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1 /**
2  * \file mbedtls_config.h
3  *
4  * \brief Configuration options (set of defines)
5  *
6  *  This set of compile-time options may be used to enable
7  *  or disable features selectively, and reduce the global
8  *  memory footprint.
9  */
10 /*
11  *  Copyright The Mbed TLS Contributors
12  *  SPDX-License-Identifier: Apache-2.0
13  *
14  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
15  *  not use this file except in compliance with the License.
16  *  You may obtain a copy of the License at
17  *
18  *  http://www.apache.org/licenses/LICENSE-2.0
19  *
20  *  Unless required by applicable law or agreed to in writing, software
21  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
22  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
23  *  See the License for the specific language governing permissions and
24  *  limitations under the License.
25  */
26 
27 /**
28  * This is an optional version symbol that enables comatibility handling of
29  * config files.
30  *
31  * It is equal to the #MBEDTLS_VERSION_NUMBER of the Mbed TLS version that
32  * introduced the config format we want to be compatible with.
33  */
34 //#define MBEDTLS_CONFIG_VERSION 0x03000000
35 
36 /**
37  * \name SECTION: System support
38  *
39  * This section sets system specific settings.
40  * \{
41  */
42 
43  #include <stdlib.h>
44  #include <stdio.h>
45 
46  #define MBEDTLS_ECP_RESTARTABLE 1
47 /**
48  * \def MBEDTLS_HAVE_ASM
49  *
50  * The compiler has support for asm().
51  *
52  * Requires support for asm() in compiler.
53  *
54  * Used in:
55  *      library/aria.c
56  *      library/bn_mul.h
57  *
58  * Required by:
59  *      MBEDTLS_AESNI_C
60  *      MBEDTLS_PADLOCK_C
61  *
62  * Comment to disable the use of assembly code.
63  */
64 #define MBEDTLS_HAVE_ASM
65 
66 /**
67  * \def MBEDTLS_NO_UDBL_DIVISION
68  *
69  * The platform lacks support for double-width integer division (64-bit
70  * division on a 32-bit platform, 128-bit division on a 64-bit platform).
71  *
72  * Used in:
73  *      include/mbedtls/bignum.h
74  *      library/bignum.c
75  *
76  * The bignum code uses double-width division to speed up some operations.
77  * Double-width division is often implemented in software that needs to
78  * be linked with the program. The presence of a double-width integer
79  * type is usually detected automatically through preprocessor macros,
80  * but the automatic detection cannot know whether the code needs to
81  * and can be linked with an implementation of division for that type.
82  * By default division is assumed to be usable if the type is present.
83  * Uncomment this option to prevent the use of double-width division.
84  *
85  * Note that division for the native integer type is always required.
86  * Furthermore, a 64-bit type is always required even on a 32-bit
87  * platform, but it need not support multiplication or division. In some
88  * cases it is also desirable to disable some double-width operations. For
89  * example, if double-width division is implemented in software, disabling
90  * it can reduce code size in some embedded targets.
91  */
92 //#define MBEDTLS_NO_UDBL_DIVISION
93 
94 /**
95  * \def MBEDTLS_NO_64BIT_MULTIPLICATION
96  *
97  * The platform lacks support for 32x32 -> 64-bit multiplication.
98  *
99  * Used in:
100  *      library/poly1305.c
101  *
102  * Some parts of the library may use multiplication of two unsigned 32-bit
103  * operands with a 64-bit result in order to speed up computations. On some
104  * platforms, this is not available in hardware and has to be implemented in
105  * software, usually in a library provided by the toolchain.
106  *
107  * Sometimes it is not desirable to have to link to that library. This option
108  * removes the dependency of that library on platforms that lack a hardware
109  * 64-bit multiplier by embedding a software implementation in Mbed TLS.
110  *
111  * Note that depending on the compiler, this may decrease performance compared
112  * to using the library function provided by the toolchain.
113  */
114 //#define MBEDTLS_NO_64BIT_MULTIPLICATION
115 
116 /**
117  * \def MBEDTLS_HAVE_SSE2
118  *
119  * CPU supports SSE2 instruction set.
120  *
121  * Uncomment if the CPU supports SSE2 (IA-32 specific).
122  */
123 //#define MBEDTLS_HAVE_SSE2
124 
125 /**
126  * \def MBEDTLS_HAVE_TIME
127  *
128  * System has time.h and time().
129  * The time does not need to be correct, only time differences are used,
130  * by contrast with MBEDTLS_HAVE_TIME_DATE
131  *
132  * Defining MBEDTLS_HAVE_TIME allows you to specify MBEDTLS_PLATFORM_TIME_ALT,
133  * MBEDTLS_PLATFORM_TIME_MACRO, MBEDTLS_PLATFORM_TIME_TYPE_MACRO and
134  * MBEDTLS_PLATFORM_STD_TIME.
135  *
136  * Comment if your system does not support time functions
137  */
138 #define MBEDTLS_HAVE_TIME
139 
140 /**
141  * \def MBEDTLS_HAVE_TIME_DATE
142  *
143  * System has time.h, time(), and an implementation for
144  * mbedtls_platform_gmtime_r() (see below).
145  * The time needs to be correct (not necessarily very accurate, but at least
146  * the date should be correct). This is used to verify the validity period of
147  * X.509 certificates.
148  *
149  * Comment if your system does not have a correct clock.
150  *
151  * \note mbedtls_platform_gmtime_r() is an abstraction in platform_util.h that
152  * behaves similarly to the gmtime_r() function from the C standard. Refer to
153  * the documentation for mbedtls_platform_gmtime_r() for more information.
154  *
155  * \note It is possible to configure an implementation for
156  * mbedtls_platform_gmtime_r() at compile-time by using the macro
157  * MBEDTLS_PLATFORM_GMTIME_R_ALT.
158  */
159 // #define MBEDTLS_HAVE_TIME_DATE
160 
161 /**
162  * \def MBEDTLS_PLATFORM_MEMORY
163  *
164  * Enable the memory allocation layer.
165  *
166  * By default mbed TLS uses the system-provided calloc() and free().
167  * This allows different allocators (self-implemented or provided) to be
168  * provided to the platform abstraction layer.
169  *
170  * Enabling MBEDTLS_PLATFORM_MEMORY without the
171  * MBEDTLS_PLATFORM_{FREE,CALLOC}_MACROs will provide
172  * "mbedtls_platform_set_calloc_free()" allowing you to set an alternative calloc() and
173  * free() function pointer at runtime.
174  *
175  * Enabling MBEDTLS_PLATFORM_MEMORY and specifying
176  * MBEDTLS_PLATFORM_{CALLOC,FREE}_MACROs will allow you to specify the
177  * alternate function at compile time.
178  *
179  * Requires: MBEDTLS_PLATFORM_C
180  *
181  * Enable this layer to allow use of alternative memory allocators.
182  */
183 #define MBEDTLS_PLATFORM_MEMORY
184 
185 /**
186  * \def MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
187  *
188  * Do not assign standard functions in the platform layer (e.g. calloc() to
189  * MBEDTLS_PLATFORM_STD_CALLOC and printf() to MBEDTLS_PLATFORM_STD_PRINTF)
190  *
191  * This makes sure there are no linking errors on platforms that do not support
192  * these functions. You will HAVE to provide alternatives, either at runtime
193  * via the platform_set_xxx() functions or at compile time by setting
194  * the MBEDTLS_PLATFORM_STD_XXX defines, or enabling a
195  * MBEDTLS_PLATFORM_XXX_MACRO.
196  *
197  * Requires: MBEDTLS_PLATFORM_C
198  *
199  * Uncomment to prevent default assignment of standard functions in the
200  * platform layer.
201  */
202 #define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
203 
204 /**
205  * \def MBEDTLS_PLATFORM_EXIT_ALT
206  *
207  * MBEDTLS_PLATFORM_XXX_ALT: Uncomment a macro to let mbed TLS support the
208  * function in the platform abstraction layer.
209  *
210  * Example: In case you uncomment MBEDTLS_PLATFORM_PRINTF_ALT, mbed TLS will
211  * provide a function "mbedtls_platform_set_printf()" that allows you to set an
212  * alternative printf function pointer.
213  *
214  * All these define require MBEDTLS_PLATFORM_C to be defined!
215  *
216  * \note MBEDTLS_PLATFORM_SNPRINTF_ALT is required on Windows;
217  * it will be enabled automatically by check_config.h
218  *
219  * \warning MBEDTLS_PLATFORM_XXX_ALT cannot be defined at the same time as
220  * MBEDTLS_PLATFORM_XXX_MACRO!
221  *
222  * Requires: MBEDTLS_PLATFORM_TIME_ALT requires MBEDTLS_HAVE_TIME
223  *
224  * Uncomment a macro to enable alternate implementation of specific base
225  * platform function
226  */
227 //#define MBEDTLS_PLATFORM_EXIT_ALT
228 #define MBEDTLS_PLATFORM_TIME_ALT
229 //#define MBEDTLS_PLATFORM_FPRINTF_ALT
230 //#define MBEDTLS_PLATFORM_PRINTF_ALT
231 #define MBEDTLS_PLATFORM_SNPRINTF_ALT
232 //#define MBEDTLS_PLATFORM_VSNPRINTF_ALT
233 //#define MBEDTLS_PLATFORM_NV_SEED_ALT
234 //#define MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT
235 
236 /**
237  * \def MBEDTLS_DEPRECATED_WARNING
238  *
239  * Mark deprecated functions and features so that they generate a warning if
240  * used. Functionality deprecated in one version will usually be removed in the
241  * next version. You can enable this to help you prepare the transition to a
242  * new major version by making sure your code is not using this functionality.
243  *
244  * This only works with GCC and Clang. With other compilers, you may want to
245  * use MBEDTLS_DEPRECATED_REMOVED
246  *
247  * Uncomment to get warnings on using deprecated functions and features.
248  */
249 //#define MBEDTLS_DEPRECATED_WARNING
250 
251 /**
252  * \def MBEDTLS_DEPRECATED_REMOVED
253  *
254  * Remove deprecated functions and features so that they generate an error if
255  * used. Functionality deprecated in one version will usually be removed in the
256  * next version. You can enable this to help you prepare the transition to a
257  * new major version by making sure your code is not using this functionality.
258  *
259  * Uncomment to get errors on using deprecated functions and features.
260  */
261 //#define MBEDTLS_DEPRECATED_REMOVED
262 
263 /* \} name SECTION: System support */
264 
265 /**
266  * \name SECTION: mbed TLS feature support
267  *
268  * This section sets support for features that are or are not needed
269  * within the modules that are enabled.
270  * \{
271  */
272 
273 /**
274  * \def MBEDTLS_TIMING_ALT
275  *
276  * Uncomment to provide your own alternate implementation for
277  * mbedtls_timing_get_timer(), mbedtls_set_alarm(), mbedtls_set/get_delay()
278  *
279  * Only works if you have MBEDTLS_TIMING_C enabled.
280  *
281  * You will need to provide a header "timing_alt.h" and an implementation at
282  * compile time.
283  */
284 //#define MBEDTLS_TIMING_ALT
285 
286 /**
287  * \def MBEDTLS_AES_ALT
288  *
289  * MBEDTLS__MODULE_NAME__ALT: Uncomment a macro to let mbed TLS use your
290  * alternate core implementation of a symmetric crypto, an arithmetic or hash
291  * module (e.g. platform specific assembly optimized implementations). Keep
292  * in mind that the function prototypes should remain the same.
293  *
294  * This replaces the whole module. If you only want to replace one of the
295  * functions, use one of the MBEDTLS__FUNCTION_NAME__ALT flags.
296  *
297  * Example: In case you uncomment MBEDTLS_AES_ALT, mbed TLS will no longer
298  * provide the "struct mbedtls_aes_context" definition and omit the base
299  * function declarations and implementations. "aes_alt.h" will be included from
300  * "aes.h" to include the new function definitions.
301  *
302  * Uncomment a macro to enable alternate implementation of the corresponding
303  * module.
304  *
305  * \warning   MD5, DES and SHA-1 are considered weak and their
306  *            use constitutes a security risk. If possible, we recommend
307  *            avoiding dependencies on them, and considering stronger message
308  *            digests and ciphers instead.
309  *
310  */
311 //#define MBEDTLS_AES_ALT
312 //#define MBEDTLS_ARIA_ALT
313 //#define MBEDTLS_CAMELLIA_ALT
314 //#define MBEDTLS_CCM_ALT
315 //#define MBEDTLS_CHACHA20_ALT
316 //#define MBEDTLS_CHACHAPOLY_ALT
317 //#define MBEDTLS_CMAC_ALT
318 //#define MBEDTLS_DES_ALT
319 //#define MBEDTLS_DHM_ALT
320 //#define MBEDTLS_ECJPAKE_ALT
321 //#define MBEDTLS_GCM_ALT
322 //#define MBEDTLS_NIST_KW_ALT
323 //#define MBEDTLS_MD5_ALT
324 //#define MBEDTLS_POLY1305_ALT
325 //#define MBEDTLS_RIPEMD160_ALT
326 //#define MBEDTLS_RSA_ALT
327 //#define MBEDTLS_SHA1_ALT
328 //#define MBEDTLS_SHA256_ALT
329 //#define MBEDTLS_SHA512_ALT
330 
331 /*
332  * When replacing the elliptic curve module, pleace consider, that it is
333  * implemented with two .c files:
334  *      - ecp.c
335  *      - ecp_curves.c
336  * You can replace them very much like all the other MBEDTLS__MODULE_NAME__ALT
337  * macros as described above. The only difference is that you have to make sure
338  * that you provide functionality for both .c files.
339  */
340 //#define MBEDTLS_ECP_ALT
341 
342 /**
343  * \def MBEDTLS_SHA256_PROCESS_ALT
344  *
345  * MBEDTLS__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use you
346  * alternate core implementation of symmetric crypto or hash function. Keep in
347  * mind that function prototypes should remain the same.
348  *
349  * This replaces only one function. The header file from mbed TLS is still
350  * used, in contrast to the MBEDTLS__MODULE_NAME__ALT flags.
351  *
352  * Example: In case you uncomment MBEDTLS_SHA256_PROCESS_ALT, mbed TLS will
353  * no longer provide the mbedtls_sha1_process() function, but it will still provide
354  * the other function (using your mbedtls_sha1_process() function) and the definition
355  * of mbedtls_sha1_context, so your implementation of mbedtls_sha1_process must be compatible
356  * with this definition.
357  *
358  * \note If you use the AES_xxx_ALT macros, then it is recommended to also set
359  *       MBEDTLS_AES_ROM_TABLES in order to help the linker garbage-collect the AES
360  *       tables.
361  *
362  * Uncomment a macro to enable alternate implementation of the corresponding
363  * function.
364  *
365  * \warning   MD5, DES and SHA-1 are considered weak and their use
366  *            constitutes a security risk. If possible, we recommend avoiding
367  *            dependencies on them, and considering stronger message digests
368  *            and ciphers instead.
369  *
370  * \warning   If both MBEDTLS_ECDSA_SIGN_ALT and MBEDTLS_ECDSA_DETERMINISTIC are
371  *            enabled, then the deterministic ECDH signature functions pass the
372  *            the static HMAC-DRBG as RNG to mbedtls_ecdsa_sign(). Therefore
373  *            alternative implementations should use the RNG only for generating
374  *            the ephemeral key and nothing else. If this is not possible, then
375  *            MBEDTLS_ECDSA_DETERMINISTIC should be disabled and an alternative
376  *            implementation should be provided for mbedtls_ecdsa_sign_det_ext().
377  *
378  */
379 //#define MBEDTLS_MD5_PROCESS_ALT
380 //#define MBEDTLS_RIPEMD160_PROCESS_ALT
381 //#define MBEDTLS_SHA1_PROCESS_ALT
382 //#define MBEDTLS_SHA256_PROCESS_ALT
383 //#define MBEDTLS_SHA512_PROCESS_ALT
384 //#define MBEDTLS_DES_SETKEY_ALT
385 //#define MBEDTLS_DES_CRYPT_ECB_ALT
386 //#define MBEDTLS_DES3_CRYPT_ECB_ALT
387 //#define MBEDTLS_AES_SETKEY_ENC_ALT
388 //#define MBEDTLS_AES_SETKEY_DEC_ALT
389 //#define MBEDTLS_AES_ENCRYPT_ALT
390 //#define MBEDTLS_AES_DECRYPT_ALT
391 //#define MBEDTLS_ECDH_GEN_PUBLIC_ALT
392 //#define MBEDTLS_ECDH_COMPUTE_SHARED_ALT
393 //#define MBEDTLS_ECDSA_VERIFY_ALT
394 //#define MBEDTLS_ECDSA_SIGN_ALT
395 //#define MBEDTLS_ECDSA_GENKEY_ALT
396 
397 /**
398  * \def MBEDTLS_ECP_INTERNAL_ALT
399  *
400  * Expose a part of the internal interface of the Elliptic Curve Point module.
401  *
402  * MBEDTLS_ECP__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use your
403  * alternative core implementation of elliptic curve arithmetic. Keep in mind
404  * that function prototypes should remain the same.
405  *
406  * This partially replaces one function. The header file from mbed TLS is still
407  * used, in contrast to the MBEDTLS_ECP_ALT flag. The original implementation
408  * is still present and it is used for group structures not supported by the
409  * alternative.
410  *
411  * The original implementation can in addition be removed by setting the
412  * MBEDTLS_ECP_NO_FALLBACK option, in which case any function for which the
413  * corresponding MBEDTLS_ECP__FUNCTION_NAME__ALT macro is defined will not be
414  * able to fallback to curves not supported by the alternative implementation.
415  *
416  * Any of these options become available by defining MBEDTLS_ECP_INTERNAL_ALT
417  * and implementing the following functions:
418  *      unsigned char mbedtls_internal_ecp_grp_capable(
419  *          const mbedtls_ecp_group *grp )
420  *      int  mbedtls_internal_ecp_init( const mbedtls_ecp_group *grp )
421  *      void mbedtls_internal_ecp_free( const mbedtls_ecp_group *grp )
422  * The mbedtls_internal_ecp_grp_capable function should return 1 if the
423  * replacement functions implement arithmetic for the given group and 0
424  * otherwise.
425  * The functions mbedtls_internal_ecp_init and mbedtls_internal_ecp_free are
426  * called before and after each point operation and provide an opportunity to
427  * implement optimized set up and tear down instructions.
428  *
429  * Example: In case you set MBEDTLS_ECP_INTERNAL_ALT and
430  * MBEDTLS_ECP_DOUBLE_JAC_ALT, mbed TLS will still provide the ecp_double_jac()
431  * function, but will use your mbedtls_internal_ecp_double_jac() if the group
432  * for the operation is supported by your implementation (i.e. your
433  * mbedtls_internal_ecp_grp_capable() function returns 1 for this group). If the
434  * group is not supported by your implementation, then the original mbed TLS
435  * implementation of ecp_double_jac() is used instead, unless this fallback
436  * behaviour is disabled by setting MBEDTLS_ECP_NO_FALLBACK (in which case
437  * ecp_double_jac() will return MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE).
438  *
439  * The function prototypes and the definition of mbedtls_ecp_group and
440  * mbedtls_ecp_point will not change based on MBEDTLS_ECP_INTERNAL_ALT, so your
441  * implementation of mbedtls_internal_ecp__function_name__ must be compatible
442  * with their definitions.
443  *
444  * Uncomment a macro to enable alternate implementation of the corresponding
445  * function.
446  */
447 /* Required for all the functions in this section */
448 //#define MBEDTLS_ECP_INTERNAL_ALT
449 /* Turn off software fallback for curves not supported in hardware */
450 //#define MBEDTLS_ECP_NO_FALLBACK
451 /* Support for Weierstrass curves with Jacobi representation */
452 //#define MBEDTLS_ECP_RANDOMIZE_JAC_ALT
453 //#define MBEDTLS_ECP_ADD_MIXED_ALT
454 //#define MBEDTLS_ECP_DOUBLE_JAC_ALT
455 //#define MBEDTLS_ECP_NORMALIZE_JAC_MANY_ALT
456 //#define MBEDTLS_ECP_NORMALIZE_JAC_ALT
457 /* Support for curves with Montgomery arithmetic */
458 //#define MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT
459 //#define MBEDTLS_ECP_RANDOMIZE_MXZ_ALT
460 //#define MBEDTLS_ECP_NORMALIZE_MXZ_ALT
461 
462 /**
463  * \def MBEDTLS_ENTROPY_HARDWARE_ALT
464  *
465  * Uncomment this macro to let mbed TLS use your own implementation of a
466  * hardware entropy collector.
467  *
468  * Your function must be called \c mbedtls_hardware_poll(), have the same
469  * prototype as declared in library/entropy_poll.h, and accept NULL as first
470  * argument.
471  *
472  * Uncomment to use your own hardware entropy collector.
473  */
474 //#define MBEDTLS_ENTROPY_HARDWARE_ALT
475 
476 /**
477  * \def MBEDTLS_AES_ROM_TABLES
478  *
479  * Use precomputed AES tables stored in ROM.
480  *
481  * Uncomment this macro to use precomputed AES tables stored in ROM.
482  * Comment this macro to generate AES tables in RAM at runtime.
483  *
484  * Tradeoff: Using precomputed ROM tables reduces RAM usage by ~8kb
485  * (or ~2kb if \c MBEDTLS_AES_FEWER_TABLES is used) and reduces the
486  * initialization time before the first AES operation can be performed.
487  * It comes at the cost of additional ~8kb ROM use (resp. ~2kb if \c
488  * MBEDTLS_AES_FEWER_TABLES below is used), and potentially degraded
489  * performance if ROM access is slower than RAM access.
490  *
491  * This option is independent of \c MBEDTLS_AES_FEWER_TABLES.
492  *
493  */
494 #define MBEDTLS_AES_ROM_TABLES
495 
496 /**
497  * \def MBEDTLS_AES_FEWER_TABLES
498  *
499  * Use less ROM/RAM for AES tables.
500  *
501  * Uncommenting this macro omits 75% of the AES tables from
502  * ROM / RAM (depending on the value of \c MBEDTLS_AES_ROM_TABLES)
503  * by computing their values on the fly during operations
504  * (the tables are entry-wise rotations of one another).
505  *
506  * Tradeoff: Uncommenting this reduces the RAM / ROM footprint
507  * by ~6kb but at the cost of more arithmetic operations during
508  * runtime. Specifically, one has to compare 4 accesses within
509  * different tables to 4 accesses with additional arithmetic
510  * operations within the same table. The performance gain/loss
511  * depends on the system and memory details.
512  *
513  * This option is independent of \c MBEDTLS_AES_ROM_TABLES.
514  *
515  */
516 //#define MBEDTLS_AES_FEWER_TABLES
517 
518 /**
519  * \def MBEDTLS_CAMELLIA_SMALL_MEMORY
520  *
521  * Use less ROM for the Camellia implementation (saves about 768 bytes).
522  *
523  * Uncomment this macro to use less memory for Camellia.
524  */
525 //#define MBEDTLS_CAMELLIA_SMALL_MEMORY
526 
527 /**
528  * \def MBEDTLS_CHECK_RETURN_WARNING
529  *
530  * If this macro is defined, emit a compile-time warning if application code
531  * calls a function without checking its return value, but the return value
532  * should generally be checked in portable applications.
533  *
534  * This is only supported on platforms where #MBEDTLS_CHECK_RETURN is
535  * implemented. Otherwise this option has no effect.
536  *
537  * Uncomment to get warnings on using fallible functions without checking
538  * their return value.
539  *
540  * \note  This feature is a work in progress.
541  *        Warnings will be added to more functions in the future.
542  *
543  * \note  A few functions are considered critical, and ignoring the return
544  *        value of these functions will trigger a warning even if this
545  *        macro is not defined. To completely disable return value check
546  *        warnings, define #MBEDTLS_CHECK_RETURN with an empty expansion.
547  */
548 //#define MBEDTLS_CHECK_RETURN_WARNING
549 
550 /**
551  * \def MBEDTLS_CIPHER_MODE_CBC
552  *
553  * Enable Cipher Block Chaining mode (CBC) for symmetric ciphers.
554  */
555 #define MBEDTLS_CIPHER_MODE_CBC
556 
557 /**
558  * \def MBEDTLS_CIPHER_MODE_CFB
559  *
560  * Enable Cipher Feedback mode (CFB) for symmetric ciphers.
561  */
562 #define MBEDTLS_CIPHER_MODE_CFB
563 
564 /**
565  * \def MBEDTLS_CIPHER_MODE_CTR
566  *
567  * Enable Counter Block Cipher mode (CTR) for symmetric ciphers.
568  */
569 #define MBEDTLS_CIPHER_MODE_CTR
570 
571 /**
572  * \def MBEDTLS_CIPHER_MODE_OFB
573  *
574  * Enable Output Feedback mode (OFB) for symmetric ciphers.
575  */
576 #define MBEDTLS_CIPHER_MODE_OFB
577 
578 /**
579  * \def MBEDTLS_CIPHER_MODE_XTS
580  *
581  * Enable Xor-encrypt-xor with ciphertext stealing mode (XTS) for AES.
582  */
583 #define MBEDTLS_CIPHER_MODE_XTS
584 
585 /**
586  * \def MBEDTLS_CIPHER_NULL_CIPHER
587  *
588  * Enable NULL cipher.
589  * Warning: Only do so when you know what you are doing. This allows for
590  * encryption or channels without any security!
591  *
592  * To enable the following ciphersuites:
593  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_NULL_SHA
594  *      MBEDTLS_TLS_ECDH_RSA_WITH_NULL_SHA
595  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_NULL_SHA
596  *      MBEDTLS_TLS_ECDHE_RSA_WITH_NULL_SHA
597  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA384
598  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA256
599  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA
600  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA384
601  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA256
602  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA
603  *      MBEDTLS_TLS_RSA_WITH_NULL_SHA256
604  *      MBEDTLS_TLS_RSA_WITH_NULL_SHA
605  *      MBEDTLS_TLS_RSA_WITH_NULL_MD5
606  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA384
607  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA256
608  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA
609  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA384
610  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA256
611  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA
612  *
613  * Uncomment this macro to enable the NULL cipher and ciphersuites
614  */
615 //#define MBEDTLS_CIPHER_NULL_CIPHER
616 
617 /**
618  * \def MBEDTLS_CIPHER_PADDING_PKCS7
619  *
620  * MBEDTLS_CIPHER_PADDING_XXX: Uncomment or comment macros to add support for
621  * specific padding modes in the cipher layer with cipher modes that support
622  * padding (e.g. CBC)
623  *
624  * If you disable all padding modes, only full blocks can be used with CBC.
625  *
626  * Enable padding modes in the cipher layer.
627  */
628 #define MBEDTLS_CIPHER_PADDING_PKCS7
629 #define MBEDTLS_CIPHER_PADDING_ONE_AND_ZEROS
630 #define MBEDTLS_CIPHER_PADDING_ZEROS_AND_LEN
631 #define MBEDTLS_CIPHER_PADDING_ZEROS
632 
633 /** \def MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
634  *
635  * Uncomment this macro to use a 128-bit key in the CTR_DRBG module.
636  * By default, CTR_DRBG uses a 256-bit key.
637  */
638 //#define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
639 
640 /**
641  * \def MBEDTLS_ECP_DP_SECP192R1_ENABLED
642  *
643  * MBEDTLS_ECP_XXXX_ENABLED: Enables specific curves within the Elliptic Curve
644  * module.  By default all supported curves are enabled.
645  *
646  * Comment macros to disable the curve and functions for it
647  */
648 /* Short Weierstrass curves (supporting ECP, ECDH, ECDSA) */
649 #define MBEDTLS_ECP_DP_SECP192R1_ENABLED
650 #define MBEDTLS_ECP_DP_SECP224R1_ENABLED
651 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
652 #define MBEDTLS_ECP_DP_SECP384R1_ENABLED
653 #define MBEDTLS_ECP_DP_SECP521R1_ENABLED
654 #define MBEDTLS_ECP_DP_SECP192K1_ENABLED
655 #define MBEDTLS_ECP_DP_SECP224K1_ENABLED
656 #define MBEDTLS_ECP_DP_SECP256K1_ENABLED
657 #define MBEDTLS_ECP_DP_BP256R1_ENABLED
658 #define MBEDTLS_ECP_DP_BP384R1_ENABLED
659 #define MBEDTLS_ECP_DP_BP512R1_ENABLED
660 /* Montgomery curves (supporting ECP) */
661 #define MBEDTLS_ECP_DP_CURVE25519_ENABLED
662 #define MBEDTLS_ECP_DP_CURVE448_ENABLED
663 
664 /**
665  * \def MBEDTLS_ECP_NIST_OPTIM
666  *
667  * Enable specific 'modulo p' routines for each NIST prime.
668  * Depending on the prime and architecture, makes operations 4 to 8 times
669  * faster on the corresponding curve.
670  *
671  * Comment this macro to disable NIST curves optimisation.
672  */
673 #define MBEDTLS_ECP_NIST_OPTIM
674 
675 /**
676  * \def MBEDTLS_ECP_RESTARTABLE
677  *
678  * Enable "non-blocking" ECC operations that can return early and be resumed.
679  *
680  * This allows various functions to pause by returning
681  * #MBEDTLS_ERR_ECP_IN_PROGRESS (or, for functions in the SSL module,
682  * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) and then be called later again in
683  * order to further progress and eventually complete their operation. This is
684  * controlled through mbedtls_ecp_set_max_ops() which limits the maximum
685  * number of ECC operations a function may perform before pausing; see
686  * mbedtls_ecp_set_max_ops() for more information.
687  *
688  * This is useful in non-threaded environments if you want to avoid blocking
689  * for too long on ECC (and, hence, X.509 or SSL/TLS) operations.
690  *
691  * Uncomment this macro to enable restartable ECC computations.
692  *
693  * \note  This option only works with the default software implementation of
694  *        elliptic curve functionality. It is incompatible with
695  *        MBEDTLS_ECP_ALT, MBEDTLS_ECDH_XXX_ALT, MBEDTLS_ECDSA_XXX_ALT.
696  */
697 //#define MBEDTLS_ECP_RESTARTABLE
698 
699 /**
700  * \def MBEDTLS_ECDSA_DETERMINISTIC
701  *
702  * Enable deterministic ECDSA (RFC 6979).
703  * Standard ECDSA is "fragile" in the sense that lack of entropy when signing
704  * may result in a compromise of the long-term signing key. This is avoided by
705  * the deterministic variant.
706  *
707  * Requires: MBEDTLS_HMAC_DRBG_C, MBEDTLS_ECDSA_C
708  *
709  * Comment this macro to disable deterministic ECDSA.
710  */
711 //#define MBEDTLS_ECDSA_DETERMINISTIC
712 
713 /**
714  * \def MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
715  *
716  * Enable the PSK based ciphersuite modes in SSL / TLS.
717  *
718  * This enables the following ciphersuites (if other requisites are
719  * enabled as well):
720  *      MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384
721  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384
722  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA
723  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384
724  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384
725  *      MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256
726  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256
727  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA
728  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256
729  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256
730  */
731 //#define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
732 
733 /**
734  * \def MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
735  *
736  * Enable the DHE-PSK based ciphersuite modes in SSL / TLS.
737  *
738  * Requires: MBEDTLS_DHM_C
739  *
740  * This enables the following ciphersuites (if other requisites are
741  * enabled as well):
742  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
743  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
744  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA
745  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384
746  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
747  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
748  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
749  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA
750  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256
751  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
752  *
753  * \warning    Using DHE constitutes a security risk as it
754  *             is not possible to validate custom DH parameters.
755  *             If possible, it is recommended users should consider
756  *             preferring other methods of key exchange.
757  *             See dhm.h for more details.
758  *
759  */
760 //#define MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
761 
762 /**
763  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
764  *
765  * Enable the ECDHE-PSK based ciphersuite modes in SSL / TLS.
766  *
767  * Requires: MBEDTLS_ECDH_C
768  *
769  * This enables the following ciphersuites (if other requisites are
770  * enabled as well):
771  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384
772  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA
773  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
774  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256
775  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA
776  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
777  */
778 //#define MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
779 
780 /**
781  * \def MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
782  *
783  * Enable the RSA-PSK based ciphersuite modes in SSL / TLS.
784  *
785  * Requires: MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
786  *           MBEDTLS_X509_CRT_PARSE_C
787  *
788  * This enables the following ciphersuites (if other requisites are
789  * enabled as well):
790  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384
791  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384
792  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA
793  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384
794  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384
795  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256
796  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256
797  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA
798  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256
799  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256
800  */
801 //#define MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
802 
803 /**
804  * \def MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
805  *
806  * Enable the RSA-only based ciphersuite modes in SSL / TLS.
807  *
808  * Requires: MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
809  *           MBEDTLS_X509_CRT_PARSE_C
810  *
811  * This enables the following ciphersuites (if other requisites are
812  * enabled as well):
813  *      MBEDTLS_TLS_RSA_WITH_AES_256_GCM_SHA384
814  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA256
815  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA
816  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384
817  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
818  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
819  *      MBEDTLS_TLS_RSA_WITH_AES_128_GCM_SHA256
820  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA256
821  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA
822  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256
823  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
824  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
825  */
826 //#define MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
827 
828 /**
829  * \def MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
830  *
831  * Enable the DHE-RSA based ciphersuite modes in SSL / TLS.
832  *
833  * Requires: MBEDTLS_DHM_C, MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
834  *           MBEDTLS_X509_CRT_PARSE_C
835  *
836  * This enables the following ciphersuites (if other requisites are
837  * enabled as well):
838  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
839  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
840  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
841  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
842  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
843  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
844  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
845  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
846  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
847  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
848  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
849  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
850  *
851  * \warning    Using DHE constitutes a security risk as it
852  *             is not possible to validate custom DH parameters.
853  *             If possible, it is recommended users should consider
854  *             preferring other methods of key exchange.
855  *             See dhm.h for more details.
856  *
857  */
858 //#define MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
859 
860 /**
861  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
862  *
863  * Enable the ECDHE-RSA based ciphersuite modes in SSL / TLS.
864  *
865  * Requires: MBEDTLS_ECDH_C, MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
866  *           MBEDTLS_X509_CRT_PARSE_C
867  *
868  * This enables the following ciphersuites (if other requisites are
869  * enabled as well):
870  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
871  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
872  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
873  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
874  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
875  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
876  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
877  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
878  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
879  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
880  */
881 #define MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
882 
883 /**
884  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
885  *
886  * Enable the ECDHE-ECDSA based ciphersuite modes in SSL / TLS.
887  *
888  * Requires: MBEDTLS_ECDH_C, MBEDTLS_ECDSA_C, MBEDTLS_X509_CRT_PARSE_C,
889  *
890  * This enables the following ciphersuites (if other requisites are
891  * enabled as well):
892  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
893  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
894  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
895  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
896  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
897  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
898  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
899  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
900  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
901  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
902  */
903 //#define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
904 
905 /**
906  * \def MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
907  *
908  * Enable the ECDH-ECDSA based ciphersuite modes in SSL / TLS.
909  *
910  * Requires: MBEDTLS_ECDH_C, MBEDTLS_ECDSA_C, MBEDTLS_X509_CRT_PARSE_C
911  *
912  * This enables the following ciphersuites (if other requisites are
913  * enabled as well):
914  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
915  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
916  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
917  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
918  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
919  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
920  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
921  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
922  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
923  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
924  */
925 //#define MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
926 
927 /**
928  * \def MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
929  *
930  * Enable the ECDH-RSA based ciphersuite modes in SSL / TLS.
931  *
932  * Requires: MBEDTLS_ECDH_C, MBEDTLS_RSA_C, MBEDTLS_X509_CRT_PARSE_C
933  *
934  * This enables the following ciphersuites (if other requisites are
935  * enabled as well):
936  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
937  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
938  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
939  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
940  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
941  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
942  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256
943  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384
944  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256
945  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384
946  */
947 //#define MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
948 
949 /**
950  * \def MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
951  *
952  * Enable the ECJPAKE based ciphersuite modes in SSL / TLS.
953  *
954  * \warning This is currently experimental. EC J-PAKE support is based on the
955  * Thread v1.0.0 specification; incompatible changes to the specification
956  * might still happen. For this reason, this is disabled by default.
957  *
958  * Requires: MBEDTLS_ECJPAKE_C
959  *           MBEDTLS_SHA256_C
960  *           MBEDTLS_ECP_DP_SECP256R1_ENABLED
961  *
962  * This enables the following ciphersuites (if other requisites are
963  * enabled as well):
964  *      MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8
965  */
966 //#define MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
967 
968 /**
969  * \def MBEDTLS_PK_PARSE_EC_EXTENDED
970  *
971  * Enhance support for reading EC keys using variants of SEC1 not allowed by
972  * RFC 5915 and RFC 5480.
973  *
974  * Currently this means parsing the SpecifiedECDomain choice of EC
975  * parameters (only known groups are supported, not arbitrary domains, to
976  * avoid validation issues).
977  *
978  * Disable if you only need to support RFC 5915 + 5480 key formats.
979  */
980 //#define MBEDTLS_PK_PARSE_EC_EXTENDED
981 
982 /**
983  * \def MBEDTLS_ERROR_STRERROR_DUMMY
984  *
985  * Enable a dummy error function to make use of mbedtls_strerror() in
986  * third party libraries easier when MBEDTLS_ERROR_C is disabled
987  * (no effect when MBEDTLS_ERROR_C is enabled).
988  *
989  * You can safely disable this if MBEDTLS_ERROR_C is enabled, or if you're
990  * not using mbedtls_strerror() or error_strerror() in your application.
991  *
992  * Disable if you run into name conflicts and want to really remove the
993  * mbedtls_strerror()
994  */
995 #define MBEDTLS_ERROR_STRERROR_DUMMY
996 
997 /**
998  * \def MBEDTLS_GENPRIME
999  *
1000  * Enable the prime-number generation code.
1001  *
1002  * Requires: MBEDTLS_BIGNUM_C
1003  */
1004 #define MBEDTLS_GENPRIME
1005 
1006 /**
1007  * \def MBEDTLS_FS_IO
1008  *
1009  * Enable functions that use the filesystem.
1010  */
1011 #define MBEDTLS_FS_IO
1012 
1013 /**
1014  * \def MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
1015  *
1016  * Do not add default entropy sources in mbedtls_entropy_init().
1017  *
1018  * This is useful to have more control over the added entropy sources in an
1019  * application.
1020  *
1021  * Uncomment this macro to prevent loading of default entropy functions.
1022  */
1023 //#define MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
1024 
1025 /**
1026  * \def MBEDTLS_NO_PLATFORM_ENTROPY
1027  *
1028  * Do not use built-in platform entropy functions.
1029  * This is useful if your platform does not support
1030  * standards like the /dev/urandom or Windows CryptoAPI.
1031  *
1032  * Uncomment this macro to disable the built-in platform entropy functions.
1033  */
1034 //#define MBEDTLS_NO_PLATFORM_ENTROPY
1035 
1036 /**
1037  * \def MBEDTLS_ENTROPY_FORCE_SHA256
1038  *
1039  * Force the entropy accumulator to use a SHA-256 accumulator instead of the
1040  * default SHA-512 based one (if both are available).
1041  *
1042  * Requires: MBEDTLS_SHA256_C
1043  *
1044  * On 32-bit systems SHA-256 can be much faster than SHA-512. Use this option
1045  * if you have performance concerns.
1046  *
1047  * This option is only useful if both MBEDTLS_SHA256_C and
1048  * MBEDTLS_SHA512_C are defined. Otherwise the available hash module is used.
1049  */
1050 //#define MBEDTLS_ENTROPY_FORCE_SHA256
1051 
1052 /**
1053  * \def MBEDTLS_ENTROPY_NV_SEED
1054  *
1055  * Enable the non-volatile (NV) seed file-based entropy source.
1056  * (Also enables the NV seed read/write functions in the platform layer)
1057  *
1058  * This is crucial (if not required) on systems that do not have a
1059  * cryptographic entropy source (in hardware or kernel) available.
1060  *
1061  * Requires: MBEDTLS_ENTROPY_C, MBEDTLS_PLATFORM_C
1062  *
1063  * \note The read/write functions that are used by the entropy source are
1064  *       determined in the platform layer, and can be modified at runtime and/or
1065  *       compile-time depending on the flags (MBEDTLS_PLATFORM_NV_SEED_*) used.
1066  *
1067  * \note If you use the default implementation functions that read a seedfile
1068  *       with regular fopen(), please make sure you make a seedfile with the
1069  *       proper name (defined in MBEDTLS_PLATFORM_STD_NV_SEED_FILE) and at
1070  *       least MBEDTLS_ENTROPY_BLOCK_SIZE bytes in size that can be read from
1071  *       and written to or you will get an entropy source error! The default
1072  *       implementation will only use the first MBEDTLS_ENTROPY_BLOCK_SIZE
1073  *       bytes from the file.
1074  *
1075  * \note The entropy collector will write to the seed file before entropy is
1076  *       given to an external source, to update it.
1077  */
1078 //#define MBEDTLS_ENTROPY_NV_SEED
1079 
1080 /* MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
1081  *
1082  * Enable key identifiers that encode a key owner identifier.
1083  *
1084  * The owner of a key is identified by a value of type ::mbedtls_key_owner_id_t
1085  * which is currently hard-coded to be int32_t.
1086  *
1087  * Note that this option is meant for internal use only and may be removed
1088  * without notice. It is incompatible with MBEDTLS_USE_PSA_CRYPTO.
1089  */
1090 //#define MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
1091 
1092 /**
1093  * \def MBEDTLS_MEMORY_DEBUG
1094  *
1095  * Enable debugging of buffer allocator memory issues. Automatically prints
1096  * (to stderr) all (fatal) messages on memory allocation issues. Enables
1097  * function for 'debug output' of allocated memory.
1098  *
1099  * Requires: MBEDTLS_MEMORY_BUFFER_ALLOC_C
1100  *
1101  * Uncomment this macro to let the buffer allocator print out error messages.
1102  */
1103 //#define MBEDTLS_MEMORY_DEBUG
1104 
1105 /**
1106  * \def MBEDTLS_MEMORY_BACKTRACE
1107  *
1108  * Include backtrace information with each allocated block.
1109  *
1110  * Requires: MBEDTLS_MEMORY_BUFFER_ALLOC_C
1111  *           GLIBC-compatible backtrace() an backtrace_symbols() support
1112  *
1113  * Uncomment this macro to include backtrace information
1114  */
1115 //#define MBEDTLS_MEMORY_BACKTRACE
1116 
1117 /**
1118  * \def MBEDTLS_PK_RSA_ALT_SUPPORT
1119  *
1120  * Support external private RSA keys (eg from a HSM) in the PK layer.
1121  *
1122  * Comment this macro to disable support for external private RSA keys.
1123  */
1124 #define MBEDTLS_PK_RSA_ALT_SUPPORT
1125 
1126 /**
1127  * \def MBEDTLS_PKCS1_V15
1128  *
1129  * Enable support for PKCS#1 v1.5 encoding.
1130  *
1131  * Requires: MBEDTLS_RSA_C
1132  *
1133  * This enables support for PKCS#1 v1.5 operations.
1134  */
1135 #define MBEDTLS_PKCS1_V15
1136 
1137 /**
1138  * \def MBEDTLS_PKCS1_V21
1139  *
1140  * Enable support for PKCS#1 v2.1 encoding.
1141  *
1142  * Requires: MBEDTLS_MD_C, MBEDTLS_RSA_C
1143  *
1144  * This enables support for RSAES-OAEP and RSASSA-PSS operations.
1145  */
1146 #define MBEDTLS_PKCS1_V21
1147 
1148 /** \def MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS
1149  *
1150  * Enable support for platform built-in keys. If you enable this feature,
1151  * you must implement the function mbedtls_psa_platform_get_builtin_key().
1152  * See the documentation of that function for more information.
1153  *
1154  * Built-in keys are typically derived from a hardware unique key or
1155  * stored in a secure element.
1156  *
1157  * Requires: MBEDTLS_PSA_CRYPTO_C.
1158  *
1159  * \warning This interface is experimental and may change or be removed
1160  * without notice.
1161  */
1162 //#define MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS
1163 
1164 /** \def MBEDTLS_PSA_CRYPTO_CLIENT
1165  *
1166  * Enable support for PSA crypto client.
1167  *
1168  * \note This option allows to include the code necessary for a PSA
1169  *       crypto client when the PSA crypto implementation is not included in
1170  *       the library (MBEDTLS_PSA_CRYPTO_C disabled). The code included is the
1171  *       code to set and get PSA key attributes.
1172  *       The development of PSA drivers partially relying on the library to
1173  *       fulfill the hardware gaps is another possible usage of this option.
1174  *
1175  * \warning This interface is experimental and may change or be removed
1176  * without notice.
1177  */
1178 //#define MBEDTLS_PSA_CRYPTO_CLIENT
1179 
1180 /** \def MBEDTLS_PSA_CRYPTO_DRIVERS
1181  *
1182  * Enable support for the experimental PSA crypto driver interface.
1183  *
1184  * Requires: MBEDTLS_PSA_CRYPTO_C
1185  *
1186  * \warning This interface is experimental and may change or be removed
1187  * without notice.
1188  */
1189 //#define MBEDTLS_PSA_CRYPTO_DRIVERS
1190 
1191 /** \def MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
1192  *
1193  * Make the PSA Crypto module use an external random generator provided
1194  * by a driver, instead of Mbed TLS's entropy and DRBG modules.
1195  *
1196  * \note This random generator must deliver random numbers with cryptographic
1197  *       quality and high performance. It must supply unpredictable numbers
1198  *       with a uniform distribution. The implementation of this function
1199  *       is responsible for ensuring that the random generator is seeded
1200  *       with sufficient entropy. If you have a hardware TRNG which is slow
1201  *       or delivers non-uniform output, declare it as an entropy source
1202  *       with mbedtls_entropy_add_source() instead of enabling this option.
1203  *
1204  * If you enable this option, you must configure the type
1205  * ::mbedtls_psa_external_random_context_t in psa/crypto_platform.h
1206  * and define a function called mbedtls_psa_external_get_random()
1207  * with the following prototype:
1208  * ```
1209  * psa_status_t mbedtls_psa_external_get_random(
1210  *     mbedtls_psa_external_random_context_t *context,
1211  *     uint8_t *output, size_t output_size, size_t *output_length);
1212  * );
1213  * ```
1214  * The \c context value is initialized to 0 before the first call.
1215  * The function must fill the \c output buffer with \p output_size bytes
1216  * of random data and set \c *output_length to \p output_size.
1217  *
1218  * Requires: MBEDTLS_PSA_CRYPTO_C
1219  *
1220  * \warning If you enable this option, code that uses the PSA cryptography
1221  *          interface will not use any of the entropy sources set up for
1222  *          the entropy module, nor the NV seed that MBEDTLS_ENTROPY_NV_SEED
1223  *          enables.
1224  *
1225  * \note This option is experimental and may be removed without notice.
1226  */
1227 //#define MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
1228 
1229 /**
1230  * \def MBEDTLS_PSA_CRYPTO_SPM
1231  *
1232  * When MBEDTLS_PSA_CRYPTO_SPM is defined, the code is built for SPM (Secure
1233  * Partition Manager) integration which separates the code into two parts: a
1234  * NSPE (Non-Secure Process Environment) and an SPE (Secure Process
1235  * Environment).
1236  *
1237  * Module:  library/psa_crypto.c
1238  * Requires: MBEDTLS_PSA_CRYPTO_C
1239  *
1240  */
1241 //#define MBEDTLS_PSA_CRYPTO_SPM
1242 
1243 /**
1244  * \def MBEDTLS_PSA_INJECT_ENTROPY
1245  *
1246  * Enable support for entropy injection at first boot. This feature is
1247  * required on systems that do not have a built-in entropy source (TRNG).
1248  * This feature is currently not supported on systems that have a built-in
1249  * entropy source.
1250  *
1251  * Requires: MBEDTLS_PSA_CRYPTO_STORAGE_C, MBEDTLS_ENTROPY_NV_SEED
1252  *
1253  */
1254 //#define MBEDTLS_PSA_INJECT_ENTROPY
1255 
1256 /**
1257  * \def MBEDTLS_RSA_NO_CRT
1258  *
1259  * Do not use the Chinese Remainder Theorem
1260  * for the RSA private operation.
1261  *
1262  * Uncomment this macro to disable the use of CRT in RSA.
1263  *
1264  */
1265 //#define MBEDTLS_RSA_NO_CRT
1266 
1267 /**
1268  * \def MBEDTLS_SELF_TEST
1269  *
1270  * Enable the checkup functions (*_self_test).
1271  */
1272 //#define MBEDTLS_SELF_TEST
1273 
1274 /**
1275  * \def MBEDTLS_SHA256_SMALLER
1276  *
1277  * Enable an implementation of SHA-256 that has lower ROM footprint but also
1278  * lower performance.
1279  *
1280  * The default implementation is meant to be a reasonnable compromise between
1281  * performance and size. This version optimizes more aggressively for size at
1282  * the expense of performance. Eg on Cortex-M4 it reduces the size of
1283  * mbedtls_sha256_process() from ~2KB to ~0.5KB for a performance hit of about
1284  * 30%.
1285  *
1286  * Uncomment to enable the smaller implementation of SHA256.
1287  */
1288 //#define MBEDTLS_SHA256_SMALLER
1289 
1290 /**
1291  * \def MBEDTLS_SHA512_SMALLER
1292  *
1293  * Enable an implementation of SHA-512 that has lower ROM footprint but also
1294  * lower performance.
1295  *
1296  * Uncomment to enable the smaller implementation of SHA512.
1297  */
1298 //#define MBEDTLS_SHA512_SMALLER
1299 
1300 /**
1301  * \def MBEDTLS_SSL_ALL_ALERT_MESSAGES
1302  *
1303  * Enable sending of alert messages in case of encountered errors as per RFC.
1304  * If you choose not to send the alert messages, mbed TLS can still communicate
1305  * with other servers, only debugging of failures is harder.
1306  *
1307  * The advantage of not sending alert messages, is that no information is given
1308  * about reasons for failures thus preventing adversaries of gaining intel.
1309  *
1310  * Enable sending of all alert messages
1311  */
1312 #define MBEDTLS_SSL_ALL_ALERT_MESSAGES
1313 
1314 /**
1315  * \def MBEDTLS_SSL_DTLS_CONNECTION_ID
1316  *
1317  * Enable support for the DTLS Connection ID extension
1318  * (version draft-ietf-tls-dtls-connection-id-05,
1319  * https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05)
1320  * which allows to identify DTLS connections across changes
1321  * in the underlying transport.
1322  *
1323  * Setting this option enables the SSL APIs `mbedtls_ssl_set_cid()`,
1324  * `mbedtls_ssl_get_peer_cid()` and `mbedtls_ssl_conf_cid()`.
1325  * See the corresponding documentation for more information.
1326  *
1327  * \warning The Connection ID extension is still in draft state.
1328  *          We make no stability promises for the availability
1329  *          or the shape of the API controlled by this option.
1330  *
1331  * The maximum lengths of outgoing and incoming CIDs can be configured
1332  * through the options
1333  * - MBEDTLS_SSL_CID_OUT_LEN_MAX
1334  * - MBEDTLS_SSL_CID_IN_LEN_MAX.
1335  *
1336  * Requires: MBEDTLS_SSL_PROTO_DTLS
1337  *
1338  * Uncomment to enable the Connection ID extension.
1339  */
1340 //#define MBEDTLS_SSL_DTLS_CONNECTION_ID
1341 
1342 /**
1343  * \def MBEDTLS_SSL_ASYNC_PRIVATE
1344  *
1345  * Enable asynchronous external private key operations in SSL. This allows
1346  * you to configure an SSL connection to call an external cryptographic
1347  * module to perform private key operations instead of performing the
1348  * operation inside the library.
1349  *
1350  */
1351 //#define MBEDTLS_SSL_ASYNC_PRIVATE
1352 
1353 /**
1354  * \def MBEDTLS_SSL_CONTEXT_SERIALIZATION
1355  *
1356  * Enable serialization of the TLS context structures, through use of the
1357  * functions mbedtls_ssl_context_save() and mbedtls_ssl_context_load().
1358  *
1359  * This pair of functions allows one side of a connection to serialize the
1360  * context associated with the connection, then free or re-use that context
1361  * while the serialized state is persisted elsewhere, and finally deserialize
1362  * that state to a live context for resuming read/write operations on the
1363  * connection. From a protocol perspective, the state of the connection is
1364  * unaffected, in particular this is entirely transparent to the peer.
1365  *
1366  * Note: this is distinct from TLS session resumption, which is part of the
1367  * protocol and fully visible by the peer. TLS session resumption enables
1368  * establishing new connections associated to a saved session with shorter,
1369  * lighter handshakes, while context serialization is a local optimization in
1370  * handling a single, potentially long-lived connection.
1371  *
1372  * Enabling these APIs makes some SSL structures larger, as 64 extra bytes are
1373  * saved after the handshake to allow for more efficient serialization, so if
1374  * you don't need this feature you'll save RAM by disabling it.
1375  *
1376  * Comment to disable the context serialization APIs.
1377  */
1378 #define MBEDTLS_SSL_CONTEXT_SERIALIZATION
1379 
1380 /**
1381  * \def MBEDTLS_SSL_DEBUG_ALL
1382  *
1383  * Enable the debug messages in SSL module for all issues.
1384  * Debug messages have been disabled in some places to prevent timing
1385  * attacks due to (unbalanced) debugging function calls.
1386  *
1387  * If you need all error reporting you should enable this during debugging,
1388  * but remove this for production servers that should log as well.
1389  *
1390  * Uncomment this macro to report all debug messages on errors introducing
1391  * a timing side-channel.
1392  *
1393  */
1394 //#define MBEDTLS_SSL_DEBUG_ALL
1395 
1396 /** \def MBEDTLS_SSL_ENCRYPT_THEN_MAC
1397  *
1398  * Enable support for Encrypt-then-MAC, RFC 7366.
1399  *
1400  * This allows peers that both support it to use a more robust protection for
1401  * ciphersuites using CBC, providing deep resistance against timing attacks
1402  * on the padding or underlying cipher.
1403  *
1404  * This only affects CBC ciphersuites, and is useless if none is defined.
1405  *
1406  * Requires: MBEDTLS_SSL_PROTO_TLS1_2
1407  *
1408  * Comment this macro to disable support for Encrypt-then-MAC
1409  */
1410 #define MBEDTLS_SSL_ENCRYPT_THEN_MAC
1411 
1412 /** \def MBEDTLS_SSL_EXTENDED_MASTER_SECRET
1413  *
1414  * Enable support for RFC 7627: Session Hash and Extended Master Secret
1415  * Extension.
1416  *
1417  * This was introduced as "the proper fix" to the Triple Handshake familiy of
1418  * attacks, but it is recommended to always use it (even if you disable
1419  * renegotiation), since it actually fixes a more fundamental issue in the
1420  * original SSL/TLS design, and has implications beyond Triple Handshake.
1421  *
1422  * Requires: MBEDTLS_SSL_PROTO_TLS1_2
1423  *
1424  * Comment this macro to disable support for Extended Master Secret.
1425  */
1426 #define MBEDTLS_SSL_EXTENDED_MASTER_SECRET
1427 
1428 /**
1429  * \def MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
1430  *
1431  * This option controls the availability of the API mbedtls_ssl_get_peer_cert()
1432  * giving access to the peer's certificate after completion of the handshake.
1433  *
1434  * Unless you need mbedtls_ssl_peer_cert() in your application, it is
1435  * recommended to disable this option for reduced RAM usage.
1436  *
1437  * \note If this option is disabled, mbedtls_ssl_get_peer_cert() is still
1438  *       defined, but always returns \c NULL.
1439  *
1440  * \note This option has no influence on the protection against the
1441  *       triple handshake attack. Even if it is disabled, Mbed TLS will
1442  *       still ensure that certificates do not change during renegotiation,
1443  *       for exaple by keeping a hash of the peer's certificate.
1444  *
1445  * Comment this macro to disable storing the peer's certificate
1446  * after the handshake.
1447  */
1448 #define MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
1449 
1450 /**
1451  * \def MBEDTLS_SSL_RENEGOTIATION
1452  *
1453  * Enable support for TLS renegotiation.
1454  *
1455  * The two main uses of renegotiation are (1) refresh keys on long-lived
1456  * connections and (2) client authentication after the initial handshake.
1457  * If you don't need renegotiation, it's probably better to disable it, since
1458  * it has been associated with security issues in the past and is easy to
1459  * misuse/misunderstand.
1460  *
1461  * Comment this to disable support for renegotiation.
1462  *
1463  * \note   Even if this option is disabled, both client and server are aware
1464  *         of the Renegotiation Indication Extension (RFC 5746) used to
1465  *         prevent the SSL renegotiation attack (see RFC 5746 Sect. 1).
1466  *         (See \c mbedtls_ssl_conf_legacy_renegotiation for the
1467  *          configuration of this extension).
1468  *
1469  */
1470 #define MBEDTLS_SSL_RENEGOTIATION
1471 
1472 /**
1473  * \def MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1474  *
1475  * Enable support for RFC 6066 max_fragment_length extension in SSL.
1476  *
1477  * Comment this macro to disable support for the max_fragment_length extension
1478  */
1479 #define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1480 
1481 /**
1482  * \def MBEDTLS_SSL_PROTO_TLS1_2
1483  *
1484  * Enable support for TLS 1.2 (and DTLS 1.2 if DTLS is enabled).
1485  *
1486  * Requires: MBEDTLS_SHA1_C or MBEDTLS_SHA256_C or MBEDTLS_SHA512_C
1487  *           (Depends on ciphersuites)
1488  *
1489  * Comment this macro to disable support for TLS 1.2 / DTLS 1.2
1490  */
1491 #define MBEDTLS_SSL_PROTO_TLS1_2
1492 
1493 /**
1494  * \def MBEDTLS_SSL_PROTO_TLS1_3
1495  *
1496  * Enable support for TLS 1.3.
1497  *
1498  * \note The support for TLS 1.3 is not comprehensive yet, in particular
1499  *       pre-shared keys are not supported.
1500  *       See docs/architecture/tls13-support.md for a description of the TLS
1501  *       1.3 support that this option enables.
1502  *
1503  * Uncomment this macro to enable the support for TLS 1.3.
1504  *
1505  */
1506 //#define MBEDTLS_SSL_PROTO_TLS1_3
1507 
1508 /**
1509  * \def MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
1510  *
1511  * Enable TLS 1.3 middlebox compatibility mode.
1512  *
1513  * As specified in Section D.4 of RFC 8446, TLS 1.3 offers a compatibility
1514  * mode to make a TLS 1.3 connection more likely to pass through middle boxes
1515  * expecting TLS 1.2 traffic.
1516  *
1517  * Turning on the compatibility mode comes at the cost of a few added bytes
1518  * on the wire, but it doesn't affect compatibility with TLS 1.3 implementations
1519  * that don't use it. Therefore, unless transmission bandwidth is critical and
1520  * you know that middlebox compatibility issues won't occur, it is therefore
1521  * recommended to set this option.
1522  *
1523  * Comment to disable compatibility mode for TLS 1.3. If
1524  * MBEDTLS_SSL_PROTO_TLS1_3 is not enabled, this option does not have any
1525  * effect on the build.
1526  *
1527  */
1528 //#define MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
1529 
1530 /**
1531  * \def MBEDTLS_SSL_PROTO_DTLS
1532  *
1533  * Enable support for DTLS (all available versions).
1534  *
1535  * Enable this and MBEDTLS_SSL_PROTO_TLS1_2 to enable DTLS 1.2.
1536  *
1537  * Requires: MBEDTLS_SSL_PROTO_TLS1_2
1538  *
1539  * Comment this macro to disable support for DTLS
1540  */
1541 //#define MBEDTLS_SSL_PROTO_DTLS
1542 
1543 /**
1544  * \def MBEDTLS_SSL_ALPN
1545  *
1546  * Enable support for RFC 7301 Application Layer Protocol Negotiation.
1547  *
1548  * Comment this macro to disable support for ALPN.
1549  */
1550 #define MBEDTLS_SSL_ALPN
1551 
1552 /**
1553  * \def MBEDTLS_SSL_DTLS_ANTI_REPLAY
1554  *
1555  * Enable support for the anti-replay mechanism in DTLS.
1556  *
1557  * Requires: MBEDTLS_SSL_TLS_C
1558  *           MBEDTLS_SSL_PROTO_DTLS
1559  *
1560  * \warning Disabling this is often a security risk!
1561  * See mbedtls_ssl_conf_dtls_anti_replay() for details.
1562  *
1563  * Comment this to disable anti-replay in DTLS.
1564  */
1565 //#define MBEDTLS_SSL_DTLS_ANTI_REPLAY
1566 
1567 /**
1568  * \def MBEDTLS_SSL_DTLS_HELLO_VERIFY
1569  *
1570  * Enable support for HelloVerifyRequest on DTLS servers.
1571  *
1572  * This feature is highly recommended to prevent DTLS servers being used as
1573  * amplifiers in DoS attacks against other hosts. It should always be enabled
1574  * unless you know for sure amplification cannot be a problem in the
1575  * environment in which your server operates.
1576  *
1577  * \warning Disabling this can ba a security risk! (see above)
1578  *
1579  * Requires: MBEDTLS_SSL_PROTO_DTLS
1580  *
1581  * Comment this to disable support for HelloVerifyRequest.
1582  */
1583 //#define MBEDTLS_SSL_DTLS_HELLO_VERIFY
1584 
1585 /**
1586  * \def MBEDTLS_SSL_DTLS_SRTP
1587  *
1588  * Enable support for negotiation of DTLS-SRTP (RFC 5764)
1589  * through the use_srtp extension.
1590  *
1591  * \note This feature provides the minimum functionality required
1592  * to negotiate the use of DTLS-SRTP and to allow the derivation of
1593  * the associated SRTP packet protection key material.
1594  * In particular, the SRTP packet protection itself, as well as the
1595  * demultiplexing of RTP and DTLS packets at the datagram layer
1596  * (see Section 5 of RFC 5764), are not handled by this feature.
1597  * Instead, after successful completion of a handshake negotiating
1598  * the use of DTLS-SRTP, the extended key exporter API
1599  * mbedtls_ssl_conf_export_keys_cb() should be used to implement
1600  * the key exporter described in Section 4.2 of RFC 5764 and RFC 5705
1601  * (this is implemented in the SSL example programs).
1602  * The resulting key should then be passed to an SRTP stack.
1603  *
1604  * Setting this option enables the runtime API
1605  * mbedtls_ssl_conf_dtls_srtp_protection_profiles()
1606  * through which the supported DTLS-SRTP protection
1607  * profiles can be configured. You must call this API at
1608  * runtime if you wish to negotiate the use of DTLS-SRTP.
1609  *
1610  * Requires: MBEDTLS_SSL_PROTO_DTLS
1611  *
1612  * Uncomment this to enable support for use_srtp extension.
1613  */
1614 //#define MBEDTLS_SSL_DTLS_SRTP
1615 
1616 /**
1617  * \def MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
1618  *
1619  * Enable server-side support for clients that reconnect from the same port.
1620  *
1621  * Some clients unexpectedly close the connection and try to reconnect using the
1622  * same source port. This needs special support from the server to handle the
1623  * new connection securely, as described in section 4.2.8 of RFC 6347. This
1624  * flag enables that support.
1625  *
1626  * Requires: MBEDTLS_SSL_DTLS_HELLO_VERIFY
1627  *
1628  * Comment this to disable support for clients reusing the source port.
1629  */
1630 //#define MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
1631 
1632 /**
1633  * \def MBEDTLS_SSL_SESSION_TICKETS
1634  *
1635  * Enable support for RFC 5077 session tickets in SSL.
1636  * Client-side, provides full support for session tickets (maintenance of a
1637  * session store remains the responsibility of the application, though).
1638  * Server-side, you also need to provide callbacks for writing and parsing
1639  * tickets, including authenticated encryption and key management. Example
1640  * callbacks are provided by MBEDTLS_SSL_TICKET_C.
1641  *
1642  * Comment this macro to disable support for SSL session tickets
1643  */
1644 #define MBEDTLS_SSL_SESSION_TICKETS
1645 
1646 /**
1647  * \def MBEDTLS_SSL_SERVER_NAME_INDICATION
1648  *
1649  * Enable support for RFC 6066 server name indication (SNI) in SSL.
1650  *
1651  * Requires: MBEDTLS_X509_CRT_PARSE_C
1652  *
1653  * Comment this macro to disable support for server name indication in SSL
1654  */
1655 #define MBEDTLS_SSL_SERVER_NAME_INDICATION
1656 
1657 /**
1658  * \def MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
1659  *
1660  * When this option is enabled, the SSL buffer will be resized automatically
1661  * based on the negotiated maximum fragment length in each direction.
1662  *
1663  * Requires: MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1664  */
1665 //#define MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
1666 
1667 /**
1668  * \def MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN
1669  *
1670  * Enable testing of the constant-flow nature of some sensitive functions with
1671  * clang's MemorySanitizer. This causes some existing tests to also test
1672  * this non-functional property of the code under test.
1673  *
1674  * This setting requires compiling with clang -fsanitize=memory. The test
1675  * suites can then be run normally.
1676  *
1677  * \warning This macro is only used for extended testing; it is not considered
1678  * part of the library's API, so it may change or disappear at any time.
1679  *
1680  * Uncomment to enable testing of the constant-flow nature of selected code.
1681  */
1682 //#define MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN
1683 
1684 /**
1685  * \def MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND
1686  *
1687  * Enable testing of the constant-flow nature of some sensitive functions with
1688  * valgrind's memcheck tool. This causes some existing tests to also test
1689  * this non-functional property of the code under test.
1690  *
1691  * This setting requires valgrind headers for building, and is only useful for
1692  * testing if the tests suites are run with valgrind's memcheck. This can be
1693  * done for an individual test suite with 'valgrind ./test_suite_xxx', or when
1694  * using CMake, this can be done for all test suites with 'make memcheck'.
1695  *
1696  * \warning This macro is only used for extended testing; it is not considered
1697  * part of the library's API, so it may change or disappear at any time.
1698  *
1699  * Uncomment to enable testing of the constant-flow nature of selected code.
1700  */
1701 //#define MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND
1702 
1703 /**
1704  * \def MBEDTLS_TEST_HOOKS
1705  *
1706  * Enable features for invasive testing such as introspection functions and
1707  * hooks for fault injection. This enables additional unit tests.
1708  *
1709  * Merely enabling this feature should not change the behavior of the product.
1710  * It only adds new code, and new branching points where the default behavior
1711  * is the same as when this feature is disabled.
1712  * However, this feature increases the attack surface: there is an added
1713  * risk of vulnerabilities, and more gadgets that can make exploits easier.
1714  * Therefore this feature must never be enabled in production.
1715  *
1716  * See `docs/architecture/testing/mbed-crypto-invasive-testing.md` for more
1717  * information.
1718  *
1719  * Uncomment to enable invasive tests.
1720  */
1721 //#define MBEDTLS_TEST_HOOKS
1722 
1723 /**
1724  * \def MBEDTLS_THREADING_ALT
1725  *
1726  * Provide your own alternate threading implementation.
1727  *
1728  * Requires: MBEDTLS_THREADING_C
1729  *
1730  * Uncomment this to allow your own alternate threading implementation.
1731  */
1732 //#define MBEDTLS_THREADING_ALT
1733 
1734 /**
1735  * \def MBEDTLS_THREADING_PTHREAD
1736  *
1737  * Enable the pthread wrapper layer for the threading layer.
1738  *
1739  * Requires: MBEDTLS_THREADING_C
1740  *
1741  * Uncomment this to enable pthread mutexes.
1742  */
1743 //#define MBEDTLS_THREADING_PTHREAD
1744 
1745 /**
1746  * \def MBEDTLS_USE_PSA_CRYPTO
1747  *
1748  * Make the X.509 and TLS library use PSA for cryptographic operations, and
1749  * enable new APIs for using keys handled by PSA Crypto.
1750  *
1751  * \note Development of this option is currently in progress, and parts of Mbed
1752  * TLS's X.509 and TLS modules are not ported to PSA yet. However, these parts
1753  * will still continue to work as usual, so enabling this option should not
1754  * break backwards compatibility.
1755  *
1756  * \note See docs/use-psa-crypto.md for a complete description of what this
1757  * option currently does, and of parts that are not affected by it so far.
1758  *
1759  * \warning This option enables new Mbed TLS APIs which are currently
1760  * considered experimental and may change in incompatible ways at any time.
1761  * That is, the APIs enabled by this option are not covered by the usual
1762  * promises of API stability.
1763  *
1764  * Requires: MBEDTLS_PSA_CRYPTO_C.
1765  *
1766  * Uncomment this to enable internal use of PSA Crypto and new associated APIs.
1767  */
1768 //#define MBEDTLS_USE_PSA_CRYPTO
1769 
1770 /**
1771  * \def MBEDTLS_PSA_CRYPTO_CONFIG
1772  *
1773  * This setting allows support for cryptographic mechanisms through the PSA
1774  * API to be configured separately from support through the mbedtls API.
1775  *
1776  * Uncomment this to enable use of PSA Crypto configuration settings which
1777  * can be found in include/psa/crypto_config.h.
1778  *
1779  * This feature is still experimental and is not ready for production since
1780  * it is not completed.
1781  */
1782 //#define MBEDTLS_PSA_CRYPTO_CONFIG
1783 
1784 /**
1785  * \def MBEDTLS_VERSION_FEATURES
1786  *
1787  * Allow run-time checking of compile-time enabled features. Thus allowing users
1788  * to check at run-time if the library is for instance compiled with threading
1789  * support via mbedtls_version_check_feature().
1790  *
1791  * Requires: MBEDTLS_VERSION_C
1792  *
1793  * Comment this to disable run-time checking and save ROM space
1794  */
1795 //#define MBEDTLS_VERSION_FEATURES
1796 
1797 /**
1798  * \def MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK
1799  *
1800  * If set, this enables the X.509 API `mbedtls_x509_crt_verify_with_ca_cb()`
1801  * and the SSL API `mbedtls_ssl_conf_ca_cb()` which allow users to configure
1802  * the set of trusted certificates through a callback instead of a linked
1803  * list.
1804  *
1805  * This is useful for example in environments where a large number of trusted
1806  * certificates is present and storing them in a linked list isn't efficient
1807  * enough, or when the set of trusted certificates changes frequently.
1808  *
1809  * See the documentation of `mbedtls_x509_crt_verify_with_ca_cb()` and
1810  * `mbedtls_ssl_conf_ca_cb()` for more information.
1811  *
1812  * Uncomment to enable trusted certificate callbacks.
1813  */
1814 //#define MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK
1815 
1816 /**
1817  * \def MBEDTLS_X509_REMOVE_INFO
1818  *
1819  * Disable mbedtls_x509_*_info() and related APIs.
1820  *
1821  * Uncomment to omit mbedtls_x509_*_info(), as well as mbedtls_debug_print_crt()
1822  * and other functions/constants only used by these functions, thus reducing
1823  * the code footprint by several KB.
1824  */
1825 //#define MBEDTLS_X509_REMOVE_INFO
1826 
1827 /**
1828  * \def MBEDTLS_X509_RSASSA_PSS_SUPPORT
1829  *
1830  * Enable parsing and verification of X.509 certificates, CRLs and CSRS
1831  * signed with RSASSA-PSS (aka PKCS#1 v2.1).
1832  *
1833  * Comment this macro to disallow using RSASSA-PSS in certificates.
1834  */
1835 //#define MBEDTLS_X509_RSASSA_PSS_SUPPORT
1836 /* \} name SECTION: mbed TLS feature support */
1837 
1838 /**
1839  * \name SECTION: mbed TLS modules
1840  *
1841  * This section enables or disables entire modules in mbed TLS
1842  * \{
1843  */
1844 
1845 /**
1846  * \def MBEDTLS_AESNI_C
1847  *
1848  * Enable AES-NI support on x86-64.
1849  *
1850  * Module:  library/aesni.c
1851  * Caller:  library/aes.c
1852  *
1853  * Requires: MBEDTLS_HAVE_ASM
1854  *
1855  * This modules adds support for the AES-NI instructions on x86-64
1856  */
1857 //#define MBEDTLS_AESNI_C
1858 
1859 /**
1860  * \def MBEDTLS_AES_C
1861  *
1862  * Enable the AES block cipher.
1863  *
1864  * Module:  library/aes.c
1865  * Caller:  library/cipher.c
1866  *          library/pem.c
1867  *          library/ctr_drbg.c
1868  *
1869  * This module enables the following ciphersuites (if other requisites are
1870  * enabled as well):
1871  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
1872  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
1873  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
1874  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
1875  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
1876  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
1877  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
1878  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
1879  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
1880  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
1881  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
1882  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
1883  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
1884  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
1885  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
1886  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
1887  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
1888  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
1889  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
1890  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
1891  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
1892  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
1893  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
1894  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
1895  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
1896  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
1897  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
1898  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
1899  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
1900  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
1901  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
1902  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384
1903  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
1904  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA
1905  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA
1906  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
1907  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256
1908  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
1909  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA
1910  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA
1911  *      MBEDTLS_TLS_RSA_WITH_AES_256_GCM_SHA384
1912  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA256
1913  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA
1914  *      MBEDTLS_TLS_RSA_WITH_AES_128_GCM_SHA256
1915  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA256
1916  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA
1917  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384
1918  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384
1919  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA
1920  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256
1921  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256
1922  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA
1923  *      MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384
1924  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384
1925  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA
1926  *      MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256
1927  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256
1928  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA
1929  *
1930  * PEM_PARSE uses AES for decrypting encrypted keys.
1931  */
1932 #define MBEDTLS_AES_C
1933 
1934 /**
1935  * \def MBEDTLS_ASN1_PARSE_C
1936  *
1937  * Enable the generic ASN1 parser.
1938  *
1939  * Module:  library/asn1.c
1940  * Caller:  library/x509.c
1941  *          library/dhm.c
1942  *          library/pkcs12.c
1943  *          library/pkcs5.c
1944  *          library/pkparse.c
1945  */
1946 #define MBEDTLS_ASN1_PARSE_C
1947 
1948 /**
1949  * \def MBEDTLS_ASN1_WRITE_C
1950  *
1951  * Enable the generic ASN1 writer.
1952  *
1953  * Module:  library/asn1write.c
1954  * Caller:  library/ecdsa.c
1955  *          library/pkwrite.c
1956  *          library/x509_create.c
1957  *          library/x509write_crt.c
1958  *          library/x509write_csr.c
1959  */
1960 #define MBEDTLS_ASN1_WRITE_C
1961 
1962 /**
1963  * \def MBEDTLS_BASE64_C
1964  *
1965  * Enable the Base64 module.
1966  *
1967  * Module:  library/base64.c
1968  * Caller:  library/pem.c
1969  *
1970  * This module is required for PEM support (required by X.509).
1971  */
1972 #define MBEDTLS_BASE64_C
1973 
1974 /**
1975  * \def MBEDTLS_BIGNUM_C
1976  *
1977  * Enable the multi-precision integer library.
1978  *
1979  * Module:  library/bignum.c
1980  * Caller:  library/dhm.c
1981  *          library/ecp.c
1982  *          library/ecdsa.c
1983  *          library/rsa.c
1984  *          library/rsa_alt_helpers.c
1985  *          library/ssl_tls.c
1986  *
1987  * This module is required for RSA, DHM and ECC (ECDH, ECDSA) support.
1988  */
1989 #define MBEDTLS_BIGNUM_C
1990 
1991 /**
1992  * \def MBEDTLS_CAMELLIA_C
1993  *
1994  * Enable the Camellia block cipher.
1995  *
1996  * Module:  library/camellia.c
1997  * Caller:  library/cipher.c
1998  *
1999  * This module enables the following ciphersuites (if other requisites are
2000  * enabled as well):
2001  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
2002  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
2003  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256
2004  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384
2005  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
2006  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
2007  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256
2008  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384
2009  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
2010  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
2011  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
2012  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
2013  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
2014  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
2015  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
2016  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
2017  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
2018  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
2019  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
2020  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
2021  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
2022  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
2023  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384
2024  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
2025  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
2026  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256
2027  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
2028  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
2029  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384
2030  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
2031  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
2032  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256
2033  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
2034  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
2035  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384
2036  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384
2037  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256
2038  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256
2039  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384
2040  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384
2041  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256
2042  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256
2043  */
2044 //#define MBEDTLS_CAMELLIA_C
2045 
2046 /**
2047  * \def MBEDTLS_ARIA_C
2048  *
2049  * Enable the ARIA block cipher.
2050  *
2051  * Module:  library/aria.c
2052  * Caller:  library/cipher.c
2053  *
2054  * This module enables the following ciphersuites (if other requisites are
2055  * enabled as well):
2056  *
2057  *      MBEDTLS_TLS_RSA_WITH_ARIA_128_CBC_SHA256
2058  *      MBEDTLS_TLS_RSA_WITH_ARIA_256_CBC_SHA384
2059  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256
2060  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384
2061  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256
2062  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384
2063  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_CBC_SHA256
2064  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_CBC_SHA384
2065  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256
2066  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384
2067  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_CBC_SHA256
2068  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_CBC_SHA384
2069  *      MBEDTLS_TLS_RSA_WITH_ARIA_128_GCM_SHA256
2070  *      MBEDTLS_TLS_RSA_WITH_ARIA_256_GCM_SHA384
2071  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256
2072  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384
2073  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256
2074  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384
2075  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_GCM_SHA256
2076  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_GCM_SHA384
2077  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256
2078  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384
2079  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_GCM_SHA256
2080  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_GCM_SHA384
2081  *      MBEDTLS_TLS_PSK_WITH_ARIA_128_CBC_SHA256
2082  *      MBEDTLS_TLS_PSK_WITH_ARIA_256_CBC_SHA384
2083  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_CBC_SHA256
2084  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_CBC_SHA384
2085  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_CBC_SHA256
2086  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_CBC_SHA384
2087  *      MBEDTLS_TLS_PSK_WITH_ARIA_128_GCM_SHA256
2088  *      MBEDTLS_TLS_PSK_WITH_ARIA_256_GCM_SHA384
2089  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_GCM_SHA256
2090  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_GCM_SHA384
2091  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_GCM_SHA256
2092  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_GCM_SHA384
2093  *      MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256
2094  *      MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384
2095  */
2096 #define MBEDTLS_ARIA_C
2097 
2098 /**
2099  * \def MBEDTLS_CCM_C
2100  *
2101  * Enable the Counter with CBC-MAC (CCM) mode for 128-bit block cipher.
2102  *
2103  * Module:  library/ccm.c
2104  *
2105  * Requires: MBEDTLS_AES_C or MBEDTLS_CAMELLIA_C
2106  *
2107  * This module enables the AES-CCM ciphersuites, if other requisites are
2108  * enabled as well.
2109  */
2110 //#define MBEDTLS_CCM_C
2111 
2112 /**
2113  * \def MBEDTLS_CHACHA20_C
2114  *
2115  * Enable the ChaCha20 stream cipher.
2116  *
2117  * Module:  library/chacha20.c
2118  */
2119 #define MBEDTLS_CHACHA20_C
2120 
2121 /**
2122  * \def MBEDTLS_CHACHAPOLY_C
2123  *
2124  * Enable the ChaCha20-Poly1305 AEAD algorithm.
2125  *
2126  * Module:  library/chachapoly.c
2127  *
2128  * This module requires: MBEDTLS_CHACHA20_C, MBEDTLS_POLY1305_C
2129  */
2130 #define MBEDTLS_CHACHAPOLY_C
2131 
2132 /**
2133  * \def MBEDTLS_CIPHER_C
2134  *
2135  * Enable the generic cipher layer.
2136  *
2137  * Module:  library/cipher.c
2138  * Caller:  library/ssl_tls.c
2139  *
2140  * Uncomment to enable generic cipher wrappers.
2141  */
2142 #define MBEDTLS_CIPHER_C
2143 
2144 /**
2145  * \def MBEDTLS_CMAC_C
2146  *
2147  * Enable the CMAC (Cipher-based Message Authentication Code) mode for block
2148  * ciphers.
2149  *
2150  * \note When #MBEDTLS_CMAC_ALT is active, meaning that the underlying
2151  *       implementation of the CMAC algorithm is provided by an alternate
2152  *       implementation, that alternate implementation may opt to not support
2153  *       AES-192 or 3DES as underlying block ciphers for the CMAC operation.
2154  *
2155  * Module:  library/cmac.c
2156  *
2157  * Requires: MBEDTLS_AES_C or MBEDTLS_DES_C
2158  *
2159  */
2160 #define MBEDTLS_CMAC_C
2161 
2162 /**
2163  * \def MBEDTLS_CTR_DRBG_C
2164  *
2165  * Enable the CTR_DRBG AES-based random generator.
2166  * The CTR_DRBG generator uses AES-256 by default.
2167  * To use AES-128 instead, enable \c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY above.
2168  *
2169  * \note To achieve a 256-bit security strength with CTR_DRBG,
2170  *       you must use AES-256 *and* use sufficient entropy.
2171  *       See ctr_drbg.h for more details.
2172  *
2173  * Module:  library/ctr_drbg.c
2174  * Caller:
2175  *
2176  * Requires: MBEDTLS_AES_C
2177  *
2178  * This module provides the CTR_DRBG AES random number generator.
2179  */
2180 #define MBEDTLS_CTR_DRBG_C
2181 
2182 /**
2183  * \def MBEDTLS_DEBUG_C
2184  *
2185  * Enable the debug functions.
2186  *
2187  * Module:  library/debug.c
2188  * Caller:  library/ssl_cli.c
2189  *          library/ssl_srv.c
2190  *          library/ssl_tls.c
2191  *
2192  * This module provides debugging functions.
2193  */
2194 //#define MBEDTLS_DEBUG_C
2195 
2196 /**
2197  * \def MBEDTLS_DES_C
2198  *
2199  * Enable the DES block cipher.
2200  *
2201  * Module:  library/des.c
2202  * Caller:  library/pem.c
2203  *          library/cipher.c
2204  *
2205  * PEM_PARSE uses DES/3DES for decrypting encrypted keys.
2206  *
2207  * \warning   DES is considered a weak cipher and its use constitutes a
2208  *            security risk. We recommend considering stronger ciphers instead.
2209  */
2210 #define MBEDTLS_DES_C
2211 
2212 /**
2213  * \def MBEDTLS_DHM_C
2214  *
2215  * Enable the Diffie-Hellman-Merkle module.
2216  *
2217  * Module:  library/dhm.c
2218  * Caller:  library/ssl_cli.c
2219  *          library/ssl_srv.c
2220  *
2221  * This module is used by the following key exchanges:
2222  *      DHE-RSA, DHE-PSK
2223  *
2224  * \warning    Using DHE constitutes a security risk as it
2225  *             is not possible to validate custom DH parameters.
2226  *             If possible, it is recommended users should consider
2227  *             preferring other methods of key exchange.
2228  *             See dhm.h for more details.
2229  *
2230  */
2231 //#define MBEDTLS_DHM_C
2232 
2233 /**
2234  * \def MBEDTLS_ECDH_C
2235  *
2236  * Enable the elliptic curve Diffie-Hellman library.
2237  *
2238  * Module:  library/ecdh.c
2239  * Caller:  library/ssl_cli.c
2240  *          library/ssl_srv.c
2241  *
2242  * This module is used by the following key exchanges:
2243  *      ECDHE-ECDSA, ECDHE-RSA, DHE-PSK
2244  *
2245  * Requires: MBEDTLS_ECP_C
2246  */
2247 #define MBEDTLS_ECDH_C
2248 
2249 /**
2250  * \def MBEDTLS_ECDSA_C
2251  *
2252  * Enable the elliptic curve DSA library.
2253  *
2254  * Module:  library/ecdsa.c
2255  * Caller:
2256  *
2257  * This module is used by the following key exchanges:
2258  *      ECDHE-ECDSA
2259  *
2260  * Requires: MBEDTLS_ECP_C, MBEDTLS_ASN1_WRITE_C, MBEDTLS_ASN1_PARSE_C,
2261  *           and at least one MBEDTLS_ECP_DP_XXX_ENABLED for a
2262  *           short Weierstrass curve.
2263  */
2264 #define MBEDTLS_ECDSA_C
2265 
2266 /**
2267  * \def MBEDTLS_ECJPAKE_C
2268  *
2269  * Enable the elliptic curve J-PAKE library.
2270  *
2271  * \note EC J-PAKE support is based on the Thread v1.0.0 specification.
2272  *       It has not been reviewed for compliance with newer standards such as
2273  *       Thread v1.1 or RFC 8236.
2274  *
2275  * Module:  library/ecjpake.c
2276  * Caller:
2277  *
2278  * This module is used by the following key exchanges:
2279  *      ECJPAKE
2280  *
2281  * Requires: MBEDTLS_ECP_C, MBEDTLS_MD_C
2282  */
2283 #define MBEDTLS_ECJPAKE_C
2284 
2285 /**
2286  * \def MBEDTLS_ECP_C
2287  *
2288  * Enable the elliptic curve over GF(p) library.
2289  *
2290  * Module:  library/ecp.c
2291  * Caller:  library/ecdh.c
2292  *          library/ecdsa.c
2293  *          library/ecjpake.c
2294  *
2295  * Requires: MBEDTLS_BIGNUM_C and at least one MBEDTLS_ECP_DP_XXX_ENABLED
2296  */
2297 #define MBEDTLS_ECP_C
2298 
2299 /**
2300  * \def MBEDTLS_ENTROPY_C
2301  *
2302  * Enable the platform-specific entropy code.
2303  *
2304  * Module:  library/entropy.c
2305  * Caller:
2306  *
2307  * Requires: MBEDTLS_SHA512_C or MBEDTLS_SHA256_C
2308  *
2309  * This module provides a generic entropy pool
2310  */
2311 #define MBEDTLS_ENTROPY_C
2312 
2313 /**
2314  * \def MBEDTLS_ERROR_C
2315  *
2316  * Enable error code to error string conversion.
2317  *
2318  * Module:  library/error.c
2319  * Caller:
2320  *
2321  * This module enables mbedtls_strerror().
2322  */
2323 //#define MBEDTLS_ERROR_C
2324 
2325 /**
2326  * \def MBEDTLS_GCM_C
2327  *
2328  * Enable the Galois/Counter Mode (GCM).
2329  *
2330  * Module:  library/gcm.c
2331  *
2332  * Requires: MBEDTLS_AES_C or MBEDTLS_CAMELLIA_C or MBEDTLS_ARIA_C
2333  *
2334  * This module enables the AES-GCM and CAMELLIA-GCM ciphersuites, if other
2335  * requisites are enabled as well.
2336  */
2337 #define MBEDTLS_GCM_C
2338 
2339 /**
2340  * \def MBEDTLS_HKDF_C
2341  *
2342  * Enable the HKDF algorithm (RFC 5869).
2343  *
2344  * Module:  library/hkdf.c
2345  * Caller:
2346  *
2347  * Requires: MBEDTLS_MD_C
2348  *
2349  * This module adds support for the Hashed Message Authentication Code
2350  * (HMAC)-based key derivation function (HKDF).
2351  */
2352 #define MBEDTLS_HKDF_C
2353 
2354 /**
2355  * \def MBEDTLS_HMAC_DRBG_C
2356  *
2357  * Enable the HMAC_DRBG random generator.
2358  *
2359  * Module:  library/hmac_drbg.c
2360  * Caller:
2361  *
2362  * Requires: MBEDTLS_MD_C
2363  *
2364  * Uncomment to enable the HMAC_DRBG random number geerator.
2365  */
2366 //#define MBEDTLS_HMAC_DRBG_C
2367 
2368 /**
2369  * \def MBEDTLS_NIST_KW_C
2370  *
2371  * Enable the Key Wrapping mode for 128-bit block ciphers,
2372  * as defined in NIST SP 800-38F. Only KW and KWP modes
2373  * are supported. At the moment, only AES is approved by NIST.
2374  *
2375  * Module:  library/nist_kw.c
2376  *
2377  * Requires: MBEDTLS_AES_C and MBEDTLS_CIPHER_C
2378  */
2379 #define MBEDTLS_NIST_KW_C
2380 
2381 /**
2382  * \def MBEDTLS_MD_C
2383  *
2384  * Enable the generic message digest layer.
2385  *
2386  * Module:  library/md.c
2387  * Caller:
2388  *
2389  * Uncomment to enable generic message digest wrappers.
2390  */
2391 #define MBEDTLS_MD_C
2392 
2393 /**
2394  * \def MBEDTLS_MD5_C
2395  *
2396  * Enable the MD5 hash algorithm.
2397  *
2398  * Module:  library/md5.c
2399  * Caller:  library/md.c
2400  *          library/pem.c
2401  *          library/ssl_tls.c
2402  *
2403  * This module is required for TLS 1.2 depending on the handshake parameters.
2404  * Further, it is used for checking MD5-signed certificates, and for PBKDF1
2405  * when decrypting PEM-encoded encrypted keys.
2406  *
2407  * \warning   MD5 is considered a weak message digest and its use constitutes a
2408  *            security risk. If possible, we recommend avoiding dependencies on
2409  *            it, and considering stronger message digests instead.
2410  *
2411  */
2412 #define MBEDTLS_MD5_C
2413 
2414 /**
2415  * \def MBEDTLS_MEMORY_BUFFER_ALLOC_C
2416  *
2417  * Enable the buffer allocator implementation that makes use of a (stack)
2418  * based buffer to 'allocate' dynamic memory. (replaces calloc() and free()
2419  * calls)
2420  *
2421  * Module:  library/memory_buffer_alloc.c
2422  *
2423  * Requires: MBEDTLS_PLATFORM_C
2424  *           MBEDTLS_PLATFORM_MEMORY (to use it within mbed TLS)
2425  *
2426  * Enable this module to enable the buffer memory allocator.
2427  */
2428 #ifdef HILINK_E2E_SECURITY_CONFIG
2429 #define MBEDTLS_MEMORY_BUFFER_ALLOC_C
2430 #endif
2431 
2432 /**
2433  * \def MBEDTLS_NET_C
2434  *
2435  * Enable the TCP and UDP over IPv6/IPv4 networking routines.
2436  *
2437  * \note This module only works on POSIX/Unix (including Linux, BSD and OS X)
2438  * and Windows. For other platforms, you'll want to disable it, and write your
2439  * own networking callbacks to be passed to \c mbedtls_ssl_set_bio().
2440  *
2441  * \note See also our Knowledge Base article about porting to a new
2442  * environment:
2443  * https://tls.mbed.org/kb/how-to/how-do-i-port-mbed-tls-to-a-new-environment-OS
2444  *
2445  * Module:  library/net_sockets.c
2446  *
2447  * This module provides networking routines.
2448  */
2449 #define MBEDTLS_NET_C
2450 
2451 /**
2452  * \def MBEDTLS_OID_C
2453  *
2454  * Enable the OID database.
2455  *
2456  * Module:  library/oid.c
2457  * Caller:  library/asn1write.c
2458  *          library/pkcs5.c
2459  *          library/pkparse.c
2460  *          library/pkwrite.c
2461  *          library/rsa.c
2462  *          library/x509.c
2463  *          library/x509_create.c
2464  *          library/x509_crl.c
2465  *          library/x509_crt.c
2466  *          library/x509_csr.c
2467  *          library/x509write_crt.c
2468  *          library/x509write_csr.c
2469  *
2470  * This modules translates between OIDs and internal values.
2471  */
2472 #define MBEDTLS_OID_C
2473 
2474 /**
2475  * \def MBEDTLS_PADLOCK_C
2476  *
2477  * Enable VIA Padlock support on x86.
2478  *
2479  * Module:  library/padlock.c
2480  * Caller:  library/aes.c
2481  *
2482  * Requires: MBEDTLS_HAVE_ASM
2483  *
2484  * This modules adds support for the VIA PadLock on x86.
2485  */
2486 #define MBEDTLS_PADLOCK_C
2487 
2488 /**
2489  * \def MBEDTLS_PEM_PARSE_C
2490  *
2491  * Enable PEM decoding / parsing.
2492  *
2493  * Module:  library/pem.c
2494  * Caller:  library/dhm.c
2495  *          library/pkparse.c
2496  *          library/x509_crl.c
2497  *          library/x509_crt.c
2498  *          library/x509_csr.c
2499  *
2500  * Requires: MBEDTLS_BASE64_C
2501  *
2502  * This modules adds support for decoding / parsing PEM files.
2503  */
2504 #define MBEDTLS_PEM_PARSE_C
2505 
2506 /**
2507  * \def MBEDTLS_PEM_WRITE_C
2508  *
2509  * Enable PEM encoding / writing.
2510  *
2511  * Module:  library/pem.c
2512  * Caller:  library/pkwrite.c
2513  *          library/x509write_crt.c
2514  *          library/x509write_csr.c
2515  *
2516  * Requires: MBEDTLS_BASE64_C
2517  *
2518  * This modules adds support for encoding / writing PEM files.
2519  */
2520 #define MBEDTLS_PEM_WRITE_C
2521 
2522 /**
2523  * \def MBEDTLS_PK_C
2524  *
2525  * Enable the generic public (asymetric) key layer.
2526  *
2527  * Module:  library/pk.c
2528  * Caller:  library/ssl_tls.c
2529  *          library/ssl_cli.c
2530  *          library/ssl_srv.c
2531  *
2532  * Requires: MBEDTLS_RSA_C or MBEDTLS_ECP_C
2533  *
2534  * Uncomment to enable generic public key wrappers.
2535  */
2536 #define MBEDTLS_PK_C
2537 
2538 /**
2539  * \def MBEDTLS_PK_PARSE_C
2540  *
2541  * Enable the generic public (asymetric) key parser.
2542  *
2543  * Module:  library/pkparse.c
2544  * Caller:  library/x509_crt.c
2545  *          library/x509_csr.c
2546  *
2547  * Requires: MBEDTLS_PK_C
2548  *
2549  * Uncomment to enable generic public key parse functions.
2550  */
2551 #define MBEDTLS_PK_PARSE_C
2552 
2553 /**
2554  * \def MBEDTLS_PK_WRITE_C
2555  *
2556  * Enable the generic public (asymetric) key writer.
2557  *
2558  * Module:  library/pkwrite.c
2559  * Caller:  library/x509write.c
2560  *
2561  * Requires: MBEDTLS_PK_C
2562  *
2563  * Uncomment to enable generic public key write functions.
2564  */
2565 #define MBEDTLS_PK_WRITE_C
2566 
2567 /**
2568  * \def MBEDTLS_PKCS5_C
2569  *
2570  * Enable PKCS#5 functions.
2571  *
2572  * Module:  library/pkcs5.c
2573  *
2574  * Requires: MBEDTLS_MD_C
2575  *
2576  * This module adds support for the PKCS#5 functions.
2577  */
2578 #define MBEDTLS_PKCS5_C
2579 
2580 /**
2581  * \def MBEDTLS_PKCS12_C
2582  *
2583  * Enable PKCS#12 PBE functions.
2584  * Adds algorithms for parsing PKCS#8 encrypted private keys
2585  *
2586  * Module:  library/pkcs12.c
2587  * Caller:  library/pkparse.c
2588  *
2589  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_CIPHER_C, MBEDTLS_MD_C
2590  *
2591  * This module enables PKCS#12 functions.
2592  */
2593 //#define MBEDTLS_PKCS12_C
2594 
2595 /**
2596  * \def MBEDTLS_PLATFORM_C
2597  *
2598  * Enable the platform abstraction layer that allows you to re-assign
2599  * functions like calloc(), free(), snprintf(), printf(), fprintf(), exit().
2600  *
2601  * Enabling MBEDTLS_PLATFORM_C enables to use of MBEDTLS_PLATFORM_XXX_ALT
2602  * or MBEDTLS_PLATFORM_XXX_MACRO directives, allowing the functions mentioned
2603  * above to be specified at runtime or compile time respectively.
2604  *
2605  * \note This abstraction layer must be enabled on Windows (including MSYS2)
2606  * as other module rely on it for a fixed snprintf implementation.
2607  *
2608  * Module:  library/platform.c
2609  * Caller:  Most other .c files
2610  *
2611  * This module enables abstraction of common (libc) functions.
2612  */
2613 #define MBEDTLS_PLATFORM_C
2614 
2615 /**
2616  * \def MBEDTLS_POLY1305_C
2617  *
2618  * Enable the Poly1305 MAC algorithm.
2619  *
2620  * Module:  library/poly1305.c
2621  * Caller:  library/chachapoly.c
2622  */
2623 #define MBEDTLS_POLY1305_C
2624 
2625 /**
2626  * \def MBEDTLS_PSA_CRYPTO_C
2627  *
2628  * Enable the Platform Security Architecture cryptography API.
2629  *
2630  * Module:  library/psa_crypto.c
2631  *
2632  * Requires: either MBEDTLS_CTR_DRBG_C and MBEDTLS_ENTROPY_C,
2633  *           or MBEDTLS_HMAC_DRBG_C and MBEDTLS_ENTROPY_C,
2634  *           or MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG.
2635  *
2636  */
2637 #define MBEDTLS_PSA_CRYPTO_C
2638 
2639 /**
2640  * \def MBEDTLS_PSA_CRYPTO_SE_C
2641  *
2642  * Enable secure element support in the Platform Security Architecture
2643  * cryptography API.
2644  *
2645  * \warning This feature is not yet suitable for production. It is provided
2646  *          for API evaluation and testing purposes only.
2647  *
2648  * Module:  library/psa_crypto_se.c
2649  *
2650  * Requires: MBEDTLS_PSA_CRYPTO_C, MBEDTLS_PSA_CRYPTO_STORAGE_C
2651  *
2652  */
2653 //#define MBEDTLS_PSA_CRYPTO_SE_C
2654 
2655 /**
2656  * \def MBEDTLS_PSA_CRYPTO_STORAGE_C
2657  *
2658  * Enable the Platform Security Architecture persistent key storage.
2659  *
2660  * Module:  library/psa_crypto_storage.c
2661  *
2662  * Requires: MBEDTLS_PSA_CRYPTO_C,
2663  *           either MBEDTLS_PSA_ITS_FILE_C or a native implementation of
2664  *           the PSA ITS interface
2665  */
2666 #define MBEDTLS_PSA_CRYPTO_STORAGE_C
2667 
2668 /**
2669  * \def MBEDTLS_PSA_ITS_FILE_C
2670  *
2671  * Enable the emulation of the Platform Security Architecture
2672  * Internal Trusted Storage (PSA ITS) over files.
2673  *
2674  * Module:  library/psa_its_file.c
2675  *
2676  * Requires: MBEDTLS_FS_IO
2677  */
2678 #define MBEDTLS_PSA_ITS_FILE_C
2679 
2680 /**
2681  * \def MBEDTLS_RIPEMD160_C
2682  *
2683  * Enable the RIPEMD-160 hash algorithm.
2684  *
2685  * Module:  library/ripemd160.c
2686  * Caller:  library/md.c
2687  *
2688  */
2689 //#define MBEDTLS_RIPEMD160_C
2690 
2691 /**
2692  * \def MBEDTLS_RSA_C
2693  *
2694  * Enable the RSA public-key cryptosystem.
2695  *
2696  * Module:  library/rsa.c
2697  *          library/rsa_alt_helpers.c
2698  * Caller:  library/ssl_cli.c
2699  *          library/ssl_srv.c
2700  *          library/ssl_tls.c
2701  *          library/x509.c
2702  *
2703  * This module is used by the following key exchanges:
2704  *      RSA, DHE-RSA, ECDHE-RSA, RSA-PSK
2705  *
2706  * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C
2707  */
2708 #define MBEDTLS_RSA_C
2709 
2710 /**
2711  * \def MBEDTLS_SHA1_C
2712  *
2713  * Enable the SHA1 cryptographic hash algorithm.
2714  *
2715  * Module:  library/sha1.c
2716  * Caller:  library/md.c
2717  *          library/ssl_cli.c
2718  *          library/ssl_srv.c
2719  *          library/ssl_tls.c
2720  *          library/x509write_crt.c
2721  *
2722  * This module is required for TLS 1.2 depending on the handshake parameters,
2723  * and for SHA1-signed certificates.
2724  *
2725  * \warning   SHA-1 is considered a weak message digest and its use constitutes
2726  *            a security risk. If possible, we recommend avoiding dependencies
2727  *            on it, and considering stronger message digests instead.
2728  *
2729  */
2730 #define MBEDTLS_SHA1_C
2731 
2732 /**
2733  * \def MBEDTLS_SHA224_C
2734  *
2735  * Enable the SHA-224 cryptographic hash algorithm.
2736  *
2737  * Requires: MBEDTLS_SHA256_C. The library does not currently support enabling
2738  *           SHA-224 without SHA-256.
2739  *
2740  * Module:  library/sha256.c
2741  * Caller:  library/md.c
2742  *          library/ssl_cookie.c
2743  *
2744  * This module adds support for SHA-224.
2745  */
2746 #define MBEDTLS_SHA224_C
2747 
2748 /**
2749  * \def MBEDTLS_SHA256_C
2750  *
2751  * Enable the SHA-256 cryptographic hash algorithm.
2752  *
2753  * Requires: MBEDTLS_SHA224_C. The library does not currently support enabling
2754  *           SHA-256 without SHA-224.
2755  *
2756  * Module:  library/sha256.c
2757  * Caller:  library/entropy.c
2758  *          library/md.c
2759  *          library/ssl_cli.c
2760  *          library/ssl_srv.c
2761  *          library/ssl_tls.c
2762  *
2763  * This module adds support for SHA-256.
2764  * This module is required for the SSL/TLS 1.2 PRF function.
2765  */
2766 #define MBEDTLS_SHA256_C
2767 
2768 /**
2769  * \def MBEDTLS_SHA384_C
2770  *
2771  * Enable the SHA-384 cryptographic hash algorithm.
2772  *
2773  * Requires: MBEDTLS_SHA512_C
2774  *
2775  * Module:  library/sha512.c
2776  * Caller:  library/md.c
2777  *          library/ssl_cli.c
2778  *          library/ssl_srv.c
2779  *
2780  * Comment to disable SHA-384
2781  */
2782 #define MBEDTLS_SHA384_C
2783 
2784 /**
2785  * \def MBEDTLS_SHA512_C
2786  *
2787  * Enable SHA-512 cryptographic hash algorithms.
2788  *
2789  * Module:  library/sha512.c
2790  * Caller:  library/entropy.c
2791  *          library/md.c
2792  *          library/ssl_tls.c
2793  *          library/ssl_cookie.c
2794  *
2795  * This module adds support for SHA-512.
2796  */
2797 #define MBEDTLS_SHA512_C
2798 
2799 /**
2800  * \def MBEDTLS_SSL_CACHE_C
2801  *
2802  * Enable simple SSL cache implementation.
2803  *
2804  * Module:  library/ssl_cache.c
2805  * Caller:
2806  *
2807  * Requires: MBEDTLS_SSL_CACHE_C
2808  */
2809 #define MBEDTLS_SSL_CACHE_C
2810 
2811 /**
2812  * \def MBEDTLS_SSL_COOKIE_C
2813  *
2814  * Enable basic implementation of DTLS cookies for hello verification.
2815  *
2816  * Module:  library/ssl_cookie.c
2817  * Caller:
2818  */
2819 #define MBEDTLS_SSL_COOKIE_C
2820 
2821 /**
2822  * \def MBEDTLS_SSL_TICKET_C
2823  *
2824  * Enable an implementation of TLS server-side callbacks for session tickets.
2825  *
2826  * Module:  library/ssl_ticket.c
2827  * Caller:
2828  *
2829  * Requires: MBEDTLS_CIPHER_C
2830  */
2831 #define MBEDTLS_SSL_TICKET_C
2832 
2833 /**
2834  * \def MBEDTLS_SSL_CLI_C
2835  *
2836  * Enable the SSL/TLS client code.
2837  *
2838  * Module:  library/ssl_cli.c
2839  * Caller:
2840  *
2841  * Requires: MBEDTLS_SSL_TLS_C
2842  *
2843  * This module is required for SSL/TLS client support.
2844  */
2845 #define MBEDTLS_SSL_CLI_C
2846 
2847 /**
2848  * \def MBEDTLS_SSL_SRV_C
2849  *
2850  * Enable the SSL/TLS server code.
2851  *
2852  * Module:  library/ssl_srv.c
2853  * Caller:
2854  *
2855  * Requires: MBEDTLS_SSL_TLS_C
2856  *
2857  * This module is required for SSL/TLS server support.
2858  */
2859 //#define MBEDTLS_SSL_SRV_C
2860 
2861 /**
2862  * \def MBEDTLS_SSL_TLS_C
2863  *
2864  * Enable the generic SSL/TLS code.
2865  *
2866  * Module:  library/ssl_tls.c
2867  * Caller:  library/ssl_cli.c
2868  *          library/ssl_srv.c
2869  *
2870  * Requires: MBEDTLS_CIPHER_C, MBEDTLS_MD_C
2871  *           and at least one of the MBEDTLS_SSL_PROTO_XXX defines
2872  *
2873  * This module is required for SSL/TLS.
2874  */
2875 #define MBEDTLS_SSL_TLS_C
2876 
2877 /**
2878  * \def MBEDTLS_THREADING_C
2879  *
2880  * Enable the threading abstraction layer.
2881  * By default mbed TLS assumes it is used in a non-threaded environment or that
2882  * contexts are not shared between threads. If you do intend to use contexts
2883  * between threads, you will need to enable this layer to prevent race
2884  * conditions. See also our Knowledge Base article about threading:
2885  * https://tls.mbed.org/kb/development/thread-safety-and-multi-threading
2886  *
2887  * Module:  library/threading.c
2888  *
2889  * This allows different threading implementations (self-implemented or
2890  * provided).
2891  *
2892  * You will have to enable either MBEDTLS_THREADING_ALT or
2893  * MBEDTLS_THREADING_PTHREAD.
2894  *
2895  * Enable this layer to allow use of mutexes within mbed TLS
2896  */
2897 //#define MBEDTLS_THREADING_C
2898 
2899 /**
2900  * \def MBEDTLS_TIMING_C
2901  *
2902  * Enable the semi-portable timing interface.
2903  *
2904  * \note The provided implementation only works on POSIX/Unix (including Linux,
2905  * BSD and OS X) and Windows. On other platforms, you can either disable that
2906  * module and provide your own implementations of the callbacks needed by
2907  * \c mbedtls_ssl_set_timer_cb() for DTLS, or leave it enabled and provide
2908  * your own implementation of the whole module by setting
2909  * \c MBEDTLS_TIMING_ALT in the current file.
2910  *
2911  * \note See also our Knowledge Base article about porting to a new
2912  * environment:
2913  * https://tls.mbed.org/kb/how-to/how-do-i-port-mbed-tls-to-a-new-environment-OS
2914  *
2915  * Module:  library/timing.c
2916  */
2917 //#define MBEDTLS_TIMING_C
2918 
2919 /**
2920  * \def MBEDTLS_VERSION_C
2921  *
2922  * Enable run-time version information.
2923  *
2924  * Module:  library/version.c
2925  *
2926  * This module provides run-time version information.
2927  */
2928 #define MBEDTLS_VERSION_C
2929 
2930 /**
2931  * \def MBEDTLS_X509_USE_C
2932  *
2933  * Enable X.509 core for using certificates.
2934  *
2935  * Module:  library/x509.c
2936  * Caller:  library/x509_crl.c
2937  *          library/x509_crt.c
2938  *          library/x509_csr.c
2939  *
2940  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_BIGNUM_C, MBEDTLS_OID_C,
2941  *           MBEDTLS_PK_PARSE_C
2942  *
2943  * This module is required for the X.509 parsing modules.
2944  */
2945 #define MBEDTLS_X509_USE_C
2946 
2947 /**
2948  * \def MBEDTLS_X509_CRT_PARSE_C
2949  *
2950  * Enable X.509 certificate parsing.
2951  *
2952  * Module:  library/x509_crt.c
2953  * Caller:  library/ssl_cli.c
2954  *          library/ssl_srv.c
2955  *          library/ssl_tls.c
2956  *
2957  * Requires: MBEDTLS_X509_USE_C
2958  *
2959  * This module is required for X.509 certificate parsing.
2960  */
2961 #define MBEDTLS_X509_CRT_PARSE_C
2962 
2963 /**
2964  * \def MBEDTLS_X509_CRL_PARSE_C
2965  *
2966  * Enable X.509 CRL parsing.
2967  *
2968  * Module:  library/x509_crl.c
2969  * Caller:  library/x509_crt.c
2970  *
2971  * Requires: MBEDTLS_X509_USE_C
2972  *
2973  * This module is required for X.509 CRL parsing.
2974  */
2975 #define MBEDTLS_X509_CRL_PARSE_C
2976 
2977 /**
2978  * \def MBEDTLS_X509_CSR_PARSE_C
2979  *
2980  * Enable X.509 Certificate Signing Request (CSR) parsing.
2981  *
2982  * Module:  library/x509_csr.c
2983  * Caller:  library/x509_crt_write.c
2984  *
2985  * Requires: MBEDTLS_X509_USE_C
2986  *
2987  * This module is used for reading X.509 certificate request.
2988  */
2989 //#define MBEDTLS_X509_CSR_PARSE_C
2990 
2991 /**
2992  * \def MBEDTLS_X509_CREATE_C
2993  *
2994  * Enable X.509 core for creating certificates.
2995  *
2996  * Module:  library/x509_create.c
2997  *
2998  * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C, MBEDTLS_PK_WRITE_C
2999  *
3000  * This module is the basis for creating X.509 certificates and CSRs.
3001  */
3002 //#define MBEDTLS_X509_CREATE_C
3003 
3004 /**
3005  * \def MBEDTLS_X509_CRT_WRITE_C
3006  *
3007  * Enable creating X.509 certificates.
3008  *
3009  * Module:  library/x509_crt_write.c
3010  *
3011  * Requires: MBEDTLS_X509_CREATE_C
3012  *
3013  * This module is required for X.509 certificate creation.
3014  */
3015 //#define MBEDTLS_X509_CRT_WRITE_C
3016 
3017 /**
3018  * \def MBEDTLS_X509_CSR_WRITE_C
3019  *
3020  * Enable creating X.509 Certificate Signing Requests (CSR).
3021  *
3022  * Module:  library/x509_csr_write.c
3023  *
3024  * Requires: MBEDTLS_X509_CREATE_C
3025  *
3026  * This module is required for X.509 certificate request writing.
3027  */
3028 //#define MBEDTLS_X509_CSR_WRITE_C
3029 
3030 /* \} name SECTION: mbed TLS modules */
3031 
3032 /**
3033  * \name SECTION: Module configuration options
3034  *
3035  * This section allows for the setting of module specific sizes and
3036  * configuration options. The default values are already present in the
3037  * relevant header files and should suffice for the regular use cases.
3038  *
3039  * Our advice is to enable options and change their values here
3040  * only if you have a good reason and know the consequences.
3041  *
3042  * Please check the respective header file for documentation on these
3043  * parameters (to prevent duplicate documentation).
3044  * \{
3045  */
3046 
3047 /* MPI / BIGNUM options */
3048 //#define MBEDTLS_MPI_WINDOW_SIZE            6 /**< Maximum window size used. */
3049 //#define MBEDTLS_MPI_MAX_SIZE            1024 /**< Maximum number of bytes for usable MPIs. */
3050 
3051 /* CTR_DRBG options */
3052 //#define MBEDTLS_CTR_DRBG_ENTROPY_LEN               48 /**< Amount of entropy used per seed by default (48 with SHA-512, 32 with SHA-256) */
3053 //#define MBEDTLS_CTR_DRBG_RESEED_INTERVAL        10000 /**< Interval before reseed is performed by default */
3054 //#define MBEDTLS_CTR_DRBG_MAX_INPUT                256 /**< Maximum number of additional input bytes */
3055 //#define MBEDTLS_CTR_DRBG_MAX_REQUEST             1024 /**< Maximum number of requested bytes per call */
3056 //#define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT           384 /**< Maximum size of (re)seed buffer */
3057 
3058 /* HMAC_DRBG options */
3059 //#define MBEDTLS_HMAC_DRBG_RESEED_INTERVAL   10000 /**< Interval before reseed is performed by default */
3060 //#define MBEDTLS_HMAC_DRBG_MAX_INPUT           256 /**< Maximum number of additional input bytes */
3061 //#define MBEDTLS_HMAC_DRBG_MAX_REQUEST        1024 /**< Maximum number of requested bytes per call */
3062 //#define MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT      384 /**< Maximum size of (re)seed buffer */
3063 
3064 /* ECP options */
3065 //#define MBEDTLS_ECP_WINDOW_SIZE            4 /**< Maximum window size used */
3066 //#define MBEDTLS_ECP_FIXED_POINT_OPTIM      1 /**< Enable fixed-point speed-up */
3067 
3068 /* Entropy options */
3069 //#define MBEDTLS_ENTROPY_MAX_SOURCES                20 /**< Maximum number of sources supported */
3070 //#define MBEDTLS_ENTROPY_MAX_GATHER                128 /**< Maximum amount requested from entropy sources */
3071 //#define MBEDTLS_ENTROPY_MIN_HARDWARE               32 /**< Default minimum number of bytes required for the hardware entropy source mbedtls_hardware_poll() before entropy is released */
3072 
3073 /* Memory buffer allocator options */
3074 //#define MBEDTLS_MEMORY_ALIGN_MULTIPLE      4 /**< Align on multiples of this value */
3075 
3076 /* Platform options */
3077 //#define MBEDTLS_PLATFORM_STD_MEM_HDR   <stdlib.h> /**< Header to include if MBEDTLS_PLATFORM_NO_STD_FUNCTIONS is defined. Don't define if no header is needed. */
3078 #define MBEDTLS_PLATFORM_STD_CALLOC        calloc /**< Default allocator to use, can be undefined */
3079 #define MBEDTLS_PLATFORM_STD_FREE            free /**< Default free to use, can be undefined */
3080 //#define MBEDTLS_PLATFORM_STD_EXIT            exit /**< Default exit to use, can be undefined */
3081 //#define MBEDTLS_PLATFORM_STD_TIME            time /**< Default time to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3082 //#define MBEDTLS_PLATFORM_STD_FPRINTF      fprintf /**< Default fprintf to use, can be undefined */
3083 //#define MBEDTLS_PLATFORM_STD_PRINTF        printf /**< Default printf to use, can be undefined */
3084 /* Note: your snprintf must correctly zero-terminate the buffer! */
3085 #define MBEDTLS_PLATFORM_STD_SNPRINTF    snprintf /**< Default snprintf to use, can be undefined */
3086 //#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS       0 /**< Default exit value to use, can be undefined */
3087 //#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE       1 /**< Default exit value to use, can be undefined */
3088 //#define MBEDTLS_PLATFORM_STD_NV_SEED_READ   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */
3089 //#define MBEDTLS_PLATFORM_STD_NV_SEED_WRITE  mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */
3090 //#define MBEDTLS_PLATFORM_STD_NV_SEED_FILE  "seedfile" /**< Seed file to read/write with default implementation */
3091 
3092 /* To Use Function Macros MBEDTLS_PLATFORM_C must be enabled */
3093 /* MBEDTLS_PLATFORM_XXX_MACRO and MBEDTLS_PLATFORM_XXX_ALT cannot both be defined */
3094 //#define MBEDTLS_PLATFORM_CALLOC_MACRO        calloc /**< Default allocator macro to use, can be undefined */
3095 //#define MBEDTLS_PLATFORM_FREE_MACRO            free /**< Default free macro to use, can be undefined */
3096 //#define MBEDTLS_PLATFORM_EXIT_MACRO            exit /**< Default exit macro to use, can be undefined */
3097 //#define MBEDTLS_PLATFORM_TIME_MACRO            time /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3098 //#define MBEDTLS_PLATFORM_TIME_TYPE_MACRO       time_t /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3099 //#define MBEDTLS_PLATFORM_FPRINTF_MACRO      fprintf /**< Default fprintf macro to use, can be undefined */
3100 //#define MBEDTLS_PLATFORM_PRINTF_MACRO        printf /**< Default printf macro to use, can be undefined */
3101 /* Note: your snprintf must correctly zero-terminate the buffer! */
3102 //#define MBEDTLS_PLATFORM_SNPRINTF_MACRO    snprintf /**< Default snprintf macro to use, can be undefined */
3103 //#define MBEDTLS_PLATFORM_VSNPRINTF_MACRO    vsnprintf /**< Default vsnprintf macro to use, can be undefined */
3104 //#define MBEDTLS_PLATFORM_NV_SEED_READ_MACRO   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */
3105 //#define MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO  mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */
3106 
3107 /** \def MBEDTLS_CHECK_RETURN
3108  *
3109  * This macro is used at the beginning of the declaration of a function
3110  * to indicate that its return value should be checked. It should
3111  * instruct the compiler to emit a warning or an error if the function
3112  * is called without checking its return value.
3113  *
3114  * There is a default implementation for popular compilers in platform_util.h.
3115  * You can override the default implementation by defining your own here.
3116  *
3117  * If the implementation here is empty, this will effectively disable the
3118  * checking of functions' return values.
3119  */
3120 //#define MBEDTLS_CHECK_RETURN __attribute__((__warn_unused_result__))
3121 
3122 /** \def MBEDTLS_IGNORE_RETURN
3123  *
3124  * This macro requires one argument, which should be a C function call.
3125  * If that function call would cause a #MBEDTLS_CHECK_RETURN warning, this
3126  * warning is suppressed.
3127  */
3128 //#define MBEDTLS_IGNORE_RETURN( result ) ((void) !(result))
3129 
3130 /* PSA options */
3131 /**
3132  * Use HMAC_DRBG with the specified hash algorithm for HMAC_DRBG for the
3133  * PSA crypto subsystem.
3134  *
3135  * If this option is unset:
3136  * - If CTR_DRBG is available, the PSA subsystem uses it rather than HMAC_DRBG.
3137  * - Otherwise, the PSA subsystem uses HMAC_DRBG with either
3138  *   #MBEDTLS_MD_SHA512 or #MBEDTLS_MD_SHA256 based on availability and
3139  *   on unspecified heuristics.
3140  */
3141 //#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA256
3142 
3143 /** \def MBEDTLS_PSA_KEY_SLOT_COUNT
3144  * Restrict the PSA library to supporting a maximum amount of simultaneously
3145  * loaded keys. A loaded key is a key stored by the PSA Crypto core as a
3146  * volatile key, or a persistent key which is loaded temporarily by the
3147  * library as part of a crypto operation in flight.
3148  *
3149  * If this option is unset, the library will fall back to a default value of
3150  * 32 keys.
3151  */
3152 //#define MBEDTLS_PSA_KEY_SLOT_COUNT 32
3153 
3154 /* SSL Cache options */
3155 //#define MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT       86400 /**< 1 day  */
3156 //#define MBEDTLS_SSL_CACHE_DEFAULT_MAX_ENTRIES      50 /**< Maximum entries in cache */
3157 
3158 /* SSL options */
3159 
3160 /** \def MBEDTLS_SSL_MAX_CONTENT_LEN
3161  *
3162  * Maximum length (in bytes) of incoming and outgoing plaintext fragments.
3163  *
3164  * This determines the size of both the incoming and outgoing TLS I/O buffers
3165  * in such a way that both are capable of holding the specified amount of
3166  * plaintext data, regardless of the protection mechanism used.
3167  *
3168  * To configure incoming and outgoing I/O buffers separately, use
3169  * #MBEDTLS_SSL_IN_CONTENT_LEN and #MBEDTLS_SSL_OUT_CONTENT_LEN,
3170  * which overwrite the value set by this option.
3171  *
3172  * \note When using a value less than the default of 16KB on the client, it is
3173  *       recommended to use the Maximum Fragment Length (MFL) extension to
3174  *       inform the server about this limitation. On the server, there
3175  *       is no supported, standardized way of informing the client about
3176  *       restriction on the maximum size of incoming messages, and unless
3177  *       the limitation has been communicated by other means, it is recommended
3178  *       to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN
3179  *       while keeping the default value of 16KB for the incoming buffer.
3180  *
3181  * Uncomment to set the maximum plaintext size of both
3182  * incoming and outgoing I/O buffers.
3183  */
3184 #define MBEDTLS_SSL_MAX_CONTENT_LEN             16384
3185 
3186 /** \def MBEDTLS_SSL_IN_CONTENT_LEN
3187  *
3188  * Maximum length (in bytes) of incoming plaintext fragments.
3189  *
3190  * This determines the size of the incoming TLS I/O buffer in such a way
3191  * that it is capable of holding the specified amount of plaintext data,
3192  * regardless of the protection mechanism used.
3193  *
3194  * \note When using a value less than the default of 16KB on the client, it is
3195  *       recommended to use the Maximum Fragment Length (MFL) extension to
3196  *       inform the server about this limitation. On the server, there
3197  *       is no supported, standardized way of informing the client about
3198  *       restriction on the maximum size of incoming messages, and unless
3199  *       the limitation has been communicated by other means, it is recommended
3200  *       to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN
3201  *       while keeping the default value of 16KB for the incoming buffer.
3202  *
3203  * Uncomment to set the maximum plaintext size of the incoming I/O buffer.
3204  */
3205 #define MBEDTLS_SSL_IN_CONTENT_LEN              16384
3206 
3207 /** \def MBEDTLS_SSL_CID_IN_LEN_MAX
3208  *
3209  * The maximum length of CIDs used for incoming DTLS messages.
3210  *
3211  */
3212 //#define MBEDTLS_SSL_CID_IN_LEN_MAX 32
3213 
3214 /** \def MBEDTLS_SSL_CID_OUT_LEN_MAX
3215  *
3216  * The maximum length of CIDs used for outgoing DTLS messages.
3217  *
3218  */
3219 //#define MBEDTLS_SSL_CID_OUT_LEN_MAX 32
3220 
3221 /** \def MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY
3222  *
3223  * This option controls the use of record plaintext padding
3224  * in TLS 1.3 and when using the Connection ID extension in DTLS 1.2.
3225  *
3226  * The padding will always be chosen so that the length of the
3227  * padded plaintext is a multiple of the value of this option.
3228  *
3229  * Note: A value of \c 1 means that no padding will be used
3230  *       for outgoing records.
3231  *
3232  * Note: On systems lacking division instructions,
3233  *       a power of two should be preferred.
3234  */
3235 //#define MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY 16
3236 
3237 /** \def MBEDTLS_SSL_OUT_CONTENT_LEN
3238  *
3239  * Maximum length (in bytes) of outgoing plaintext fragments.
3240  *
3241  * This determines the size of the outgoing TLS I/O buffer in such a way
3242  * that it is capable of holding the specified amount of plaintext data,
3243  * regardless of the protection mechanism used.
3244  *
3245  * It is possible to save RAM by setting a smaller outward buffer, while keeping
3246  * the default inward 16384 byte buffer to conform to the TLS specification.
3247  *
3248  * The minimum required outward buffer size is determined by the handshake
3249  * protocol's usage. Handshaking will fail if the outward buffer is too small.
3250  * The specific size requirement depends on the configured ciphers and any
3251  * certificate data which is sent during the handshake.
3252  *
3253  * Uncomment to set the maximum plaintext size of the outgoing I/O buffer.
3254  */
3255 #define MBEDTLS_SSL_OUT_CONTENT_LEN             16384
3256 
3257 /** \def MBEDTLS_SSL_DTLS_MAX_BUFFERING
3258  *
3259  * Maximum number of heap-allocated bytes for the purpose of
3260  * DTLS handshake message reassembly and future message buffering.
3261  *
3262  * This should be at least 9/8 * MBEDTLS_SSL_IN_CONTENT_LEN
3263  * to account for a reassembled handshake message of maximum size,
3264  * together with its reassembly bitmap.
3265  *
3266  * A value of 2 * MBEDTLS_SSL_IN_CONTENT_LEN (32768 by default)
3267  * should be sufficient for all practical situations as it allows
3268  * to reassembly a large handshake message (such as a certificate)
3269  * while buffering multiple smaller handshake messages.
3270  *
3271  */
3272 //#define MBEDTLS_SSL_DTLS_MAX_BUFFERING             32768
3273 
3274 //#define MBEDTLS_PSK_MAX_LEN               32 /**< Max size of TLS pre-shared keys, in bytes (default 256 bits) */
3275 //#define MBEDTLS_SSL_COOKIE_TIMEOUT        60 /**< Default expiration delay of DTLS cookies, in seconds if HAVE_TIME, or in number of cookies issued */
3276 
3277 /** \def MBEDTLS_TLS_EXT_CID
3278  *
3279  * At the time of writing, the CID extension has not been assigned its
3280  * final value. Set this configuration option to make Mbed TLS use a
3281  * different value.
3282  *
3283  * A future minor revision of Mbed TLS may change the default value of
3284  * this option to match evolving standards and usage.
3285  */
3286 //#define MBEDTLS_TLS_EXT_CID                        254
3287 
3288 /**
3289  * Complete list of ciphersuites to use, in order of preference.
3290  *
3291  * \warning No dependency checking is done on that field! This option can only
3292  * be used to restrict the set of available ciphersuites. It is your
3293  * responsibility to make sure the needed modules are active.
3294  *
3295  * Use this to save a few hundred bytes of ROM (default ordering of all
3296  * available ciphersuites) and a few to a few hundred bytes of RAM.
3297  *
3298  * The value below is only an example, not the default.
3299  */
3300 //#define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
3301 
3302 /* X509 options */
3303 //#define MBEDTLS_X509_MAX_INTERMEDIATE_CA   8   /**< Maximum number of intermediate CAs in a verification chain. */
3304 //#define MBEDTLS_X509_MAX_FILE_PATH_LEN     512 /**< Maximum length of a path/filename string in bytes including the null terminator character ('\0'). */
3305 
3306 /**
3307  * Uncomment the macro to let mbed TLS use your alternate implementation of
3308  * mbedtls_platform_zeroize(). This replaces the default implementation in
3309  * platform_util.c.
3310  *
3311  * mbedtls_platform_zeroize() is a widely used function across the library to
3312  * zero a block of memory. The implementation is expected to be secure in the
3313  * sense that it has been written to prevent the compiler from removing calls
3314  * to mbedtls_platform_zeroize() as part of redundant code elimination
3315  * optimizations. However, it is difficult to guarantee that calls to
3316  * mbedtls_platform_zeroize() will not be optimized by the compiler as older
3317  * versions of the C language standards do not provide a secure implementation
3318  * of memset(). Therefore, MBEDTLS_PLATFORM_ZEROIZE_ALT enables users to
3319  * configure their own implementation of mbedtls_platform_zeroize(), for
3320  * example by using directives specific to their compiler, features from newer
3321  * C standards (e.g using memset_s() in C11) or calling a secure memset() from
3322  * their system (e.g explicit_bzero() in BSD).
3323  */
3324 //#define MBEDTLS_PLATFORM_ZEROIZE_ALT
3325 
3326 /**
3327  * Uncomment the macro to let Mbed TLS use your alternate implementation of
3328  * mbedtls_platform_gmtime_r(). This replaces the default implementation in
3329  * platform_util.c.
3330  *
3331  * gmtime() is not a thread-safe function as defined in the C standard. The
3332  * library will try to use safer implementations of this function, such as
3333  * gmtime_r() when available. However, if Mbed TLS cannot identify the target
3334  * system, the implementation of mbedtls_platform_gmtime_r() will default to
3335  * using the standard gmtime(). In this case, calls from the library to
3336  * gmtime() will be guarded by the global mutex mbedtls_threading_gmtime_mutex
3337  * if MBEDTLS_THREADING_C is enabled. We recommend that calls from outside the
3338  * library are also guarded with this mutex to avoid race conditions. However,
3339  * if the macro MBEDTLS_PLATFORM_GMTIME_R_ALT is defined, Mbed TLS will
3340  * unconditionally use the implementation for mbedtls_platform_gmtime_r()
3341  * supplied at compile time.
3342  */
3343 //#define MBEDTLS_PLATFORM_GMTIME_R_ALT
3344 
3345 /**
3346  * Enable the verified implementations of ECDH primitives from Project Everest
3347  * (currently only Curve25519). This feature changes the layout of ECDH
3348  * contexts and therefore is a compatibility break for applications that access
3349  * fields of a mbedtls_ecdh_context structure directly. See also
3350  * MBEDTLS_ECDH_LEGACY_CONTEXT in include/mbedtls/ecdh.h.
3351  */
3352 //#define MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
3353 
3354 /* \} name SECTION: Customisation configuration options */
3355