 packages. The default package contains applications, application 10403 documentation and run-time libraries. The devel package contains 10404 include files, static libraries and function documentation. The 10405 doc package contains the contents of the doc directory. The original 10406 openssl.spec was provided by Damien Miller <djm@mindrot.org>. 10407 [Richard Levitte] 10408 10409 *) Add a large number of documentation files for many SSL routines. 10410 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] 10411 10412 *) Add a configuration entry for Sony News 4. 10413 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>] 10414 10415 *) Don't set the two most significant bits to one when generating a 10416 random number < q in the DSA library. 10417 [Ulf Möller] 10418 10419 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default 10420 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if 10421 the underlying transport is blocking) if a handshake took place. 10422 (The default behaviour is needed by applications such as s_client 10423 and s_server that use select() to determine when to use SSL_read; 10424 but for applications that know in advance when to expect data, it 10425 just makes things more complicated.) 10426 [Bodo Moeller] 10427 10428 *) Add RAND_egd_bytes(), which gives control over the number of bytes read 10429 from EGD. 10430 [Ben Laurie] 10431 10432 *) Add a few more EBCDIC conditionals that make `req' and `x509' 10433 work better on such systems. 10434 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 10435 10436 *) Add two demo programs for PKCS12_parse() and PKCS12_create(). 10437 Update PKCS12_parse() so it copies the friendlyName and the 10438 keyid to the certificates aux info. 10439 [Steve Henson] 10440 10441 *) Fix bug in PKCS7_verify() which caused an infinite loop 10442 if there was more than one signature. 10443 [Sven Uszpelkat <su@celocom.de>] 10444 10445 *) Major change in util/mkdef.pl to include extra information 10446 about each symbol, as well as presenting variables as well 10447 as functions. This change means that there's n more need 10448 to rebuild the .num files when some algorithms are excluded. 10449 [Richard Levitte] 10450 10451 *) Allow the verify time to be set by an application, 10452 rather than always using the current time. 10453 [Steve Henson] 10454 10455 *) Phase 2 verify code reorganisation. The certificate 10456 verify code now looks up an issuer certificate by a 10457 number of criteria: subject name, authority key id 10458 and key usage. It also verifies self signed certificates 10459 by the same criteria. The main comparison function is 10460 X509_check_issued() which performs these checks. 10461 10462 Lot of changes were necessary in order to support this 10463 without completely rewriting the lookup code. 10464 10465 Authority and subject key identifier are now cached. 10466 10467 The LHASH 'certs' is X509_STORE has now been replaced 10468 by a STACK_OF(X509_OBJECT). This is mainly because an 10469 LHASH can't store or retrieve multiple objects with 10470 the same hash value. 10471 10472 As a result various functions (which were all internal 10473 use only) have changed to handle the new X509_STORE 10474 structure. This will break anything that messed round 10475 with X509_STORE internally. 10476 10477 The functions X509_STORE_add_cert() now checks for an 10478 exact match, rather than just subject name. 10479 10480 The X509_STORE API doesn't directly support the retrieval 10481 of multiple certificates matching a given criteria, however 10482 this can be worked round by performing a lookup first 10483 (which will fill the cache with candidate certificates) 10484 and then examining the cache for matches. This is probably 10485 the best we can do without throwing out X509_LOOKUP 10486 entirely (maybe later...). 10487 10488 The X509_VERIFY_CTX structure has been enhanced considerably. 10489 10490 All certificate lookup operations now go via a get_issuer() 10491 callback. Although this currently uses an X509_STORE it 10492 can be replaced by custom lookups. This is a simple way 10493 to bypass the X509_STORE hackery necessary to make this 10494 work and makes it possible to use more efficient techniques 10495 in future. A very simple version which uses a simple 10496 STACK for its trusted certificate store is also provided 10497 using X509_STORE_CTX_trusted_stack(). 10498 10499 The verify_cb() and verify() callbacks now have equivalents 10500 in the X509_STORE_CTX structure. 10501 10502 X509_STORE_CTX also has a 'flags' field which can be used 10503 to customise the verify behaviour. 10504 [Steve Henson] 10505 10506 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which 10507 excludes S/MIME capabilities. 10508 [Steve Henson] 10509 10510 *) When a certificate request is read in keep a copy of the 10511 original encoding of the signed data and use it when outputting 10512 again. Signatures then use the original encoding rather than 10513 a decoded, encoded version which may cause problems if the 10514 request is improperly encoded. 10515 [Steve Henson] 10516 10517 *) For consistency with other BIO_puts implementations, call 10518 buffer_write(b, ...) directly in buffer_puts instead of calling 10519 BIO_write(b, ...). 10520 10521 In BIO_puts, increment b->num_write as in BIO_write. 10522 [Peter.Sylvester@EdelWeb.fr] 10523 10524 *) Fix BN_mul_word for the case where the word is 0. (We have to use 10525 BN_zero, we may not return a BIGNUM with an array consisting of 10526 words set to zero.) 10527 [Bodo Moeller] 10528 10529 *) Avoid calling abort() from within the library when problems are 10530 detected, except if preprocessor symbols have been defined 10531 (such as REF_CHECK, BN_DEBUG etc.). 10532 [Bodo Moeller] 10533 10534 *) New openssl application 'rsautl'. This utility can be 10535 used for low level RSA operations. DER public key 10536 BIO/fp routines also added. 10537 [Steve Henson] 10538 10539 *) New Configure entry and patches for compiling on QNX 4. 10540 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>] 10541 10542 *) A demo state-machine implementation was sponsored by 10543 Nuron (http://www.nuron.com/) and is now available in 10544 demos/state_machine. 10545 [Ben Laurie] 10546 10547 *) New options added to the 'dgst' utility for signature 10548 generation and verification. 10549 [Steve Henson] 10550 10551 *) Unrecognized PKCS#7 content types are now handled via a 10552 catch all ASN1_TYPE structure. This allows unsupported 10553 types to be stored as a "blob" and an application can 10554 encode and decode it manually. 10555 [Steve Henson] 10556 10557 *) Fix various signed/unsigned issues to make a_strex.c 10558 compile under VC++. 10559 [Oscar Jacobsson <oscar.jacobsson@celocom.com>] 10560 10561 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct 10562 length if passed a buffer. ASN1_INTEGER_to_BN failed 10563 if passed a NULL BN and its argument was negative. 10564 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>] 10565 10566 *) Modification to PKCS#7 encoding routines to output definite 10567 length encoding. Since currently the whole structures are in 10568 memory there's not real point in using indefinite length 10569 constructed encoding. However if OpenSSL is compiled with 10570 the flag PKCS7_INDEFINITE_ENCODING the old form is used. 10571 [Steve Henson] 10572 10573 *) Added BIO_vprintf() and BIO_vsnprintf(). 10574 [Richard Levitte] 10575 10576 *) Added more prefixes to parse for in the strings written 10577 through a logging bio, to cover all the levels that are available 10578 through syslog. The prefixes are now: 10579 10580 PANIC, EMERG, EMR => LOG_EMERG 10581 ALERT, ALR => LOG_ALERT 10582 CRIT, CRI => LOG_CRIT 10583 ERROR, ERR => LOG_ERR 10584 WARNING, WARN, WAR => LOG_WARNING 10585 NOTICE, NOTE, NOT => LOG_NOTICE 10586 INFO, INF => LOG_INFO 10587 DEBUG, DBG => LOG_DEBUG 10588 10589 and as before, if none of those prefixes are present at the 10590 beginning of the string, LOG_ERR is chosen. 10591 10592 On Win32, the LOG_* levels are mapped according to this: 10593 10594 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE 10595 LOG_WARNING => EVENTLOG_WARNING_TYPE 10596 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE 10597 10598 [Richard Levitte] 10599 10600 *) Made it possible to reconfigure with just the configuration 10601 argument "reconf" or "reconfigure". The command line arguments 10602 are stored in Makefile.ssl in the variable CONFIGURE_ARGS, 10603 and are retrieved from there when reconfiguring. 10604 [Richard Levitte] 10605 10606 *) MD4 implemented. 10607 [Assar Westerlund <assar@sics.se>, Richard Levitte] 10608 10609 *) Add the arguments -CAfile and -CApath to the pkcs12 utility. 10610 [Richard Levitte] 10611 10612 *) The obj_dat.pl script was messing up the sorting of object 10613 names. The reason was that it compared the quoted version 10614 of strings as a result "OCSP" > "OCSP Signing" because 10615 " > SPACE. Changed script to store unquoted versions of 10616 names and add quotes on output. It was also omitting some 10617 names from the lookup table if they were given a default 10618 value (that is if SN is missing it is given the same 10619 value as LN and vice versa), these are now added on the 10620 grounds that if an object has a name we should be able to 10621 look it up. Finally added warning output when duplicate 10622 short or long names are found. 10623 [Steve Henson] 10624 10625 *) Changes needed for Tandem NSK. 10626 [Scott Uroff <scott@xypro.com>] 10627 10628 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in 10629 RSA_padding_check_SSLv23(), special padding was never detected 10630 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol 10631 version rollback attacks was not effective. 10632 10633 In s23_clnt.c, don't use special rollback-attack detection padding 10634 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the 10635 client; similarly, in s23_srvr.c, don't do the rollback check if 10636 SSL 2.0 is the only protocol enabled in the server. 10637 [Bodo Moeller] 10638 10639 *) Make it possible to get hexdumps of unprintable data with 'openssl 10640 asn1parse'. By implication, the functions ASN1_parse_dump() and 10641 BIO_dump_indent() are added. 10642 [Richard Levitte] 10643 10644 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex() 10645 these print out strings and name structures based on various 10646 flags including RFC2253 support and proper handling of 10647 multibyte characters. Added options to the 'x509' utility 10648 to allow the various flags to be set. 10649 [Steve Henson] 10650 10651 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME. 10652 Also change the functions X509_cmp_current_time() and 10653 X509_gmtime_adj() work with an ASN1_TIME structure, 10654 this will enable certificates using GeneralizedTime in validity 10655 dates to be checked. 10656 [Steve Henson] 10657 10658 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid 10659 negative public key encodings) on by default, 10660 NO_NEG_PUBKEY_BUG can be set to disable it. 10661 [Steve Henson] 10662 10663 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT 10664 content octets. An i2c_ASN1_OBJECT is unnecessary because 10665 the encoding can be trivially obtained from the structure. 10666 [Steve Henson] 10667 10668 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock), 10669 not read locks (CRYPTO_r_[un]lock). 10670 [Bodo Moeller] 10671 10672 *) A first attempt at creating official support for shared 10673 libraries through configuration. I've kept it so the 10674 default is static libraries only, and the OpenSSL programs 10675 are always statically linked for now, but there are 10676 preparations for dynamic linking in place. 10677 This has been tested on Linux and Tru64. 10678 [Richard Levitte] 10679 10680 *) Randomness polling function for Win9x, as described in: 10681 Peter Gutmann, Software Generation of Practically Strong 10682 Random Numbers. 10683 [Ulf Möller] 10684 10685 *) Fix so PRNG is seeded in req if using an already existing 10686 DSA key. 10687 [Steve Henson] 10688 10689 *) New options to smime application. -inform and -outform 10690 allow alternative formats for the S/MIME message including 10691 PEM and DER. The -content option allows the content to be 10692 specified separately. This should allow things like Netscape 10693 form signing output easier to verify. 10694 [Steve Henson] 10695 10696 *) Fix the ASN1 encoding of tags using the 'long form'. 10697 [Steve Henson] 10698 10699 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT 10700 STRING types. These convert content octets to and from the 10701 underlying type. The actual tag and length octets are 10702 already assumed to have been read in and checked. These 10703 are needed because all other string types have virtually 10704 identical handling apart from the tag. By having versions 10705 of the ASN1 functions that just operate on content octets 10706 IMPLICIT tagging can be handled properly. It also allows 10707 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED 10708 and ASN1_INTEGER are identical apart from the tag. 10709 [Steve Henson] 10710 10711 *) Change the handling of OID objects as follows: 10712 10713 - New object identifiers are inserted in objects.txt, following 10714 the syntax given in objects.README. 10715 - objects.pl is used to process obj_mac.num and create a new 10716 obj_mac.h. 10717 - obj_dat.pl is used to create a new obj_dat.h, using the data in 10718 obj_mac.h. 10719 10720 This is currently kind of a hack, and the perl code in objects.pl 10721 isn't very elegant, but it works as I intended. The simplest way 10722 to check that it worked correctly is to look in obj_dat.h and 10723 check the array nid_objs and make sure the objects haven't moved 10724 around (this is important!). Additions are OK, as well as 10725 consistent name changes. 10726 [Richard Levitte] 10727 10728 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1'). 10729 [Bodo Moeller] 10730 10731 *) Addition of the command line parameter '-rand file' to 'openssl req'. 10732 The given file adds to whatever has already been seeded into the 10733 random pool through the RANDFILE configuration file option or 10734 environment variable, or the default random state file. 10735 [Richard Levitte] 10736 10737 *) mkstack.pl now sorts each macro group into lexical order. 10738 Previously the output order depended on the order the files 10739 appeared in the directory, resulting in needless rewriting 10740 of safestack.h . 10741 [Steve Henson] 10742 10743 *) Patches to make OpenSSL compile under Win32 again. Mostly 10744 work arounds for the VC++ problem that it treats func() as 10745 func(void). Also stripped out the parts of mkdef.pl that 10746 added extra typesafe functions: these no longer exist. 10747 [Steve Henson] 10748 10749 *) Reorganisation of the stack code. The macros are now all 10750 collected in safestack.h . Each macro is defined in terms of 10751 a "stack macro" of the form SKM_<name>(type, a, b). The 10752 DEBUG_SAFESTACK is now handled in terms of function casts, 10753 this has the advantage of retaining type safety without the 10754 use of additional functions. If DEBUG_SAFESTACK is not defined 10755 then the non typesafe macros are used instead. Also modified the 10756 mkstack.pl script to handle the new form. Needs testing to see 10757 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK 10758 the default if no major problems. Similar behaviour for ASN1_SET_OF 10759 and PKCS12_STACK_OF. 10760 [Steve Henson] 10761 10762 *) When some versions of IIS use the 'NET' form of private key the 10763 key derivation algorithm is different. Normally MD5(password) is 10764 used as a 128 bit RC4 key. In the modified case 10765 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some 10766 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same 10767 as the old Netscape_RSA functions except they have an additional 10768 'sgckey' parameter which uses the modified algorithm. Also added 10769 an -sgckey command line option to the rsa utility. Thanks to 10770 Adrian Peck <bertie@ncipher.com> for posting details of the modified 10771 algorithm to openssl-dev. 10772 [Steve Henson] 10773 10774 *) The evp_local.h macros were using 'c.##kname' which resulted in 10775 invalid expansion on some systems (SCO 5.0.5 for example). 10776 Corrected to 'c.kname'. 10777 [Phillip Porch <root@theporch.com>] 10778 10779 *) New X509_get1_email() and X509_REQ_get1_email() functions that return 10780 a STACK of email addresses from a certificate or request, these look 10781 in the subject name and the subject alternative name extensions and 10782 omit any duplicate addresses. 10783 [Steve Henson] 10784 10785 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows. 10786 This makes DSA verification about 2 % faster. 10787 [Bodo Moeller] 10788 10789 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5 10790 (meaning that now 2^5 values will be precomputed, which is only 4 KB 10791 plus overhead for 1024 bit moduli). 10792 This makes exponentiations about 0.5 % faster for 1024 bit 10793 exponents (as measured by "openssl speed rsa2048"). 10794 [Bodo Moeller] 10795 10796 *) Rename memory handling macros to avoid conflicts with other 10797 software: 10798 Malloc => OPENSSL_malloc 10799 Malloc_locked => OPENSSL_malloc_locked 10800 Realloc => OPENSSL_realloc 10801 Free => OPENSSL_free 10802 [Richard Levitte] 10803 10804 *) New function BN_mod_exp_mont_word for small bases (roughly 15% 10805 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange). 10806 [Bodo Moeller] 10807 10808 *) CygWin32 support. 10809 [John Jarvie <jjarvie@newsguy.com>] 10810 10811 *) The type-safe stack code has been rejigged. It is now only compiled 10812 in when OpenSSL is configured with the DEBUG_SAFESTACK option and 10813 by default all type-specific stack functions are "#define"d back to 10814 standard stack functions. This results in more streamlined output 10815 but retains the type-safety checking possibilities of the original 10816 approach. 10817 [Geoff Thorpe] 10818 10819 *) The STACK code has been cleaned up, and certain type declarations 10820 that didn't make a lot of sense have been brought in line. This has 10821 also involved a cleanup of sorts in safestack.h to more correctly 10822 map type-safe stack functions onto their plain stack counterparts. 10823 This work has also resulted in a variety of "const"ifications of 10824 lots of the code, especially "_cmp" operations which should normally 10825 be prototyped with "const" parameters anyway. 10826 [Geoff Thorpe] 10827 10828 *) When generating bytes for the first time in md_rand.c, 'stir the pool' 10829 by seeding with STATE_SIZE dummy bytes (with zero entropy count). 10830 (The PRNG state consists of two parts, the large pool 'state' and 'md', 10831 where all of 'md' is used each time the PRNG is used, but 'state' 10832 is used only indexed by a cyclic counter. As entropy may not be 10833 well distributed from the beginning, 'md' is important as a 10834 chaining variable. However, the output function chains only half 10835 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains 10836 all of 'md', and seeding with STATE_SIZE dummy bytes will result 10837 in all of 'state' being rewritten, with the new values depending 10838 on virtually all of 'md'. This overcomes the 80 bit limitation.) 10839 [Bodo Moeller] 10840 10841 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when 10842 the handshake is continued after ssl_verify_cert_chain(); 10843 otherwise, if SSL_VERIFY_NONE is set, remaining error codes 10844 can lead to 'unexplainable' connection aborts later. 10845 [Bodo Moeller; problem tracked down by Lutz Jaenicke] 10846 10847 *) Major EVP API cipher revision. 10848 Add hooks for extra EVP features. This allows various cipher 10849 parameters to be set in the EVP interface. Support added for variable 10850 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and 10851 setting of RC2 and RC5 parameters. 10852 10853 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length 10854 ciphers. 10855 10856 Remove lots of duplicated code from the EVP library. For example *every* 10857 cipher init() function handles the 'iv' in the same way according to the 10858 cipher mode. They also all do nothing if the 'key' parameter is NULL and 10859 for CFB and OFB modes they zero ctx->num. 10860 10861 New functionality allows removal of S/MIME code RC2 hack. 10862 10863 Most of the routines have the same form and so can be declared in terms 10864 of macros. 10865 10866 By shifting this to the top level EVP_CipherInit() it can be removed from 10867 all individual ciphers. If the cipher wants to handle IVs or keys 10868 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT 10869 flags. 10870 10871 Change lots of functions like EVP_EncryptUpdate() to now return a 10872 value: although software versions of the algorithms cannot fail 10873 any installed hardware versions can. 10874 [Steve Henson] 10875 10876 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if 10877 this option is set, tolerate broken clients that send the negotiated 10878 protocol version number instead of the requested protocol version 10879 number. 10880 [Bodo Moeller] 10881 10882 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag; 10883 i.e. non-zero for export ciphersuites, zero otherwise. 10884 Previous versions had this flag inverted, inconsistent with 10885 rsa_tmp_cb (..._TMP_RSA_CB). 10886 [Bodo Moeller; problem reported by Amit Chopra] 10887 10888 *) Add missing DSA library text string. Work around for some IIS 10889 key files with invalid SEQUENCE encoding. 10890 [Steve Henson] 10891 10892 *) Add a document (doc/standards.txt) that list all kinds of standards 10893 and so on that are implemented in OpenSSL. 10894 [Richard Levitte] 10895 10896 *) Enhance c_rehash script. Old version would mishandle certificates 10897 with the same subject name hash and wouldn't handle CRLs at all. 10898 Added -fingerprint option to crl utility, to support new c_rehash 10899 features. 10900 [Steve Henson] 10901 10902 *) Eliminate non-ANSI declarations in crypto.h and stack.h. 10903 [Ulf Möller] 10904 10905 *) Fix for SSL server purpose checking. Server checking was 10906 rejecting certificates which had extended key usage present 10907 but no ssl client purpose. 10908 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>] 10909 10910 *) Make PKCS#12 code work with no password. The PKCS#12 spec 10911 is a little unclear about how a blank password is handled. 10912 Since the password in encoded as a BMPString with terminating 10913 double NULL a zero length password would end up as just the 10914 double NULL. However no password at all is different and is 10915 handled differently in the PKCS#12 key generation code. NS 10916 treats a blank password as zero length. MSIE treats it as no 10917 password on export: but it will try both on import. We now do 10918 the same: PKCS12_parse() tries zero length and no password if 10919 the password is set to "" or NULL (NULL is now a valid password: 10920 it wasn't before) as does the pkcs12 application. 10921 [Steve Henson] 10922 10923 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use 10924 perror when PEM_read_bio_X509_REQ fails, the error message must 10925 be obtained from the error queue. 10926 [Bodo Moeller] 10927 10928 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing 10929 it in ERR_remove_state if appropriate, and change ERR_get_state 10930 accordingly to avoid race conditions (this is necessary because 10931 thread_hash is no longer constant once set). 10932 [Bodo Moeller] 10933 10934 *) Bugfix for linux-elf makefile.one. 10935 [Ulf Möller] 10936 10937 *) RSA_get_default_method() will now cause a default 10938 RSA_METHOD to be chosen if one doesn't exist already. 10939 Previously this was only set during a call to RSA_new() 10940 or RSA_new_method(NULL) meaning it was possible for 10941 RSA_get_default_method() to return NULL. 10942 [Geoff Thorpe] 10943 10944 *) Added native name translation to the existing DSO code 10945 that will convert (if the flag to do so is set) filenames 10946 that are sufficiently small and have no path information 10947 into a canonical native form. Eg. "blah" converted to 10948 "libblah.so" or "blah.dll" etc. 10949 [Geoff Thorpe] 10950 10951 *) New function ERR_error_string_n(e, buf, len) which is like 10952 ERR_error_string(e, buf), but writes at most 'len' bytes 10953 including the 0 terminator. For ERR_error_string_n, 'buf' 10954 may not be NULL. 10955 [Damien Miller <djm@mindrot.org>, Bodo Moeller] 10956 10957 *) CONF library reworked to become more general. A new CONF 10958 configuration file reader "class" is implemented as well as a 10959 new functions (NCONF_*, for "New CONF") to handle it. The now 10960 old CONF_* functions are still there, but are reimplemented to 10961 work in terms of the new functions. Also, a set of functions 10962 to handle the internal storage of the configuration data is 10963 provided to make it easier to write new configuration file 10964 reader "classes" (I can definitely see something reading a 10965 configuration file in XML format, for example), called _CONF_*, 10966 or "the configuration storage API"... 10967 10968 The new configuration file reading functions are: 10969 10970 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio, 10971 NCONF_get_section, NCONF_get_string, NCONF_get_numbre 10972 10973 NCONF_default, NCONF_WIN32 10974 10975 NCONF_dump_fp, NCONF_dump_bio 10976 10977 NCONF_default and NCONF_WIN32 are method (or "class") choosers, 10978 NCONF_new creates a new CONF object. This works in the same way 10979 as other interfaces in OpenSSL, like the BIO interface. 10980 NCONF_dump_* dump the internal storage of the configuration file, 10981 which is useful for debugging. All other functions take the same 10982 arguments as the old CONF_* functions with the exception of the 10983 first that must be a `CONF *' instead of a `LHASH *'. 10984 10985 To make it easier to use the new classes with the old CONF_* functions, 10986 the function CONF_set_default_method is provided. 10987 [Richard Levitte] 10988 10989 *) Add '-tls1' option to 'openssl ciphers', which was already 10990 mentioned in the documentation but had not been implemented. 10991 (This option is not yet really useful because even the additional 10992 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.) 10993 [Bodo Moeller] 10994 10995 *) Initial DSO code added into libcrypto for letting OpenSSL (and 10996 OpenSSL-based applications) load shared libraries and bind to 10997 them in a portable way. 10998 [Geoff Thorpe, with contributions from Richard Levitte] 10999 11000 Changes between 0.9.5 and 0.9.5a [1 Apr 2000] 11001 11002 *) Make sure _lrotl and _lrotr are only used with MSVC. 11003 11004 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status 11005 (the default implementation of RAND_status). 11006 11007 *) Rename openssl x509 option '-crlext', which was added in 0.9.5, 11008 to '-clrext' (= clear extensions), as intended and documented. 11009 [Bodo Moeller; inconsistency pointed out by Michael Attili 11010 <attili@amaxo.com>] 11011 11012 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length 11013 was larger than the MD block size. 11014 [Steve Henson, pointed out by Yost William <YostW@tce.com>] 11015 11016 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument 11017 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set() 11018 using the passed key: if the passed key was a private key the result 11019 of X509_print(), for example, would be to print out all the private key 11020 components. 11021 [Steve Henson] 11022 11023 *) des_quad_cksum() byte order bug fix. 11024 [Ulf Möller, using the problem description in krb4-0.9.7, where 11025 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>] 11026 11027 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly 11028 discouraged. 11029 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>] 11030 11031 *) For easily testing in shell scripts whether some command 11032 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX' 11033 returns with exit code 0 iff no command of the given name is available. 11034 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases, 11035 the output goes to stdout and nothing is printed to stderr. 11036 Additional arguments are always ignored. 11037 11038 Since for each cipher there is a command of the same name, 11039 the 'no-cipher' compilation switches can be tested this way. 11040 11041 ('openssl no-XXX' is not able to detect pseudo-commands such 11042 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.) 11043 [Bodo Moeller] 11044 11045 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration. 11046 [Bodo Moeller] 11047 11048 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE 11049 is set; it will be thrown away anyway because each handshake creates 11050 its own key. 11051 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition 11052 to parameters -- in previous versions (since OpenSSL 0.9.3) the 11053 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning 11054 you effectively got SSL_OP_SINGLE_DH_USE when using this macro. 11055 [Bodo Moeller] 11056 11057 *) New s_client option -ign_eof: EOF at stdin is ignored, and 11058 'Q' and 'R' lose their special meanings (quit/renegotiate). 11059 This is part of what -quiet does; unlike -quiet, -ign_eof 11060 does not suppress any output. 11061 [Richard Levitte] 11062 11063 *) Add compatibility options to the purpose and trust code. The 11064 purpose X509_PURPOSE_ANY is "any purpose" which automatically 11065 accepts a certificate or CA, this was the previous behaviour, 11066 with all the associated security issues. 11067 11068 X509_TRUST_COMPAT is the old trust behaviour: only and 11069 automatically trust self signed roots in certificate store. A 11070 new trust setting X509_TRUST_DEFAULT is used to specify that 11071 a purpose has no associated trust setting and it should instead 11072 use the value in the default purpose. 11073 [Steve Henson] 11074 11075 *) Fix the PKCS#8 DSA private key code so it decodes keys again 11076 and fix a memory leak. 11077 [Steve Henson] 11078 11079 *) In util/mkerr.pl (which implements 'make errors'), preserve 11080 reason strings from the previous version of the .c file, as 11081 the default to have only downcase letters (and digits) in 11082 automatically generated reasons codes is not always appropriate. 11083 [Bodo Moeller] 11084 11085 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table 11086 using strerror. Previously, ERR_reason_error_string() returned 11087 library names as reason strings for SYSerr; but SYSerr is a special 11088 case where small numbers are errno values, not library numbers. 11089 [Bodo Moeller] 11090 11091 *) Add '-dsaparam' option to 'openssl dhparam' application. This 11092 converts DSA parameters into DH parameters. (When creating parameters, 11093 DSA_generate_parameters is used.) 11094 [Bodo Moeller] 11095 11096 *) Include 'length' (recommended exponent length) in C code generated 11097 by 'openssl dhparam -C'. 11098 [Bodo Moeller] 11099 11100 *) The second argument to set_label in perlasm was already being used 11101 so couldn't be used as a "file scope" flag. Moved to third argument 11102 which was free. 11103 [Steve Henson] 11104 11105 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes 11106 instead of RAND_bytes for encryption IVs and salts. 11107 [Bodo Moeller] 11108 11109 *) Include RAND_status() into RAND_METHOD instead of implementing 11110 it only for md_rand.c Otherwise replacing the PRNG by calling 11111 RAND_set_rand_method would be impossible. 11112 [Bodo Moeller] 11113 11114 *) Don't let DSA_generate_key() enter an infinite loop if the random 11115 number generation fails. 11116 [Bodo Moeller] 11117 11118 *) New 'rand' application for creating pseudo-random output. 11119 [Bodo Moeller] 11120 11121 *) Added configuration support for Linux/IA64 11122 [Rolf Haberrecker <rolf@suse.de>] 11123 11124 *) Assembler module support for Mingw32. 11125 [Ulf Möller] 11126 11127 *) Shared library support for HPUX (in shlib/). 11128 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous] 11129 11130 *) Shared library support for Solaris gcc. 11131 [Lutz Behnke <behnke@trustcenter.de>] 11132 11133 Changes between 0.9.4 and 0.9.5 [28 Feb 2000] 11134 11135 *) PKCS7_encrypt() was adding text MIME headers twice because they 11136 were added manually and by SMIME_crlf_copy(). 11137 [Steve Henson] 11138 11139 *) In bntest.c don't call BN_rand with zero bits argument. 11140 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>] 11141 11142 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n] 11143 case was implemented. This caused BN_div_recp() to fail occasionally. 11144 [Ulf Möller] 11145 11146 *) Add an optional second argument to the set_label() in the perl 11147 assembly language builder. If this argument exists and is set 11148 to 1 it signals that the assembler should use a symbol whose 11149 scope is the entire file, not just the current function. This 11150 is needed with MASM which uses the format label:: for this scope. 11151 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>] 11152 11153 *) Change the ASN1 types so they are typedefs by default. Before 11154 almost all types were #define'd to ASN1_STRING which was causing 11155 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING) 11156 for example. 11157 [Steve Henson] 11158 11159 *) Change names of new functions to the new get1/get0 naming 11160 convention: After 'get1', the caller owns a reference count 11161 and has to call ..._free; 'get0' returns a pointer to some 11162 data structure without incrementing reference counters. 11163 (Some of the existing 'get' functions increment a reference 11164 counter, some don't.) 11165 Similarly, 'set1' and 'add1' functions increase reference 11166 counters or duplicate objects. 11167 [Steve Henson] 11168 11169 *) Allow for the possibility of temp RSA key generation failure: 11170 the code used to assume it always worked and crashed on failure. 11171 [Steve Henson] 11172 11173 *) Fix potential buffer overrun problem in BIO_printf(). 11174 [Ulf Möller, using public domain code by Patrick Powell; problem 11175 pointed out by David Sacerdote <das33@cornell.edu>] 11176 11177 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions 11178 RAND_egd() and RAND_status(). In the command line application, 11179 the EGD socket can be specified like a seed file using RANDFILE 11180 or -rand. 11181 [Ulf Möller] 11182 11183 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures. 11184 Some CAs (e.g. Verisign) distribute certificates in this form. 11185 [Steve Henson] 11186 11187 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher 11188 list to exclude them. This means that no special compilation option 11189 is needed to use anonymous DH: it just needs to be included in the 11190 cipher list. 11191 [Steve Henson] 11192 11193 *) Change the EVP_MD_CTX_type macro so its meaning consistent with 11194 EVP_MD_type. The old functionality is available in a new macro called 11195 EVP_MD_md(). Change code that uses it and update docs. 11196 [Steve Henson] 11197 11198 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions 11199 where the 'void *' argument is replaced by a function pointer argument. 11200 Previously 'void *' was abused to point to functions, which works on 11201 many platforms, but is not correct. As these functions are usually 11202 called by macros defined in OpenSSL header files, most source code 11203 should work without changes. 11204 [Richard Levitte] 11205 11206 *) <openssl/opensslconf.h> (which is created by Configure) now contains 11207 sections with information on -D... compiler switches used for 11208 compiling the library so that applications can see them. To enable 11209 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES 11210 must be defined. E.g., 11211 #define OPENSSL_ALGORITHM_DEFINES 11212 #include <openssl/opensslconf.h> 11213 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc. 11214 [Richard Levitte, Ulf and Bodo Möller] 11215 11216 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS 11217 record layer. 11218 [Bodo Moeller] 11219 11220 *) Change the 'other' type in certificate aux info to a STACK_OF 11221 X509_ALGOR. Although not an AlgorithmIdentifier as such it has 11222 the required ASN1 format: arbitrary types determined by an OID. 11223 [Steve Henson] 11224 11225 *) Add some PEM_write_X509_REQ_NEW() functions and a command line 11226 argument to 'req'. This is not because the function is newer or 11227 better than others it just uses the work 'NEW' in the certificate 11228 request header lines. Some software needs this. 11229 [Steve Henson] 11230 11231 *) Reorganise password command line arguments: now passwords can be 11232 obtained from various sources. Delete the PEM_cb function and make 11233 it the default behaviour: i.e. if the callback is NULL and the 11234 usrdata argument is not NULL interpret it as a null terminated pass 11235 phrase. If usrdata and the callback are NULL then the pass phrase 11236 is prompted for as usual. 11237 [Steve Henson] 11238 11239 *) Add support for the Compaq Atalla crypto accelerator. If it is installed, 11240 the support is automatically enabled. The resulting binaries will 11241 autodetect the card and use it if present. 11242 [Ben Laurie and Compaq Inc.] 11243 11244 *) Work around for Netscape hang bug. This sends certificate request 11245 and server done in one record. Since this is perfectly legal in the 11246 SSL/TLS protocol it isn't a "bug" option and is on by default. See 11247 the bugs/SSLv3 entry for more info. 11248 [Steve Henson] 11249 11250 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround. 11251 [Andy Polyakov] 11252 11253 *) Add -rand argument to smime and pkcs12 applications and read/write 11254 of seed file. 11255 [Steve Henson] 11256 11257 *) New 'passwd' tool for crypt(3) and apr1 password hashes. 11258 [Bodo Moeller] 11259 11260 *) Add command line password options to the remaining applications. 11261 [Steve Henson] 11262 11263 *) Bug fix for BN_div_recp() for numerators with an even number of 11264 bits. 11265 [Ulf Möller] 11266 11267 *) More tests in bntest.c, and changed test_bn output. 11268 [Ulf Möller] 11269 11270 *) ./config recognizes MacOS X now. 11271 [Andy Polyakov] 11272 11273 *) Bug fix for BN_div() when the first words of num and divisor are 11274 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0). 11275 [Ulf Möller] 11276 11277 *) Add support for various broken PKCS#8 formats, and command line 11278 options to produce them. 11279 [Steve Henson] 11280 11281 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to 11282 get temporary BIGNUMs from a BN_CTX. 11283 [Ulf Möller] 11284 11285 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont() 11286 for p == 0. 11287 [Ulf Möller] 11288 11289 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and 11290 include a #define from the old name to the new. The original intent 11291 was that statically linked binaries could for example just call 11292 SSLeay_add_all_ciphers() to just add ciphers to the table and not 11293 link with digests. This never worked because SSLeay_add_all_digests() 11294 and SSLeay_add_all_ciphers() were in the same source file so calling 11295 one would link with the other. They are now in separate source files. 11296 [Steve Henson] 11297 11298 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'. 11299 [Steve Henson] 11300 11301 *) Use a less unusual form of the Miller-Rabin primality test (it used 11302 a binary algorithm for exponentiation integrated into the Miller-Rabin 11303 loop, our standard modexp algorithms are faster). 11304 [Bodo Moeller] 11305 11306 *) Support for the EBCDIC character set completed. 11307 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>] 11308 11309 *) Source code cleanups: use const where appropriate, eliminate casts, 11310 use void * instead of char * in lhash. 11311 [Ulf Möller] 11312 11313 *) Bugfix: ssl3_send_server_key_exchange was not restartable 11314 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of 11315 this the server could overwrite ephemeral keys that the client 11316 has already seen). 11317 [Bodo Moeller] 11318 11319 *) Turn DSA_is_prime into a macro that calls BN_is_prime, 11320 using 50 iterations of the Rabin-Miller test. 11321 11322 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50 11323 iterations of the Rabin-Miller test as required by the appendix 11324 to FIPS PUB 186[-1]) instead of DSA_is_prime. 11325 As BN_is_prime_fasttest includes trial division, DSA parameter 11326 generation becomes much faster. 11327 11328 This implies a change for the callback functions in DSA_is_prime 11329 and DSA_generate_parameters: The callback function is called once 11330 for each positive witness in the Rabin-Miller test, not just 11331 occasionally in the inner loop; and the parameters to the 11332 callback function now provide an iteration count for the outer 11333 loop rather than for the current invocation of the inner loop. 11334 DSA_generate_parameters additionally can call the callback 11335 function with an 'iteration count' of -1, meaning that a 11336 candidate has passed the trial division test (when q is generated 11337 from an application-provided seed, trial division is skipped). 11338 [Bodo Moeller] 11339 11340 *) New function BN_is_prime_fasttest that optionally does trial 11341 division before starting the Rabin-Miller test and has 11342 an additional BN_CTX * argument (whereas BN_is_prime always 11343 has to allocate at least one BN_CTX). 11344 'callback(1, -1, cb_arg)' is called when a number has passed the 11345 trial division stage. 11346 [Bodo Moeller] 11347 11348 *) Fix for bug in CRL encoding. The validity dates weren't being handled 11349 as ASN1_TIME. 11350 [Steve Henson] 11351 11352 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file. 11353 [Steve Henson] 11354 11355 *) New function BN_pseudo_rand(). 11356 [Ulf Möller] 11357 11358 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable) 11359 bignum version of BN_from_montgomery() with the working code from 11360 SSLeay 0.9.0 (the word based version is faster anyway), and clean up 11361 the comments. 11362 [Ulf Möller] 11363 11364 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that 11365 made it impossible to use the same SSL_SESSION data structure in 11366 SSL2 clients in multiple threads. 11367 [Bodo Moeller] 11368 11369 *) The return value of RAND_load_file() no longer counts bytes obtained 11370 by stat(). RAND_load_file(..., -1) is new and uses the complete file 11371 to seed the PRNG (previously an explicit byte count was required). 11372 [Ulf Möller, Bodo Möller] 11373 11374 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes 11375 used (char *) instead of (void *) and had casts all over the place. 11376 [Steve Henson] 11377 11378 *) Make BN_generate_prime() return NULL on error if ret!=NULL. 11379 [Ulf Möller] 11380 11381 *) Retain source code compatibility for BN_prime_checks macro: 11382 BN_is_prime(..., BN_prime_checks, ...) now uses 11383 BN_prime_checks_for_size to determine the appropriate number of 11384 Rabin-Miller iterations. 11385 [Ulf Möller] 11386 11387 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to 11388 DH_CHECK_P_NOT_SAFE_PRIME. 11389 (Check if this is true? OpenPGP calls them "strong".) 11390 [Ulf Möller] 11391 11392 *) Merge the functionality of "dh" and "gendh" programs into a new program 11393 "dhparam". The old programs are retained for now but will handle DH keys 11394 (instead of parameters) in future. 11395 [Steve Henson] 11396 11397 *) Make the ciphers, s_server and s_client programs check the return values 11398 when a new cipher list is set. 11399 [Steve Henson] 11400 11401 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit 11402 ciphers. Before when the 56bit ciphers were enabled the sorting was 11403 wrong. 11404 11405 The syntax for the cipher sorting has been extended to support sorting by 11406 cipher-strength (using the strength_bits hard coded in the tables). 11407 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod). 11408 11409 Fix a bug in the cipher-command parser: when supplying a cipher command 11410 string with an "undefined" symbol (neither command nor alphanumeric 11411 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now 11412 an error is flagged. 11413 11414 Due to the strength-sorting extension, the code of the 11415 ssl_create_cipher_list() function was completely rearranged. I hope that 11416 the readability was also increased :-) 11417 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] 11418 11419 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1 11420 for the first serial number and places 2 in the serial number file. This 11421 avoids problems when the root CA is created with serial number zero and 11422 the first user certificate has the same issuer name and serial number 11423 as the root CA. 11424 [Steve Henson] 11425 11426 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses 11427 the new code. Add documentation for this stuff. 11428 [Steve Henson] 11429 11430 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from 11431 X509_*() to X509at_*() on the grounds that they don't handle X509 11432 structures and behave in an analogous way to the X509v3 functions: 11433 they shouldn't be called directly but wrapper functions should be used 11434 instead. 11435 11436 So we also now have some wrapper functions that call the X509at functions 11437 when passed certificate requests. (TO DO: similar things can be done with 11438 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other 11439 things. Some of these need some d2i or i2d and print functionality 11440 because they handle more complex structures.) 11441 [Steve Henson] 11442 11443 *) Add missing #ifndefs that caused missing symbols when building libssl 11444 as a shared library without RSA. Use #ifndef NO_SSL2 instead of 11445 NO_RSA in ssl/s2*.c. 11446 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller] 11447 11448 *) Precautions against using the PRNG uninitialized: RAND_bytes() now 11449 has a return value which indicates the quality of the random data 11450 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's 11451 error queue. New function RAND_pseudo_bytes() generates output that is 11452 guaranteed to be unique but not unpredictable. RAND_add is like 11453 RAND_seed, but takes an extra argument for an entropy estimate 11454 (RAND_seed always assumes full entropy). 11455 [Ulf Möller] 11456 11457 *) Do more iterations of Rabin-Miller probable prime test (specifically, 11458 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes 11459 instead of only 2 for all lengths; see BN_prime_checks_for_size definition 11460 in crypto/bn/bn_prime.c for the complete table). This guarantees a 11461 false-positive rate of at most 2^-80 for random input. 11462 [Bodo Moeller] 11463 11464 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs. 11465 [Bodo Moeller] 11466 11467 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain 11468 in the 0.9.5 release), this returns the chain 11469 from an X509_CTX structure with a dup of the stack and all 11470 the X509 reference counts upped: so the stack will exist 11471 after X509_CTX_cleanup() has been called. Modify pkcs12.c 11472 to use this. 11473 11474 Also make SSL_SESSION_print() print out the verify return 11475 code. 11476 [Steve Henson] 11477 11478 *) Add manpage for the pkcs12 command. Also change the default 11479 behaviour so MAC iteration counts are used unless the new 11480 -nomaciter option is used. This improves file security and 11481 only older versions of MSIE (4.0 for example) need it. 11482 [Steve Henson] 11483 11484 *) Honor the no-xxx Configure options when creating .DEF files. 11485 [Ulf Möller] 11486 11487 *) Add PKCS#10 attributes to field table: challengePassword, 11488 unstructuredName and unstructuredAddress. These are taken from 11489 draft PKCS#9 v2.0 but are compatible with v1.2 provided no 11490 international characters are used. 11491 11492 More changes to X509_ATTRIBUTE code: allow the setting of types 11493 based on strings. Remove the 'loc' parameter when adding 11494 attributes because these will be a SET OF encoding which is sorted 11495 in ASN1 order. 11496 [Steve Henson] 11497 11498 *) Initial changes to the 'req' utility to allow request generation 11499 automation. This will allow an application to just generate a template 11500 file containing all the field values and have req construct the 11501 request. 11502 11503 Initial support for X509_ATTRIBUTE handling. Stacks of these are 11504 used all over the place including certificate requests and PKCS#7 11505 structures. They are currently handled manually where necessary with 11506 some primitive wrappers for PKCS#7. The new functions behave in a 11507 manner analogous to the X509 extension functions: they allow 11508 attributes to be looked up by NID and added. 11509 11510 Later something similar to the X509V3 code would be desirable to 11511 automatically handle the encoding, decoding and printing of the 11512 more complex types. The string types like challengePassword can 11513 be handled by the string table functions. 11514 11515 Also modified the multi byte string table handling. Now there is 11516 a 'global mask' which masks out certain types. The table itself 11517 can use the flag STABLE_NO_MASK to ignore the mask setting: this 11518 is useful when for example there is only one permissible type 11519 (as in countryName) and using the mask might result in no valid 11520 types at all. 11521 [Steve Henson] 11522 11523 *) Clean up 'Finished' handling, and add functions SSL_get_finished and 11524 SSL_get_peer_finished to allow applications to obtain the latest 11525 Finished messages sent to the peer or expected from the peer, 11526 respectively. (SSL_get_peer_finished is usually the Finished message 11527 actually received from the peer, otherwise the protocol will be aborted.) 11528 11529 As the Finished message are message digests of the complete handshake 11530 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can 11531 be used for external authentication procedures when the authentication 11532 provided by SSL/TLS is not desired or is not enough. 11533 [Bodo Moeller] 11534 11535 *) Enhanced support for Alpha Linux is added. Now ./config checks if 11536 the host supports BWX extension and if Compaq C is present on the 11537 $PATH. Just exploiting of the BWX extension results in 20-30% 11538 performance kick for some algorithms, e.g. DES and RC4 to mention 11539 a couple. Compaq C in turn generates ~20% faster code for MD5 and 11540 SHA1. 11541 [Andy Polyakov] 11542 11543 *) Add support for MS "fast SGC". This is arguably a violation of the 11544 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with 11545 weak crypto and after checking the certificate is SGC a second one 11546 with strong crypto. MS SGC stops the first handshake after receiving 11547 the server certificate message and sends a second client hello. Since 11548 a server will typically do all the time consuming operations before 11549 expecting any further messages from the client (server key exchange 11550 is the most expensive) there is little difference between the two. 11551 11552 To get OpenSSL to support MS SGC we have to permit a second client 11553 hello message after we have sent server done. In addition we have to 11554 reset the MAC if we do get this second client hello. 11555 [Steve Henson] 11556 11557 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide 11558 if a DER encoded private key is RSA or DSA traditional format. Changed 11559 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional" 11560 format DER encoded private key. Newer code should use PKCS#8 format which 11561 has the key type encoded in the ASN1 structure. Added DER private key 11562 support to pkcs8 application. 11563 [Steve Henson] 11564 11565 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous 11566 ciphersuites has been selected (as required by the SSL 3/TLS 1 11567 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT 11568 is set, we interpret this as a request to violate the specification 11569 (the worst that can happen is a handshake failure, and 'correct' 11570 behaviour would result in a handshake failure anyway). 11571 [Bodo Moeller] 11572 11573 *) In SSL_CTX_add_session, take into account that there might be multiple 11574 SSL_SESSION structures with the same session ID (e.g. when two threads 11575 concurrently obtain them from an external cache). 11576 The internal cache can handle only one SSL_SESSION with a given ID, 11577 so if there's a conflict, we now throw out the old one to achieve 11578 consistency. 11579 [Bodo Moeller] 11580 11581 *) Add OIDs for idea and blowfish in CBC mode. This will allow both 11582 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to 11583 some routines that use cipher OIDs: some ciphers do not have OIDs 11584 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for 11585 example. 11586 [Steve Henson] 11587 11588 *) Simplify the trust setting structure and code. Now we just have 11589 two sequences of OIDs for trusted and rejected settings. These will 11590 typically have values the same as the extended key usage extension 11591 and any application specific purposes. 11592 11593 The trust checking code now has a default behaviour: it will just 11594 check for an object with the same NID as the passed id. Functions can 11595 be provided to override either the default behaviour or the behaviour 11596 for a given id. SSL client, server and email already have functions 11597 in place for compatibility: they check the NID and also return "trusted" 11598 if the certificate is self signed. 11599 [Steve Henson] 11600 11601 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the 11602 traditional format into an EVP_PKEY structure. 11603 [Steve Henson] 11604 11605 *) Add a password callback function PEM_cb() which either prompts for 11606 a password if usr_data is NULL or otherwise assumes it is a null 11607 terminated password. Allow passwords to be passed on command line 11608 environment or config files in a few more utilities. 11609 [Steve Henson] 11610 11611 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private 11612 keys. Add some short names for PKCS#8 PBE algorithms and allow them 11613 to be specified on the command line for the pkcs8 and pkcs12 utilities. 11614 Update documentation. 11615 [Steve Henson] 11616 11617 *) Support for ASN1 "NULL" type. This could be handled before by using 11618 ASN1_TYPE but there wasn't any function that would try to read a NULL 11619 and produce an error if it couldn't. For compatibility we also have 11620 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and 11621 don't allocate anything because they don't need to. 11622 [Steve Henson] 11623 11624 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS 11625 for details. 11626 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>] 11627 11628 *) Rebuild of the memory allocation routines used by OpenSSL code and 11629 possibly others as well. The purpose is to make an interface that 11630 provide hooks so anyone can build a separate set of allocation and 11631 deallocation routines to be used by OpenSSL, for example memory 11632 pool implementations, or something else, which was previously hard 11633 since Malloc(), Realloc() and Free() were defined as macros having 11634 the values malloc, realloc and free, respectively (except for Win32 11635 compilations). The same is provided for memory debugging code. 11636 OpenSSL already comes with functionality to find memory leaks, but 11637 this gives people a chance to debug other memory problems. 11638 11639 With these changes, a new set of functions and macros have appeared: 11640 11641 CRYPTO_set_mem_debug_functions() [F] 11642 CRYPTO_get_mem_debug_functions() [F] 11643 CRYPTO_dbg_set_options() [F] 11644 CRYPTO_dbg_get_options() [F] 11645 CRYPTO_malloc_debug_init() [M] 11646 11647 The memory debug functions are NULL by default, unless the library 11648 is compiled with CRYPTO_MDEBUG or friends is defined. If someone 11649 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which 11650 gives the standard debugging functions that come with OpenSSL) or 11651 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions 11652 provided by the library user) must be used. When the standard 11653 debugging functions are used, CRYPTO_dbg_set_options can be used to 11654 request additional information: 11655 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting 11656 the CRYPTO_MDEBUG_xxx macro when compiling the library. 11657 11658 Also, things like CRYPTO_set_mem_functions will always give the 11659 expected result (the new set of functions is used for allocation 11660 and deallocation) at all times, regardless of platform and compiler 11661 options. 11662 11663 To finish it up, some functions that were never use in any other 11664 way than through macros have a new API and new semantic: 11665 11666 CRYPTO_dbg_malloc() 11667 CRYPTO_dbg_realloc() 11668 CRYPTO_dbg_free() 11669 11670 All macros of value have retained their old syntax. 11671 [Richard Levitte and Bodo Moeller] 11672 11673 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the 11674 ordering of SMIMECapabilities wasn't in "strength order" and there 11675 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature 11676 algorithm. 11677 [Steve Henson] 11678 11679 *) Some ASN1 types with illegal zero length encoding (INTEGER, 11680 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines. 11681 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson] 11682 11683 *) Merge in my S/MIME library for OpenSSL. This provides a simple 11684 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough 11685 functionality to handle multipart/signed properly) and a utility 11686 called 'smime' to call all this stuff. This is based on code I 11687 originally wrote for Celo who have kindly allowed it to be 11688 included in OpenSSL. 11689 [Steve Henson] 11690 11691 *) Add variants des_set_key_checked and des_set_key_unchecked of 11692 des_set_key (aka des_key_sched). Global variable des_check_key 11693 decides which of these is called by des_set_key; this way 11694 des_check_key behaves as it always did, but applications and 11695 the library itself, which was buggy for des_check_key == 1, 11696 have a cleaner way to pick the version they need. 11697 [Bodo Moeller] 11698 11699 *) New function PKCS12_newpass() which changes the password of a 11700 PKCS12 structure. 11701 [Steve Henson] 11702 11703 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and 11704 dynamic mix. In both cases the ids can be used as an index into the 11705 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add() 11706 functions so they accept a list of the field values and the 11707 application doesn't need to directly manipulate the X509_TRUST 11708 structure. 11709 [Steve Henson] 11710 11711 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't 11712 need initialising. 11713 [Steve Henson] 11714 11715 *) Modify the way the V3 extension code looks up extensions. This now 11716 works in a similar way to the object code: we have some "standard" 11717 extensions in a static table which is searched with OBJ_bsearch() 11718 and the application can add dynamic ones if needed. The file 11719 crypto/x509v3/ext_dat.h now has the info: this file needs to be 11720 updated whenever a new extension is added to the core code and kept 11721 in ext_nid order. There is a simple program 'tabtest.c' which checks 11722 this. New extensions are not added too often so this file can readily 11723 be maintained manually. 11724 11725 There are two big advantages in doing things this way. The extensions 11726 can be looked up immediately and no longer need to be "added" using 11727 X509V3_add_standard_extensions(): this function now does nothing. 11728 [Side note: I get *lots* of email saying the extension code doesn't 11729 work because people forget to call this function] 11730 Also no dynamic allocation is done unless new extensions are added: 11731 so if we don't add custom extensions there is no need to call 11732 X509V3_EXT_cleanup(). 11733 [Steve Henson] 11734 11735 *) Modify enc utility's salting as follows: make salting the default. Add a 11736 magic header, so unsalted files fail gracefully instead of just decrypting 11737 to garbage. This is because not salting is a big security hole, so people 11738 should be discouraged from doing it. 11739 [Ben Laurie] 11740 11741 *) Fixes and enhancements to the 'x509' utility. It allowed a message 11742 digest to be passed on the command line but it only used this 11743 parameter when signing a certificate. Modified so all relevant 11744 operations are affected by the digest parameter including the 11745 -fingerprint and -x509toreq options. Also -x509toreq choked if a 11746 DSA key was used because it didn't fix the digest. 11747 [Steve Henson] 11748 11749 *) Initial certificate chain verify code. Currently tests the untrusted 11750 certificates for consistency with the verify purpose (which is set 11751 when the X509_STORE_CTX structure is set up) and checks the pathlength. 11752 11753 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour: 11754 this is because it will reject chains with invalid extensions whereas 11755 every previous version of OpenSSL and SSLeay made no checks at all. 11756 11757 Trust code: checks the root CA for the relevant trust settings. Trust 11758 settings have an initial value consistent with the verify purpose: e.g. 11759 if the verify purpose is for SSL client use it expects the CA to be 11760 trusted for SSL client use. However the default value can be changed to 11761 permit custom trust settings: one example of this would be to only trust 11762 certificates from a specific "secure" set of CAs. 11763 11764 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions 11765 which should be used for version portability: especially since the 11766 verify structure is likely to change more often now. 11767 11768 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions 11769 to set them. If not set then assume SSL clients will verify SSL servers 11770 and vice versa. 11771 11772 Two new options to the verify program: -untrusted allows a set of 11773 untrusted certificates to be passed in and -purpose which sets the 11774 intended purpose of the certificate. If a purpose is set then the 11775 new chain verify code is used to check extension consistency. 11776 [Steve Henson] 11777 11778 *) Support for the authority information access extension. 11779 [Steve Henson] 11780 11781 *) Modify RSA and DSA PEM read routines to transparently handle 11782 PKCS#8 format private keys. New *_PUBKEY_* functions that handle 11783 public keys in a format compatible with certificate 11784 SubjectPublicKeyInfo structures. Unfortunately there were already 11785 functions called *_PublicKey_* which used various odd formats so 11786 these are retained for compatibility: however the DSA variants were 11787 never in a public release so they have been deleted. Changed dsa/rsa 11788 utilities to handle the new format: note no releases ever handled public 11789 keys so we should be OK. 11790 11791 The primary motivation for this change is to avoid the same fiasco 11792 that dogs private keys: there are several incompatible private key 11793 formats some of which are standard and some OpenSSL specific and 11794 require various evil hacks to allow partial transparent handling and 11795 even then it doesn't work with DER formats. Given the option anything 11796 other than PKCS#8 should be dumped: but the other formats have to 11797 stay in the name of compatibility. 11798 11799 With public keys and the benefit of hindsight one standard format 11800 is used which works with EVP_PKEY, RSA or DSA structures: though 11801 it clearly returns an error if you try to read the wrong kind of key. 11802 11803 Added a -pubkey option to the 'x509' utility to output the public key. 11804 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*() 11805 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add 11806 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*()) 11807 that do the same as the EVP_PKEY_assign_*() except they up the 11808 reference count of the added key (they don't "swallow" the 11809 supplied key). 11810 [Steve Henson] 11811 11812 *) Fixes to crypto/x509/by_file.c the code to read in certificates and 11813 CRLs would fail if the file contained no certificates or no CRLs: 11814 added a new function to read in both types and return the number 11815 read: this means that if none are read it will be an error. The 11816 DER versions of the certificate and CRL reader would always fail 11817 because it isn't possible to mix certificates and CRLs in DER format 11818 without choking one or the other routine. Changed this to just read 11819 a certificate: this is the best we can do. Also modified the code 11820 in apps/verify.c to take notice of return codes: it was previously 11821 attempting to read in certificates from NULL pointers and ignoring 11822 any errors: this is one reason why the cert and CRL reader seemed 11823 to work. It doesn't check return codes from the default certificate 11824 routines: these may well fail if the certificates aren't installed. 11825 [Steve Henson] 11826 11827 *) Code to support otherName option in GeneralName. 11828 [Steve Henson] 11829 11830 *) First update to verify code. Change the verify utility 11831 so it warns if it is passed a self signed certificate: 11832 for consistency with the normal behaviour. X509_verify 11833 has been modified to it will now verify a self signed 11834 certificate if *exactly* the same certificate appears 11835 in the store: it was previously impossible to trust a 11836 single self signed certificate. This means that: 11837 openssl verify ss.pem 11838 now gives a warning about a self signed certificate but 11839 openssl verify -CAfile ss.pem ss.pem 11840 is OK. 11841 [Steve Henson] 11842 11843 *) For servers, store verify_result in SSL_SESSION data structure 11844 (and add it to external session representation). 11845 This is needed when client certificate verifications fails, 11846 but an application-provided verification callback (set by 11847 SSL_CTX_set_cert_verify_callback) allows accepting the session 11848 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK 11849 but returns 1): When the session is reused, we have to set 11850 ssl->verify_result to the appropriate error code to avoid 11851 security holes. 11852 [Bodo Moeller, problem pointed out by Lutz Jaenicke] 11853 11854 *) Fix a bug in the new PKCS#7 code: it didn't consider the 11855 case in PKCS7_dataInit() where the signed PKCS7 structure 11856 didn't contain any existing data because it was being created. 11857 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson] 11858 11859 *) Add a salt to the key derivation routines in enc.c. This 11860 forms the first 8 bytes of the encrypted file. Also add a 11861 -S option to allow a salt to be input on the command line. 11862 [Steve Henson] 11863 11864 *) New function X509_cmp(). Oddly enough there wasn't a function 11865 to compare two certificates. We do this by working out the SHA1 11866 hash and comparing that. X509_cmp() will be needed by the trust 11867 code. 11868 [Steve Henson] 11869 11870 *) SSL_get1_session() is like SSL_get_session(), but increments 11871 the reference count in the SSL_SESSION returned. 11872 [Geoff Thorpe <geoff@eu.c2.net>] 11873 11874 *) Fix for 'req': it was adding a null to request attributes. 11875 Also change the X509_LOOKUP and X509_INFO code to handle 11876 certificate auxiliary information. 11877 [Steve Henson] 11878 11879 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document 11880 the 'enc' command. 11881 [Steve Henson] 11882 11883 *) Add the possibility to add extra information to the memory leak 11884 detecting output, to form tracebacks, showing from where each 11885 allocation was originated: CRYPTO_push_info("constant string") adds 11886 the string plus current file name and line number to a per-thread 11887 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info() 11888 is like calling CYRPTO_pop_info() until the stack is empty. 11889 Also updated memory leak detection code to be multi-thread-safe. 11890 [Richard Levitte] 11891 11892 *) Add options -text and -noout to pkcs7 utility and delete the 11893 encryption options which never did anything. Update docs. 11894 [Steve Henson] 11895 11896 *) Add options to some of the utilities to allow the pass phrase 11897 to be included on either the command line (not recommended on 11898 OSes like Unix) or read from the environment. Update the 11899 manpages and fix a few bugs. 11900 [Steve Henson] 11901 11902 *) Add a few manpages for some of the openssl commands. 11903 [Steve Henson] 11904 11905 *) Fix the -revoke option in ca. It was freeing up memory twice, 11906 leaking and not finding already revoked certificates. 11907 [Steve Henson] 11908 11909 *) Extensive changes to support certificate auxiliary information. 11910 This involves the use of X509_CERT_AUX structure and X509_AUX 11911 functions. An X509_AUX function such as PEM_read_X509_AUX() 11912 can still read in a certificate file in the usual way but it 11913 will also read in any additional "auxiliary information". By 11914 doing things this way a fair degree of compatibility can be 11915 retained: existing certificates can have this information added 11916 using the new 'x509' options. 11917 11918 Current auxiliary information includes an "alias" and some trust 11919 settings. The trust settings will ultimately be used in enhanced 11920 certificate chain verification routines: currently a certificate 11921 can only be trusted if it is self signed and then it is trusted 11922 for all purposes. 11923 [Steve Henson] 11924 11925 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD). 11926 The problem was that one of the replacement routines had not been working 11927 since SSLeay releases. For now the offending routine has been replaced 11928 with non-optimised assembler. Even so, this now gives around 95% 11929 performance improvement for 1024 bit RSA signs. 11930 [Mark Cox] 11931 11932 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2 11933 handling. Most clients have the effective key size in bits equal to 11934 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key. 11935 A few however don't do this and instead use the size of the decrypted key 11936 to determine the RC2 key length and the AlgorithmIdentifier to determine 11937 the effective key length. In this case the effective key length can still 11938 be 40 bits but the key length can be 168 bits for example. This is fixed 11939 by manually forcing an RC2 key into the EVP_PKEY structure because the 11940 EVP code can't currently handle unusual RC2 key sizes: it always assumes 11941 the key length and effective key length are equal. 11942 [Steve Henson] 11943 11944 *) Add a bunch of functions that should simplify the creation of 11945 X509_NAME structures. Now you should be able to do: 11946 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0); 11947 and have it automatically work out the correct field type and fill in 11948 the structures. The more adventurous can try: 11949 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0); 11950 and it will (hopefully) work out the correct multibyte encoding. 11951 [Steve Henson] 11952 11953 *) Change the 'req' utility to use the new field handling and multibyte 11954 copy routines. Before the DN field creation was handled in an ad hoc 11955 way in req, ca, and x509 which was rather broken and didn't support 11956 BMPStrings or UTF8Strings. Since some software doesn't implement 11957 BMPStrings or UTF8Strings yet, they can be enabled using the config file 11958 using the dirstring_type option. See the new comment in the default 11959 openssl.cnf for more info. 11960 [Steve Henson] 11961 11962 *) Make crypto/rand/md_rand.c more robust: 11963 - Assure unique random numbers after fork(). 11964 - Make sure that concurrent threads access the global counter and 11965 md serializably so that we never lose entropy in them 11966 or use exactly the same state in multiple threads. 11967 Access to the large state is not always serializable because 11968 the additional locking could be a performance killer, and 11969 md should be large enough anyway. 11970 [Bodo Moeller] 11971 11972 *) New file apps/app_rand.c with commonly needed functionality 11973 for handling the random seed file. 11974 11975 Use the random seed file in some applications that previously did not: 11976 ca, 11977 dsaparam -genkey (which also ignored its '-rand' option), 11978 s_client, 11979 s_server, 11980 x509 (when signing). 11981 Except on systems with /dev/urandom, it is crucial to have a random 11982 seed file at least for key creation, DSA signing, and for DH exchanges; 11983 for RSA signatures we could do without one. 11984 11985 gendh and gendsa (unlike genrsa) used to read only the first byte 11986 of each file listed in the '-rand' option. The function as previously 11987 found in genrsa is now in app_rand.c and is used by all programs 11988 that support '-rand'. 11989 [Bodo Moeller] 11990 11991 *) In RAND_write_file, use mode 0600 for creating files; 11992 don't just chmod when it may be too late. 11993 [Bodo Moeller] 11994 11995 *) Report an error from X509_STORE_load_locations 11996 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed. 11997 [Bill Perry] 11998 11999 *) New function ASN1_mbstring_copy() this copies a string in either 12000 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format 12001 into an ASN1_STRING type. A mask of permissible types is passed 12002 and it chooses the "minimal" type to use or an error if not type 12003 is suitable. 12004 [Steve Henson] 12005 12006 *) Add function equivalents to the various macros in asn1.h. The old 12007 macros are retained with an M_ prefix. Code inside the library can 12008 use the M_ macros. External code (including the openssl utility) 12009 should *NOT* in order to be "shared library friendly". 12010 [Steve Henson] 12011 12012 *) Add various functions that can check a certificate's extensions 12013 to see if it usable for various purposes such as SSL client, 12014 server or S/MIME and CAs of these types. This is currently 12015 VERY EXPERIMENTAL but will ultimately be used for certificate chain 12016 verification. Also added a -purpose flag to x509 utility to 12017 print out all the purposes. 12018 [Steve Henson] 12019 12020 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated 12021 functions. 12022 [Steve Henson] 12023 12024 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search 12025 for, obtain and decode and extension and obtain its critical flag. 12026 This allows all the necessary extension code to be handled in a 12027 single function call. 12028 [Steve Henson] 12029 12030 *) RC4 tune-up featuring 30-40% performance improvement on most RISC 12031 platforms. See crypto/rc4/rc4_enc.c for further details. 12032 [Andy Polyakov] 12033 12034 *) New -noout option to asn1parse. This causes no output to be produced 12035 its main use is when combined with -strparse and -out to extract data 12036 from a file (which may not be in ASN.1 format). 12037 [Steve Henson] 12038 12039 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer 12040 when producing the local key id. 12041 [Richard Levitte <levitte@stacken.kth.se>] 12042 12043 *) New option -dhparam in s_server. This allows a DH parameter file to be 12044 stated explicitly. If it is not stated then it tries the first server 12045 certificate file. The previous behaviour hard coded the filename 12046 "server.pem". 12047 [Steve Henson] 12048 12049 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow 12050 a public key to be input or output. For example: 12051 openssl rsa -in key.pem -pubout -out pubkey.pem 12052 Also added necessary DSA public key functions to handle this. 12053 [Steve Henson] 12054 12055 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained 12056 in the message. This was handled by allowing 12057 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it. 12058 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>] 12059 12060 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null 12061 to the end of the strings whereas this didn't. This would cause problems 12062 if strings read with d2i_ASN1_bytes() were later modified. 12063 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>] 12064 12065 *) Fix for base64 decode bug. When a base64 bio reads only one line of 12066 data and it contains EOF it will end up returning an error. This is 12067 caused by input 46 bytes long. The cause is due to the way base64 12068 BIOs find the start of base64 encoded data. They do this by trying a 12069 trial decode on each line until they find one that works. When they 12070 do a flag is set and it starts again knowing it can pass all the 12071 data directly through the decoder. Unfortunately it doesn't reset 12072 the context it uses. This means that if EOF is reached an attempt 12073 is made to pass two EOFs through the context and this causes the 12074 resulting error. This can also cause other problems as well. As is 12075 usual with these problems it takes *ages* to find and the fix is 12076 trivial: move one line. 12077 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ] 12078 12079 *) Ugly workaround to get s_client and s_server working under Windows. The 12080 old code wouldn't work because it needed to select() on sockets and the 12081 tty (for keypresses and to see if data could be written). Win32 only 12082 supports select() on sockets so we select() with a 1s timeout on the 12083 sockets and then see if any characters are waiting to be read, if none 12084 are present then we retry, we also assume we can always write data to 12085 the tty. This isn't nice because the code then blocks until we've 12086 received a complete line of data and it is effectively polling the 12087 keyboard at 1s intervals: however it's quite a bit better than not 12088 working at all :-) A dedicated Windows application might handle this 12089 with an event loop for example. 12090 [Steve Henson] 12091 12092 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign 12093 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions 12094 will be called when RSA_sign() and RSA_verify() are used. This is useful 12095 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available. 12096 For this to work properly RSA_public_decrypt() and RSA_private_encrypt() 12097 should *not* be used: RSA_sign() and RSA_verify() must be used instead. 12098 This necessitated the support of an extra signature type NID_md5_sha1 12099 for SSL signatures and modifications to the SSL library to use it instead 12100 of calling RSA_public_decrypt() and RSA_private_encrypt(). 12101 [Steve Henson] 12102 12103 *) Add new -verify -CAfile and -CApath options to the crl program, these 12104 will lookup a CRL issuers certificate and verify the signature in a 12105 similar way to the verify program. Tidy up the crl program so it 12106 no longer accesses structures directly. Make the ASN1 CRL parsing a bit 12107 less strict. It will now permit CRL extensions even if it is not 12108 a V2 CRL: this will allow it to tolerate some broken CRLs. 12109 [Steve Henson] 12110 12111 *) Initialize all non-automatic variables each time one of the openssl 12112 sub-programs is started (this is necessary as they may be started 12113 multiple times from the "OpenSSL>" prompt). 12114 [Lennart Bang, Bodo Moeller] 12115 12116 *) Preliminary compilation option RSA_NULL which disables RSA crypto without 12117 removing all other RSA functionality (this is what NO_RSA does). This 12118 is so (for example) those in the US can disable those operations covered 12119 by the RSA patent while allowing storage and parsing of RSA keys and RSA 12120 key generation. 12121 [Steve Henson] 12122 12123 *) Non-copying interface to BIO pairs. 12124 (still largely untested) 12125 [Bodo Moeller] 12126 12127 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive 12128 ASCII string. This was handled independently in various places before. 12129 [Steve Henson] 12130 12131 *) New functions UTF8_getc() and UTF8_putc() that parse and generate 12132 UTF8 strings a character at a time. 12133 [Steve Henson] 12134 12135 *) Use client_version from client hello to select the protocol 12136 (s23_srvr.c) and for RSA client key exchange verification 12137 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications. 12138 [Bodo Moeller] 12139 12140 *) Add various utility functions to handle SPKACs, these were previously 12141 handled by poking round in the structure internals. Added new function 12142 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to 12143 print, verify and generate SPKACs. Based on an original idea from 12144 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified. 12145 [Steve Henson] 12146 12147 *) RIPEMD160 is operational on all platforms and is back in 'make test'. 12148 [Andy Polyakov] 12149 12150 *) Allow the config file extension section to be overwritten on the 12151 command line. Based on an original idea from Massimiliano Pala 12152 <madwolf@comune.modena.it>. The new option is called -extensions 12153 and can be applied to ca, req and x509. Also -reqexts to override 12154 the request extensions in req and -crlexts to override the crl extensions 12155 in ca. 12156 [Steve Henson] 12157 12158 *) Add new feature to the SPKAC handling in ca. Now you can include 12159 the same field multiple times by preceding it by "XXXX." for example: 12160 1.OU="Unit name 1" 12161 2.OU="Unit name 2" 12162 this is the same syntax as used in the req config file. 12163 [Steve Henson] 12164 12165 *) Allow certificate extensions to be added to certificate requests. These 12166 are specified in a 'req_extensions' option of the req section of the 12167 config file. They can be printed out with the -text option to req but 12168 are otherwise ignored at present. 12169 [Steve Henson] 12170 12171 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first 12172 data read consists of only the final block it would not decrypted because 12173 EVP_CipherUpdate() would correctly report zero bytes had been decrypted. 12174 A misplaced 'break' also meant the decrypted final block might not be 12175 copied until the next read. 12176 [Steve Henson] 12177 12178 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added 12179 a few extra parameters to the DH structure: these will be useful if 12180 for example we want the value of 'q' or implement X9.42 DH. 12181 [Steve Henson] 12182 12183 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and 12184 provides hooks that allow the default DSA functions or functions on a 12185 "per key" basis to be replaced. This allows hardware acceleration and 12186 hardware key storage to be handled without major modification to the 12187 library. Also added low level modexp hooks and CRYPTO_EX structure and 12188 associated functions. 12189 [Steve Henson] 12190 12191 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO 12192 as "read only": it can't be written to and the buffer it points to will 12193 not be freed. Reading from a read only BIO is much more efficient than 12194 a normal memory BIO. This was added because there are several times when 12195 an area of memory needs to be read from a BIO. The previous method was 12196 to create a memory BIO and write the data to it, this results in two 12197 copies of the data and an O(n^2) reading algorithm. There is a new 12198 function BIO_new_mem_buf() which creates a read only memory BIO from 12199 an area of memory. Also modified the PKCS#7 routines to use read only 12200 memory BIOs. 12201 [Steve Henson] 12202 12203 *) Bugfix: ssl23_get_client_hello did not work properly when called in 12204 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of 12205 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read, 12206 but a retry condition occurred while trying to read the rest. 12207 [Bodo Moeller] 12208 12209 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as 12210 NID_pkcs7_encrypted by default: this was wrong since this should almost 12211 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle 12212 the encrypted data type: this is a more sensible place to put it and it 12213 allows the PKCS#12 code to be tidied up that duplicated this 12214 functionality. 12215 [Steve Henson] 12216 12217 *) Changed obj_dat.pl script so it takes its input and output files on 12218 the command line. This should avoid shell escape redirection problems 12219 under Win32. 12220 [Steve Henson] 12221 12222 *) Initial support for certificate extension requests, these are included 12223 in things like Xenroll certificate requests. Included functions to allow 12224 extensions to be obtained and added. 12225 [Steve Henson] 12226 12227 *) -crlf option to s_client and s_server for sending newlines as 12228 CRLF (as required by many protocols). 12229 [Bodo Moeller] 12230 12231 Changes between 0.9.3a and 0.9.4 [09 Aug 1999] 12232 12233 *) Install libRSAglue.a when OpenSSL is built with RSAref. 12234 [Ralf S. Engelschall] 12235 12236 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency. 12237 [Andrija Antonijevic <TheAntony2@bigfoot.com>] 12238 12239 *) Fix -startdate and -enddate (which was missing) arguments to 'ca' 12240 program. 12241 [Steve Henson] 12242 12243 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as 12244 DH parameters/keys (q is lost during that conversion, but the resulting 12245 DH parameters contain its length). 12246 12247 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is 12248 much faster than DH_generate_parameters (which creates parameters 12249 where p = 2*q + 1), and also the smaller q makes DH computations 12250 much more efficient (160-bit exponentiation instead of 1024-bit 12251 exponentiation); so this provides a convenient way to support DHE 12252 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of 12253 utter importance to use 12254 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); 12255 or 12256 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); 12257 when such DH parameters are used, because otherwise small subgroup 12258 attacks may become possible! 12259 [Bodo Moeller] 12260 12261 *) Avoid memory leak in i2d_DHparams. 12262 [Bodo Moeller] 12263 12264 *) Allow the -k option to be used more than once in the enc program: 12265 this allows the same encrypted message to be read by multiple recipients. 12266 [Steve Henson] 12267 12268 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts 12269 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then 12270 it will always use the numerical form of the OID, even if it has a short 12271 or long name. 12272 [Steve Henson] 12273 12274 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp 12275 method only got called if p,q,dmp1,dmq1,iqmp components were present, 12276 otherwise bn_mod_exp was called. In the case of hardware keys for example 12277 no private key components need be present and it might store extra data 12278 in the RSA structure, which cannot be accessed from bn_mod_exp. 12279 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for 12280 private key operations. 12281 [Steve Henson] 12282 12283 *) Added support for SPARC Linux. 12284 [Andy Polyakov] 12285 12286 *) pem_password_cb function type incompatibly changed from 12287 typedef int pem_password_cb(char *buf, int size, int rwflag); 12288 to 12289 ....(char *buf, int size, int rwflag, void *userdata); 12290 so that applications can pass data to their callbacks: 12291 The PEM[_ASN1]_{read,write}... functions and macros now take an 12292 additional void * argument, which is just handed through whenever 12293 the password callback is called. 12294 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller] 12295 12296 New function SSL_CTX_set_default_passwd_cb_userdata. 12297 12298 Compatibility note: As many C implementations push function arguments 12299 onto the stack in reverse order, the new library version is likely to 12300 interoperate with programs that have been compiled with the old 12301 pem_password_cb definition (PEM_whatever takes some data that 12302 happens to be on the stack as its last argument, and the callback 12303 just ignores this garbage); but there is no guarantee whatsoever that 12304 this will work. 12305 12306 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=... 12307 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused 12308 problems not only on Windows, but also on some Unix platforms. 12309 To avoid problematic command lines, these definitions are now in an 12310 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl 12311 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds). 12312 [Bodo Moeller] 12313 12314 *) MIPS III/IV assembler module is reimplemented. 12315 [Andy Polyakov] 12316 12317 *) More DES library cleanups: remove references to srand/rand and 12318 delete an unused file. 12319 [Ulf Möller] 12320 12321 *) Add support for the free Netwide assembler (NASM) under Win32, 12322 since not many people have MASM (ml) and it can be hard to obtain. 12323 This is currently experimental but it seems to work OK and pass all 12324 the tests. Check out INSTALL.W32 for info. 12325 [Steve Henson] 12326 12327 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections 12328 without temporary keys kept an extra copy of the server key, 12329 and connections with temporary keys did not free everything in case 12330 of an error. 12331 [Bodo Moeller] 12332 12333 *) New function RSA_check_key and new openssl rsa option -check 12334 for verifying the consistency of RSA keys. 12335 [Ulf Moeller, Bodo Moeller] 12336 12337 *) Various changes to make Win32 compile work: 12338 1. Casts to avoid "loss of data" warnings in p5_crpt2.c 12339 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned 12340 comparison" warnings. 12341 3. Add sk_<TYPE>_sort to DEF file generator and do make update. 12342 [Steve Henson] 12343 12344 *) Add a debugging option to PKCS#5 v2 key generation function: when 12345 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and 12346 derived keys are printed to stderr. 12347 [Steve Henson] 12348 12349 *) Copy the flags in ASN1_STRING_dup(). 12350 [Roman E. Pavlov <pre@mo.msk.ru>] 12351 12352 *) The x509 application mishandled signing requests containing DSA 12353 keys when the signing key was also DSA and the parameters didn't match. 12354 12355 It was supposed to omit the parameters when they matched the signing key: 12356 the verifying software was then supposed to automatically use the CA's 12357 parameters if they were absent from the end user certificate. 12358 12359 Omitting parameters is no longer recommended. The test was also 12360 the wrong way round! This was probably due to unusual behaviour in 12361 EVP_cmp_parameters() which returns 1 if the parameters match. 12362 This meant that parameters were omitted when they *didn't* match and 12363 the certificate was useless. Certificates signed with 'ca' didn't have 12364 this bug. 12365 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>] 12366 12367 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems. 12368 The interface is as follows: 12369 Applications can use 12370 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(), 12371 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop(); 12372 "off" is now the default. 12373 The library internally uses 12374 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(), 12375 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on() 12376 to disable memory-checking temporarily. 12377 12378 Some inconsistent states that previously were possible (and were 12379 even the default) are now avoided. 12380 12381 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time 12382 with each memory chunk allocated; this is occasionally more helpful 12383 than just having a counter. 12384 12385 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID. 12386 12387 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future 12388 extensions. 12389 [Bodo Moeller] 12390 12391 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX), 12392 which largely parallels "options", but is for changing API behaviour, 12393 whereas "options" are about protocol behaviour. 12394 Initial "mode" flags are: 12395 12396 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when 12397 a single record has been written. 12398 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write 12399 retries use the same buffer location. 12400 (But all of the contents must be 12401 copied!) 12402 [Bodo Moeller] 12403 12404 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options 12405 worked. 12406 12407 *) Fix problems with no-hmac etc. 12408 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>] 12409 12410 *) New functions RSA_get_default_method(), RSA_set_method() and 12411 RSA_get_method(). These allows replacement of RSA_METHODs without having 12412 to mess around with the internals of an RSA structure. 12413 [Steve Henson] 12414 12415 *) Fix memory leaks in DSA_do_sign and DSA_is_prime. 12416 Also really enable memory leak checks in openssl.c and in some 12417 test programs. 12418 [Chad C. Mulligan, Bodo Moeller] 12419 12420 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess 12421 up the length of negative integers. This has now been simplified to just 12422 store the length when it is first determined and use it later, rather 12423 than trying to keep track of where data is copied and updating it to 12424 point to the end. 12425 [Steve Henson, reported by Brien Wheeler 12426 <bwheeler@authentica-security.com>] 12427 12428 *) Add a new function PKCS7_signatureVerify. This allows the verification 12429 of a PKCS#7 signature but with the signing certificate passed to the 12430 function itself. This contrasts with PKCS7_dataVerify which assumes the 12431 certificate is present in the PKCS#7 structure. This isn't always the 12432 case: certificates can be omitted from a PKCS#7 structure and be 12433 distributed by "out of band" means (such as a certificate database). 12434 [Steve Henson] 12435 12436 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the 12437 function prototypes in pem.h, also change util/mkdef.pl to add the 12438 necessary function names. 12439 [Steve Henson] 12440 12441 *) mk1mf.pl (used by Windows builds) did not properly read the 12442 options set by Configure in the top level Makefile, and Configure 12443 was not even able to write more than one option correctly. 12444 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended. 12445 [Bodo Moeller] 12446 12447 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config 12448 file to be loaded from a BIO or FILE pointer. The BIO version will 12449 for example allow memory BIOs to contain config info. 12450 [Steve Henson] 12451 12452 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS. 12453 Whoever hopes to achieve shared-library compatibility across versions 12454 must use this, not the compile-time macro. 12455 (Exercise 0.9.4: Which is the minimum library version required by 12456 such programs?) 12457 Note: All this applies only to multi-threaded programs, others don't 12458 need locks. 12459 [Bodo Moeller] 12460 12461 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests 12462 through a BIO pair triggered the default case, i.e. 12463 SSLerr(...,SSL_R_UNKNOWN_STATE). 12464 [Bodo Moeller] 12465 12466 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications 12467 can use the SSL library even if none of the specific BIOs is 12468 appropriate. 12469 [Bodo Moeller] 12470 12471 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value 12472 for the encoded length. 12473 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>] 12474 12475 *) Add initial documentation of the X509V3 functions. 12476 [Steve Henson] 12477 12478 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and 12479 PEM_write_bio_PKCS8PrivateKey() that are equivalent to 12480 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more 12481 secure PKCS#8 private key format with a high iteration count. 12482 [Steve Henson] 12483 12484 *) Fix determination of Perl interpreter: A perl or perl5 12485 _directory_ in $PATH was also accepted as the interpreter. 12486 [Ralf S. Engelschall] 12487 12488 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking 12489 wrong with it but it was very old and did things like calling 12490 PEM_ASN1_read() directly and used MD5 for the hash not to mention some 12491 unusual formatting. 12492 [Steve Henson] 12493 12494 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed 12495 to use the new extension code. 12496 [Steve Henson] 12497 12498 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c 12499 with macros. This should make it easier to change their form, add extra 12500 arguments etc. Fix a few PEM prototypes which didn't have cipher as a 12501 constant. 12502 [Steve Henson] 12503 12504 *) Add to configuration table a new entry that can specify an alternative 12505 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep, 12506 according to Mark Crispin <MRC@Panda.COM>. 12507 [Bodo Moeller] 12508 12509#if 0 12510 *) DES CBC did not update the IV. Weird. 12511 [Ben Laurie] 12512#else 12513 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does. 12514 Changing the behaviour of the former might break existing programs -- 12515 where IV updating is needed, des_ncbc_encrypt can be used. 12516#endif 12517 12518 *) When bntest is run from "make test" it drives bc to check its 12519 calculations, as well as internally checking them. If an internal check 12520 fails, it needs to cause bc to give a non-zero result or make test carries 12521 on without noticing the failure. Fixed. 12522 [Ben Laurie] 12523 12524 *) DES library cleanups. 12525 [Ulf Möller] 12526 12527 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be 12528 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit 12529 ciphers. NOTE: although the key derivation function has been verified 12530 against some published test vectors it has not been extensively tested 12531 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use 12532 of v2.0. 12533 [Steve Henson] 12534 12535 *) Instead of "mkdir -p", which is not fully portable, use new 12536 Perl script "util/mkdir-p.pl". 12537 [Bodo Moeller] 12538 12539 *) Rewrite the way password based encryption (PBE) is handled. It used to 12540 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter 12541 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms 12542 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now 12543 the 'parameter' field of the AlgorithmIdentifier is passed to the 12544 underlying key generation function so it must do its own ASN1 parsing. 12545 This has also changed the EVP_PBE_CipherInit() function which now has a 12546 'parameter' argument instead of literal salt and iteration count values 12547 and the function EVP_PBE_ALGOR_CipherInit() has been deleted. 12548 [Steve Henson] 12549 12550 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms 12551 and PKCS#8 functionality. New 'pkcs8' application linked to openssl. 12552 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE 12553 KEY" because this clashed with PKCS#8 unencrypted string. Since this 12554 value was just used as a "magic string" and not used directly its 12555 value doesn't matter. 12556 [Steve Henson] 12557 12558 *) Introduce some semblance of const correctness to BN. Shame C doesn't 12559 support mutable. 12560 [Ben Laurie] 12561 12562 *) "linux-sparc64" configuration (ultrapenguin). 12563 [Ray Miller <ray.miller@oucs.ox.ac.uk>] 12564 "linux-sparc" configuration. 12565 [Christian Forster <fo@hawo.stw.uni-erlangen.de>] 12566 12567 *) config now generates no-xxx options for missing ciphers. 12568 [Ulf Möller] 12569 12570 *) Support the EBCDIC character set (work in progress). 12571 File ebcdic.c not yet included because it has a different license. 12572 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 12573 12574 *) Support BS2000/OSD-POSIX. 12575 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 12576 12577 *) Make callbacks for key generation use void * instead of char *. 12578 [Ben Laurie] 12579 12580 *) Make S/MIME samples compile (not yet tested). 12581 [Ben Laurie] 12582 12583 *) Additional typesafe stacks. 12584 [Ben Laurie] 12585 12586 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x). 12587 [Bodo Moeller] 12588 12589 12590 Changes between 0.9.3 and 0.9.3a [29 May 1999] 12591 12592 *) New configuration variant "sco5-gcc". 12593 12594 *) Updated some demos. 12595 [Sean O Riordain, Wade Scholine] 12596 12597 *) Add missing BIO_free at exit of pkcs12 application. 12598 [Wu Zhigang] 12599 12600 *) Fix memory leak in conf.c. 12601 [Steve Henson] 12602 12603 *) Updates for Win32 to assembler version of MD5. 12604 [Steve Henson] 12605 12606 *) Set #! path to perl in apps/der_chop to where we found it 12607 instead of using a fixed path. 12608 [Bodo Moeller] 12609 12610 *) SHA library changes for irix64-mips4-cc. 12611 [Andy Polyakov] 12612 12613 *) Improvements for VMS support. 12614 [Richard Levitte] 12615 12616 12617 Changes between 0.9.2b and 0.9.3 [24 May 1999] 12618 12619 *) Bignum library bug fix. IRIX 6 passes "make test" now! 12620 This also avoids the problems with SC4.2 and unpatched SC5. 12621 [Andy Polyakov <appro@fy.chalmers.se>] 12622 12623 *) New functions sk_num, sk_value and sk_set to replace the previous macros. 12624 These are required because of the typesafe stack would otherwise break 12625 existing code. If old code used a structure member which used to be STACK 12626 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with 12627 sk_num or sk_value it would produce an error because the num, data members 12628 are not present in STACK_OF. Now it just produces a warning. sk_set 12629 replaces the old method of assigning a value to sk_value 12630 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code 12631 that does this will no longer work (and should use sk_set instead) but 12632 this could be regarded as a "questionable" behaviour anyway. 12633 [Steve Henson] 12634 12635 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now 12636 correctly handle encrypted S/MIME data. 12637 [Steve Henson] 12638 12639 *) Change type of various DES function arguments from des_cblock 12640 (which means, in function argument declarations, pointer to char) 12641 to des_cblock * (meaning pointer to array with 8 char elements), 12642 which allows the compiler to do more typechecking; it was like 12643 that back in SSLeay, but with lots of ugly casts. 12644 12645 Introduce new type const_des_cblock. 12646 [Bodo Moeller] 12647 12648 *) Reorganise the PKCS#7 library and get rid of some of the more obvious 12649 problems: find RecipientInfo structure that matches recipient certificate 12650 and initialise the ASN1 structures properly based on passed cipher. 12651 [Steve Henson] 12652 12653 *) Belatedly make the BN tests actually check the results. 12654 [Ben Laurie] 12655 12656 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion 12657 to and from BNs: it was completely broken. New compilation option 12658 NEG_PUBKEY_BUG to allow for some broken certificates that encode public 12659 key elements as negative integers. 12660 [Steve Henson] 12661 12662 *) Reorganize and speed up MD5. 12663 [Andy Polyakov <appro@fy.chalmers.se>] 12664 12665 *) VMS support. 12666 [Richard Levitte <richard@levitte.org>] 12667 12668 *) New option -out to asn1parse to allow the parsed structure to be 12669 output to a file. This is most useful when combined with the -strparse 12670 option to examine the output of things like OCTET STRINGS. 12671 [Steve Henson] 12672 12673 *) Make SSL library a little more fool-proof by not requiring any longer 12674 that SSL_set_{accept,connect}_state be called before 12675 SSL_{accept,connect} may be used (SSL_set_..._state is omitted 12676 in many applications because usually everything *appeared* to work as 12677 intended anyway -- now it really works as intended). 12678 [Bodo Moeller] 12679 12680 *) Move openssl.cnf out of lib/. 12681 [Ulf Möller] 12682 12683 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall 12684 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes 12685 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+ 12686 [Ralf S. Engelschall] 12687 12688 *) Various fixes to the EVP and PKCS#7 code. It may now be able to 12689 handle PKCS#7 enveloped data properly. 12690 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve] 12691 12692 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of 12693 copying pointers. The cert_st handling is changed by this in 12694 various ways (and thus what used to be known as ctx->default_cert 12695 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert 12696 any longer when s->cert does not give us what we need). 12697 ssl_cert_instantiate becomes obsolete by this change. 12698 As soon as we've got the new code right (possibly it already is?), 12699 we have solved a couple of bugs of the earlier code where s->cert 12700 was used as if it could not have been shared with other SSL structures. 12701 12702 Note that using the SSL API in certain dirty ways now will result 12703 in different behaviour than observed with earlier library versions: 12704 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx) 12705 does not influence s as it used to. 12706 12707 In order to clean up things more thoroughly, inside SSL_SESSION 12708 we don't use CERT any longer, but a new structure SESS_CERT 12709 that holds per-session data (if available); currently, this is 12710 the peer's certificate chain and, for clients, the server's certificate 12711 and temporary key. CERT holds only those values that can have 12712 meaningful defaults in an SSL_CTX. 12713 [Bodo Moeller] 12714 12715 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure 12716 from the internal representation. Various PKCS#7 fixes: remove some 12717 evil casts and set the enc_dig_alg field properly based on the signing 12718 key type. 12719 [Steve Henson] 12720 12721 *) Allow PKCS#12 password to be set from the command line or the 12722 environment. Let 'ca' get its config file name from the environment 12723 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req' 12724 and 'x509'). 12725 [Steve Henson] 12726 12727 *) Allow certificate policies extension to use an IA5STRING for the 12728 organization field. This is contrary to the PKIX definition but 12729 VeriSign uses it and IE5 only recognises this form. Document 'x509' 12730 extension option. 12731 [Steve Henson] 12732 12733 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic, 12734 without disallowing inline assembler and the like for non-pedantic builds. 12735 [Ben Laurie] 12736 12737 *) Support Borland C++ builder. 12738 [Janez Jere <jj@void.si>, modified by Ulf Möller] 12739 12740 *) Support Mingw32. 12741 [Ulf Möller] 12742 12743 *) SHA-1 cleanups and performance enhancements. 12744 [Andy Polyakov <appro@fy.chalmers.se>] 12745 12746 *) Sparc v8plus assembler for the bignum library. 12747 [Andy Polyakov <appro@fy.chalmers.se>] 12748 12749 *) Accept any -xxx and +xxx compiler options in Configure. 12750 [Ulf Möller] 12751 12752 *) Update HPUX configuration. 12753 [Anonymous] 12754 12755 *) Add missing sk_<type>_unshift() function to safestack.h 12756 [Ralf S. Engelschall] 12757 12758 *) New function SSL_CTX_use_certificate_chain_file that sets the 12759 "extra_cert"s in addition to the certificate. (This makes sense 12760 only for "PEM" format files, as chains as a whole are not 12761 DER-encoded.) 12762 [Bodo Moeller] 12763 12764 *) Support verify_depth from the SSL API. 12765 x509_vfy.c had what can be considered an off-by-one-error: 12766 Its depth (which was not part of the external interface) 12767 was actually counting the number of certificates in a chain; 12768 now it really counts the depth. 12769 [Bodo Moeller] 12770 12771 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used 12772 instead of X509err, which often resulted in confusing error 12773 messages since the error codes are not globally unique 12774 (e.g. an alleged error in ssl3_accept when a certificate 12775 didn't match the private key). 12776 12777 *) New function SSL_CTX_set_session_id_context that allows to set a default 12778 value (so that you don't need SSL_set_session_id_context for each 12779 connection using the SSL_CTX). 12780 [Bodo Moeller] 12781 12782 *) OAEP decoding bug fix. 12783 [Ulf Möller] 12784 12785 *) Support INSTALL_PREFIX for package builders, as proposed by 12786 David Harris. 12787 [Bodo Moeller] 12788 12789 *) New Configure options "threads" and "no-threads". For systems 12790 where the proper compiler options are known (currently Solaris 12791 and Linux), "threads" is the default. 12792 [Bodo Moeller] 12793 12794 *) New script util/mklink.pl as a faster substitute for util/mklink.sh. 12795 [Bodo Moeller] 12796 12797 *) Install various scripts to $(OPENSSLDIR)/misc, not to 12798 $(INSTALLTOP)/bin -- they shouldn't clutter directories 12799 such as /usr/local/bin. 12800 [Bodo Moeller] 12801 12802 *) "make linux-shared" to build shared libraries. 12803 [Niels Poppe <niels@netbox.org>] 12804 12805 *) New Configure option no-<cipher> (rsa, idea, rc5, ...). 12806 [Ulf Möller] 12807 12808 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for 12809 extension adding in x509 utility. 12810 [Steve Henson] 12811 12812 *) Remove NOPROTO sections and error code comments. 12813 [Ulf Möller] 12814 12815 *) Partial rewrite of the DEF file generator to now parse the ANSI 12816 prototypes. 12817 [Steve Henson] 12818 12819 *) New Configure options --prefix=DIR and --openssldir=DIR. 12820 [Ulf Möller] 12821 12822 *) Complete rewrite of the error code script(s). It is all now handled 12823 by one script at the top level which handles error code gathering, 12824 header rewriting and C source file generation. It should be much better 12825 than the old method: it now uses a modified version of Ulf's parser to 12826 read the ANSI prototypes in all header files (thus the old K&R definitions 12827 aren't needed for error creation any more) and do a better job of 12828 translating function codes into names. The old 'ASN1 error code embedded 12829 in a comment' is no longer necessary and it doesn't use .err files which 12830 have now been deleted. Also the error code call doesn't have to appear all 12831 on one line (which resulted in some large lines...). 12832 [Steve Henson] 12833 12834 *) Change #include filenames from <foo.h> to <openssl/foo.h>. 12835 [Bodo Moeller] 12836 12837 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return 12838 0 (which usually indicates a closed connection), but continue reading. 12839 [Bodo Moeller] 12840 12841 *) Fix some race conditions. 12842 [Bodo Moeller] 12843 12844 *) Add support for CRL distribution points extension. Add Certificate 12845 Policies and CRL distribution points documentation. 12846 [Steve Henson] 12847 12848 *) Move the autogenerated header file parts to crypto/opensslconf.h. 12849 [Ulf Möller] 12850 12851 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of 12852 8 of keying material. Merlin has also confirmed interop with this fix 12853 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0. 12854 [Merlin Hughes <merlin@baltimore.ie>] 12855 12856 *) Fix lots of warnings. 12857 [Richard Levitte <levitte@stacken.kth.se>] 12858 12859 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if 12860 the directory spec didn't end with a LIST_SEPARATOR_CHAR. 12861 [Richard Levitte <levitte@stacken.kth.se>] 12862 12863 *) Fix problems with sizeof(long) == 8. 12864 [Andy Polyakov <appro@fy.chalmers.se>] 12865 12866 *) Change functions to ANSI C. 12867 [Ulf Möller] 12868 12869 *) Fix typos in error codes. 12870 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller] 12871 12872 *) Remove defunct assembler files from Configure. 12873 [Ulf Möller] 12874 12875 *) SPARC v8 assembler BIGNUM implementation. 12876 [Andy Polyakov <appro@fy.chalmers.se>] 12877 12878 *) Support for Certificate Policies extension: both print and set. 12879 Various additions to support the r2i method this uses. 12880 [Steve Henson] 12881 12882 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could 12883 return a const string when you are expecting an allocated buffer. 12884 [Ben Laurie] 12885 12886 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE 12887 types DirectoryString and DisplayText. 12888 [Steve Henson] 12889 12890 *) Add code to allow r2i extensions to access the configuration database, 12891 add an LHASH database driver and add several ctx helper functions. 12892 [Steve Henson] 12893 12894 *) Fix an evil bug in bn_expand2() which caused various BN functions to 12895 fail when they extended the size of a BIGNUM. 12896 [Steve Henson] 12897 12898 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to 12899 support typesafe stack. 12900 [Steve Henson] 12901 12902 *) Fix typo in SSL_[gs]et_options(). 12903 [Nils Frostberg <nils@medcom.se>] 12904 12905 *) Delete various functions and files that belonged to the (now obsolete) 12906 old X509V3 handling code. 12907 [Steve Henson] 12908 12909 *) New Configure option "rsaref". 12910 [Ulf Möller] 12911 12912 *) Don't auto-generate pem.h. 12913 [Bodo Moeller] 12914 12915 *) Introduce type-safe ASN.1 SETs. 12916 [Ben Laurie] 12917 12918 *) Convert various additional casted stacks to type-safe STACK_OF() variants. 12919 [Ben Laurie, Ralf S. Engelschall, Steve Henson] 12920 12921 *) Introduce type-safe STACKs. This will almost certainly break lots of code 12922 that links with OpenSSL (well at least cause lots of warnings), but fear 12923 not: the conversion is trivial, and it eliminates loads of evil casts. A 12924 few STACKed things have been converted already. Feel free to convert more. 12925 In the fullness of time, I'll do away with the STACK type altogether. 12926 [Ben Laurie] 12927 12928 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate 12929 specified in <certfile> by updating the entry in the index.txt file. 12930 This way one no longer has to edit the index.txt file manually for 12931 revoking a certificate. The -revoke option does the gory details now. 12932 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall] 12933 12934 *) Fix `openssl crl -noout -text' combination where `-noout' killed the 12935 `-text' option at all and this way the `-noout -text' combination was 12936 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'. 12937 [Ralf S. Engelschall] 12938 12939 *) Make sure a corresponding plain text error message exists for the 12940 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a 12941 verify callback function determined that a certificate was revoked. 12942 [Ralf S. Engelschall] 12943 12944 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for 12945 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test 12946 all available ciphers including rc5, which was forgotten until now. 12947 In order to let the testing shell script know which algorithms 12948 are available, a new (up to now undocumented) command 12949 "openssl list-cipher-commands" is used. 12950 [Bodo Moeller] 12951 12952 *) Bugfix: s_client occasionally would sleep in select() when 12953 it should have checked SSL_pending() first. 12954 [Bodo Moeller] 12955 12956 *) New functions DSA_do_sign and DSA_do_verify to provide access to 12957 the raw DSA values prior to ASN.1 encoding. 12958 [Ulf Möller] 12959 12960 *) Tweaks to Configure 12961 [Niels Poppe <niels@netbox.org>] 12962 12963 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support, 12964 yet... 12965 [Steve Henson] 12966 12967 *) New variables $(RANLIB) and $(PERL) in the Makefiles. 12968 [Ulf Möller] 12969 12970 *) New config option to avoid instructions that are illegal on the 80386. 12971 The default code is faster, but requires at least a 486. 12972 [Ulf Möller] 12973 12974 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and 12975 SSL2_SERVER_VERSION (not used at all) macros, which are now the 12976 same as SSL2_VERSION anyway. 12977 [Bodo Moeller] 12978 12979 *) New "-showcerts" option for s_client. 12980 [Bodo Moeller] 12981 12982 *) Still more PKCS#12 integration. Add pkcs12 application to openssl 12983 application. Various cleanups and fixes. 12984 [Steve Henson] 12985 12986 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and 12987 modify error routines to work internally. Add error codes and PBE init 12988 to library startup routines. 12989 [Steve Henson] 12990 12991 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and 12992 packing functions to asn1 and evp. Changed function names and error 12993 codes along the way. 12994 [Steve Henson] 12995 12996 *) PKCS12 integration: and so it begins... First of several patches to 12997 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12 12998 objects to objects.h 12999 [Steve Henson] 13000 13001 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1 13002 and display support for Thawte strong extranet extension. 13003 [Steve Henson] 13004 13005 *) Add LinuxPPC support. 13006 [Jeff Dubrule <igor@pobox.org>] 13007 13008 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to 13009 bn_div_words in alpha.s. 13010 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie] 13011 13012 *) Make sure the RSA OAEP test is skipped under -DRSAref because 13013 OAEP isn't supported when OpenSSL is built with RSAref. 13014 [Ulf Moeller <ulf@fitug.de>] 13015 13016 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h 13017 so they no longer are missing under -DNOPROTO. 13018 [Soren S. Jorvang <soren@t.dk>] 13019 13020 13021 Changes between 0.9.1c and 0.9.2b [22 Mar 1999] 13022 13023 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still 13024 doesn't work when the session is reused. Coming soon! 13025 [Ben Laurie] 13026 13027 *) Fix a security hole, that allows sessions to be reused in the wrong 13028 context thus bypassing client cert protection! All software that uses 13029 client certs and session caches in multiple contexts NEEDS PATCHING to 13030 allow session reuse! A fuller solution is in the works. 13031 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)] 13032 13033 *) Some more source tree cleanups (removed obsolete files 13034 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed 13035 permission on "config" script to be executable) and a fix for the INSTALL 13036 document. 13037 [Ulf Moeller <ulf@fitug.de>] 13038 13039 *) Remove some legacy and erroneous uses of malloc, free instead of 13040 Malloc, Free. 13041 [Lennart Bang <lob@netstream.se>, with minor changes by Steve] 13042 13043 *) Make rsa_oaep_test return non-zero on error. 13044 [Ulf Moeller <ulf@fitug.de>] 13045 13046 *) Add support for native Solaris shared libraries. Configure 13047 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice 13048 if someone would make that last step automatic. 13049 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>] 13050 13051 *) ctx_size was not built with the right compiler during "make links". Fixed. 13052 [Ben Laurie] 13053 13054 *) Change the meaning of 'ALL' in the cipher list. It now means "everything 13055 except NULL ciphers". This means the default cipher list will no longer 13056 enable NULL ciphers. They need to be specifically enabled e.g. with 13057 the string "DEFAULT:eNULL". 13058 [Steve Henson] 13059 13060 *) Fix to RSA private encryption routines: if p < q then it would 13061 occasionally produce an invalid result. This will only happen with 13062 externally generated keys because OpenSSL (and SSLeay) ensure p > q. 13063 [Steve Henson] 13064 13065 *) Be less restrictive and allow also `perl util/perlpath.pl 13066 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin', 13067 because this way one can also use an interpreter named `perl5' (which is 13068 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still 13069 installed as `perl'). 13070 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 13071 13072 *) Let util/clean-depend.pl work also with older Perl 5.00x versions. 13073 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 13074 13075 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add 13076 advapi32.lib to Win32 build and change the pem test comparison 13077 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the 13078 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h 13079 and crypto/des/ede_cbcm_enc.c. 13080 [Steve Henson] 13081 13082 *) DES quad checksum was broken on big-endian architectures. Fixed. 13083 [Ben Laurie] 13084 13085 *) Comment out two functions in bio.h that aren't implemented. Fix up the 13086 Win32 test batch file so it (might) work again. The Win32 test batch file 13087 is horrible: I feel ill.... 13088 [Steve Henson] 13089 13090 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected 13091 in e_os.h. Audit of header files to check ANSI and non ANSI 13092 sections: 10 functions were absent from non ANSI section and not exported 13093 from Windows DLLs. Fixed up libeay.num for new functions. 13094 [Steve Henson] 13095 13096 *) Make `openssl version' output lines consistent. 13097 [Ralf S. Engelschall] 13098 13099 *) Fix Win32 symbol export lists for BIO functions: Added 13100 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data 13101 to ms/libeay{16,32}.def. 13102 [Ralf S. Engelschall] 13103 13104 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled 13105 fine under Unix and passes some trivial tests I've now added. But the 13106 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was 13107 added to make sure no one expects that this stuff really works in the 13108 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources 13109 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and 13110 openssl_bio.xs. 13111 [Ralf S. Engelschall] 13112 13113 *) Fix the generation of two part addresses in perl. 13114 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie] 13115 13116 *) Add config entry for Linux on MIPS. 13117 [John Tobey <jtobey@channel1.com>] 13118 13119 *) Make links whenever Configure is run, unless we are on Windoze. 13120 [Ben Laurie] 13121 13122 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf. 13123 Currently only issuerAltName and AuthorityKeyIdentifier make any sense 13124 in CRLs. 13125 [Steve Henson] 13126 13127 *) Add a useful kludge to allow package maintainers to specify compiler and 13128 other platforms details on the command line without having to patch the 13129 Configure script every time: One now can use ``perl Configure 13130 <id>:<details>'', i.e. platform ids are allowed to have details appended 13131 to them (separated by colons). This is treated as there would be a static 13132 pre-configured entry in Configure's %table under key <id> with value 13133 <details> and ``perl Configure <id>'' is called. So, when you want to 13134 perform a quick test-compile under FreeBSD 3.1 with pgcc and without 13135 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"'' 13136 now, which overrides the FreeBSD-elf entry on-the-fly. 13137 [Ralf S. Engelschall] 13138 13139 *) Disable new TLS1 ciphersuites by default: they aren't official yet. 13140 [Ben Laurie] 13141 13142 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified 13143 on the `perl Configure ...' command line. This way one can compile 13144 OpenSSL libraries with Position Independent Code (PIC) which is needed 13145 for linking it into DSOs. 13146 [Ralf S. Engelschall] 13147 13148 *) Remarkably, export ciphers were totally broken and no-one had noticed! 13149 Fixed. 13150 [Ben Laurie] 13151 13152 *) Cleaned up the LICENSE document: The official contact for any license 13153 questions now is the OpenSSL core team under openssl-core@openssl.org. 13154 And add a paragraph about the dual-license situation to make sure people 13155 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply 13156 to the OpenSSL toolkit. 13157 [Ralf S. Engelschall] 13158 13159 *) General source tree makefile cleanups: Made `making xxx in yyy...' 13160 display consistent in the source tree and replaced `/bin/rm' by `rm'. 13161 Additionally cleaned up the `make links' target: Remove unnecessary 13162 semicolons, subsequent redundant removes, inline point.sh into mklink.sh 13163 to speed processing and no longer clutter the display with confusing 13164 stuff. Instead only the actually done links are displayed. 13165 [Ralf S. Engelschall] 13166 13167 *) Permit null encryption ciphersuites, used for authentication only. It used 13168 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this. 13169 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null 13170 encryption. 13171 [Ben Laurie] 13172 13173 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder 13174 signed attributes when verifying signatures (this would break them), 13175 the detached data encoding was wrong and public keys obtained using 13176 X509_get_pubkey() weren't freed. 13177 [Steve Henson] 13178 13179 *) Add text documentation for the BUFFER functions. Also added a work around 13180 to a Win95 console bug. This was triggered by the password read stuff: the 13181 last character typed gets carried over to the next fread(). If you were 13182 generating a new cert request using 'req' for example then the last 13183 character of the passphrase would be CR which would then enter the first 13184 field as blank. 13185 [Steve Henson] 13186 13187 *) Added the new `Includes OpenSSL Cryptography Software' button as 13188 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay 13189 button and can be used by applications based on OpenSSL to show the 13190 relationship to the OpenSSL project. 13191 [Ralf S. Engelschall] 13192 13193 *) Remove confusing variables in function signatures in files 13194 ssl/ssl_lib.c and ssl/ssl.h. 13195 [Lennart Bong <lob@kulthea.stacken.kth.se>] 13196 13197 *) Don't install bss_file.c under PREFIX/include/ 13198 [Lennart Bong <lob@kulthea.stacken.kth.se>] 13199 13200 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle 13201 functions that return function pointers and has support for NT specific 13202 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various 13203 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from 13204 unsigned to signed types: this was killing the Win32 compile. 13205 [Steve Henson] 13206 13207 *) Add new certificate file to stack functions, 13208 SSL_add_dir_cert_subjects_to_stack() and 13209 SSL_add_file_cert_subjects_to_stack(). These largely supplant 13210 SSL_load_client_CA_file(), and can be used to add multiple certs easily 13211 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()). 13212 This means that Apache-SSL and similar packages don't have to mess around 13213 to add as many CAs as they want to the preferred list. 13214 [Ben Laurie] 13215 13216 *) Experiment with doxygen documentation. Currently only partially applied to 13217 ssl/ssl_lib.c. 13218 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with 13219 openssl.doxy as the configuration file. 13220 [Ben Laurie] 13221 13222 *) Get rid of remaining C++-style comments which strict C compilers hate. 13223 [Ralf S. Engelschall, pointed out by Carlos Amengual] 13224 13225 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not 13226 compiled in by default: it has problems with large keys. 13227 [Steve Henson] 13228 13229 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and 13230 DH private keys and/or callback functions which directly correspond to 13231 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This 13232 is needed for applications which have to configure certificates on a 13233 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis 13234 (e.g. s_server). 13235 For the RSA certificate situation is makes no difference, but 13236 for the DSA certificate situation this fixes the "no shared cipher" 13237 problem where the OpenSSL cipher selection procedure failed because the 13238 temporary keys were not overtaken from the context and the API provided 13239 no way to reconfigure them. 13240 The new functions now let applications reconfigure the stuff and they 13241 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh, 13242 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new 13243 non-public-API function ssl_cert_instantiate() is used as a helper 13244 function and also to reduce code redundancy inside ssl_rsa.c. 13245 [Ralf S. Engelschall] 13246 13247 *) Move s_server -dcert and -dkey options out of the undocumented feature 13248 area because they are useful for the DSA situation and should be 13249 recognized by the users. 13250 [Ralf S. Engelschall] 13251 13252 *) Fix the cipher decision scheme for export ciphers: the export bits are 13253 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within 13254 SSL_EXP_MASK. So, the original variable has to be used instead of the 13255 already masked variable. 13256 [Richard Levitte <levitte@stacken.kth.se>] 13257 13258 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c 13259 [Richard Levitte <levitte@stacken.kth.se>] 13260 13261 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal() 13262 from `int' to `unsigned int' because it's a length and initialized by 13263 EVP_DigestFinal() which expects an `unsigned int *'. 13264 [Richard Levitte <levitte@stacken.kth.se>] 13265 13266 *) Don't hard-code path to Perl interpreter on shebang line of Configure 13267 script. Instead use the usual Shell->Perl transition trick. 13268 [Ralf S. Engelschall] 13269 13270 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates 13271 (in addition to RSA certificates) to match the behaviour of `openssl dsa 13272 -noout -modulus' as it's already the case for `openssl rsa -noout 13273 -modulus'. For RSA the -modulus is the real "modulus" while for DSA 13274 currently the public key is printed (a decision which was already done by 13275 `openssl dsa -modulus' in the past) which serves a similar purpose. 13276 Additionally the NO_RSA no longer completely removes the whole -modulus 13277 option; it now only avoids using the RSA stuff. Same applies to NO_DSA 13278 now, too. 13279 [Ralf S. Engelschall] 13280 13281 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested 13282 BIO. See the source (crypto/evp/bio_ok.c) for more info. 13283 [Arne Ansper <arne@ats.cyber.ee>] 13284 13285 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs 13286 to be added. Now both 'req' and 'ca' can use new objects defined in the 13287 config file. 13288 [Steve Henson] 13289 13290 *) Add cool BIO that does syslog (or event log on NT). 13291 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie] 13292 13293 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5, 13294 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and 13295 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher 13296 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt. 13297 [Ben Laurie] 13298 13299 *) Add preliminary config info for new extension code. 13300 [Steve Henson] 13301 13302 *) Make RSA_NO_PADDING really use no padding. 13303 [Ulf Moeller <ulf@fitug.de>] 13304 13305 *) Generate errors when private/public key check is done. 13306 [Ben Laurie] 13307 13308 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support 13309 for some CRL extensions and new objects added. 13310 [Steve Henson] 13311 13312 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private 13313 key usage extension and fuller support for authority key id. 13314 [Steve Henson] 13315 13316 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved 13317 padding method for RSA, which is recommended for new applications in PKCS 13318 #1 v2.0 (RFC 2437, October 1998). 13319 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical 13320 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure 13321 against Bleichbacher's attack on RSA. 13322 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by 13323 Ben Laurie] 13324 13325 *) Updates to the new SSL compression code 13326 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 13327 13328 *) Fix so that the version number in the master secret, when passed 13329 via RSA, checks that if TLS was proposed, but we roll back to SSLv3 13330 (because the server will not accept higher), that the version number 13331 is 0x03,0x01, not 0x03,0x00 13332 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 13333 13334 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory 13335 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes 13336 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c 13337 [Steve Henson] 13338 13339 *) Support for RAW extensions where an arbitrary extension can be 13340 created by including its DER encoding. See apps/openssl.cnf for 13341 an example. 13342 [Steve Henson] 13343 13344 *) Make sure latest Perl versions don't interpret some generated C array 13345 code as Perl array code in the crypto/err/err_genc.pl script. 13346 [Lars Weber <3weber@informatik.uni-hamburg.de>] 13347 13348 *) Modify ms/do_ms.bat to not generate assembly language makefiles since 13349 not many people have the assembler. Various Win32 compilation fixes and 13350 update to the INSTALL.W32 file with (hopefully) more accurate Win32 13351 build instructions. 13352 [Steve Henson] 13353 13354 *) Modify configure script 'Configure' to automatically create crypto/date.h 13355 file under Win32 and also build pem.h from pem.org. New script 13356 util/mkfiles.pl to create the MINFO file on environments that can't do a 13357 'make files': perl util/mkfiles.pl >MINFO should work. 13358 [Steve Henson] 13359 13360 *) Major rework of DES function declarations, in the pursuit of correctness 13361 and purity. As a result, many evil casts evaporated, and some weirdness, 13362 too. You may find this causes warnings in your code. Zapping your evil 13363 casts will probably fix them. Mostly. 13364 [Ben Laurie] 13365 13366 *) Fix for a typo in asn1.h. Bug fix to object creation script 13367 obj_dat.pl. It considered a zero in an object definition to mean 13368 "end of object": none of the objects in objects.h have any zeros 13369 so it wasn't spotted. 13370 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>] 13371 13372 *) Add support for Triple DES Cipher Block Chaining with Output Feedback 13373 Masking (CBCM). In the absence of test vectors, the best I have been able 13374 to do is check that the decrypt undoes the encrypt, so far. Send me test 13375 vectors if you have them. 13376 [Ben Laurie] 13377 13378 *) Correct calculation of key length for export ciphers (too much space was 13379 allocated for null ciphers). This has not been tested! 13380 [Ben Laurie] 13381 13382 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage 13383 message is now correct (it understands "crypto" and "ssl" on its 13384 command line). There is also now an "update" option. This will update 13385 the util/ssleay.num and util/libeay.num files with any new functions. 13386 If you do a: 13387 perl util/mkdef.pl crypto ssl update 13388 it will update them. 13389 [Steve Henson] 13390 13391 *) Overhauled the Perl interface (perl/*): 13392 - ported BN stuff to OpenSSL's different BN library 13393 - made the perl/ source tree CVS-aware 13394 - renamed the package from SSLeay to OpenSSL (the files still contain 13395 their history because I've copied them in the repository) 13396 - removed obsolete files (the test scripts will be replaced 13397 by better Test::Harness variants in the future) 13398 [Ralf S. Engelschall] 13399 13400 *) First cut for a very conservative source tree cleanup: 13401 1. merge various obsolete readme texts into doc/ssleay.txt 13402 where we collect the old documents and readme texts. 13403 2. remove the first part of files where I'm already sure that we no 13404 longer need them because of three reasons: either they are just temporary 13405 files which were left by Eric or they are preserved original files where 13406 I've verified that the diff is also available in the CVS via "cvs diff 13407 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for 13408 the crypto/md/ stuff). 13409 [Ralf S. Engelschall] 13410 13411 *) More extension code. Incomplete support for subject and issuer alt 13412 name, issuer and authority key id. Change the i2v function parameters 13413 and add an extra 'crl' parameter in the X509V3_CTX structure: guess 13414 what that's for :-) Fix to ASN1 macro which messed up 13415 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED. 13416 [Steve Henson] 13417 13418 *) Preliminary support for ENUMERATED type. This is largely copied from the 13419 INTEGER code. 13420 [Steve Henson] 13421 13422 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy. 13423 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 13424 13425 *) Make sure `make rehash' target really finds the `openssl' program. 13426 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 13427 13428 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd 13429 like to hear about it if this slows down other processors. 13430 [Ben Laurie] 13431 13432 *) Add CygWin32 platform information to Configure script. 13433 [Alan Batie <batie@aahz.jf.intel.com>] 13434 13435 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm' 13436 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>] 13437 13438 *) New program nseq to manipulate netscape certificate sequences 13439 [Steve Henson] 13440 13441 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a 13442 few typos. 13443 [Steve Henson] 13444 13445 *) Fixes to BN code. Previously the default was to define BN_RECURSION 13446 but the BN code had some problems that would cause failures when 13447 doing certificate verification and some other functions. 13448 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 13449 13450 *) Add ASN1 and PEM code to support netscape certificate sequences. 13451 [Steve Henson] 13452 13453 *) Add ASN1 and PEM code to support netscape certificate sequences. 13454 [Steve Henson] 13455 13456 *) Add several PKIX and private extended key usage OIDs. 13457 [Steve Henson] 13458 13459 *) Modify the 'ca' program to handle the new extension code. Modify 13460 openssl.cnf for new extension format, add comments. 13461 [Steve Henson] 13462 13463 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req' 13464 and add a sample to openssl.cnf so req -x509 now adds appropriate 13465 CA extensions. 13466 [Steve Henson] 13467 13468 *) Continued X509 V3 changes. Add to other makefiles, integrate with the 13469 error code, add initial support to X509_print() and x509 application. 13470 [Steve Henson] 13471 13472 *) Takes a deep breath and start adding X509 V3 extension support code. Add 13473 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this 13474 stuff is currently isolated and isn't even compiled yet. 13475 [Steve Henson] 13476 13477 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL 13478 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print. 13479 Removed the versions check from X509 routines when loading extensions: 13480 this allows certain broken certificates that don't set the version 13481 properly to be processed. 13482 [Steve Henson] 13483 13484 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another 13485 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which 13486 can still be regenerated with "make depend". 13487 [Ben Laurie] 13488 13489 *) Spelling mistake in C version of CAST-128. 13490 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>] 13491 13492 *) Changes to the error generation code. The perl script err-code.pl 13493 now reads in the old error codes and retains the old numbers, only 13494 adding new ones if necessary. It also only changes the .err files if new 13495 codes are added. The makefiles have been modified to only insert errors 13496 when needed (to avoid needlessly modifying header files). This is done 13497 by only inserting errors if the .err file is newer than the auto generated 13498 C file. To rebuild all the error codes from scratch (the old behaviour) 13499 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl 13500 or delete all the .err files. 13501 [Steve Henson] 13502 13503 *) CAST-128 was incorrectly implemented for short keys. The C version has 13504 been fixed, but is untested. The assembler versions are also fixed, but 13505 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing 13506 to regenerate it if needed. 13507 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun 13508 Hagino <itojun@kame.net>] 13509 13510 *) File was opened incorrectly in randfile.c. 13511 [Ulf Möller <ulf@fitug.de>] 13512 13513 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print 13514 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or 13515 GeneralizedTime. ASN1_TIME is the proper type used in certificates et 13516 al: it's just almost always a UTCTime. Note this patch adds new error 13517 codes so do a "make errors" if there are problems. 13518 [Steve Henson] 13519 13520 *) Correct Linux 1 recognition in config. 13521 [Ulf Möller <ulf@fitug.de>] 13522 13523 *) Remove pointless MD5 hash when using DSA keys in ca. 13524 [Anonymous <nobody@replay.com>] 13525 13526 *) Generate an error if given an empty string as a cert directory. Also 13527 generate an error if handed NULL (previously returned 0 to indicate an 13528 error, but didn't set one). 13529 [Ben Laurie, reported by Anonymous <nobody@replay.com>] 13530 13531 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last. 13532 [Ben Laurie] 13533 13534 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct 13535 parameters. This was causing a warning which killed off the Win32 compile. 13536 [Steve Henson] 13537 13538 *) Remove C++ style comments from crypto/bn/bn_local.h. 13539 [Neil Costigan <neil.costigan@celocom.com>] 13540 13541 *) The function OBJ_txt2nid was broken. It was supposed to return a nid 13542 based on a text string, looking up short and long names and finally 13543 "dot" format. The "dot" format stuff didn't work. Added new function 13544 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote 13545 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the 13546 OID is not part of the table. 13547 [Steve Henson] 13548 13549 *) Add prototypes to X509 lookup/verify methods, fixing a bug in 13550 X509_LOOKUP_by_alias(). 13551 [Ben Laurie] 13552 13553 *) Sort openssl functions by name. 13554 [Ben Laurie] 13555 13556 *) Get the gendsa program working (hopefully) and add it to app list. Remove 13557 encryption from sample DSA keys (in case anyone is interested the password 13558 was "1234"). 13559 [Steve Henson] 13560 13561 *) Make _all_ *_free functions accept a NULL pointer. 13562 [Frans Heymans <fheymans@isaserver.be>] 13563 13564 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use 13565 NULL pointers. 13566 [Anonymous <nobody@replay.com>] 13567 13568 *) s_server should send the CAfile as acceptable CAs, not its own cert. 13569 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] 13570 13571 *) Don't blow it for numeric -newkey arguments to apps/req. 13572 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] 13573 13574 *) Temp key "for export" tests were wrong in s3_srvr.c. 13575 [Anonymous <nobody@replay.com>] 13576 13577 *) Add prototype for temp key callback functions 13578 SSL_CTX_set_tmp_{rsa,dh}_callback(). 13579 [Ben Laurie] 13580 13581 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and 13582 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey(). 13583 [Steve Henson] 13584 13585 *) X509_name_add_entry() freed the wrong thing after an error. 13586 [Arne Ansper <arne@ats.cyber.ee>] 13587 13588 *) rsa_eay.c would attempt to free a NULL context. 13589 [Arne Ansper <arne@ats.cyber.ee>] 13590 13591 *) BIO_s_socket() had a broken should_retry() on Windoze. 13592 [Arne Ansper <arne@ats.cyber.ee>] 13593 13594 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH. 13595 [Arne Ansper <arne@ats.cyber.ee>] 13596 13597 *) Make sure the already existing X509_STORE->depth variable is initialized 13598 in X509_STORE_new(), but document the fact that this variable is still 13599 unused in the certificate verification process. 13600 [Ralf S. Engelschall] 13601 13602 *) Fix the various library and apps files to free up pkeys obtained from 13603 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions. 13604 [Steve Henson] 13605 13606 *) Fix reference counting in X509_PUBKEY_get(). This makes 13607 demos/maurice/example2.c work, amongst others, probably. 13608 [Steve Henson and Ben Laurie] 13609 13610 *) First cut of a cleanup for apps/. First the `ssleay' program is now named 13611 `openssl' and second, the shortcut symlinks for the `openssl <command>' 13612 are no longer created. This way we have a single and consistent command 13613 line interface `openssl <command>', similar to `cvs <command>'. 13614 [Ralf S. Engelschall, Paul Sutton and Ben Laurie] 13615 13616 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey 13617 BIT STRING wrapper always have zero unused bits. 13618 [Steve Henson] 13619 13620 *) Add CA.pl, perl version of CA.sh, add extended key usage OID. 13621 [Steve Henson] 13622 13623 *) Make the top-level INSTALL documentation easier to understand. 13624 [Paul Sutton] 13625 13626 *) Makefiles updated to exit if an error occurs in a sub-directory 13627 make (including if user presses ^C) [Paul Sutton] 13628 13629 *) Make Montgomery context stuff explicit in RSA data structure. 13630 [Ben Laurie] 13631 13632 *) Fix build order of pem and err to allow for generated pem.h. 13633 [Ben Laurie] 13634 13635 *) Fix renumbering bug in X509_NAME_delete_entry(). 13636 [Ben Laurie] 13637 13638 *) Enhanced the err-ins.pl script so it makes the error library number 13639 global and can add a library name. This is needed for external ASN1 and 13640 other error libraries. 13641 [Steve Henson] 13642 13643 *) Fixed sk_insert which never worked properly. 13644 [Steve Henson] 13645 13646 *) Fix ASN1 macros so they can handle indefinite length constructed 13647 EXPLICIT tags. Some non standard certificates use these: they can now 13648 be read in. 13649 [Steve Henson] 13650 13651 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc) 13652 into a single doc/ssleay.txt bundle. This way the information is still 13653 preserved but no longer messes up this directory. Now it's new room for 13654 the new set of documentation files. 13655 [Ralf S. Engelschall] 13656 13657 *) SETs were incorrectly DER encoded. This was a major pain, because they 13658 shared code with SEQUENCEs, which aren't coded the same. This means that 13659 almost everything to do with SETs or SEQUENCEs has either changed name or 13660 number of arguments. 13661 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>] 13662 13663 *) Fix test data to work with the above. 13664 [Ben Laurie] 13665 13666 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but 13667 was already fixed by Eric for 0.9.1 it seems. 13668 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>] 13669 13670 *) Autodetect FreeBSD3. 13671 [Ben Laurie] 13672 13673 *) Fix various bugs in Configure. This affects the following platforms: 13674 nextstep 13675 ncr-scde 13676 unixware-2.0 13677 unixware-2.0-pentium 13678 sco5-cc. 13679 [Ben Laurie] 13680 13681 *) Eliminate generated files from CVS. Reorder tests to regenerate files 13682 before they are needed. 13683 [Ben Laurie] 13684 13685 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy). 13686 [Ben Laurie] 13687 13688 13689 Changes between 0.9.1b and 0.9.1c [23-Dec-1998] 13690 13691 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and 13692 changed SSLeay to OpenSSL in version strings. 13693 [Ralf S. Engelschall] 13694 13695 *) Some fixups to the top-level documents. 13696 [Paul Sutton] 13697 13698 *) Fixed the nasty bug where rsaref.h was not found under compile-time 13699 because the symlink to include/ was missing. 13700 [Ralf S. Engelschall] 13701 13702 *) Incorporated the popular no-RSA/DSA-only patches 13703 which allow to compile a RSA-free SSLeay. 13704 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall] 13705 13706 *) Fixed nasty rehash problem under `make -f Makefile.ssl links' 13707 when "ssleay" is still not found. 13708 [Ralf S. Engelschall] 13709 13710 *) Added more platforms to Configure: Cray T3E, HPUX 11, 13711 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>] 13712 13713 *) Updated the README file. 13714 [Ralf S. Engelschall] 13715 13716 *) Added various .cvsignore files in the CVS repository subdirs 13717 to make a "cvs update" really silent. 13718 [Ralf S. Engelschall] 13719 13720 *) Recompiled the error-definition header files and added 13721 missing symbols to the Win32 linker tables. 13722 [Ralf S. Engelschall] 13723 13724 *) Cleaned up the top-level documents; 13725 o new files: CHANGES and LICENSE 13726 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay 13727 o merged COPYRIGHT into LICENSE 13728 o removed obsolete TODO file 13729 o renamed MICROSOFT to INSTALL.W32 13730 [Ralf S. Engelschall] 13731 13732 *) Removed dummy files from the 0.9.1b source tree: 13733 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi 13734 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f 13735 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f 13736 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f 13737 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f 13738 [Ralf S. Engelschall] 13739 13740 *) Added various platform portability fixes. 13741 [Mark J. Cox] 13742 13743 *) The Genesis of the OpenSSL rpject: 13744 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A. 13745 Young and Tim J. Hudson created while they were working for C2Net until 13746 summer 1998. 13747 [The OpenSSL Project] 13748 13749 13750 Changes between 0.9.0b and 0.9.1b [not released] 13751 13752 *) Updated a few CA certificates under certs/ 13753 [Eric A. Young] 13754 13755 *) Changed some BIGNUM api stuff. 13756 [Eric A. Young] 13757 13758 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD, 13759 DGUX x86, Linux Alpha, etc. 13760 [Eric A. Young] 13761 13762 *) New COMP library [crypto/comp/] for SSL Record Layer Compression: 13763 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is 13764 available). 13765 [Eric A. Young] 13766 13767 *) Add -strparse option to asn1pars program which parses nested 13768 binary structures 13769 [Dr Stephen Henson <shenson@bigfoot.com>] 13770 13771 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs. 13772 [Eric A. Young] 13773 13774 *) DSA fix for "ca" program. 13775 [Eric A. Young] 13776 13777 *) Added "-genkey" option to "dsaparam" program. 13778 [Eric A. Young] 13779 13780 *) Added RIPE MD160 (rmd160) message digest. 13781 [Eric A. Young] 13782 13783 *) Added -a (all) option to "ssleay version" command. 13784 [Eric A. Young] 13785 13786 *) Added PLATFORM define which is the id given to Configure. 13787 [Eric A. Young] 13788 13789 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking. 13790 [Eric A. Young] 13791 13792 *) Extended the ASN.1 parser routines. 13793 [Eric A. Young] 13794 13795 *) Extended BIO routines to support REUSEADDR, seek, tell, etc. 13796 [Eric A. Young] 13797 13798 *) Added a BN_CTX to the BN library. 13799 [Eric A. Young] 13800 13801 *) Fixed the weak key values in DES library 13802 [Eric A. Young] 13803 13804 *) Changed API in EVP library for cipher aliases. 13805 [Eric A. Young] 13806 13807 *) Added support for RC2/64bit cipher. 13808 [Eric A. Young] 13809 13810 *) Converted the lhash library to the crypto/mem.c functions. 13811 [Eric A. Young] 13812 13813 *) Added more recognized ASN.1 object ids. 13814 [Eric A. Young] 13815 13816 *) Added more RSA padding checks for SSL/TLS. 13817 [Eric A. Young] 13818 13819 *) Added BIO proxy/filter functionality. 13820 [Eric A. Young] 13821 13822 *) Added extra_certs to SSL_CTX which can be used 13823 send extra CA certificates to the client in the CA cert chain sending 13824 process. It can be configured with SSL_CTX_add_extra_chain_cert(). 13825 [Eric A. Young] 13826 13827 *) Now Fortezza is denied in the authentication phase because 13828 this is key exchange mechanism is not supported by SSLeay at all. 13829 [Eric A. Young] 13830 13831 *) Additional PKCS1 checks. 13832 [Eric A. Young] 13833 13834 *) Support the string "TLSv1" for all TLS v1 ciphers. 13835 [Eric A. Young] 13836 13837 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the 13838 ex_data index of the SSL context in the X509_STORE_CTX ex_data. 13839 [Eric A. Young] 13840 13841 *) Fixed a few memory leaks. 13842 [Eric A. Young] 13843 13844 *) Fixed various code and comment typos. 13845 [Eric A. Young] 13846 13847 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0 13848 bytes sent in the client random. 13849 [Edward Bishop <ebishop@spyglass.com>] 13850