1 /* ssl/ssl_ciph.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 */
116 #include <stdio.h>
117 #include <openssl/objects.h>
118 #include <openssl/comp.h>
119 #include "ssl_locl.h"
120
121 #define SSL_ENC_DES_IDX 0
122 #define SSL_ENC_3DES_IDX 1
123 #define SSL_ENC_RC4_IDX 2
124 #define SSL_ENC_RC2_IDX 3
125 #define SSL_ENC_IDEA_IDX 4
126 #define SSL_ENC_eFZA_IDX 5
127 #define SSL_ENC_NULL_IDX 6
128 #define SSL_ENC_AES128_IDX 7
129 #define SSL_ENC_AES256_IDX 8
130 #define SSL_ENC_CAMELLIA128_IDX 9
131 #define SSL_ENC_CAMELLIA256_IDX 10
132 #define SSL_ENC_SEED_IDX 11
133 #define SSL_ENC_NUM_IDX 12
134
135
136 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
137 NULL,NULL,NULL,NULL,NULL,NULL,
138 };
139
140 #define SSL_COMP_NULL_IDX 0
141 #define SSL_COMP_ZLIB_IDX 1
142 #define SSL_COMP_NUM_IDX 2
143
144 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
145
146 #define SSL_MD_MD5_IDX 0
147 #define SSL_MD_SHA1_IDX 1
148 #define SSL_MD_NUM_IDX 2
149 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
150 NULL,NULL,
151 };
152
153 #define CIPHER_ADD 1
154 #define CIPHER_KILL 2
155 #define CIPHER_DEL 3
156 #define CIPHER_ORD 4
157 #define CIPHER_SPECIAL 5
158
159 typedef struct cipher_order_st
160 {
161 SSL_CIPHER *cipher;
162 int active;
163 int dead;
164 struct cipher_order_st *next,*prev;
165 } CIPHER_ORDER;
166
167 static const SSL_CIPHER cipher_aliases[]={
168 /* Don't include eNULL unless specifically enabled. */
169 /* Don't include ECC in ALL because these ciphers are not yet official. */
170 {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL & ~SSL_kECDH & ~SSL_kECDHE, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL}, /* must be first */
171 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */
172 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */
173 {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0},
174 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */
175 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0},
176 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0},
177 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0},
178 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0},
179 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0},
180 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0},
181 {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0},
182 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0},
183 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */
184 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0},
185 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0},
186 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0},
187 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0},
188 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0},
189 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0},
190
191 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0},
192 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0},
193 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0},
194 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0},
195 #ifndef OPENSSL_NO_IDEA
196 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0},
197 #endif
198 {0,SSL_TXT_SEED,0,SSL_SEED, 0,0,0,0,SSL_ENC_MASK,0},
199 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0},
200 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0},
201 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0},
202 {0,SSL_TXT_CAMELLIA,0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0},
203
204 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0},
205 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0},
206 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0},
207
208 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0},
209 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
210 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
211 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
212 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0},
213
214 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0},
215 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0},
216 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0},
217
218 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
219 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
220 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK},
221 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK},
222 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK},
223 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK},
224 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK},
225 };
226
ssl_load_ciphers(void)227 void ssl_load_ciphers(void)
228 {
229 ssl_cipher_methods[SSL_ENC_DES_IDX]=
230 EVP_get_cipherbyname(SN_des_cbc);
231 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
232 EVP_get_cipherbyname(SN_des_ede3_cbc);
233 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
234 EVP_get_cipherbyname(SN_rc4);
235 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
236 EVP_get_cipherbyname(SN_rc2_cbc);
237 #ifndef OPENSSL_NO_IDEA
238 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
239 EVP_get_cipherbyname(SN_idea_cbc);
240 #else
241 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
242 #endif
243 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
244 EVP_get_cipherbyname(SN_aes_128_cbc);
245 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
246 EVP_get_cipherbyname(SN_aes_256_cbc);
247 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
248 EVP_get_cipherbyname(SN_camellia_128_cbc);
249 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
250 EVP_get_cipherbyname(SN_camellia_256_cbc);
251 ssl_cipher_methods[SSL_ENC_SEED_IDX]=
252 EVP_get_cipherbyname(SN_seed_cbc);
253
254 ssl_digest_methods[SSL_MD_MD5_IDX]=
255 EVP_get_digestbyname(SN_md5);
256 ssl_digest_methods[SSL_MD_SHA1_IDX]=
257 EVP_get_digestbyname(SN_sha1);
258 }
259
260
261 #ifndef OPENSSL_NO_COMP
262
sk_comp_cmp(const SSL_COMP * const * a,const SSL_COMP * const * b)263 static int sk_comp_cmp(const SSL_COMP * const *a,
264 const SSL_COMP * const *b)
265 {
266 return((*a)->id-(*b)->id);
267 }
268
load_builtin_compressions(void)269 static void load_builtin_compressions(void)
270 {
271 int got_write_lock = 0;
272
273 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
274 if (ssl_comp_methods == NULL)
275 {
276 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
277 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
278 got_write_lock = 1;
279
280 if (ssl_comp_methods == NULL)
281 {
282 SSL_COMP *comp = NULL;
283
284 MemCheck_off();
285 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
286 if (ssl_comp_methods != NULL)
287 {
288 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
289 if (comp != NULL)
290 {
291 comp->method=COMP_zlib();
292 if (comp->method
293 && comp->method->type == NID_undef)
294 OPENSSL_free(comp);
295 else
296 {
297 comp->id=SSL_COMP_ZLIB_IDX;
298 comp->name=comp->method->name;
299 sk_SSL_COMP_push(ssl_comp_methods,comp);
300 }
301 }
302 }
303 MemCheck_on();
304 }
305 }
306
307 if (got_write_lock)
308 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
309 else
310 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
311 }
312 #endif
313
ssl_cipher_get_evp(const SSL_SESSION * s,const EVP_CIPHER ** enc,const EVP_MD ** md,SSL_COMP ** comp)314 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
315 const EVP_MD **md, SSL_COMP **comp)
316 {
317 int i;
318 SSL_CIPHER *c;
319
320 c=s->cipher;
321 if (c == NULL) return(0);
322 if (comp != NULL)
323 {
324 SSL_COMP ctmp;
325 #ifndef OPENSSL_NO_COMP
326 load_builtin_compressions();
327 #endif
328
329 *comp=NULL;
330 ctmp.id=s->compress_meth;
331 if (ssl_comp_methods != NULL)
332 {
333 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
334 if (i >= 0)
335 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
336 else
337 *comp=NULL;
338 }
339 }
340
341 if ((enc == NULL) || (md == NULL)) return(0);
342
343 switch (c->algorithms & SSL_ENC_MASK)
344 {
345 case SSL_DES:
346 i=SSL_ENC_DES_IDX;
347 break;
348 case SSL_3DES:
349 i=SSL_ENC_3DES_IDX;
350 break;
351 case SSL_RC4:
352 i=SSL_ENC_RC4_IDX;
353 break;
354 case SSL_RC2:
355 i=SSL_ENC_RC2_IDX;
356 break;
357 case SSL_IDEA:
358 i=SSL_ENC_IDEA_IDX;
359 break;
360 case SSL_eNULL:
361 i=SSL_ENC_NULL_IDX;
362 break;
363 case SSL_AES:
364 switch(c->alg_bits)
365 {
366 case 128: i=SSL_ENC_AES128_IDX; break;
367 case 256: i=SSL_ENC_AES256_IDX; break;
368 default: i=-1; break;
369 }
370 break;
371 case SSL_CAMELLIA:
372 switch(c->alg_bits)
373 {
374 case 128: i=SSL_ENC_CAMELLIA128_IDX; break;
375 case 256: i=SSL_ENC_CAMELLIA256_IDX; break;
376 default: i=-1; break;
377 }
378 break;
379 case SSL_SEED:
380 i=SSL_ENC_SEED_IDX;
381 break;
382
383 default:
384 i= -1;
385 break;
386 }
387
388 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
389 *enc=NULL;
390 else
391 {
392 if (i == SSL_ENC_NULL_IDX)
393 *enc=EVP_enc_null();
394 else
395 *enc=ssl_cipher_methods[i];
396 }
397
398 switch (c->algorithms & SSL_MAC_MASK)
399 {
400 case SSL_MD5:
401 i=SSL_MD_MD5_IDX;
402 break;
403 case SSL_SHA1:
404 i=SSL_MD_SHA1_IDX;
405 break;
406 default:
407 i= -1;
408 break;
409 }
410 if ((i < 0) || (i > SSL_MD_NUM_IDX))
411 *md=NULL;
412 else
413 *md=ssl_digest_methods[i];
414
415 if ((*enc != NULL) && (*md != NULL))
416 return(1);
417 else
418 return(0);
419 }
420
421 #define ITEM_SEP(a) \
422 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
423
ll_append_tail(CIPHER_ORDER ** head,CIPHER_ORDER * curr,CIPHER_ORDER ** tail)424 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
425 CIPHER_ORDER **tail)
426 {
427 if (curr == *tail) return;
428 if (curr == *head)
429 *head=curr->next;
430 if (curr->prev != NULL)
431 curr->prev->next=curr->next;
432 if (curr->next != NULL) /* should always be true */
433 curr->next->prev=curr->prev;
434 (*tail)->next=curr;
435 curr->prev= *tail;
436 curr->next=NULL;
437 *tail=curr;
438 }
439
440 struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9,
441 * where 128-bit and 256-bit algorithms simply will get
442 * separate bits. */
443 unsigned long mask; /* everything except m256 */
444 unsigned long m256; /* applies to 256-bit algorithms only */
445 };
446
ssl_cipher_get_disabled(void)447 static struct disabled_masks ssl_cipher_get_disabled(void)
448 {
449 unsigned long mask;
450 unsigned long m256;
451 struct disabled_masks ret;
452
453 mask = SSL_kFZA;
454 #ifdef OPENSSL_NO_RSA
455 mask |= SSL_aRSA|SSL_kRSA;
456 #endif
457 #ifdef OPENSSL_NO_DSA
458 mask |= SSL_aDSS;
459 #endif
460 #ifdef OPENSSL_NO_DH
461 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH;
462 #endif
463 #ifdef OPENSSL_NO_KRB5
464 mask |= SSL_kKRB5|SSL_aKRB5;
465 #endif
466 #ifdef OPENSSL_NO_ECDH
467 mask |= SSL_kECDH|SSL_kECDHE;
468 #endif
469 #ifdef SSL_FORBID_ENULL
470 mask |= SSL_eNULL;
471 #endif
472
473 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
474 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
475 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
476 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
477 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
478 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0;
479 mask |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0;
480
481 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
482 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
483
484 /* finally consider algorithms where mask and m256 differ */
485 m256 = mask;
486 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0;
487 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0;
488 m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0;
489 m256 |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA:0;
490
491 ret.mask = mask;
492 ret.m256 = m256;
493 return ret;
494 }
495
ssl_cipher_collect_ciphers(const SSL_METHOD * ssl_method,int num_of_ciphers,unsigned long mask,unsigned long m256,CIPHER_ORDER * co_list,CIPHER_ORDER ** head_p,CIPHER_ORDER ** tail_p)496 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
497 int num_of_ciphers, unsigned long mask, unsigned long m256,
498 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p,
499 CIPHER_ORDER **tail_p)
500 {
501 int i, co_list_num;
502 SSL_CIPHER *c;
503
504 /*
505 * We have num_of_ciphers descriptions compiled in, depending on the
506 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
507 * These will later be sorted in a linked list with at most num
508 * entries.
509 */
510
511 /* Get the initial list of ciphers */
512 co_list_num = 0; /* actual count of ciphers */
513 for (i = 0; i < num_of_ciphers; i++)
514 {
515 c = ssl_method->get_cipher(i);
516 #define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask))
517 /* drop those that use any of that is not available */
518 if ((c != NULL) && c->valid && !IS_MASKED(c))
519 {
520 co_list[co_list_num].cipher = c;
521 co_list[co_list_num].next = NULL;
522 co_list[co_list_num].prev = NULL;
523 co_list[co_list_num].active = 0;
524 co_list_num++;
525 #ifdef KSSL_DEBUG
526 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms);
527 #endif /* KSSL_DEBUG */
528 /*
529 if (!sk_push(ca_list,(char *)c)) goto err;
530 */
531 }
532 }
533
534 /*
535 * Prepare linked list from list entries
536 */
537 for (i = 1; i < co_list_num - 1; i++)
538 {
539 co_list[i].prev = &(co_list[i-1]);
540 co_list[i].next = &(co_list[i+1]);
541 }
542 if (co_list_num > 0)
543 {
544 (*head_p) = &(co_list[0]);
545 (*head_p)->prev = NULL;
546 (*head_p)->next = &(co_list[1]);
547 (*tail_p) = &(co_list[co_list_num - 1]);
548 (*tail_p)->prev = &(co_list[co_list_num - 2]);
549 (*tail_p)->next = NULL;
550 }
551 }
552
ssl_cipher_collect_aliases(SSL_CIPHER ** ca_list,int num_of_group_aliases,unsigned long mask,CIPHER_ORDER * head)553 static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list,
554 int num_of_group_aliases, unsigned long mask,
555 CIPHER_ORDER *head)
556 {
557 CIPHER_ORDER *ciph_curr;
558 SSL_CIPHER **ca_curr;
559 int i;
560
561 /*
562 * First, add the real ciphers as already collected
563 */
564 ciph_curr = head;
565 ca_curr = ca_list;
566 while (ciph_curr != NULL)
567 {
568 *ca_curr = ciph_curr->cipher;
569 ca_curr++;
570 ciph_curr = ciph_curr->next;
571 }
572
573 /*
574 * Now we add the available ones from the cipher_aliases[] table.
575 * They represent either an algorithm, that must be fully
576 * supported (not match any bit in mask) or represent a cipher
577 * strength value (will be added in any case because algorithms=0).
578 */
579 for (i = 0; i < num_of_group_aliases; i++)
580 {
581 if ((i == 0) || /* always fetch "ALL" */
582 !(cipher_aliases[i].algorithms & mask))
583 {
584 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
585 ca_curr++;
586 }
587 }
588
589 *ca_curr = NULL; /* end of list */
590 }
591
ssl_cipher_apply_rule(unsigned long cipher_id,unsigned long ssl_version,unsigned long algorithms,unsigned long mask,unsigned long algo_strength,unsigned long mask_strength,int rule,int strength_bits,CIPHER_ORDER * co_list,CIPHER_ORDER ** head_p,CIPHER_ORDER ** tail_p)592 static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version,
593 unsigned long algorithms, unsigned long mask,
594 unsigned long algo_strength, unsigned long mask_strength,
595 int rule, int strength_bits, CIPHER_ORDER *co_list,
596 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
597 {
598 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2;
599 SSL_CIPHER *cp;
600 unsigned long ma, ma_s;
601
602 #ifdef CIPHER_DEBUG
603 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
604 rule, algorithms, mask, algo_strength, mask_strength,
605 strength_bits);
606 #endif
607
608 curr = head = *head_p;
609 curr2 = head;
610 tail2 = tail = *tail_p;
611 for (;;)
612 {
613 if ((curr == NULL) || (curr == tail2)) break;
614 curr = curr2;
615 curr2 = curr->next;
616
617 cp = curr->cipher;
618
619 /* If explicit cipher suite, match only that one for its own protocol version.
620 * Usual selection criteria will be used for similar ciphersuites from other version! */
621
622 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version)
623 {
624 if (cp->id != cipher_id)
625 continue;
626 }
627
628 /*
629 * Selection criteria is either the number of strength_bits
630 * or the algorithm used.
631 */
632 else if (strength_bits == -1)
633 {
634 ma = mask & cp->algorithms;
635 ma_s = mask_strength & cp->algo_strength;
636
637 #ifdef CIPHER_DEBUG
638 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength);
639 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength);
640 #endif
641 /*
642 * Select: if none of the mask bit was met from the
643 * cipher or not all of the bits were met, the
644 * selection does not apply.
645 */
646 if (((ma == 0) && (ma_s == 0)) ||
647 ((ma & algorithms) != ma) ||
648 ((ma_s & algo_strength) != ma_s))
649 continue; /* does not apply */
650 }
651 else if (strength_bits != cp->strength_bits)
652 continue; /* does not apply */
653
654 #ifdef CIPHER_DEBUG
655 printf("Action = %d\n", rule);
656 #endif
657
658 /* add the cipher if it has not been added yet. */
659 if (rule == CIPHER_ADD)
660 {
661 if (!curr->active)
662 {
663 int add_this_cipher = 1;
664
665 if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0))
666 {
667 /* Make sure "ECCdraft" ciphersuites are activated only if
668 * *explicitly* requested, but not implicitly (such as
669 * as part of the "AES" alias). */
670
671 add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0;
672 }
673
674 if (add_this_cipher)
675 {
676 ll_append_tail(&head, curr, &tail);
677 curr->active = 1;
678 }
679 }
680 }
681 /* Move the added cipher to this location */
682 else if (rule == CIPHER_ORD)
683 {
684 if (curr->active)
685 {
686 ll_append_tail(&head, curr, &tail);
687 }
688 }
689 else if (rule == CIPHER_DEL)
690 curr->active = 0;
691 else if (rule == CIPHER_KILL)
692 {
693 if (head == curr)
694 head = curr->next;
695 else
696 curr->prev->next = curr->next;
697 if (tail == curr)
698 tail = curr->prev;
699 curr->active = 0;
700 if (curr->next != NULL)
701 curr->next->prev = curr->prev;
702 if (curr->prev != NULL)
703 curr->prev->next = curr->next;
704 curr->next = NULL;
705 curr->prev = NULL;
706 }
707 }
708
709 *head_p = head;
710 *tail_p = tail;
711 }
712
ssl_cipher_strength_sort(CIPHER_ORDER * co_list,CIPHER_ORDER ** head_p,CIPHER_ORDER ** tail_p)713 static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list,
714 CIPHER_ORDER **head_p,
715 CIPHER_ORDER **tail_p)
716 {
717 int max_strength_bits, i, *number_uses;
718 CIPHER_ORDER *curr;
719
720 /*
721 * This routine sorts the ciphers with descending strength. The sorting
722 * must keep the pre-sorted sequence, so we apply the normal sorting
723 * routine as '+' movement to the end of the list.
724 */
725 max_strength_bits = 0;
726 curr = *head_p;
727 while (curr != NULL)
728 {
729 if (curr->active &&
730 (curr->cipher->strength_bits > max_strength_bits))
731 max_strength_bits = curr->cipher->strength_bits;
732 curr = curr->next;
733 }
734
735 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
736 if (!number_uses)
737 {
738 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
739 return(0);
740 }
741 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
742
743 /*
744 * Now find the strength_bits values actually used
745 */
746 curr = *head_p;
747 while (curr != NULL)
748 {
749 if (curr->active)
750 number_uses[curr->cipher->strength_bits]++;
751 curr = curr->next;
752 }
753 /*
754 * Go through the list of used strength_bits values in descending
755 * order.
756 */
757 for (i = max_strength_bits; i >= 0; i--)
758 if (number_uses[i] > 0)
759 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i,
760 co_list, head_p, tail_p);
761
762 OPENSSL_free(number_uses);
763 return(1);
764 }
765
ssl_cipher_process_rulestr(const char * rule_str,CIPHER_ORDER * co_list,CIPHER_ORDER ** head_p,CIPHER_ORDER ** tail_p,SSL_CIPHER ** ca_list)766 static int ssl_cipher_process_rulestr(const char *rule_str,
767 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p,
768 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list)
769 {
770 unsigned long algorithms, mask, algo_strength, mask_strength;
771 const char *l, *start, *buf;
772 int j, multi, found, rule, retval, ok, buflen;
773 unsigned long cipher_id = 0, ssl_version = 0;
774 char ch;
775
776 retval = 1;
777 l = rule_str;
778 for (;;)
779 {
780 ch = *l;
781
782 if (ch == '\0')
783 break; /* done */
784 if (ch == '-')
785 { rule = CIPHER_DEL; l++; }
786 else if (ch == '+')
787 { rule = CIPHER_ORD; l++; }
788 else if (ch == '!')
789 { rule = CIPHER_KILL; l++; }
790 else if (ch == '@')
791 { rule = CIPHER_SPECIAL; l++; }
792 else
793 { rule = CIPHER_ADD; }
794
795 if (ITEM_SEP(ch))
796 {
797 l++;
798 continue;
799 }
800
801 algorithms = mask = algo_strength = mask_strength = 0;
802
803 start=l;
804 for (;;)
805 {
806 ch = *l;
807 buf = l;
808 buflen = 0;
809 #ifndef CHARSET_EBCDIC
810 while ( ((ch >= 'A') && (ch <= 'Z')) ||
811 ((ch >= '0') && (ch <= '9')) ||
812 ((ch >= 'a') && (ch <= 'z')) ||
813 (ch == '-'))
814 #else
815 while ( isalnum(ch) || (ch == '-'))
816 #endif
817 {
818 ch = *(++l);
819 buflen++;
820 }
821
822 if (buflen == 0)
823 {
824 /*
825 * We hit something we cannot deal with,
826 * it is no command or separator nor
827 * alphanumeric, so we call this an error.
828 */
829 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
830 SSL_R_INVALID_COMMAND);
831 retval = found = 0;
832 l++;
833 break;
834 }
835
836 if (rule == CIPHER_SPECIAL)
837 {
838 found = 0; /* unused -- avoid compiler warning */
839 break; /* special treatment */
840 }
841
842 /* check for multi-part specification */
843 if (ch == '+')
844 {
845 multi=1;
846 l++;
847 }
848 else
849 multi=0;
850
851 /*
852 * Now search for the cipher alias in the ca_list. Be careful
853 * with the strncmp, because the "buflen" limitation
854 * will make the rule "ADH:SOME" and the cipher
855 * "ADH-MY-CIPHER" look like a match for buflen=3.
856 * So additionally check whether the cipher name found
857 * has the correct length. We can save a strlen() call:
858 * just checking for the '\0' at the right place is
859 * sufficient, we have to strncmp() anyway. (We cannot
860 * use strcmp(), because buf is not '\0' terminated.)
861 */
862 j = found = 0;
863 cipher_id = 0;
864 ssl_version = 0;
865 while (ca_list[j])
866 {
867 if (!strncmp(buf, ca_list[j]->name, buflen) &&
868 (ca_list[j]->name[buflen] == '\0'))
869 {
870 found = 1;
871 break;
872 }
873 else
874 j++;
875 }
876 if (!found)
877 break; /* ignore this entry */
878
879 /* New algorithms:
880 * 1 - any old restrictions apply outside new mask
881 * 2 - any new restrictions apply outside old mask
882 * 3 - enforce old & new where masks intersect
883 */
884 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */
885 (ca_list[j]->algorithms & ~mask) | /* 2 */
886 (algorithms & ca_list[j]->algorithms); /* 3 */
887 mask |= ca_list[j]->mask;
888 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) |
889 (ca_list[j]->algo_strength & ~mask_strength) |
890 (algo_strength & ca_list[j]->algo_strength);
891 mask_strength |= ca_list[j]->mask_strength;
892
893 /* explicit ciphersuite found */
894 if (ca_list[j]->valid)
895 {
896 cipher_id = ca_list[j]->id;
897 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK;
898 break;
899 }
900
901 if (!multi) break;
902 }
903
904 /*
905 * Ok, we have the rule, now apply it
906 */
907 if (rule == CIPHER_SPECIAL)
908 { /* special command */
909 ok = 0;
910 if ((buflen == 8) &&
911 !strncmp(buf, "STRENGTH", 8))
912 ok = ssl_cipher_strength_sort(co_list,
913 head_p, tail_p);
914 else
915 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
916 SSL_R_INVALID_COMMAND);
917 if (ok == 0)
918 retval = 0;
919 /*
920 * We do not support any "multi" options
921 * together with "@", so throw away the
922 * rest of the command, if any left, until
923 * end or ':' is found.
924 */
925 while ((*l != '\0') && !ITEM_SEP(*l))
926 l++;
927 }
928 else if (found)
929 {
930 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask,
931 algo_strength, mask_strength, rule, -1,
932 co_list, head_p, tail_p);
933 }
934 else
935 {
936 while ((*l != '\0') && !ITEM_SEP(*l))
937 l++;
938 }
939 if (*l == '\0') break; /* done */
940 }
941
942 return(retval);
943 }
944
STACK_OF(SSL_CIPHER)945 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
946 STACK_OF(SSL_CIPHER) **cipher_list,
947 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
948 const char *rule_str)
949 {
950 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
951 unsigned long disabled_mask;
952 unsigned long disabled_m256;
953 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
954 const char *rule_p;
955 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
956 SSL_CIPHER **ca_list = NULL;
957
958 /*
959 * Return with error if nothing to do.
960 */
961 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
962 return NULL;
963
964 /*
965 * To reduce the work to do we only want to process the compiled
966 * in algorithms, so we first get the mask of disabled ciphers.
967 */
968 {
969 struct disabled_masks d;
970 d = ssl_cipher_get_disabled();
971 disabled_mask = d.mask;
972 disabled_m256 = d.m256;
973 }
974
975 /*
976 * Now we have to collect the available ciphers from the compiled
977 * in ciphers. We cannot get more than the number compiled in, so
978 * it is used for allocation.
979 */
980 num_of_ciphers = ssl_method->num_ciphers();
981 #ifdef KSSL_DEBUG
982 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
983 #endif /* KSSL_DEBUG */
984 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
985 if (co_list == NULL)
986 {
987 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
988 return(NULL); /* Failure */
989 }
990
991 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask,
992 disabled_m256, co_list, &head, &tail);
993
994 /*
995 * We also need cipher aliases for selecting based on the rule_str.
996 * There might be two types of entries in the rule_str: 1) names
997 * of ciphers themselves 2) aliases for groups of ciphers.
998 * For 1) we need the available ciphers and for 2) the cipher
999 * groups of cipher_aliases added together in one list (otherwise
1000 * we would be happy with just the cipher_aliases table).
1001 */
1002 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1003 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1004 ca_list =
1005 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1006 if (ca_list == NULL)
1007 {
1008 OPENSSL_free(co_list);
1009 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1010 return(NULL); /* Failure */
1011 }
1012 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1013 (disabled_mask & disabled_m256), head);
1014
1015 /*
1016 * If the rule_string begins with DEFAULT, apply the default rule
1017 * before using the (possibly available) additional rules.
1018 */
1019 ok = 1;
1020 rule_p = rule_str;
1021 if (strncmp(rule_str,"DEFAULT",7) == 0)
1022 {
1023 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1024 co_list, &head, &tail, ca_list);
1025 rule_p += 7;
1026 if (*rule_p == ':')
1027 rule_p++;
1028 }
1029
1030 if (ok && (strlen(rule_p) > 0))
1031 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail,
1032 ca_list);
1033
1034 OPENSSL_free(ca_list); /* Not needed anymore */
1035
1036 if (!ok)
1037 { /* Rule processing failure */
1038 OPENSSL_free(co_list);
1039 return(NULL);
1040 }
1041 /*
1042 * Allocate new "cipherstack" for the result, return with error
1043 * if we cannot get one.
1044 */
1045 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1046 {
1047 OPENSSL_free(co_list);
1048 return(NULL);
1049 }
1050
1051 /*
1052 * The cipher selection for the list is done. The ciphers are added
1053 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1054 */
1055 for (curr = head; curr != NULL; curr = curr->next)
1056 {
1057 if (curr->active)
1058 {
1059 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1060 #ifdef CIPHER_DEBUG
1061 printf("<%s>\n",curr->cipher->name);
1062 #endif
1063 }
1064 }
1065 OPENSSL_free(co_list); /* Not needed any longer */
1066
1067 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1068 if (tmp_cipher_list == NULL)
1069 {
1070 sk_SSL_CIPHER_free(cipherstack);
1071 return NULL;
1072 }
1073 if (*cipher_list != NULL)
1074 sk_SSL_CIPHER_free(*cipher_list);
1075 *cipher_list = cipherstack;
1076 if (*cipher_list_by_id != NULL)
1077 sk_SSL_CIPHER_free(*cipher_list_by_id);
1078 *cipher_list_by_id = tmp_cipher_list;
1079 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1080
1081 return(cipherstack);
1082 }
1083
SSL_CIPHER_description(SSL_CIPHER * cipher,char * buf,int len)1084 char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
1085 {
1086 int is_export,pkl,kl;
1087 const char *ver,*exp_str;
1088 const char *kx,*au,*enc,*mac;
1089 unsigned long alg,alg2,alg_s;
1090 #ifdef KSSL_DEBUG
1091 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
1092 #else
1093 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1094 #endif /* KSSL_DEBUG */
1095
1096 alg=cipher->algorithms;
1097 alg_s=cipher->algo_strength;
1098 alg2=cipher->algorithm2;
1099
1100 is_export=SSL_C_IS_EXPORT(cipher);
1101 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1102 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1103 exp_str=is_export?" export":"";
1104
1105 if (alg & SSL_SSLV2)
1106 ver="SSLv2";
1107 else if (alg & SSL_SSLV3)
1108 ver="SSLv3";
1109 else
1110 ver="unknown";
1111
1112 switch (alg&SSL_MKEY_MASK)
1113 {
1114 case SSL_kRSA:
1115 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1116 break;
1117 case SSL_kDHr:
1118 kx="DH/RSA";
1119 break;
1120 case SSL_kDHd:
1121 kx="DH/DSS";
1122 break;
1123 case SSL_kKRB5: /* VRS */
1124 case SSL_KRB5: /* VRS */
1125 kx="KRB5";
1126 break;
1127 case SSL_kFZA:
1128 kx="Fortezza";
1129 break;
1130 case SSL_kEDH:
1131 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1132 break;
1133 case SSL_kECDH:
1134 case SSL_kECDHE:
1135 kx=is_export?"ECDH(<=163)":"ECDH";
1136 break;
1137 default:
1138 kx="unknown";
1139 }
1140
1141 switch (alg&SSL_AUTH_MASK)
1142 {
1143 case SSL_aRSA:
1144 au="RSA";
1145 break;
1146 case SSL_aDSS:
1147 au="DSS";
1148 break;
1149 case SSL_aDH:
1150 au="DH";
1151 break;
1152 case SSL_aKRB5: /* VRS */
1153 case SSL_KRB5: /* VRS */
1154 au="KRB5";
1155 break;
1156 case SSL_aFZA:
1157 case SSL_aNULL:
1158 au="None";
1159 break;
1160 case SSL_aECDSA:
1161 au="ECDSA";
1162 break;
1163 default:
1164 au="unknown";
1165 break;
1166 }
1167
1168 switch (alg&SSL_ENC_MASK)
1169 {
1170 case SSL_DES:
1171 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1172 break;
1173 case SSL_3DES:
1174 enc="3DES(168)";
1175 break;
1176 case SSL_RC4:
1177 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1178 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1179 break;
1180 case SSL_RC2:
1181 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1182 break;
1183 case SSL_IDEA:
1184 enc="IDEA(128)";
1185 break;
1186 case SSL_eFZA:
1187 enc="Fortezza";
1188 break;
1189 case SSL_eNULL:
1190 enc="None";
1191 break;
1192 case SSL_AES:
1193 switch(cipher->strength_bits)
1194 {
1195 case 128: enc="AES(128)"; break;
1196 case 192: enc="AES(192)"; break;
1197 case 256: enc="AES(256)"; break;
1198 default: enc="AES(?""?""?)"; break;
1199 }
1200 break;
1201 case SSL_CAMELLIA:
1202 switch(cipher->strength_bits)
1203 {
1204 case 128: enc="Camellia(128)"; break;
1205 case 256: enc="Camellia(256)"; break;
1206 default: enc="Camellia(?""?""?)"; break;
1207 }
1208 break;
1209 case SSL_SEED:
1210 enc="SEED(128)";
1211 break;
1212
1213 default:
1214 enc="unknown";
1215 break;
1216 }
1217
1218 switch (alg&SSL_MAC_MASK)
1219 {
1220 case SSL_MD5:
1221 mac="MD5";
1222 break;
1223 case SSL_SHA1:
1224 mac="SHA1";
1225 break;
1226 default:
1227 mac="unknown";
1228 break;
1229 }
1230
1231 if (buf == NULL)
1232 {
1233 len=128;
1234 buf=OPENSSL_malloc(len);
1235 if (buf == NULL) return("OPENSSL_malloc Error");
1236 }
1237 else if (len < 128)
1238 return("Buffer too small");
1239
1240 #ifdef KSSL_DEBUG
1241 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg);
1242 #else
1243 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1244 #endif /* KSSL_DEBUG */
1245 return(buf);
1246 }
1247
SSL_CIPHER_get_version(const SSL_CIPHER * c)1248 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1249 {
1250 int i;
1251
1252 if (c == NULL) return("(NONE)");
1253 i=(int)(c->id>>24L);
1254 if (i == 3)
1255 return("TLSv1/SSLv3");
1256 else if (i == 2)
1257 return("SSLv2");
1258 else
1259 return("unknown");
1260 }
1261
1262 /* return the actual cipher being used */
SSL_CIPHER_get_name(const SSL_CIPHER * c)1263 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1264 {
1265 if (c != NULL)
1266 return(c->name);
1267 return("(NONE)");
1268 }
1269
1270 /* number of bits for symmetric cipher */
SSL_CIPHER_get_bits(const SSL_CIPHER * c,int * alg_bits)1271 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1272 {
1273 int ret=0;
1274
1275 if (c != NULL)
1276 {
1277 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1278 ret = c->strength_bits;
1279 }
1280 return(ret);
1281 }
1282
ssl3_comp_find(STACK_OF (SSL_COMP)* sk,int n)1283 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1284 {
1285 SSL_COMP *ctmp;
1286 int i,nn;
1287
1288 if ((n == 0) || (sk == NULL)) return(NULL);
1289 nn=sk_SSL_COMP_num(sk);
1290 for (i=0; i<nn; i++)
1291 {
1292 ctmp=sk_SSL_COMP_value(sk,i);
1293 if (ctmp->id == n)
1294 return(ctmp);
1295 }
1296 return(NULL);
1297 }
1298
1299 #ifdef OPENSSL_NO_COMP
SSL_COMP_get_compression_methods(void)1300 void *SSL_COMP_get_compression_methods(void)
1301 {
1302 return NULL;
1303 }
SSL_COMP_add_compression_method(int id,void * cm)1304 int SSL_COMP_add_compression_method(int id, void *cm)
1305 {
1306 return 1;
1307 }
1308
SSL_COMP_get_name(const void * comp)1309 const char *SSL_COMP_get_name(const void *comp)
1310 {
1311 return NULL;
1312 }
1313 #else
STACK_OF(SSL_COMP)1314 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1315 {
1316 load_builtin_compressions();
1317 return(ssl_comp_methods);
1318 }
1319
SSL_COMP_add_compression_method(int id,COMP_METHOD * cm)1320 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1321 {
1322 SSL_COMP *comp;
1323
1324 if (cm == NULL || cm->type == NID_undef)
1325 return 1;
1326
1327 /* According to draft-ietf-tls-compression-04.txt, the
1328 compression number ranges should be the following:
1329
1330 0 to 63: methods defined by the IETF
1331 64 to 192: external party methods assigned by IANA
1332 193 to 255: reserved for private use */
1333 if (id < 193 || id > 255)
1334 {
1335 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1336 return 0;
1337 }
1338
1339 MemCheck_off();
1340 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1341 comp->id=id;
1342 comp->method=cm;
1343 load_builtin_compressions();
1344 if (ssl_comp_methods
1345 && !sk_SSL_COMP_find(ssl_comp_methods,comp))
1346 {
1347 OPENSSL_free(comp);
1348 MemCheck_on();
1349 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1350 return(1);
1351 }
1352 else if ((ssl_comp_methods == NULL)
1353 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1354 {
1355 OPENSSL_free(comp);
1356 MemCheck_on();
1357 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1358 return(1);
1359 }
1360 else
1361 {
1362 MemCheck_on();
1363 return(0);
1364 }
1365 }
1366
SSL_COMP_get_name(const COMP_METHOD * comp)1367 const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1368 {
1369 if (comp)
1370 return comp->name;
1371 return NULL;
1372 }
1373
1374 #endif
1375