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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 compatibility 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 /**
44  * \def MBEDTLS_HAVE_ASM
45  *
46  * The compiler has support for asm().
47  *
48  * Requires support for asm() in compiler.
49  *
50  * Used in:
51  *      library/aesni.h
52  *      library/aria.c
53  *      library/bn_mul.h
54  *      library/constant_time.c
55  *      library/padlock.h
56  *
57  * Required by:
58  *      MBEDTLS_AESCE_C
59  *      MBEDTLS_AESNI_C (on some platforms)
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  * \note If MBEDTLS_TIMING_C is set - to enable the semi-portable timing
139  *       interface - timing.c will include time.h on suitable platforms
140  *       regardless of the setting of MBEDTLS_HAVE_TIME, unless
141  *       MBEDTLS_TIMING_ALT is used. See timing.c for more information.
142  */
143 #define MBEDTLS_HAVE_TIME
144 
145 /**
146  * \def MBEDTLS_HAVE_TIME_DATE
147  *
148  * System has time.h, time(), and an implementation for
149  * mbedtls_platform_gmtime_r() (see below).
150  * The time needs to be correct (not necessarily very accurate, but at least
151  * the date should be correct). This is used to verify the validity period of
152  * X.509 certificates.
153  *
154  * Comment if your system does not have a correct clock.
155  *
156  * \note mbedtls_platform_gmtime_r() is an abstraction in platform_util.h that
157  * behaves similarly to the gmtime_r() function from the C standard. Refer to
158  * the documentation for mbedtls_platform_gmtime_r() for more information.
159  *
160  * \note It is possible to configure an implementation for
161  * mbedtls_platform_gmtime_r() at compile-time by using the macro
162  * MBEDTLS_PLATFORM_GMTIME_R_ALT.
163  */
164 // #define MBEDTLS_HAVE_TIME_DATE
165 
166 /**
167  * \def MBEDTLS_PLATFORM_MEMORY
168  *
169  * Enable the memory allocation layer.
170  *
171  * By default mbed TLS uses the system-provided calloc() and free().
172  * This allows different allocators (self-implemented or provided) to be
173  * provided to the platform abstraction layer.
174  *
175  * Enabling MBEDTLS_PLATFORM_MEMORY without the
176  * MBEDTLS_PLATFORM_{FREE,CALLOC}_MACROs will provide
177  * "mbedtls_platform_set_calloc_free()" allowing you to set an alternative calloc() and
178  * free() function pointer at runtime.
179  *
180  * Enabling MBEDTLS_PLATFORM_MEMORY and specifying
181  * MBEDTLS_PLATFORM_{CALLOC,FREE}_MACROs will allow you to specify the
182  * alternate function at compile time.
183  *
184  * Requires: MBEDTLS_PLATFORM_C
185  *
186  * Enable this layer to allow use of alternative memory allocators.
187  */
188 #define MBEDTLS_PLATFORM_MEMORY
189 
190 /**
191  * \def MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
192  *
193  * Do not assign standard functions in the platform layer (e.g. calloc() to
194  * MBEDTLS_PLATFORM_STD_CALLOC and printf() to MBEDTLS_PLATFORM_STD_PRINTF)
195  *
196  * This makes sure there are no linking errors on platforms that do not support
197  * these functions. You will HAVE to provide alternatives, either at runtime
198  * via the platform_set_xxx() functions or at compile time by setting
199  * the MBEDTLS_PLATFORM_STD_XXX defines, or enabling a
200  * MBEDTLS_PLATFORM_XXX_MACRO.
201  *
202  * Requires: MBEDTLS_PLATFORM_C
203  *
204  * Uncomment to prevent default assignment of standard functions in the
205  * platform layer.
206  */
207 #define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
208 
209 /**
210  * \def MBEDTLS_PLATFORM_EXIT_ALT
211  *
212  * MBEDTLS_PLATFORM_XXX_ALT: Uncomment a macro to let mbed TLS support the
213  * function in the platform abstraction layer.
214  *
215  * Example: In case you uncomment MBEDTLS_PLATFORM_PRINTF_ALT, mbed TLS will
216  * provide a function "mbedtls_platform_set_printf()" that allows you to set an
217  * alternative printf function pointer.
218  *
219  * All these define require MBEDTLS_PLATFORM_C to be defined!
220  *
221  * \note MBEDTLS_PLATFORM_SNPRINTF_ALT is required on Windows;
222  * it will be enabled automatically by check_config.h
223  *
224  * \warning MBEDTLS_PLATFORM_XXX_ALT cannot be defined at the same time as
225  * MBEDTLS_PLATFORM_XXX_MACRO!
226  *
227  * Requires: MBEDTLS_PLATFORM_TIME_ALT requires MBEDTLS_HAVE_TIME
228  *
229  * Uncomment a macro to enable alternate implementation of specific base
230  * platform function
231  */
232 //#define MBEDTLS_PLATFORM_SETBUF_ALT
233 //#define MBEDTLS_PLATFORM_EXIT_ALT
234 #define MBEDTLS_PLATFORM_TIME_ALT
235 //#define MBEDTLS_PLATFORM_FPRINTF_ALT
236 //#define MBEDTLS_PLATFORM_PRINTF_ALT
237 #define MBEDTLS_PLATFORM_SNPRINTF_ALT
238 //#define MBEDTLS_PLATFORM_VSNPRINTF_ALT
239 //#define MBEDTLS_PLATFORM_NV_SEED_ALT
240 //#define MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT
241 
242 /**
243  * \def MBEDTLS_DEPRECATED_WARNING
244  *
245  * Mark deprecated functions and features so that they generate a warning if
246  * used. Functionality deprecated in one version will usually be removed in the
247  * next version. You can enable this to help you prepare the transition to a
248  * new major version by making sure your code is not using this functionality.
249  *
250  * This only works with GCC and Clang. With other compilers, you may want to
251  * use MBEDTLS_DEPRECATED_REMOVED
252  *
253  * Uncomment to get warnings on using deprecated functions and features.
254  */
255 //#define MBEDTLS_DEPRECATED_WARNING
256 
257 /**
258  * \def MBEDTLS_DEPRECATED_REMOVED
259  *
260  * Remove deprecated functions and features so that they generate an error if
261  * used. Functionality deprecated in one version will usually be removed in the
262  * next version. You can enable this to help you prepare the transition to a
263  * new major version by making sure your code is not using this functionality.
264  *
265  * Uncomment to get errors on using deprecated functions and features.
266  */
267 //#define MBEDTLS_DEPRECATED_REMOVED
268 
269 /** \} name SECTION: System support */
270 
271 /**
272  * \name SECTION: mbed TLS feature support
273  *
274  * This section sets support for features that are or are not needed
275  * within the modules that are enabled.
276  * \{
277  */
278 
279 /**
280  * \def MBEDTLS_TIMING_ALT
281  *
282  * Uncomment to provide your own alternate implementation for
283  * mbedtls_timing_get_timer(), mbedtls_set_alarm(), mbedtls_set/get_delay()
284  *
285  * Only works if you have MBEDTLS_TIMING_C enabled.
286  *
287  * You will need to provide a header "timing_alt.h" and an implementation at
288  * compile time.
289  */
290 //#define MBEDTLS_TIMING_ALT
291 
292 /**
293  * \def MBEDTLS_AES_ALT
294  *
295  * MBEDTLS__MODULE_NAME__ALT: Uncomment a macro to let mbed TLS use your
296  * alternate core implementation of a symmetric crypto, an arithmetic or hash
297  * module (e.g. platform specific assembly optimized implementations). Keep
298  * in mind that the function prototypes should remain the same.
299  *
300  * This replaces the whole module. If you only want to replace one of the
301  * functions, use one of the MBEDTLS__FUNCTION_NAME__ALT flags.
302  *
303  * Example: In case you uncomment MBEDTLS_AES_ALT, mbed TLS will no longer
304  * provide the "struct mbedtls_aes_context" definition and omit the base
305  * function declarations and implementations. "aes_alt.h" will be included from
306  * "aes.h" to include the new function definitions.
307  *
308  * Uncomment a macro to enable alternate implementation of the corresponding
309  * module.
310  *
311  * \warning   MD5, DES and SHA-1 are considered weak and their
312  *            use constitutes a security risk. If possible, we recommend
313  *            avoiding dependencies on them, and considering stronger message
314  *            digests and ciphers instead.
315  *
316  */
317 //#define MBEDTLS_AES_ALT
318 //#define MBEDTLS_ARIA_ALT
319 //#define MBEDTLS_CAMELLIA_ALT
320 //#define MBEDTLS_CCM_ALT
321 //#define MBEDTLS_CHACHA20_ALT
322 //#define MBEDTLS_CHACHAPOLY_ALT
323 //#define MBEDTLS_CMAC_ALT
324 //#define MBEDTLS_DES_ALT
325 //#define MBEDTLS_DHM_ALT
326 //#define MBEDTLS_ECJPAKE_ALT
327 //#define MBEDTLS_GCM_ALT
328 //#define MBEDTLS_NIST_KW_ALT
329 //#define MBEDTLS_MD5_ALT
330 //#define MBEDTLS_POLY1305_ALT
331 //#define MBEDTLS_RIPEMD160_ALT
332 //#define MBEDTLS_RSA_ALT
333 //#define MBEDTLS_SHA1_ALT
334 //#define MBEDTLS_SHA256_ALT
335 //#define MBEDTLS_SHA512_ALT
336 
337 /*
338  * When replacing the elliptic curve module, please consider, that it is
339  * implemented with two .c files:
340  *      - ecp.c
341  *      - ecp_curves.c
342  * You can replace them very much like all the other MBEDTLS__MODULE_NAME__ALT
343  * macros as described above. The only difference is that you have to make sure
344  * that you provide functionality for both .c files.
345  */
346 //#define MBEDTLS_ECP_ALT
347 
348 /**
349  * \def MBEDTLS_SHA256_PROCESS_ALT
350  *
351  * MBEDTLS__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use you
352  * alternate core implementation of symmetric crypto or hash function. Keep in
353  * mind that function prototypes should remain the same.
354  *
355  * This replaces only one function. The header file from mbed TLS is still
356  * used, in contrast to the MBEDTLS__MODULE_NAME__ALT flags.
357  *
358  * Example: In case you uncomment MBEDTLS_SHA256_PROCESS_ALT, mbed TLS will
359  * no longer provide the mbedtls_sha1_process() function, but it will still provide
360  * the other function (using your mbedtls_sha1_process() function) and the definition
361  * of mbedtls_sha1_context, so your implementation of mbedtls_sha1_process must be compatible
362  * with this definition.
363  *
364  * \note If you use the AES_xxx_ALT macros, then it is recommended to also set
365  *       MBEDTLS_AES_ROM_TABLES in order to help the linker garbage-collect the AES
366  *       tables.
367  *
368  * Uncomment a macro to enable alternate implementation of the corresponding
369  * function.
370  *
371  * \warning   MD5, DES and SHA-1 are considered weak and their use
372  *            constitutes a security risk. If possible, we recommend avoiding
373  *            dependencies on them, and considering stronger message digests
374  *            and ciphers instead.
375  *
376  * \warning   If both MBEDTLS_ECDSA_SIGN_ALT and MBEDTLS_ECDSA_DETERMINISTIC are
377  *            enabled, then the deterministic ECDH signature functions pass the
378  *            the static HMAC-DRBG as RNG to mbedtls_ecdsa_sign(). Therefore
379  *            alternative implementations should use the RNG only for generating
380  *            the ephemeral key and nothing else. If this is not possible, then
381  *            MBEDTLS_ECDSA_DETERMINISTIC should be disabled and an alternative
382  *            implementation should be provided for mbedtls_ecdsa_sign_det_ext().
383  *
384  */
385 //#define MBEDTLS_MD5_PROCESS_ALT
386 //#define MBEDTLS_RIPEMD160_PROCESS_ALT
387 //#define MBEDTLS_SHA1_PROCESS_ALT
388 //#define MBEDTLS_SHA256_PROCESS_ALT
389 //#define MBEDTLS_SHA512_PROCESS_ALT
390 //#define MBEDTLS_DES_SETKEY_ALT
391 //#define MBEDTLS_DES_CRYPT_ECB_ALT
392 //#define MBEDTLS_DES3_CRYPT_ECB_ALT
393 //#define MBEDTLS_AES_SETKEY_ENC_ALT
394 //#define MBEDTLS_AES_SETKEY_DEC_ALT
395 //#define MBEDTLS_AES_ENCRYPT_ALT
396 //#define MBEDTLS_AES_DECRYPT_ALT
397 //#define MBEDTLS_ECDH_GEN_PUBLIC_ALT
398 //#define MBEDTLS_ECDH_COMPUTE_SHARED_ALT
399 //#define MBEDTLS_ECDSA_VERIFY_ALT
400 //#define MBEDTLS_ECDSA_SIGN_ALT
401 //#define MBEDTLS_ECDSA_GENKEY_ALT
402 
403 /**
404  * \def MBEDTLS_ECP_INTERNAL_ALT
405  *
406  * Expose a part of the internal interface of the Elliptic Curve Point module.
407  *
408  * MBEDTLS_ECP__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use your
409  * alternative core implementation of elliptic curve arithmetic. Keep in mind
410  * that function prototypes should remain the same.
411  *
412  * This partially replaces one function. The header file from mbed TLS is still
413  * used, in contrast to the MBEDTLS_ECP_ALT flag. The original implementation
414  * is still present and it is used for group structures not supported by the
415  * alternative.
416  *
417  * The original implementation can in addition be removed by setting the
418  * MBEDTLS_ECP_NO_FALLBACK option, in which case any function for which the
419  * corresponding MBEDTLS_ECP__FUNCTION_NAME__ALT macro is defined will not be
420  * able to fallback to curves not supported by the alternative implementation.
421  *
422  * Any of these options become available by defining MBEDTLS_ECP_INTERNAL_ALT
423  * and implementing the following functions:
424  *      unsigned char mbedtls_internal_ecp_grp_capable(
425  *          const mbedtls_ecp_group *grp )
426  *      int  mbedtls_internal_ecp_init( const mbedtls_ecp_group *grp )
427  *      void mbedtls_internal_ecp_free( const mbedtls_ecp_group *grp )
428  * The mbedtls_internal_ecp_grp_capable function should return 1 if the
429  * replacement functions implement arithmetic for the given group and 0
430  * otherwise.
431  * The functions mbedtls_internal_ecp_init and mbedtls_internal_ecp_free are
432  * called before and after each point operation and provide an opportunity to
433  * implement optimized set up and tear down instructions.
434  *
435  * Example: In case you set MBEDTLS_ECP_INTERNAL_ALT and
436  * MBEDTLS_ECP_DOUBLE_JAC_ALT, mbed TLS will still provide the ecp_double_jac()
437  * function, but will use your mbedtls_internal_ecp_double_jac() if the group
438  * for the operation is supported by your implementation (i.e. your
439  * mbedtls_internal_ecp_grp_capable() function returns 1 for this group). If the
440  * group is not supported by your implementation, then the original mbed TLS
441  * implementation of ecp_double_jac() is used instead, unless this fallback
442  * behaviour is disabled by setting MBEDTLS_ECP_NO_FALLBACK (in which case
443  * ecp_double_jac() will return MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE).
444  *
445  * The function prototypes and the definition of mbedtls_ecp_group and
446  * mbedtls_ecp_point will not change based on MBEDTLS_ECP_INTERNAL_ALT, so your
447  * implementation of mbedtls_internal_ecp__function_name__ must be compatible
448  * with their definitions.
449  *
450  * Uncomment a macro to enable alternate implementation of the corresponding
451  * function.
452  */
453 /* Required for all the functions in this section */
454 //#define MBEDTLS_ECP_INTERNAL_ALT
455 /* Turn off software fallback for curves not supported in hardware */
456 //#define MBEDTLS_ECP_NO_FALLBACK
457 /* Support for Weierstrass curves with Jacobi representation */
458 //#define MBEDTLS_ECP_RANDOMIZE_JAC_ALT
459 //#define MBEDTLS_ECP_ADD_MIXED_ALT
460 //#define MBEDTLS_ECP_DOUBLE_JAC_ALT
461 //#define MBEDTLS_ECP_NORMALIZE_JAC_MANY_ALT
462 //#define MBEDTLS_ECP_NORMALIZE_JAC_ALT
463 /* Support for curves with Montgomery arithmetic */
464 //#define MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT
465 //#define MBEDTLS_ECP_RANDOMIZE_MXZ_ALT
466 //#define MBEDTLS_ECP_NORMALIZE_MXZ_ALT
467 
468 /**
469  * \def MBEDTLS_ENTROPY_HARDWARE_ALT
470  *
471  * Uncomment this macro to let mbed TLS use your own implementation of a
472  * hardware entropy collector.
473  *
474  * Your function must be called \c mbedtls_hardware_poll(), have the same
475  * prototype as declared in library/entropy_poll.h, and accept NULL as first
476  * argument.
477  *
478  * Uncomment to use your own hardware entropy collector.
479  */
480 //#define MBEDTLS_ENTROPY_HARDWARE_ALT
481 
482 /**
483  * \def MBEDTLS_AES_ROM_TABLES
484  *
485  * Use precomputed AES tables stored in ROM.
486  *
487  * Uncomment this macro to use precomputed AES tables stored in ROM.
488  * Comment this macro to generate AES tables in RAM at runtime.
489  *
490  * Tradeoff: Using precomputed ROM tables reduces RAM usage by ~8kb
491  * (or ~2kb if \c MBEDTLS_AES_FEWER_TABLES is used) and reduces the
492  * initialization time before the first AES operation can be performed.
493  * It comes at the cost of additional ~8kb ROM use (resp. ~2kb if \c
494  * MBEDTLS_AES_FEWER_TABLES below is used), and potentially degraded
495  * performance if ROM access is slower than RAM access.
496  *
497  * This option is independent of \c MBEDTLS_AES_FEWER_TABLES.
498  *
499  */
500 #define MBEDTLS_AES_ROM_TABLES
501 
502 /**
503  * \def MBEDTLS_AES_FEWER_TABLES
504  *
505  * Use less ROM/RAM for AES tables.
506  *
507  * Uncommenting this macro omits 75% of the AES tables from
508  * ROM / RAM (depending on the value of \c MBEDTLS_AES_ROM_TABLES)
509  * by computing their values on the fly during operations
510  * (the tables are entry-wise rotations of one another).
511  *
512  * Tradeoff: Uncommenting this reduces the RAM / ROM footprint
513  * by ~6kb but at the cost of more arithmetic operations during
514  * runtime. Specifically, one has to compare 4 accesses within
515  * different tables to 4 accesses with additional arithmetic
516  * operations within the same table. The performance gain/loss
517  * depends on the system and memory details.
518  *
519  * This option is independent of \c MBEDTLS_AES_ROM_TABLES.
520  *
521  */
522 //#define MBEDTLS_AES_FEWER_TABLES
523 
524 /**
525  * \def MBEDTLS_CAMELLIA_SMALL_MEMORY
526  *
527  * Use less ROM for the Camellia implementation (saves about 768 bytes).
528  *
529  * Uncomment this macro to use less memory for Camellia.
530  */
531 //#define MBEDTLS_CAMELLIA_SMALL_MEMORY
532 
533 /**
534  * \def MBEDTLS_CHECK_RETURN_WARNING
535  *
536  * If this macro is defined, emit a compile-time warning if application code
537  * calls a function without checking its return value, but the return value
538  * should generally be checked in portable applications.
539  *
540  * This is only supported on platforms where #MBEDTLS_CHECK_RETURN is
541  * implemented. Otherwise this option has no effect.
542  *
543  * Uncomment to get warnings on using fallible functions without checking
544  * their return value.
545  *
546  * \note  This feature is a work in progress.
547  *        Warnings will be added to more functions in the future.
548  *
549  * \note  A few functions are considered critical, and ignoring the return
550  *        value of these functions will trigger a warning even if this
551  *        macro is not defined. To completely disable return value check
552  *        warnings, define #MBEDTLS_CHECK_RETURN with an empty expansion.
553  */
554 //#define MBEDTLS_CHECK_RETURN_WARNING
555 
556 /**
557  * \def MBEDTLS_CIPHER_MODE_CBC
558  *
559  * Enable Cipher Block Chaining mode (CBC) for symmetric ciphers.
560  */
561 #define MBEDTLS_CIPHER_MODE_CBC
562 
563 /**
564  * \def MBEDTLS_CIPHER_MODE_CFB
565  *
566  * Enable Cipher Feedback mode (CFB) for symmetric ciphers.
567  */
568 #define MBEDTLS_CIPHER_MODE_CFB
569 
570 /**
571  * \def MBEDTLS_CIPHER_MODE_CTR
572  *
573  * Enable Counter Block Cipher mode (CTR) for symmetric ciphers.
574  */
575 #define MBEDTLS_CIPHER_MODE_CTR
576 
577 /**
578  * \def MBEDTLS_CIPHER_MODE_OFB
579  *
580  * Enable Output Feedback mode (OFB) for symmetric ciphers.
581  */
582 #define MBEDTLS_CIPHER_MODE_OFB
583 
584 /**
585  * \def MBEDTLS_CIPHER_MODE_XTS
586  *
587  * Enable Xor-encrypt-xor with ciphertext stealing mode (XTS) for AES.
588  */
589 #define MBEDTLS_CIPHER_MODE_XTS
590 
591 /**
592  * \def MBEDTLS_CIPHER_NULL_CIPHER
593  *
594  * Enable NULL cipher.
595  * Warning: Only do so when you know what you are doing. This allows for
596  * encryption or channels without any security!
597  *
598  * To enable the following ciphersuites:
599  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_NULL_SHA
600  *      MBEDTLS_TLS_ECDH_RSA_WITH_NULL_SHA
601  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_NULL_SHA
602  *      MBEDTLS_TLS_ECDHE_RSA_WITH_NULL_SHA
603  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA384
604  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA256
605  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA
606  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA384
607  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA256
608  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA
609  *      MBEDTLS_TLS_RSA_WITH_NULL_SHA256
610  *      MBEDTLS_TLS_RSA_WITH_NULL_SHA
611  *      MBEDTLS_TLS_RSA_WITH_NULL_MD5
612  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA384
613  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA256
614  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA
615  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA384
616  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA256
617  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA
618  *
619  * Uncomment this macro to enable the NULL cipher and ciphersuites
620  */
621 //#define MBEDTLS_CIPHER_NULL_CIPHER
622 
623 /**
624  * \def MBEDTLS_CIPHER_PADDING_PKCS7
625  *
626  * MBEDTLS_CIPHER_PADDING_XXX: Uncomment or comment macros to add support for
627  * specific padding modes in the cipher layer with cipher modes that support
628  * padding (e.g. CBC)
629  *
630  * If you disable all padding modes, only full blocks can be used with CBC.
631  *
632  * Enable padding modes in the cipher layer.
633  */
634 #define MBEDTLS_CIPHER_PADDING_PKCS7
635 #define MBEDTLS_CIPHER_PADDING_ONE_AND_ZEROS
636 #define MBEDTLS_CIPHER_PADDING_ZEROS_AND_LEN
637 #define MBEDTLS_CIPHER_PADDING_ZEROS
638 
639 /** \def MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
640  *
641  * Uncomment this macro to use a 128-bit key in the CTR_DRBG module.
642  * By default, CTR_DRBG uses a 256-bit key.
643  */
644 //#define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
645 
646 /**
647  * \def MBEDTLS_ECP_DP_SECP192R1_ENABLED
648  *
649  * MBEDTLS_ECP_XXXX_ENABLED: Enables specific curves within the Elliptic Curve
650  * module.  By default all supported curves are enabled.
651  *
652  * Comment macros to disable the curve and functions for it
653  */
654 /* Short Weierstrass curves (supporting ECP, ECDH, ECDSA) */
655 #define MBEDTLS_ECP_DP_SECP192R1_ENABLED
656 #define MBEDTLS_ECP_DP_SECP224R1_ENABLED
657 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
658 #define MBEDTLS_ECP_DP_SECP384R1_ENABLED
659 #define MBEDTLS_ECP_DP_SECP521R1_ENABLED
660 #define MBEDTLS_ECP_DP_SECP192K1_ENABLED
661 #define MBEDTLS_ECP_DP_SECP224K1_ENABLED
662 #define MBEDTLS_ECP_DP_SECP256K1_ENABLED
663 #define MBEDTLS_ECP_DP_BP256R1_ENABLED
664 #define MBEDTLS_ECP_DP_BP384R1_ENABLED
665 #define MBEDTLS_ECP_DP_BP512R1_ENABLED
666 /* Montgomery curves (supporting ECP) */
667 #define MBEDTLS_ECP_DP_CURVE25519_ENABLED
668 #define MBEDTLS_ECP_DP_CURVE448_ENABLED
669 
670 /**
671  * \def MBEDTLS_ECP_NIST_OPTIM
672  *
673  * Enable specific 'modulo p' routines for each NIST prime.
674  * Depending on the prime and architecture, makes operations 4 to 8 times
675  * faster on the corresponding curve.
676  *
677  * Comment this macro to disable NIST curves optimisation.
678  */
679 #define MBEDTLS_ECP_NIST_OPTIM
680 
681 /**
682  * \def MBEDTLS_ECP_RESTARTABLE
683  *
684  * Enable "non-blocking" ECC operations that can return early and be resumed.
685  *
686  * This allows various functions to pause by returning
687  * #MBEDTLS_ERR_ECP_IN_PROGRESS (or, for functions in the SSL module,
688  * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) and then be called later again in
689  * order to further progress and eventually complete their operation. This is
690  * controlled through mbedtls_ecp_set_max_ops() which limits the maximum
691  * number of ECC operations a function may perform before pausing; see
692  * mbedtls_ecp_set_max_ops() for more information.
693  *
694  * This is useful in non-threaded environments if you want to avoid blocking
695  * for too long on ECC (and, hence, X.509 or SSL/TLS) operations.
696  *
697  * This option:
698  * - Adds xxx_restartable() variants of existing operations in the
699  *   following modules, with corresponding restart context types:
700  *   - ECP (for Short Weierstrass curves only): scalar multiplication (mul),
701  *     linear combination (muladd);
702  *   - ECDSA: signature generation & verification;
703  *   - PK: signature generation & verification;
704  *   - X509: certificate chain verification.
705  * - Adds mbedtls_ecdh_enable_restart() in the ECDH module.
706  * - Changes the behaviour of TLS 1.2 clients (not servers) when using the
707  *   ECDHE-ECDSA key exchange (not other key exchanges) to make all ECC
708  *   computations restartable:
709  *   - ECDH operations from the key exchange, only for Short Weierstrass
710  *     curves, only when MBEDTLS_USE_PSA_CRYPTO is not enabled.
711  *   - verification of the server's key exchange signature;
712  *   - verification of the server's certificate chain;
713  *   - generation of the client's signature if client authentication is used,
714  *     with an ECC key/certificate.
715  *
716  * \note  In the cases above, the usual SSL/TLS functions, such as
717  *        mbedtls_ssl_handshake(), can now return
718  *        MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS.
719  *
720  * \note  When this option and MBEDTLS_USE_PSA_CRYPTO are both enabled,
721  *        restartable operations in PK, X.509 and TLS (see above) are not
722  *        using PSA. On the other hand, ECDH computations in TLS are using
723  *        PSA, and are not restartable. These are temporary limitations that
724  *        should be lifted in the future.
725  *
726  * \note  This option only works with the default software implementation of
727  *        elliptic curve functionality. It is incompatible with
728  *        MBEDTLS_ECP_ALT, MBEDTLS_ECDH_XXX_ALT, MBEDTLS_ECDSA_XXX_ALT.
729  *
730  * Requires: MBEDTLS_ECP_C
731  *
732  * Uncomment this macro to enable restartable ECC computations.
733  */
734 #define MBEDTLS_ECP_RESTARTABLE
735 
736 /**
737  * \def MBEDTLS_ECDSA_DETERMINISTIC
738  *
739  * Enable deterministic ECDSA (RFC 6979).
740  * Standard ECDSA is "fragile" in the sense that lack of entropy when signing
741  * may result in a compromise of the long-term signing key. This is avoided by
742  * the deterministic variant.
743  *
744  * Requires: MBEDTLS_HMAC_DRBG_C, MBEDTLS_ECDSA_C
745  *
746  * Comment this macro to disable deterministic ECDSA.
747  */
748 //#define MBEDTLS_ECDSA_DETERMINISTIC
749 
750 /**
751  * \def MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
752  *
753  * Enable the PSK based ciphersuite modes in SSL / TLS.
754  *
755  * This enables the following ciphersuites (if other requisites are
756  * enabled as well):
757  *      MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384
758  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384
759  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA
760  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384
761  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384
762  *      MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256
763  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256
764  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA
765  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256
766  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256
767  */
768 //#define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
769 
770 /**
771  * \def MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
772  *
773  * Enable the DHE-PSK based ciphersuite modes in SSL / TLS.
774  *
775  * Requires: MBEDTLS_DHM_C
776  *
777  * This enables the following ciphersuites (if other requisites are
778  * enabled as well):
779  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
780  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
781  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA
782  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384
783  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
784  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
785  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
786  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA
787  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256
788  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
789  *
790  * \warning    Using DHE constitutes a security risk as it
791  *             is not possible to validate custom DH parameters.
792  *             If possible, it is recommended users should consider
793  *             preferring other methods of key exchange.
794  *             See dhm.h for more details.
795  *
796  */
797 //#define MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
798 
799 /**
800  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
801  *
802  * Enable the ECDHE-PSK based ciphersuite modes in SSL / TLS.
803  *
804  * Requires: MBEDTLS_ECDH_C
805  *
806  * This enables the following ciphersuites (if other requisites are
807  * enabled as well):
808  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384
809  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA
810  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
811  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256
812  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA
813  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
814  */
815 //#define MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
816 
817 /**
818  * \def MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
819  *
820  * Enable the RSA-PSK based ciphersuite modes in SSL / TLS.
821  *
822  * Requires: MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
823  *           MBEDTLS_X509_CRT_PARSE_C
824  *
825  * This enables the following ciphersuites (if other requisites are
826  * enabled as well):
827  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384
828  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384
829  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA
830  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384
831  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384
832  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256
833  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256
834  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA
835  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256
836  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256
837  */
838 //#define MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
839 
840 /**
841  * \def MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
842  *
843  * Enable the RSA-only based ciphersuite modes in SSL / TLS.
844  *
845  * Requires: MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
846  *           MBEDTLS_X509_CRT_PARSE_C
847  *
848  * This enables the following ciphersuites (if other requisites are
849  * enabled as well):
850  *      MBEDTLS_TLS_RSA_WITH_AES_256_GCM_SHA384
851  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA256
852  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA
853  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384
854  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
855  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
856  *      MBEDTLS_TLS_RSA_WITH_AES_128_GCM_SHA256
857  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA256
858  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA
859  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256
860  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
861  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
862  */
863 //#define MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
864 
865 /**
866  * \def MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
867  *
868  * Enable the DHE-RSA based ciphersuite modes in SSL / TLS.
869  *
870  * Requires: MBEDTLS_DHM_C, MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
871  *           MBEDTLS_X509_CRT_PARSE_C
872  *
873  * This enables the following ciphersuites (if other requisites are
874  * enabled as well):
875  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
876  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
877  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
878  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
879  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
880  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
881  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
882  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
883  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
884  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
885  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
886  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
887  *
888  * \warning    Using DHE constitutes a security risk as it
889  *             is not possible to validate custom DH parameters.
890  *             If possible, it is recommended users should consider
891  *             preferring other methods of key exchange.
892  *             See dhm.h for more details.
893  *
894  */
895 //#define MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
896 
897 /**
898  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
899  *
900  * Enable the ECDHE-RSA based ciphersuite modes in SSL / TLS.
901  *
902  * Requires: MBEDTLS_ECDH_C, MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
903  *           MBEDTLS_X509_CRT_PARSE_C
904  *
905  * This enables the following ciphersuites (if other requisites are
906  * enabled as well):
907  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
908  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
909  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
910  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
911  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
912  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
913  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
914  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
915  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
916  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
917  */
918 #define MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
919 
920 /**
921  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
922  *
923  * Enable the ECDHE-ECDSA based ciphersuite modes in SSL / TLS.
924  *
925  * Requires: MBEDTLS_ECDH_C, MBEDTLS_ECDSA_C, MBEDTLS_X509_CRT_PARSE_C,
926  *
927  * This enables the following ciphersuites (if other requisites are
928  * enabled as well):
929  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
930  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
931  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
932  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
933  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
934  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
935  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
936  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
937  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
938  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
939  */
940 #define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
941 
942 /**
943  * \def MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
944  *
945  * Enable the ECDH-ECDSA based ciphersuite modes in SSL / TLS.
946  *
947  * Requires: MBEDTLS_ECDH_C, MBEDTLS_ECDSA_C, MBEDTLS_X509_CRT_PARSE_C
948  *
949  * This enables the following ciphersuites (if other requisites are
950  * enabled as well):
951  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
952  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
953  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
954  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
955  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
956  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
957  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
958  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
959  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
960  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
961  */
962 //#define MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
963 
964 /**
965  * \def MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
966  *
967  * Enable the ECDH-RSA based ciphersuite modes in SSL / TLS.
968  *
969  * Requires: MBEDTLS_ECDH_C, MBEDTLS_RSA_C, MBEDTLS_X509_CRT_PARSE_C
970  *
971  * This enables the following ciphersuites (if other requisites are
972  * enabled as well):
973  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
974  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
975  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
976  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
977  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
978  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
979  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256
980  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384
981  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256
982  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384
983  */
984 //#define MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
985 
986 /**
987  * \def MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
988  *
989  * Enable the ECJPAKE based ciphersuite modes in SSL / TLS.
990  *
991  * \warning This is currently experimental. EC J-PAKE support is based on the
992  * Thread v1.0.0 specification; incompatible changes to the specification
993  * might still happen. For this reason, this is disabled by default.
994  *
995  * Requires: MBEDTLS_ECJPAKE_C
996  *           SHA-256 (via MD if present, or via PSA, see MBEDTLS_ECJPAKE_C)
997  *           MBEDTLS_ECP_DP_SECP256R1_ENABLED
998  *
999  * This enables the following ciphersuites (if other requisites are
1000  * enabled as well):
1001  *      MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8
1002  */
1003 //#define MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
1004 
1005 /**
1006  * \def MBEDTLS_PK_PARSE_EC_EXTENDED
1007  *
1008  * Enhance support for reading EC keys using variants of SEC1 not allowed by
1009  * RFC 5915 and RFC 5480.
1010  *
1011  * Currently this means parsing the SpecifiedECDomain choice of EC
1012  * parameters (only known groups are supported, not arbitrary domains, to
1013  * avoid validation issues).
1014  *
1015  * Disable if you only need to support RFC 5915 + 5480 key formats.
1016  */
1017 //#define MBEDTLS_PK_PARSE_EC_EXTENDED
1018 
1019 /**
1020  * \def MBEDTLS_ERROR_STRERROR_DUMMY
1021  *
1022  * Enable a dummy error function to make use of mbedtls_strerror() in
1023  * third party libraries easier when MBEDTLS_ERROR_C is disabled
1024  * (no effect when MBEDTLS_ERROR_C is enabled).
1025  *
1026  * You can safely disable this if MBEDTLS_ERROR_C is enabled, or if you're
1027  * not using mbedtls_strerror() or error_strerror() in your application.
1028  *
1029  * Disable if you run into name conflicts and want to really remove the
1030  * mbedtls_strerror()
1031  */
1032 #define MBEDTLS_ERROR_STRERROR_DUMMY
1033 
1034 /**
1035  * \def MBEDTLS_GENPRIME
1036  *
1037  * Enable the prime-number generation code.
1038  *
1039  * Requires: MBEDTLS_BIGNUM_C
1040  */
1041 #define MBEDTLS_GENPRIME
1042 
1043 /**
1044  * \def MBEDTLS_FS_IO
1045  *
1046  * Enable functions that use the filesystem.
1047  */
1048 #define MBEDTLS_FS_IO
1049 
1050 /**
1051  * \def MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
1052  *
1053  * Do not add default entropy sources in mbedtls_entropy_init().
1054  *
1055  * This is useful to have more control over the added entropy sources in an
1056  * application.
1057  *
1058  * Uncomment this macro to prevent loading of default entropy functions.
1059  */
1060 //#define MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
1061 
1062 /**
1063  * \def MBEDTLS_NO_PLATFORM_ENTROPY
1064  *
1065  * Do not use built-in platform entropy functions.
1066  * This is useful if your platform does not support
1067  * standards like the /dev/urandom or Windows CryptoAPI.
1068  *
1069  * Uncomment this macro to disable the built-in platform entropy functions.
1070  */
1071 //#define MBEDTLS_NO_PLATFORM_ENTROPY
1072 
1073 /**
1074  * \def MBEDTLS_ENTROPY_FORCE_SHA256
1075  *
1076  * Force the entropy accumulator to use a SHA-256 accumulator instead of the
1077  * default SHA-512 based one (if both are available).
1078  *
1079  * Requires: MBEDTLS_SHA256_C
1080  *
1081  * On 32-bit systems SHA-256 can be much faster than SHA-512. Use this option
1082  * if you have performance concerns.
1083  *
1084  * This option is only useful if both MBEDTLS_SHA256_C and
1085  * MBEDTLS_SHA512_C are defined. Otherwise the available hash module is used.
1086  */
1087 //#define MBEDTLS_ENTROPY_FORCE_SHA256
1088 
1089 /**
1090  * \def MBEDTLS_ENTROPY_NV_SEED
1091  *
1092  * Enable the non-volatile (NV) seed file-based entropy source.
1093  * (Also enables the NV seed read/write functions in the platform layer)
1094  *
1095  * This is crucial (if not required) on systems that do not have a
1096  * cryptographic entropy source (in hardware or kernel) available.
1097  *
1098  * Requires: MBEDTLS_ENTROPY_C, MBEDTLS_PLATFORM_C
1099  *
1100  * \note The read/write functions that are used by the entropy source are
1101  *       determined in the platform layer, and can be modified at runtime and/or
1102  *       compile-time depending on the flags (MBEDTLS_PLATFORM_NV_SEED_*) used.
1103  *
1104  * \note If you use the default implementation functions that read a seedfile
1105  *       with regular fopen(), please make sure you make a seedfile with the
1106  *       proper name (defined in MBEDTLS_PLATFORM_STD_NV_SEED_FILE) and at
1107  *       least MBEDTLS_ENTROPY_BLOCK_SIZE bytes in size that can be read from
1108  *       and written to or you will get an entropy source error! The default
1109  *       implementation will only use the first MBEDTLS_ENTROPY_BLOCK_SIZE
1110  *       bytes from the file.
1111  *
1112  * \note The entropy collector will write to the seed file before entropy is
1113  *       given to an external source, to update it.
1114  */
1115 //#define MBEDTLS_ENTROPY_NV_SEED
1116 
1117 /* MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
1118  *
1119  * Enable key identifiers that encode a key owner identifier.
1120  *
1121  * The owner of a key is identified by a value of type ::mbedtls_key_owner_id_t
1122  * which is currently hard-coded to be int32_t.
1123  *
1124  * Note that this option is meant for internal use only and may be removed
1125  * without notice.
1126  */
1127 //#define MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
1128 
1129 /**
1130  * \def MBEDTLS_MEMORY_DEBUG
1131  *
1132  * Enable debugging of buffer allocator memory issues. Automatically prints
1133  * (to stderr) all (fatal) messages on memory allocation issues. Enables
1134  * function for 'debug output' of allocated memory.
1135  *
1136  * Requires: MBEDTLS_MEMORY_BUFFER_ALLOC_C
1137  *
1138  * Uncomment this macro to let the buffer allocator print out error messages.
1139  */
1140 //#define MBEDTLS_MEMORY_DEBUG
1141 
1142 /**
1143  * \def MBEDTLS_MEMORY_BACKTRACE
1144  *
1145  * Include backtrace information with each allocated block.
1146  *
1147  * Requires: MBEDTLS_MEMORY_BUFFER_ALLOC_C
1148  *           GLIBC-compatible backtrace() and backtrace_symbols() support
1149  *
1150  * Uncomment this macro to include backtrace information
1151  */
1152 //#define MBEDTLS_MEMORY_BACKTRACE
1153 
1154 /**
1155  * \def MBEDTLS_PK_RSA_ALT_SUPPORT
1156  *
1157  * Support external private RSA keys (eg from a HSM) in the PK layer.
1158  *
1159  * Comment this macro to disable support for external private RSA keys.
1160  */
1161 #define MBEDTLS_PK_RSA_ALT_SUPPORT
1162 
1163 /**
1164  * \def MBEDTLS_PKCS1_V15
1165  *
1166  * Enable support for PKCS#1 v1.5 encoding.
1167  *
1168  * Requires: MBEDTLS_RSA_C
1169  *
1170  * This enables support for PKCS#1 v1.5 operations.
1171  */
1172 #define MBEDTLS_PKCS1_V15
1173 
1174 /**
1175  * \def MBEDTLS_PKCS1_V21
1176  *
1177  * Enable support for PKCS#1 v2.1 encoding.
1178  *
1179  * Requires: MBEDTLS_RSA_C and (MBEDTLS_MD_C or MBEDTLS_PSA_CRYPTO_C).
1180  *
1181  * \warning If building without MBEDTLS_MD_C, you must call psa_crypto_init()
1182  * before doing any PKCS#1 v2.1 operation.
1183  *
1184  * \warning When building with MBEDTLS_MD_C, all hashes used with this
1185  * need to be available as built-ins (that is, for SHA-256, MBEDTLS_SHA256_C,
1186  * etc.) as opposed to just PSA drivers. So far, PSA drivers are only used by
1187  * this module in builds where MBEDTLS_MD_C is disabled.
1188  *
1189  * This enables support for RSAES-OAEP and RSASSA-PSS operations.
1190  */
1191 #define MBEDTLS_PKCS1_V21
1192 
1193 /** \def MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS
1194  *
1195  * Enable support for platform built-in keys. If you enable this feature,
1196  * you must implement the function mbedtls_psa_platform_get_builtin_key().
1197  * See the documentation of that function for more information.
1198  *
1199  * Built-in keys are typically derived from a hardware unique key or
1200  * stored in a secure element.
1201  *
1202  * Requires: MBEDTLS_PSA_CRYPTO_C.
1203  *
1204  * \warning This interface is experimental and may change or be removed
1205  * without notice.
1206  */
1207 //#define MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS
1208 
1209 /** \def MBEDTLS_PSA_CRYPTO_CLIENT
1210  *
1211  * Enable support for PSA crypto client.
1212  *
1213  * \note This option allows to include the code necessary for a PSA
1214  *       crypto client when the PSA crypto implementation is not included in
1215  *       the library (MBEDTLS_PSA_CRYPTO_C disabled). The code included is the
1216  *       code to set and get PSA key attributes.
1217  *       The development of PSA drivers partially relying on the library to
1218  *       fulfill the hardware gaps is another possible usage of this option.
1219  *
1220  * \warning This interface is experimental and may change or be removed
1221  * without notice.
1222  */
1223 //#define MBEDTLS_PSA_CRYPTO_CLIENT
1224 
1225 /** \def MBEDTLS_PSA_CRYPTO_DRIVERS
1226  *
1227  * Enable support for the experimental PSA crypto driver interface.
1228  *
1229  * Requires: MBEDTLS_PSA_CRYPTO_C
1230  *
1231  * \warning This interface is experimental. We intend to maintain backward
1232  *          compatibility with application code that relies on drivers,
1233  *          but the driver interfaces may change without notice.
1234  */
1235 //#define MBEDTLS_PSA_CRYPTO_DRIVERS
1236 
1237 /** \def MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
1238  *
1239  * Make the PSA Crypto module use an external random generator provided
1240  * by a driver, instead of Mbed TLS's entropy and DRBG modules.
1241  *
1242  * \note This random generator must deliver random numbers with cryptographic
1243  *       quality and high performance. It must supply unpredictable numbers
1244  *       with a uniform distribution. The implementation of this function
1245  *       is responsible for ensuring that the random generator is seeded
1246  *       with sufficient entropy. If you have a hardware TRNG which is slow
1247  *       or delivers non-uniform output, declare it as an entropy source
1248  *       with mbedtls_entropy_add_source() instead of enabling this option.
1249  *
1250  * If you enable this option, you must configure the type
1251  * ::mbedtls_psa_external_random_context_t in psa/crypto_platform.h
1252  * and define a function called mbedtls_psa_external_get_random()
1253  * with the following prototype:
1254  * ```
1255  * psa_status_t mbedtls_psa_external_get_random(
1256  *     mbedtls_psa_external_random_context_t *context,
1257  *     uint8_t *output, size_t output_size, size_t *output_length);
1258  * );
1259  * ```
1260  * The \c context value is initialized to 0 before the first call.
1261  * The function must fill the \c output buffer with \p output_size bytes
1262  * of random data and set \c *output_length to \p output_size.
1263  *
1264  * Requires: MBEDTLS_PSA_CRYPTO_C
1265  *
1266  * \warning If you enable this option, code that uses the PSA cryptography
1267  *          interface will not use any of the entropy sources set up for
1268  *          the entropy module, nor the NV seed that MBEDTLS_ENTROPY_NV_SEED
1269  *          enables.
1270  *
1271  * \note This option is experimental and may be removed without notice.
1272  */
1273 //#define MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
1274 
1275 /**
1276  * \def MBEDTLS_PSA_CRYPTO_SPM
1277  *
1278  * When MBEDTLS_PSA_CRYPTO_SPM is defined, the code is built for SPM (Secure
1279  * Partition Manager) integration which separates the code into two parts: a
1280  * NSPE (Non-Secure Process Environment) and an SPE (Secure Process
1281  * Environment).
1282  *
1283  * Module:  library/psa_crypto.c
1284  * Requires: MBEDTLS_PSA_CRYPTO_C
1285  *
1286  */
1287 //#define MBEDTLS_PSA_CRYPTO_SPM
1288 
1289 /**
1290  * \def MBEDTLS_PSA_INJECT_ENTROPY
1291  *
1292  * Enable support for entropy injection at first boot. This feature is
1293  * required on systems that do not have a built-in entropy source (TRNG).
1294  * This feature is currently not supported on systems that have a built-in
1295  * entropy source.
1296  *
1297  * Requires: MBEDTLS_PSA_CRYPTO_STORAGE_C, MBEDTLS_ENTROPY_NV_SEED
1298  *
1299  */
1300 //#define MBEDTLS_PSA_INJECT_ENTROPY
1301 
1302 /**
1303  * \def MBEDTLS_RSA_NO_CRT
1304  *
1305  * Do not use the Chinese Remainder Theorem
1306  * for the RSA private operation.
1307  *
1308  * Uncomment this macro to disable the use of CRT in RSA.
1309  *
1310  */
1311 //#define MBEDTLS_RSA_NO_CRT
1312 
1313 /**
1314  * \def MBEDTLS_SELF_TEST
1315  *
1316  * Enable the checkup functions (*_self_test).
1317  */
1318 //#define MBEDTLS_SELF_TEST
1319 
1320 /**
1321  * \def MBEDTLS_SHA256_SMALLER
1322  *
1323  * Enable an implementation of SHA-256 that has lower ROM footprint but also
1324  * lower performance.
1325  *
1326  * The default implementation is meant to be a reasonable compromise between
1327  * performance and size. This version optimizes more aggressively for size at
1328  * the expense of performance. Eg on Cortex-M4 it reduces the size of
1329  * mbedtls_sha256_process() from ~2KB to ~0.5KB for a performance hit of about
1330  * 30%.
1331  *
1332  * Uncomment to enable the smaller implementation of SHA256.
1333  */
1334 //#define MBEDTLS_SHA256_SMALLER
1335 
1336 /**
1337  * \def MBEDTLS_SHA512_SMALLER
1338  *
1339  * Enable an implementation of SHA-512 that has lower ROM footprint but also
1340  * lower performance.
1341  *
1342  * Uncomment to enable the smaller implementation of SHA512.
1343  */
1344 //#define MBEDTLS_SHA512_SMALLER
1345 
1346 /**
1347  * \def MBEDTLS_SSL_ALL_ALERT_MESSAGES
1348  *
1349  * Enable sending of alert messages in case of encountered errors as per RFC.
1350  * If you choose not to send the alert messages, mbed TLS can still communicate
1351  * with other servers, only debugging of failures is harder.
1352  *
1353  * The advantage of not sending alert messages, is that no information is given
1354  * about reasons for failures thus preventing adversaries of gaining intel.
1355  *
1356  * Enable sending of all alert messages
1357  */
1358 #define MBEDTLS_SSL_ALL_ALERT_MESSAGES
1359 
1360 /**
1361  * \def MBEDTLS_SSL_DTLS_CONNECTION_ID
1362  *
1363  * Enable support for the DTLS Connection ID (CID) extension,
1364  * which allows to identify DTLS connections across changes
1365  * in the underlying transport. The CID functionality is described
1366  * in RFC 9146.
1367  *
1368  * Setting this option enables the SSL APIs `mbedtls_ssl_set_cid()`,
1369  * mbedtls_ssl_get_own_cid()`, `mbedtls_ssl_get_peer_cid()` and
1370  * `mbedtls_ssl_conf_cid()`. See the corresponding documentation for
1371  * more information.
1372  *
1373  * The maximum lengths of outgoing and incoming CIDs can be configured
1374  * through the options
1375  * - MBEDTLS_SSL_CID_OUT_LEN_MAX
1376  * - MBEDTLS_SSL_CID_IN_LEN_MAX.
1377  *
1378  * Requires: MBEDTLS_SSL_PROTO_DTLS
1379  *
1380  * Uncomment to enable the Connection ID extension.
1381  */
1382 // #define MBEDTLS_SSL_DTLS_CONNECTION_ID
1383 
1384 
1385 /**
1386  * \def MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT
1387  *
1388  * Defines whether RFC 9146 (default) or the legacy version
1389  * (version draft-ietf-tls-dtls-connection-id-05,
1390  * https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05)
1391  * is used.
1392  *
1393  * Set the value to 0 for the standard version, and
1394  * 1 for the legacy draft version.
1395  *
1396  * \deprecated Support for the legacy version of the DTLS
1397  *             Connection ID feature is deprecated. Please
1398  *             switch to the standardized version defined
1399  *             in RFC 9146 enabled by utilizing
1400  *             MBEDTLS_SSL_DTLS_CONNECTION_ID without use
1401  *             of MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT.
1402  *
1403  * Requires: MBEDTLS_SSL_DTLS_CONNECTION_ID
1404  */
1405 // #define MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT 0
1406 
1407 /**
1408  * \def MBEDTLS_SSL_ASYNC_PRIVATE
1409  *
1410  * Enable asynchronous external private key operations in SSL. This allows
1411  * you to configure an SSL connection to call an external cryptographic
1412  * module to perform private key operations instead of performing the
1413  * operation inside the library.
1414  *
1415  * Requires: MBEDTLS_X509_CRT_PARSE_C
1416  */
1417 //#define MBEDTLS_SSL_ASYNC_PRIVATE
1418 
1419 /**
1420  * \def MBEDTLS_SSL_CONTEXT_SERIALIZATION
1421  *
1422  * Enable serialization of the TLS context structures, through use of the
1423  * functions mbedtls_ssl_context_save() and mbedtls_ssl_context_load().
1424  *
1425  * This pair of functions allows one side of a connection to serialize the
1426  * context associated with the connection, then free or re-use that context
1427  * while the serialized state is persisted elsewhere, and finally deserialize
1428  * that state to a live context for resuming read/write operations on the
1429  * connection. From a protocol perspective, the state of the connection is
1430  * unaffected, in particular this is entirely transparent to the peer.
1431  *
1432  * Note: this is distinct from TLS session resumption, which is part of the
1433  * protocol and fully visible by the peer. TLS session resumption enables
1434  * establishing new connections associated to a saved session with shorter,
1435  * lighter handshakes, while context serialization is a local optimization in
1436  * handling a single, potentially long-lived connection.
1437  *
1438  * Enabling these APIs makes some SSL structures larger, as 64 extra bytes are
1439  * saved after the handshake to allow for more efficient serialization, so if
1440  * you don't need this feature you'll save RAM by disabling it.
1441  *
1442  * Requires: MBEDTLS_GCM_C or MBEDTLS_CCM_C or MBEDTLS_CHACHAPOLY_C
1443  *
1444  * Comment to disable the context serialization APIs.
1445  */
1446 #define MBEDTLS_SSL_CONTEXT_SERIALIZATION
1447 
1448 /**
1449  * \def MBEDTLS_SSL_DEBUG_ALL
1450  *
1451  * Enable the debug messages in SSL module for all issues.
1452  * Debug messages have been disabled in some places to prevent timing
1453  * attacks due to (unbalanced) debugging function calls.
1454  *
1455  * If you need all error reporting you should enable this during debugging,
1456  * but remove this for production servers that should log as well.
1457  *
1458  * Uncomment this macro to report all debug messages on errors introducing
1459  * a timing side-channel.
1460  *
1461  */
1462 //#define MBEDTLS_SSL_DEBUG_ALL
1463 
1464 /** \def MBEDTLS_SSL_ENCRYPT_THEN_MAC
1465  *
1466  * Enable support for Encrypt-then-MAC, RFC 7366.
1467  *
1468  * This allows peers that both support it to use a more robust protection for
1469  * ciphersuites using CBC, providing deep resistance against timing attacks
1470  * on the padding or underlying cipher.
1471  *
1472  * This only affects CBC ciphersuites, and is useless if none is defined.
1473  *
1474  * Requires: MBEDTLS_SSL_PROTO_TLS1_2
1475  *
1476  * Comment this macro to disable support for Encrypt-then-MAC
1477  */
1478 #define MBEDTLS_SSL_ENCRYPT_THEN_MAC
1479 
1480 /** \def MBEDTLS_SSL_EXTENDED_MASTER_SECRET
1481  *
1482  * Enable support for RFC 7627: Session Hash and Extended Master Secret
1483  * Extension.
1484  *
1485  * This was introduced as "the proper fix" to the Triple Handshake family of
1486  * attacks, but it is recommended to always use it (even if you disable
1487  * renegotiation), since it actually fixes a more fundamental issue in the
1488  * original SSL/TLS design, and has implications beyond Triple Handshake.
1489  *
1490  * Requires: MBEDTLS_SSL_PROTO_TLS1_2
1491  *
1492  * Comment this macro to disable support for Extended Master Secret.
1493  */
1494 #define MBEDTLS_SSL_EXTENDED_MASTER_SECRET
1495 
1496 /**
1497  * \def MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
1498  *
1499  * This option controls the availability of the API mbedtls_ssl_get_peer_cert()
1500  * giving access to the peer's certificate after completion of the handshake.
1501  *
1502  * Unless you need mbedtls_ssl_peer_cert() in your application, it is
1503  * recommended to disable this option for reduced RAM usage.
1504  *
1505  * \note If this option is disabled, mbedtls_ssl_get_peer_cert() is still
1506  *       defined, but always returns \c NULL.
1507  *
1508  * \note This option has no influence on the protection against the
1509  *       triple handshake attack. Even if it is disabled, Mbed TLS will
1510  *       still ensure that certificates do not change during renegotiation,
1511  *       for example by keeping a hash of the peer's certificate.
1512  *
1513  * \note This option is required if MBEDTLS_SSL_PROTO_TLS1_3 is set.
1514  *
1515  * Comment this macro to disable storing the peer's certificate
1516  * after the handshake.
1517  */
1518 #define MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
1519 
1520 /**
1521  * \def MBEDTLS_SSL_RENEGOTIATION
1522  *
1523  * Enable support for TLS renegotiation.
1524  *
1525  * The two main uses of renegotiation are (1) refresh keys on long-lived
1526  * connections and (2) client authentication after the initial handshake.
1527  * If you don't need renegotiation, it's probably better to disable it, since
1528  * it has been associated with security issues in the past and is easy to
1529  * misuse/misunderstand.
1530  *
1531  * Comment this to disable support for renegotiation.
1532  *
1533  * \note   Even if this option is disabled, both client and server are aware
1534  *         of the Renegotiation Indication Extension (RFC 5746) used to
1535  *         prevent the SSL renegotiation attack (see RFC 5746 Sect. 1).
1536  *         (See \c mbedtls_ssl_conf_legacy_renegotiation for the
1537  *          configuration of this extension).
1538  *
1539  */
1540 #define MBEDTLS_SSL_RENEGOTIATION
1541 
1542 /**
1543  * \def MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1544  *
1545  * Enable support for RFC 6066 max_fragment_length extension in SSL.
1546  *
1547  * Comment this macro to disable support for the max_fragment_length extension
1548  */
1549 #define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1550 
1551 /**
1552  * \def MBEDTLS_SSL_RECORD_SIZE_LIMIT
1553  *
1554  * Enable support for RFC 8449 record_size_limit extension in SSL (TLS 1.3 only).
1555  *
1556  * \warning This extension is currently in development and must NOT be used except
1557  *          for testing purposes.
1558  *
1559  * Requires: MBEDTLS_SSL_PROTO_TLS1_3
1560  *
1561  * Uncomment this macro to enable support for the record_size_limit extension
1562  */
1563 //#define MBEDTLS_SSL_RECORD_SIZE_LIMIT
1564 
1565 /**
1566  * \def MBEDTLS_SSL_PROTO_TLS1_2
1567  *
1568  * Enable support for TLS 1.2 (and DTLS 1.2 if DTLS is enabled).
1569  *
1570  * Requires: Without MBEDTLS_USE_PSA_CRYPTO: MBEDTLS_MD_C and
1571  *              (MBEDTLS_SHA1_C or MBEDTLS_SHA256_C or MBEDTLS_SHA512_C)
1572  *           With MBEDTLS_USE_PSA_CRYPTO:
1573  *              PSA_WANT_ALG_SHA_1 or PSA_WANT_ALG_SHA_256 or
1574  *              PSA_WANT_ALG_SHA_512
1575  *
1576  * \warning If building with MBEDTLS_USE_PSA_CRYPTO, you must call
1577  * psa_crypto_init() before doing any TLS operations.
1578  *
1579  * Comment this macro to disable support for TLS 1.2 / DTLS 1.2
1580  */
1581 #define MBEDTLS_SSL_PROTO_TLS1_2
1582 
1583 /**
1584  * \def MBEDTLS_SSL_PROTO_TLS1_3
1585  *
1586  * Enable support for TLS 1.3.
1587  *
1588  * \note The support for TLS 1.3 is not comprehensive yet, in particular
1589  *       pre-shared keys are not supported.
1590  *       See docs/architecture/tls13-support.md for a description of the TLS
1591  *       1.3 support that this option enables.
1592  *
1593  * Requires: MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
1594  * Requires: MBEDTLS_PSA_CRYPTO_C
1595  *
1596  * \note TLS 1.3 uses PSA crypto for cryptographic operations that are
1597  *       directly performed by TLS 1.3 code. As a consequence, you must
1598  *       call psa_crypto_init() before the first TLS 1.3 handshake.
1599  *
1600  * \note Cryptographic operations performed indirectly via another module
1601  *       (X.509, PK) or by code shared with TLS 1.2 (record protection,
1602  *       running handshake hash) only use PSA crypto if
1603  *       #MBEDTLS_USE_PSA_CRYPTO is enabled.
1604  *
1605  * Uncomment this macro to enable the support for TLS 1.3.
1606  */
1607 //#define MBEDTLS_SSL_PROTO_TLS1_3
1608 
1609 /**
1610  * \def MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
1611  *
1612  * Enable TLS 1.3 middlebox compatibility mode.
1613  *
1614  * As specified in Section D.4 of RFC 8446, TLS 1.3 offers a compatibility
1615  * mode to make a TLS 1.3 connection more likely to pass through middle boxes
1616  * expecting TLS 1.2 traffic.
1617  *
1618  * Turning on the compatibility mode comes at the cost of a few added bytes
1619  * on the wire, but it doesn't affect compatibility with TLS 1.3 implementations
1620  * that don't use it. Therefore, unless transmission bandwidth is critical and
1621  * you know that middlebox compatibility issues won't occur, it is therefore
1622  * recommended to set this option.
1623  *
1624  * Comment to disable compatibility mode for TLS 1.3. If
1625  * MBEDTLS_SSL_PROTO_TLS1_3 is not enabled, this option does not have any
1626  * effect on the build.
1627  *
1628  */
1629 //#define MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
1630 
1631 /**
1632  * \def MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ENABLED
1633  *
1634  * Enable TLS 1.3 PSK key exchange mode.
1635  *
1636  * Comment to disable support for the PSK key exchange mode in TLS 1.3. If
1637  * MBEDTLS_SSL_PROTO_TLS1_3 is not enabled, this option does not have any
1638  * effect on the build.
1639  *
1640  */
1641 #define MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ENABLED
1642 
1643 /**
1644  * \def MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED
1645  *
1646  * Enable TLS 1.3 ephemeral key exchange mode.
1647  *
1648  * Requires: MBEDTLS_ECDH_C, MBEDTLS_X509_CRT_PARSE_C, MBEDTLS_ECDSA_C or
1649  *           MBEDTLS_PKCS1_V21
1650  *
1651  * Comment to disable support for the ephemeral key exchange mode in TLS 1.3.
1652  * If MBEDTLS_SSL_PROTO_TLS1_3 is not enabled, this option does not have any
1653  * effect on the build.
1654  *
1655  */
1656 #define MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED
1657 
1658 /**
1659  * \def MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL_ENABLED
1660  *
1661  * Enable TLS 1.3 PSK ephemeral key exchange mode.
1662  *
1663  * Requires: MBEDTLS_ECDH_C
1664  *
1665  * Comment to disable support for the PSK ephemeral key exchange mode in
1666  * TLS 1.3. If MBEDTLS_SSL_PROTO_TLS1_3 is not enabled, this option does not
1667  * have any effect on the build.
1668  *
1669  */
1670 #define MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL_ENABLED
1671 
1672 /**
1673  * \def MBEDTLS_SSL_EARLY_DATA
1674  *
1675  * Enable support for RFC 8446 TLS 1.3 early data.
1676  *
1677  * Requires: MBEDTLS_SSL_SESSION_TICKETS and either
1678  *           MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ENABLED or
1679  *           MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL_ENABLED
1680  *
1681  * Comment this to disable support for early data. If MBEDTLS_SSL_PROTO_TLS1_3
1682  * is not enabled, this option does not have any effect on the build.
1683  *
1684  * This feature is experimental, not completed and thus not ready for
1685  * production.
1686  *
1687  */
1688 //#define MBEDTLS_SSL_EARLY_DATA
1689 
1690 /**
1691  * \def MBEDTLS_SSL_MAX_EARLY_DATA_SIZE
1692  *
1693  * The default maximum amount of 0-RTT data. See the documentation of
1694  * \c mbedtls_ssl_tls13_conf_max_early_data_size() for more information.
1695  *
1696  * It must be positive and smaller than UINT32_MAX.
1697  *
1698  * If MBEDTLS_SSL_EARLY_DATA is not defined, this default value does not
1699  * have any impact on the build.
1700  *
1701  * This feature is experimental, not completed and thus not ready for
1702  * production.
1703  *
1704  */
1705 #define MBEDTLS_SSL_MAX_EARLY_DATA_SIZE        1024
1706 
1707 /**
1708  * \def MBEDTLS_SSL_PROTO_DTLS
1709  *
1710  * Enable support for DTLS (all available versions).
1711  *
1712  * Enable this and MBEDTLS_SSL_PROTO_TLS1_2 to enable DTLS 1.2.
1713  *
1714  * Requires: MBEDTLS_SSL_PROTO_TLS1_2
1715  *
1716  * Comment this macro to disable support for DTLS
1717  */
1718 //#define MBEDTLS_SSL_PROTO_DTLS
1719 
1720 /**
1721  * \def MBEDTLS_SSL_ALPN
1722  *
1723  * Enable support for RFC 7301 Application Layer Protocol Negotiation.
1724  *
1725  * Comment this macro to disable support for ALPN.
1726  */
1727 #define MBEDTLS_SSL_ALPN
1728 
1729 /**
1730  * \def MBEDTLS_SSL_DTLS_ANTI_REPLAY
1731  *
1732  * Enable support for the anti-replay mechanism in DTLS.
1733  *
1734  * Requires: MBEDTLS_SSL_TLS_C
1735  *           MBEDTLS_SSL_PROTO_DTLS
1736  *
1737  * \warning Disabling this is often a security risk!
1738  * See mbedtls_ssl_conf_dtls_anti_replay() for details.
1739  *
1740  * Comment this to disable anti-replay in DTLS.
1741  */
1742 //#define MBEDTLS_SSL_DTLS_ANTI_REPLAY
1743 
1744 /**
1745  * \def MBEDTLS_SSL_DTLS_HELLO_VERIFY
1746  *
1747  * Enable support for HelloVerifyRequest on DTLS servers.
1748  *
1749  * This feature is highly recommended to prevent DTLS servers being used as
1750  * amplifiers in DoS attacks against other hosts. It should always be enabled
1751  * unless you know for sure amplification cannot be a problem in the
1752  * environment in which your server operates.
1753  *
1754  * \warning Disabling this can be a security risk! (see above)
1755  *
1756  * Requires: MBEDTLS_SSL_PROTO_DTLS
1757  *
1758  * Comment this to disable support for HelloVerifyRequest.
1759  */
1760 //#define MBEDTLS_SSL_DTLS_HELLO_VERIFY
1761 
1762 /**
1763  * \def MBEDTLS_SSL_DTLS_SRTP
1764  *
1765  * Enable support for negotiation of DTLS-SRTP (RFC 5764)
1766  * through the use_srtp extension.
1767  *
1768  * \note This feature provides the minimum functionality required
1769  * to negotiate the use of DTLS-SRTP and to allow the derivation of
1770  * the associated SRTP packet protection key material.
1771  * In particular, the SRTP packet protection itself, as well as the
1772  * demultiplexing of RTP and DTLS packets at the datagram layer
1773  * (see Section 5 of RFC 5764), are not handled by this feature.
1774  * Instead, after successful completion of a handshake negotiating
1775  * the use of DTLS-SRTP, the extended key exporter API
1776  * mbedtls_ssl_conf_export_keys_cb() should be used to implement
1777  * the key exporter described in Section 4.2 of RFC 5764 and RFC 5705
1778  * (this is implemented in the SSL example programs).
1779  * The resulting key should then be passed to an SRTP stack.
1780  *
1781  * Setting this option enables the runtime API
1782  * mbedtls_ssl_conf_dtls_srtp_protection_profiles()
1783  * through which the supported DTLS-SRTP protection
1784  * profiles can be configured. You must call this API at
1785  * runtime if you wish to negotiate the use of DTLS-SRTP.
1786  *
1787  * Requires: MBEDTLS_SSL_PROTO_DTLS
1788  *
1789  * Uncomment this to enable support for use_srtp extension.
1790  */
1791 //#define MBEDTLS_SSL_DTLS_SRTP
1792 
1793 /**
1794  * \def MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
1795  *
1796  * Enable server-side support for clients that reconnect from the same port.
1797  *
1798  * Some clients unexpectedly close the connection and try to reconnect using the
1799  * same source port. This needs special support from the server to handle the
1800  * new connection securely, as described in section 4.2.8 of RFC 6347. This
1801  * flag enables that support.
1802  *
1803  * Requires: MBEDTLS_SSL_DTLS_HELLO_VERIFY
1804  *
1805  * Comment this to disable support for clients reusing the source port.
1806  */
1807 //#define MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
1808 
1809 /**
1810  * \def MBEDTLS_SSL_SESSION_TICKETS
1811  *
1812  * Enable support for RFC 5077 session tickets in SSL.
1813  * Client-side, provides full support for session tickets (maintenance of a
1814  * session store remains the responsibility of the application, though).
1815  * Server-side, you also need to provide callbacks for writing and parsing
1816  * tickets, including authenticated encryption and key management. Example
1817  * callbacks are provided by MBEDTLS_SSL_TICKET_C.
1818  *
1819  * Comment this macro to disable support for SSL session tickets
1820  */
1821 #define MBEDTLS_SSL_SESSION_TICKETS
1822 
1823 /**
1824  * \def MBEDTLS_SSL_SERVER_NAME_INDICATION
1825  *
1826  * Enable support for RFC 6066 server name indication (SNI) in SSL.
1827  *
1828  * Requires: MBEDTLS_X509_CRT_PARSE_C
1829  *
1830  * Comment this macro to disable support for server name indication in SSL
1831  */
1832 #define MBEDTLS_SSL_SERVER_NAME_INDICATION
1833 
1834 /**
1835  * \def MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
1836  *
1837  * When this option is enabled, the SSL buffer will be resized automatically
1838  * based on the negotiated maximum fragment length in each direction.
1839  *
1840  * Requires: MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1841  */
1842 //#define MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
1843 
1844 /**
1845  * \def MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN
1846  *
1847  * Enable testing of the constant-flow nature of some sensitive functions with
1848  * clang's MemorySanitizer. This causes some existing tests to also test
1849  * this non-functional property of the code under test.
1850  *
1851  * This setting requires compiling with clang -fsanitize=memory. The test
1852  * suites can then be run normally.
1853  *
1854  * \warning This macro is only used for extended testing; it is not considered
1855  * part of the library's API, so it may change or disappear at any time.
1856  *
1857  * Uncomment to enable testing of the constant-flow nature of selected code.
1858  */
1859 //#define MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN
1860 
1861 /**
1862  * \def MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND
1863  *
1864  * Enable testing of the constant-flow nature of some sensitive functions with
1865  * valgrind's memcheck tool. This causes some existing tests to also test
1866  * this non-functional property of the code under test.
1867  *
1868  * This setting requires valgrind headers for building, and is only useful for
1869  * testing if the tests suites are run with valgrind's memcheck. This can be
1870  * done for an individual test suite with 'valgrind ./test_suite_xxx', or when
1871  * using CMake, this can be done for all test suites with 'make memcheck'.
1872  *
1873  * \warning This macro is only used for extended testing; it is not considered
1874  * part of the library's API, so it may change or disappear at any time.
1875  *
1876  * Uncomment to enable testing of the constant-flow nature of selected code.
1877  */
1878 //#define MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND
1879 
1880 /**
1881  * \def MBEDTLS_TEST_HOOKS
1882  *
1883  * Enable features for invasive testing such as introspection functions and
1884  * hooks for fault injection. This enables additional unit tests.
1885  *
1886  * Merely enabling this feature should not change the behavior of the product.
1887  * It only adds new code, and new branching points where the default behavior
1888  * is the same as when this feature is disabled.
1889  * However, this feature increases the attack surface: there is an added
1890  * risk of vulnerabilities, and more gadgets that can make exploits easier.
1891  * Therefore this feature must never be enabled in production.
1892  *
1893  * See `docs/architecture/testing/mbed-crypto-invasive-testing.md` for more
1894  * information.
1895  *
1896  * Uncomment to enable invasive tests.
1897  */
1898 //#define MBEDTLS_TEST_HOOKS
1899 
1900 /**
1901  * \def MBEDTLS_THREADING_ALT
1902  *
1903  * Provide your own alternate threading implementation.
1904  *
1905  * Requires: MBEDTLS_THREADING_C
1906  *
1907  * Uncomment this to allow your own alternate threading implementation.
1908  */
1909 //#define MBEDTLS_THREADING_ALT
1910 
1911 /**
1912  * \def MBEDTLS_THREADING_PTHREAD
1913  *
1914  * Enable the pthread wrapper layer for the threading layer.
1915  *
1916  * Requires: MBEDTLS_THREADING_C
1917  *
1918  * Uncomment this to enable pthread mutexes.
1919  */
1920 //#define MBEDTLS_THREADING_PTHREAD
1921 
1922 /**
1923  * \def MBEDTLS_USE_PSA_CRYPTO
1924  *
1925  * Make the X.509 and TLS library use PSA for cryptographic operations, and
1926  * enable new APIs for using keys handled by PSA Crypto.
1927  *
1928  * \note Development of this option is currently in progress, and parts of Mbed
1929  * TLS's X.509 and TLS modules are not ported to PSA yet. However, these parts
1930  * will still continue to work as usual, so enabling this option should not
1931  * break backwards compatibility.
1932  *
1933  * \note See docs/use-psa-crypto.md for a complete description of what this
1934  * option currently does, and of parts that are not affected by it so far.
1935  *
1936  * \warning If you enable this option, you need to call `psa_crypto_init()`
1937  * before calling any function from the SSL/TLS, X.509 or PK modules.
1938  *
1939  * Requires: MBEDTLS_PSA_CRYPTO_C.
1940  *
1941  * Uncomment this to enable internal use of PSA Crypto and new associated APIs.
1942  */
1943 //#define MBEDTLS_USE_PSA_CRYPTO
1944 
1945 /**
1946  * \def MBEDTLS_PSA_CRYPTO_CONFIG
1947  *
1948  * This setting allows support for cryptographic mechanisms through the PSA
1949  * API to be configured separately from support through the mbedtls API.
1950  *
1951  * When this option is disabled, the PSA API exposes the cryptographic
1952  * mechanisms that can be implemented on top of the `mbedtls_xxx` API
1953  * configured with `MBEDTLS_XXX` symbols.
1954  *
1955  * When this option is enabled, the PSA API exposes the cryptographic
1956  * mechanisms requested by the `PSA_WANT_XXX` symbols defined in
1957  * include/psa/crypto_config.h. The corresponding `MBEDTLS_XXX` settings are
1958  * automatically enabled if required (i.e. if no PSA driver provides the
1959  * mechanism). You may still freely enable additional `MBEDTLS_XXX` symbols
1960  * in mbedtls_config.h.
1961  *
1962  * If the symbol #MBEDTLS_PSA_CRYPTO_CONFIG_FILE is defined, it specifies
1963  * an alternative header to include instead of include/psa/crypto_config.h.
1964  *
1965  * This feature is still experimental and is not ready for production since
1966  * it is not completed.
1967  */
1968 //#define MBEDTLS_PSA_CRYPTO_CONFIG
1969 
1970 /**
1971  * \def MBEDTLS_VERSION_FEATURES
1972  *
1973  * Allow run-time checking of compile-time enabled features. Thus allowing users
1974  * to check at run-time if the library is for instance compiled with threading
1975  * support via mbedtls_version_check_feature().
1976  *
1977  * Requires: MBEDTLS_VERSION_C
1978  *
1979  * Comment this to disable run-time checking and save ROM space
1980  */
1981 //#define MBEDTLS_VERSION_FEATURES
1982 
1983 /**
1984  * \def MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK
1985  *
1986  * If set, this enables the X.509 API `mbedtls_x509_crt_verify_with_ca_cb()`
1987  * and the SSL API `mbedtls_ssl_conf_ca_cb()` which allow users to configure
1988  * the set of trusted certificates through a callback instead of a linked
1989  * list.
1990  *
1991  * This is useful for example in environments where a large number of trusted
1992  * certificates is present and storing them in a linked list isn't efficient
1993  * enough, or when the set of trusted certificates changes frequently.
1994  *
1995  * See the documentation of `mbedtls_x509_crt_verify_with_ca_cb()` and
1996  * `mbedtls_ssl_conf_ca_cb()` for more information.
1997  *
1998  * Requires: MBEDTLS_X509_CRT_PARSE_C
1999  *
2000  * Uncomment to enable trusted certificate callbacks.
2001  */
2002 //#define MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK
2003 
2004 /**
2005  * \def MBEDTLS_X509_REMOVE_INFO
2006  *
2007  * Disable mbedtls_x509_*_info() and related APIs.
2008  *
2009  * Uncomment to omit mbedtls_x509_*_info(), as well as mbedtls_debug_print_crt()
2010  * and other functions/constants only used by these functions, thus reducing
2011  * the code footprint by several KB.
2012  */
2013 //#define MBEDTLS_X509_REMOVE_INFO
2014 
2015 /**
2016  * \def MBEDTLS_X509_RSASSA_PSS_SUPPORT
2017  *
2018  * Enable parsing and verification of X.509 certificates, CRLs and CSRS
2019  * signed with RSASSA-PSS (aka PKCS#1 v2.1).
2020  *
2021  * Comment this macro to disallow using RSASSA-PSS in certificates.
2022  */
2023 //#define MBEDTLS_X509_RSASSA_PSS_SUPPORT
2024 /** \} name SECTION: mbed TLS feature support */
2025 
2026 /**
2027  * \name SECTION: mbed TLS modules
2028  *
2029  * This section enables or disables entire modules in mbed TLS
2030  * \{
2031  */
2032 
2033 /**
2034  * \def MBEDTLS_AESNI_C
2035  *
2036  * Enable AES-NI support on x86-64 or x86-32.
2037  *
2038  * \note AESNI is only supported with certain compilers and target options:
2039  * - Visual Studio 2013: supported.
2040  * - GCC, x86-64, target not explicitly supporting AESNI:
2041  *   requires MBEDTLS_HAVE_ASM.
2042  * - GCC, x86-32, target not explicitly supporting AESNI:
2043  *   not supported.
2044  * - GCC, x86-64 or x86-32, target supporting AESNI: supported.
2045  *   For this assembly-less implementation, you must currently compile
2046  *   `library/aesni.c` and `library/aes.c` with machine options to enable
2047  *   SSE2 and AESNI instructions: `gcc -msse2 -maes -mpclmul` or
2048  *   `clang -maes -mpclmul`.
2049  * - Non-x86 targets: this option is silently ignored.
2050  * - Other compilers: this option is silently ignored.
2051  *
2052  * \note
2053  * Above, "GCC" includes compatible compilers such as Clang.
2054  * The limitations on target support are likely to be relaxed in the future.
2055  *
2056  * Module:  library/aesni.c
2057  * Caller:  library/aes.c
2058  *
2059  * Requires: MBEDTLS_HAVE_ASM (on some platforms, see note)
2060  *
2061  * This modules adds support for the AES-NI instructions on x86.
2062  */
2063 //#define MBEDTLS_AESNI_C
2064 
2065 /**
2066  * \def MBEDTLS_AESCE_C
2067  *
2068  * Enable AES cryptographic extension support on 64-bit Arm.
2069  *
2070  * Module:  library/aesce.c
2071  * Caller:  library/aes.c
2072  *
2073  * Requires: MBEDTLS_HAVE_ASM, MBEDTLS_AES_C
2074  *
2075  * \warning Runtime detection only works on Linux. For non-Linux operating
2076  *          system, Armv8-A Cryptographic Extensions must be supported by
2077  *          the CPU when this option is enabled.
2078  *
2079  * This module adds support for the AES Armv8-A Cryptographic Extensions on Aarch64 systems.
2080  */
2081 // #define MBEDTLS_AESCE_C
2082 
2083 /**
2084  * \def MBEDTLS_AES_C
2085  *
2086  * Enable the AES block cipher.
2087  *
2088  * Module:  library/aes.c
2089  * Caller:  library/cipher.c
2090  *          library/pem.c
2091  *          library/ctr_drbg.c
2092  *
2093  * This module enables the following ciphersuites (if other requisites are
2094  * enabled as well):
2095  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
2096  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
2097  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
2098  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
2099  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
2100  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
2101  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
2102  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
2103  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
2104  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
2105  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
2106  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
2107  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
2108  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
2109  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
2110  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
2111  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
2112  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
2113  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
2114  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
2115  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
2116  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
2117  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
2118  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
2119  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
2120  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
2121  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
2122  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
2123  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
2124  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
2125  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
2126  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384
2127  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
2128  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA
2129  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA
2130  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
2131  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256
2132  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
2133  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA
2134  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA
2135  *      MBEDTLS_TLS_RSA_WITH_AES_256_GCM_SHA384
2136  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA256
2137  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA
2138  *      MBEDTLS_TLS_RSA_WITH_AES_128_GCM_SHA256
2139  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA256
2140  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA
2141  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384
2142  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384
2143  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA
2144  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256
2145  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256
2146  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA
2147  *      MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384
2148  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384
2149  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA
2150  *      MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256
2151  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256
2152  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA
2153  *
2154  * PEM_PARSE uses AES for decrypting encrypted keys.
2155  */
2156 #define MBEDTLS_AES_C
2157 
2158 /**
2159  * \def MBEDTLS_ASN1_PARSE_C
2160  *
2161  * Enable the generic ASN1 parser.
2162  *
2163  * Module:  library/asn1.c
2164  * Caller:  library/x509.c
2165  *          library/dhm.c
2166  *          library/pkcs12.c
2167  *          library/pkcs5.c
2168  *          library/pkparse.c
2169  */
2170 #define MBEDTLS_ASN1_PARSE_C
2171 
2172 /**
2173  * \def MBEDTLS_ASN1_WRITE_C
2174  *
2175  * Enable the generic ASN1 writer.
2176  *
2177  * Module:  library/asn1write.c
2178  * Caller:  library/ecdsa.c
2179  *          library/pkwrite.c
2180  *          library/x509_create.c
2181  *          library/x509write_crt.c
2182  *          library/x509write_csr.c
2183  */
2184 #define MBEDTLS_ASN1_WRITE_C
2185 
2186 /**
2187  * \def MBEDTLS_BASE64_C
2188  *
2189  * Enable the Base64 module.
2190  *
2191  * Module:  library/base64.c
2192  * Caller:  library/pem.c
2193  *
2194  * This module is required for PEM support (required by X.509).
2195  */
2196 #define MBEDTLS_BASE64_C
2197 
2198 /**
2199  * \def MBEDTLS_BIGNUM_C
2200  *
2201  * Enable the multi-precision integer library.
2202  *
2203  * Module:  library/bignum.c
2204  *          library/bignum_core.c
2205  *          library/bignum_mod.c
2206  *          library/bignum_mod_raw.c
2207  * Caller:  library/dhm.c
2208  *          library/ecp.c
2209  *          library/ecdsa.c
2210  *          library/rsa.c
2211  *          library/rsa_alt_helpers.c
2212  *          library/ssl_tls.c
2213  *
2214  * This module is required for RSA, DHM and ECC (ECDH, ECDSA) support.
2215  */
2216 #define MBEDTLS_BIGNUM_C
2217 
2218 /**
2219  * \def MBEDTLS_CAMELLIA_C
2220  *
2221  * Enable the Camellia block cipher.
2222  *
2223  * Module:  library/camellia.c
2224  * Caller:  library/cipher.c
2225  *
2226  * This module enables the following ciphersuites (if other requisites are
2227  * enabled as well):
2228  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
2229  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
2230  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256
2231  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384
2232  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
2233  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
2234  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256
2235  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384
2236  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
2237  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
2238  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
2239  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
2240  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
2241  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
2242  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
2243  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
2244  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
2245  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
2246  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
2247  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
2248  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
2249  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
2250  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384
2251  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
2252  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
2253  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256
2254  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
2255  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
2256  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384
2257  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
2258  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
2259  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256
2260  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
2261  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
2262  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384
2263  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384
2264  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256
2265  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256
2266  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384
2267  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384
2268  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256
2269  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256
2270  */
2271 //#define MBEDTLS_CAMELLIA_C
2272 
2273 /**
2274  * \def MBEDTLS_ARIA_C
2275  *
2276  * Enable the ARIA block cipher.
2277  *
2278  * Module:  library/aria.c
2279  * Caller:  library/cipher.c
2280  *
2281  * This module enables the following ciphersuites (if other requisites are
2282  * enabled as well):
2283  *
2284  *      MBEDTLS_TLS_RSA_WITH_ARIA_128_CBC_SHA256
2285  *      MBEDTLS_TLS_RSA_WITH_ARIA_256_CBC_SHA384
2286  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256
2287  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384
2288  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256
2289  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384
2290  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_CBC_SHA256
2291  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_CBC_SHA384
2292  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256
2293  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384
2294  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_CBC_SHA256
2295  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_CBC_SHA384
2296  *      MBEDTLS_TLS_RSA_WITH_ARIA_128_GCM_SHA256
2297  *      MBEDTLS_TLS_RSA_WITH_ARIA_256_GCM_SHA384
2298  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256
2299  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384
2300  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256
2301  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384
2302  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_GCM_SHA256
2303  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_GCM_SHA384
2304  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256
2305  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384
2306  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_GCM_SHA256
2307  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_GCM_SHA384
2308  *      MBEDTLS_TLS_PSK_WITH_ARIA_128_CBC_SHA256
2309  *      MBEDTLS_TLS_PSK_WITH_ARIA_256_CBC_SHA384
2310  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_CBC_SHA256
2311  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_CBC_SHA384
2312  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_CBC_SHA256
2313  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_CBC_SHA384
2314  *      MBEDTLS_TLS_PSK_WITH_ARIA_128_GCM_SHA256
2315  *      MBEDTLS_TLS_PSK_WITH_ARIA_256_GCM_SHA384
2316  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_GCM_SHA256
2317  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_GCM_SHA384
2318  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_GCM_SHA256
2319  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_GCM_SHA384
2320  *      MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256
2321  *      MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384
2322  */
2323 #define MBEDTLS_ARIA_C
2324 
2325 /**
2326  * \def MBEDTLS_CCM_C
2327  *
2328  * Enable the Counter with CBC-MAC (CCM) mode for 128-bit block cipher.
2329  *
2330  * Module:  library/ccm.c
2331  *
2332  * Requires: MBEDTLS_CIPHER_C, MBEDTLS_AES_C or MBEDTLS_CAMELLIA_C or
2333  *                             MBEDTLS_ARIA_C
2334  *
2335  * This module enables the AES-CCM ciphersuites, if other requisites are
2336  * enabled as well.
2337  */
2338 //#define MBEDTLS_CCM_C
2339 
2340 /**
2341  * \def MBEDTLS_CHACHA20_C
2342  *
2343  * Enable the ChaCha20 stream cipher.
2344  *
2345  * Module:  library/chacha20.c
2346  */
2347 #define MBEDTLS_CHACHA20_C
2348 
2349 /**
2350  * \def MBEDTLS_CHACHAPOLY_C
2351  *
2352  * Enable the ChaCha20-Poly1305 AEAD algorithm.
2353  *
2354  * Module:  library/chachapoly.c
2355  *
2356  * This module requires: MBEDTLS_CHACHA20_C, MBEDTLS_POLY1305_C
2357  */
2358 #define MBEDTLS_CHACHAPOLY_C
2359 
2360 /**
2361  * \def MBEDTLS_CIPHER_C
2362  *
2363  * Enable the generic cipher layer.
2364  *
2365  * Module:  library/cipher.c
2366  * Caller:  library/ccm.c
2367  *          library/cmac.c
2368  *          library/gcm.c
2369  *          library/nist_kw.c
2370  *          library/pkcs12.c
2371  *          library/pkcs5.c
2372  *          library/psa_crypto_aead.c
2373  *          library/psa_crypto_mac.c
2374  *          library/ssl_ciphersuites.c
2375  *          library/ssl_msg.c
2376  *          library/ssl_ticket.c (unless MBEDTLS_USE_PSA_CRYPTO is enabled)
2377  *
2378  * Uncomment to enable generic cipher wrappers.
2379  */
2380 #define MBEDTLS_CIPHER_C
2381 
2382 /**
2383  * \def MBEDTLS_CMAC_C
2384  *
2385  * Enable the CMAC (Cipher-based Message Authentication Code) mode for block
2386  * ciphers.
2387  *
2388  * \note When #MBEDTLS_CMAC_ALT is active, meaning that the underlying
2389  *       implementation of the CMAC algorithm is provided by an alternate
2390  *       implementation, that alternate implementation may opt to not support
2391  *       AES-192 or 3DES as underlying block ciphers for the CMAC operation.
2392  *
2393  * Module:  library/cmac.c
2394  *
2395  * Requires: MBEDTLS_CIPHER_C, MBEDTLS_AES_C or MBEDTLS_DES_C
2396  *
2397  */
2398 #define MBEDTLS_CMAC_C
2399 
2400 /**
2401  * \def MBEDTLS_CTR_DRBG_C
2402  *
2403  * Enable the CTR_DRBG AES-based random generator.
2404  * The CTR_DRBG generator uses AES-256 by default.
2405  * To use AES-128 instead, enable \c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY above.
2406  *
2407  * \note To achieve a 256-bit security strength with CTR_DRBG,
2408  *       you must use AES-256 *and* use sufficient entropy.
2409  *       See ctr_drbg.h for more details.
2410  *
2411  * Module:  library/ctr_drbg.c
2412  * Caller:
2413  *
2414  * Requires: MBEDTLS_AES_C
2415  *
2416  * This module provides the CTR_DRBG AES random number generator.
2417  */
2418 #define MBEDTLS_CTR_DRBG_C
2419 
2420 /**
2421  * \def MBEDTLS_DEBUG_C
2422  *
2423  * Enable the debug functions.
2424  *
2425  * Module:  library/debug.c
2426  * Caller:  library/ssl_msg.c
2427  *          library/ssl_tls.c
2428  *          library/ssl_tls12_*.c
2429  *          library/ssl_tls13_*.c
2430  *
2431  * This module provides debugging functions.
2432  */
2433 //#define MBEDTLS_DEBUG_C
2434 
2435 /**
2436  * \def MBEDTLS_DES_C
2437  *
2438  * Enable the DES block cipher.
2439  *
2440  * Module:  library/des.c
2441  * Caller:  library/pem.c
2442  *          library/cipher.c
2443  *
2444  * PEM_PARSE uses DES/3DES for decrypting encrypted keys.
2445  *
2446  * \warning   DES/3DES are considered weak ciphers and their use constitutes a
2447  *            security risk. We recommend considering stronger ciphers instead.
2448  */
2449 #define MBEDTLS_DES_C
2450 
2451 /**
2452  * \def MBEDTLS_DHM_C
2453  *
2454  * Enable the Diffie-Hellman-Merkle module.
2455  *
2456  * Module:  library/dhm.c
2457  * Caller:  library/ssl_tls.c
2458  *          library/ssl*_client.c
2459  *          library/ssl*_server.c
2460  *
2461  * This module is used by the following key exchanges:
2462  *      DHE-RSA, DHE-PSK
2463  *
2464  * \warning    Using DHE constitutes a security risk as it
2465  *             is not possible to validate custom DH parameters.
2466  *             If possible, it is recommended users should consider
2467  *             preferring other methods of key exchange.
2468  *             See dhm.h for more details.
2469  *
2470  */
2471 //#define MBEDTLS_DHM_C
2472 
2473 /**
2474  * \def MBEDTLS_ECDH_C
2475  *
2476  * Enable the elliptic curve Diffie-Hellman library.
2477  *
2478  * Module:  library/ecdh.c
2479  * Caller:  library/psa_crypto.c
2480  *          library/ssl_tls.c
2481  *          library/ssl*_client.c
2482  *          library/ssl*_server.c
2483  *
2484  * This module is used by the following key exchanges:
2485  *      ECDHE-ECDSA, ECDHE-RSA, DHE-PSK
2486  *
2487  * Requires: MBEDTLS_ECP_C
2488  */
2489 #define MBEDTLS_ECDH_C
2490 
2491 /**
2492  * \def MBEDTLS_ECDSA_C
2493  *
2494  * Enable the elliptic curve DSA library.
2495  *
2496  * Module:  library/ecdsa.c
2497  * Caller:
2498  *
2499  * This module is used by the following key exchanges:
2500  *      ECDHE-ECDSA
2501  *
2502  * Requires: MBEDTLS_ECP_C, MBEDTLS_ASN1_WRITE_C, MBEDTLS_ASN1_PARSE_C,
2503  *           and at least one MBEDTLS_ECP_DP_XXX_ENABLED for a
2504  *           short Weierstrass curve.
2505  */
2506 #define MBEDTLS_ECDSA_C
2507 
2508 /**
2509  * \def MBEDTLS_ECJPAKE_C
2510  *
2511  * Enable the elliptic curve J-PAKE library.
2512  *
2513  * \note EC J-PAKE support is based on the Thread v1.0.0 specification.
2514  *       It has not been reviewed for compliance with newer standards such as
2515  *       Thread v1.1 or RFC 8236.
2516  *
2517  * Module:  library/ecjpake.c
2518  * Caller:
2519  *
2520  * This module is used by the following key exchanges:
2521  *      ECJPAKE
2522  *
2523  * Requires: MBEDTLS_ECP_C and either MBEDTLS_MD_C or MBEDTLS_PSA_CRYPTO_C
2524  *
2525  * \warning If building without MBEDTLS_MD_C, you must call psa_crypto_init()
2526  * before doing any EC J-PAKE operations.
2527  *
2528  * \warning When building with MBEDTLS_MD_C, all hashes used with this
2529  * need to be available as built-ins (that is, for SHA-256, MBEDTLS_SHA256_C,
2530  * etc.) as opposed to just PSA drivers. So far, PSA drivers are only used by
2531  * this module in builds where MBEDTLS_MD_C is disabled.
2532  */
2533 #define MBEDTLS_ECJPAKE_C
2534 
2535 /**
2536  * \def MBEDTLS_ECP_C
2537  *
2538  * Enable the elliptic curve over GF(p) library.
2539  *
2540  * Module:  library/ecp.c
2541  * Caller:  library/ecdh.c
2542  *          library/ecdsa.c
2543  *          library/ecjpake.c
2544  *
2545  * Requires: MBEDTLS_BIGNUM_C and at least one MBEDTLS_ECP_DP_XXX_ENABLED
2546  */
2547 #define MBEDTLS_ECP_C
2548 
2549 /**
2550  * \def MBEDTLS_ENTROPY_C
2551  *
2552  * Enable the platform-specific entropy code.
2553  *
2554  * Module:  library/entropy.c
2555  * Caller:
2556  *
2557  * Requires: MBEDTLS_SHA512_C or MBEDTLS_SHA256_C
2558  *
2559  * This module provides a generic entropy pool
2560  */
2561 #define MBEDTLS_ENTROPY_C
2562 
2563 /**
2564  * \def MBEDTLS_ERROR_C
2565  *
2566  * Enable error code to error string conversion.
2567  *
2568  * Module:  library/error.c
2569  * Caller:
2570  *
2571  * This module enables mbedtls_strerror().
2572  */
2573 //#define MBEDTLS_ERROR_C
2574 
2575 /**
2576  * \def MBEDTLS_GCM_C
2577  *
2578  * Enable the Galois/Counter Mode (GCM).
2579  *
2580  * Module:  library/gcm.c
2581  *
2582  * Requires: MBEDTLS_CIPHER_C, MBEDTLS_AES_C or MBEDTLS_CAMELLIA_C or
2583  *                             MBEDTLS_ARIA_C
2584  *
2585  * This module enables the AES-GCM and CAMELLIA-GCM ciphersuites, if other
2586  * requisites are enabled as well.
2587  */
2588 #define MBEDTLS_GCM_C
2589 
2590 /**
2591  * \def MBEDTLS_HKDF_C
2592  *
2593  * Enable the HKDF algorithm (RFC 5869).
2594  *
2595  * Module:  library/hkdf.c
2596  * Caller:
2597  *
2598  * Requires: MBEDTLS_MD_C
2599  *
2600  * This module adds support for the Hashed Message Authentication Code
2601  * (HMAC)-based key derivation function (HKDF).
2602  */
2603 #define MBEDTLS_HKDF_C
2604 
2605 /**
2606  * \def MBEDTLS_HMAC_DRBG_C
2607  *
2608  * Enable the HMAC_DRBG random generator.
2609  *
2610  * Module:  library/hmac_drbg.c
2611  * Caller:
2612  *
2613  * Requires: MBEDTLS_MD_C
2614  *
2615  * Uncomment to enable the HMAC_DRBG random number generator.
2616  */
2617 //#define MBEDTLS_HMAC_DRBG_C
2618 
2619 /**
2620  * \def MBEDTLS_LMS_C
2621  *
2622  * Enable the LMS stateful-hash asymmetric signature algorithm.
2623  *
2624  * Module:  library/lms.c
2625  * Caller:
2626  *
2627  * Requires: MBEDTLS_PSA_CRYPTO_C
2628  *
2629  * Uncomment to enable the LMS verification algorithm and public key operations.
2630  */
2631 #define MBEDTLS_LMS_C
2632 
2633 /**
2634  * \def MBEDTLS_LMS_PRIVATE
2635  *
2636  * Enable LMS private-key operations and signing code. Functions enabled by this
2637  * option are experimental, and should not be used in production.
2638  *
2639  * Requires: MBEDTLS_LMS_C
2640  *
2641  * Uncomment to enable the LMS signature algorithm and private key operations.
2642  */
2643 //#define MBEDTLS_LMS_PRIVATE
2644 
2645 /**
2646  * \def MBEDTLS_NIST_KW_C
2647  *
2648  * Enable the Key Wrapping mode for 128-bit block ciphers,
2649  * as defined in NIST SP 800-38F. Only KW and KWP modes
2650  * are supported. At the moment, only AES is approved by NIST.
2651  *
2652  * Module:  library/nist_kw.c
2653  *
2654  * Requires: MBEDTLS_AES_C and MBEDTLS_CIPHER_C
2655  */
2656 #define MBEDTLS_NIST_KW_C
2657 
2658 /**
2659  * \def MBEDTLS_MD_C
2660  *
2661  * Enable the generic layer for message digest (hashing) and HMAC.
2662  *
2663  * Requires: one of: MBEDTLS_MD5_C, MBEDTLS_RIPEMD160_C, MBEDTLS_SHA1_C,
2664  *                   MBEDTLS_SHA224_C, MBEDTLS_SHA256_C, MBEDTLS_SHA384_C,
2665  *                   MBEDTLS_SHA512_C.
2666  * Module:  library/md.c
2667  * Caller:  library/constant_time.c
2668  *          library/ecdsa.c
2669  *          library/ecjpake.c
2670  *          library/hkdf.c
2671  *          library/hmac_drbg.c
2672  *          library/pk.c
2673  *          library/pkcs5.c
2674  *          library/pkcs12.c
2675  *          library/psa_crypto_ecp.c
2676  *          library/psa_crypto_rsa.c
2677  *          library/rsa.c
2678  *          library/ssl_cookie.c
2679  *          library/ssl_msg.c
2680  *          library/ssl_tls.c
2681  *          library/x509.c
2682  *          library/x509_crt.c
2683  *          library/x509write_crt.c
2684  *          library/x509write_csr.c
2685  *
2686  * Uncomment to enable generic message digest wrappers.
2687  */
2688 #define MBEDTLS_MD_C
2689 
2690 /**
2691  * \def MBEDTLS_MD5_C
2692  *
2693  * Enable the MD5 hash algorithm.
2694  *
2695  * Module:  library/md5.c
2696  * Caller:  library/md.c
2697  *          library/pem.c
2698  *          library/ssl_tls.c
2699  *
2700  * This module is required for TLS 1.2 depending on the handshake parameters.
2701  * Further, it is used for checking MD5-signed certificates, and for PBKDF1
2702  * when decrypting PEM-encoded encrypted keys.
2703  *
2704  * \warning   MD5 is considered a weak message digest and its use constitutes a
2705  *            security risk. If possible, we recommend avoiding dependencies on
2706  *            it, and considering stronger message digests instead.
2707  *
2708  */
2709 #define MBEDTLS_MD5_C
2710 
2711 /**
2712  * \def MBEDTLS_MEMORY_BUFFER_ALLOC_C
2713  *
2714  * Enable the buffer allocator implementation that makes use of a (stack)
2715  * based buffer to 'allocate' dynamic memory. (replaces calloc() and free()
2716  * calls)
2717  *
2718  * Module:  library/memory_buffer_alloc.c
2719  *
2720  * Requires: MBEDTLS_PLATFORM_C
2721  *           MBEDTLS_PLATFORM_MEMORY (to use it within mbed TLS)
2722  *
2723  * Enable this module to enable the buffer memory allocator.
2724  */
2725 #ifdef HILINK_E2E_SECURITY_CONFIG
2726 #define MBEDTLS_MEMORY_BUFFER_ALLOC_C
2727 #endif
2728 
2729 /**
2730  * \def MBEDTLS_NET_C
2731  *
2732  * Enable the TCP and UDP over IPv6/IPv4 networking routines.
2733  *
2734  * \note This module only works on POSIX/Unix (including Linux, BSD and OS X)
2735  * and Windows. For other platforms, you'll want to disable it, and write your
2736  * own networking callbacks to be passed to \c mbedtls_ssl_set_bio().
2737  *
2738  * \note See also our Knowledge Base article about porting to a new
2739  * environment:
2740  * https://mbed-tls.readthedocs.io/en/latest/kb/how-to/how-do-i-port-mbed-tls-to-a-new-environment-OS
2741  *
2742  * Module:  library/net_sockets.c
2743  *
2744  * This module provides networking routines.
2745  */
2746 #define MBEDTLS_NET_C
2747 
2748 /**
2749  * \def MBEDTLS_OID_C
2750  *
2751  * Enable the OID database.
2752  *
2753  * Module:  library/oid.c
2754  * Caller:  library/asn1write.c
2755  *          library/pkcs5.c
2756  *          library/pkparse.c
2757  *          library/pkwrite.c
2758  *          library/rsa.c
2759  *          library/x509.c
2760  *          library/x509_create.c
2761  *          library/x509_crl.c
2762  *          library/x509_crt.c
2763  *          library/x509_csr.c
2764  *          library/x509write_crt.c
2765  *          library/x509write_csr.c
2766  *
2767  * This modules translates between OIDs and internal values.
2768  */
2769 #define MBEDTLS_OID_C
2770 
2771 /**
2772  * \def MBEDTLS_PADLOCK_C
2773  *
2774  * Enable VIA Padlock support on x86.
2775  *
2776  * Module:  library/padlock.c
2777  * Caller:  library/aes.c
2778  *
2779  * Requires: MBEDTLS_HAVE_ASM
2780  *
2781  * This modules adds support for the VIA PadLock on x86.
2782  */
2783 #define MBEDTLS_PADLOCK_C
2784 
2785 /**
2786  * \def MBEDTLS_PEM_PARSE_C
2787  *
2788  * Enable PEM decoding / parsing.
2789  *
2790  * Module:  library/pem.c
2791  * Caller:  library/dhm.c
2792  *          library/pkparse.c
2793  *          library/x509_crl.c
2794  *          library/x509_crt.c
2795  *          library/x509_csr.c
2796  *
2797  * Requires: MBEDTLS_BASE64_C
2798  *
2799  * This modules adds support for decoding / parsing PEM files.
2800  */
2801 #define MBEDTLS_PEM_PARSE_C
2802 
2803 /**
2804  * \def MBEDTLS_PEM_WRITE_C
2805  *
2806  * Enable PEM encoding / writing.
2807  *
2808  * Module:  library/pem.c
2809  * Caller:  library/pkwrite.c
2810  *          library/x509write_crt.c
2811  *          library/x509write_csr.c
2812  *
2813  * Requires: MBEDTLS_BASE64_C
2814  *
2815  * This modules adds support for encoding / writing PEM files.
2816  */
2817 #define MBEDTLS_PEM_WRITE_C
2818 
2819 /**
2820  * \def MBEDTLS_PK_C
2821  *
2822  * Enable the generic public (asymmetric) key layer.
2823  *
2824  * Module:  library/pk.c
2825  * Caller:  library/psa_crypto_rsa.c
2826  *          library/ssl_tls.c
2827  *          library/ssl*_client.c
2828  *          library/ssl*_server.c
2829  *          library/x509.c
2830  *
2831  * Requires: MBEDTLS_MD_C, MBEDTLS_RSA_C or MBEDTLS_ECP_C
2832  *
2833  * Uncomment to enable generic public key wrappers.
2834  */
2835 #define MBEDTLS_PK_C
2836 
2837 /**
2838  * \def MBEDTLS_PK_PARSE_C
2839  *
2840  * Enable the generic public (asymmetric) key parser.
2841  *
2842  * Module:  library/pkparse.c
2843  * Caller:  library/x509_crt.c
2844  *          library/x509_csr.c
2845  *
2846  * Requires: MBEDTLS_PK_C
2847  *
2848  * Uncomment to enable generic public key parse functions.
2849  */
2850 #define MBEDTLS_PK_PARSE_C
2851 
2852 /**
2853  * \def MBEDTLS_PK_WRITE_C
2854  *
2855  * Enable the generic public (asymmetric) key writer.
2856  *
2857  * Module:  library/pkwrite.c
2858  * Caller:  library/x509write.c
2859  *
2860  * Requires: MBEDTLS_PK_C
2861  *
2862  * Uncomment to enable generic public key write functions.
2863  */
2864 #define MBEDTLS_PK_WRITE_C
2865 
2866 /**
2867  * \def MBEDTLS_PKCS5_C
2868  *
2869  * Enable PKCS#5 functions.
2870  *
2871  * Module:  library/pkcs5.c
2872  *
2873  * Requires: MBEDTLS_CIPHER_C and either MBEDTLS_MD_C or MBEDTLS_PSA_CRYPTO_C.
2874  *
2875  * \warning If building without MBEDTLS_MD_C, you must call psa_crypto_init()
2876  * before doing any PKCS5 operation.
2877  *
2878  * \warning When building with MBEDTLS_MD_C, all hashes used with this
2879  * need to be available as built-ins (that is, for SHA-256, MBEDTLS_SHA256_C,
2880  * etc.) as opposed to just PSA drivers. So far, PSA drivers are only used by
2881  * this module in builds where MBEDTLS_MD_C is disabled.
2882  *
2883  * This module adds support for the PKCS#5 functions.
2884  */
2885 #define MBEDTLS_PKCS5_C
2886 
2887 /**
2888  * \def MBEDTLS_PKCS7_C
2889  *
2890  * Enable PKCS #7 core for using PKCS #7-formatted signatures.
2891  * RFC Link - https://tools.ietf.org/html/rfc2315
2892  *
2893  * Module:  library/pkcs7.c
2894  *
2895  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_OID_C, MBEDTLS_PK_PARSE_C,
2896  *           MBEDTLS_X509_CRT_PARSE_C MBEDTLS_X509_CRL_PARSE_C,
2897  *           MBEDTLS_BIGNUM_C, MBEDTLS_MD_C
2898  *
2899  * This module is required for the PKCS #7 parsing modules.
2900  */
2901 #define MBEDTLS_PKCS7_C
2902 
2903 /**
2904  * \def MBEDTLS_PKCS12_C
2905  *
2906  * Enable PKCS#12 PBE functions.
2907  * Adds algorithms for parsing PKCS#8 encrypted private keys
2908  *
2909  * Module:  library/pkcs12.c
2910  * Caller:  library/pkparse.c
2911  *
2912  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_CIPHER_C and either
2913  * MBEDTLS_MD_C or MBEDTLS_PSA_CRYPTO_C.
2914  *
2915  * \warning If building without MBEDTLS_MD_C, you must call psa_crypto_init()
2916  * before doing any PKCS12 operation.
2917  *
2918  * \warning When building with MBEDTLS_MD_C, all hashes used with this
2919  * need to be available as built-ins (that is, for SHA-256, MBEDTLS_SHA256_C,
2920  * etc.) as opposed to just PSA drivers. So far, PSA drivers are only used by
2921  * this module in builds where MBEDTLS_MD_C is disabled.
2922  *
2923  * This module enables PKCS#12 functions.
2924  */
2925 //#define MBEDTLS_PKCS12_C
2926 
2927 /**
2928  * \def MBEDTLS_PLATFORM_C
2929  *
2930  * Enable the platform abstraction layer that allows you to re-assign
2931  * functions like calloc(), free(), snprintf(), printf(), fprintf(), exit().
2932  *
2933  * Enabling MBEDTLS_PLATFORM_C enables to use of MBEDTLS_PLATFORM_XXX_ALT
2934  * or MBEDTLS_PLATFORM_XXX_MACRO directives, allowing the functions mentioned
2935  * above to be specified at runtime or compile time respectively.
2936  *
2937  * \note This abstraction layer must be enabled on Windows (including MSYS2)
2938  * as other modules rely on it for a fixed snprintf implementation.
2939  *
2940  * Module:  library/platform.c
2941  * Caller:  Most other .c files
2942  *
2943  * This module enables abstraction of common (libc) functions.
2944  */
2945 #define MBEDTLS_PLATFORM_C
2946 
2947 /**
2948  * \def MBEDTLS_POLY1305_C
2949  *
2950  * Enable the Poly1305 MAC algorithm.
2951  *
2952  * Module:  library/poly1305.c
2953  * Caller:  library/chachapoly.c
2954  */
2955 #define MBEDTLS_POLY1305_C
2956 
2957 /**
2958  * \def MBEDTLS_PSA_CRYPTO_C
2959  *
2960  * Enable the Platform Security Architecture cryptography API.
2961  *
2962  * Module:  library/psa_crypto.c
2963  *
2964  * Requires: MBEDTLS_CIPHER_C,
2965  *           either MBEDTLS_CTR_DRBG_C and MBEDTLS_ENTROPY_C,
2966  *           or MBEDTLS_HMAC_DRBG_C and MBEDTLS_ENTROPY_C,
2967  *           or MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG.
2968  *
2969  */
2970 #define MBEDTLS_PSA_CRYPTO_C
2971 
2972 /**
2973  * \def MBEDTLS_PSA_CRYPTO_SE_C
2974  *
2975  * Enable dynamic secure element support in the Platform Security Architecture
2976  * cryptography API.
2977  *
2978  * \deprecated This feature is deprecated. Please switch to the driver
2979  *             interface enabled by #MBEDTLS_PSA_CRYPTO_DRIVERS.
2980  *
2981  * Module:  library/psa_crypto_se.c
2982  *
2983  * Requires: MBEDTLS_PSA_CRYPTO_C, MBEDTLS_PSA_CRYPTO_STORAGE_C
2984  *
2985  */
2986 //#define MBEDTLS_PSA_CRYPTO_SE_C
2987 
2988 /**
2989  * \def MBEDTLS_PSA_CRYPTO_STORAGE_C
2990  *
2991  * Enable the Platform Security Architecture persistent key storage.
2992  *
2993  * Module:  library/psa_crypto_storage.c
2994  *
2995  * Requires: MBEDTLS_PSA_CRYPTO_C,
2996  *           either MBEDTLS_PSA_ITS_FILE_C or a native implementation of
2997  *           the PSA ITS interface
2998  */
2999 #define MBEDTLS_PSA_CRYPTO_STORAGE_C
3000 
3001 /**
3002  * \def MBEDTLS_PSA_ITS_FILE_C
3003  *
3004  * Enable the emulation of the Platform Security Architecture
3005  * Internal Trusted Storage (PSA ITS) over files.
3006  *
3007  * Module:  library/psa_its_file.c
3008  *
3009  * Requires: MBEDTLS_FS_IO
3010  */
3011 #define MBEDTLS_PSA_ITS_FILE_C
3012 
3013 /**
3014  * \def MBEDTLS_RIPEMD160_C
3015  *
3016  * Enable the RIPEMD-160 hash algorithm.
3017  *
3018  * Module:  library/ripemd160.c
3019  * Caller:  library/md.c
3020  *
3021  */
3022 //#define MBEDTLS_RIPEMD160_C
3023 
3024 /**
3025  * \def MBEDTLS_RSA_C
3026  *
3027  * Enable the RSA public-key cryptosystem.
3028  *
3029  * Module:  library/rsa.c
3030  *          library/rsa_alt_helpers.c
3031  * Caller:  library/pk.c
3032  *          library/psa_crypto.c
3033  *          library/ssl_tls.c
3034  *          library/ssl*_client.c
3035  *          library/ssl*_server.c
3036  *
3037  * This module is used by the following key exchanges:
3038  *      RSA, DHE-RSA, ECDHE-RSA, RSA-PSK
3039  *
3040  * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C
3041  */
3042 #define MBEDTLS_RSA_C
3043 
3044 /**
3045  * \def MBEDTLS_SHA1_C
3046  *
3047  * Enable the SHA1 cryptographic hash algorithm.
3048  *
3049  * Module:  library/sha1.c
3050  * Caller:  library/md.c
3051  *          library/psa_crypto_hash.c
3052  *
3053  * This module is required for TLS 1.2 depending on the handshake parameters,
3054  * and for SHA1-signed certificates.
3055  *
3056  * \warning   SHA-1 is considered a weak message digest and its use constitutes
3057  *            a security risk. If possible, we recommend avoiding dependencies
3058  *            on it, and considering stronger message digests instead.
3059  *
3060  */
3061 #define MBEDTLS_SHA1_C
3062 
3063 /**
3064  * \def MBEDTLS_SHA224_C
3065  *
3066  * Enable the SHA-224 cryptographic hash algorithm.
3067  *
3068  * Module:  library/sha256.c
3069  * Caller:  library/md.c
3070  *          library/ssl_cookie.c
3071  *
3072  * This module adds support for SHA-224.
3073  */
3074 #define MBEDTLS_SHA224_C
3075 
3076 /**
3077  * \def MBEDTLS_SHA256_C
3078  *
3079  * Enable the SHA-256 cryptographic hash algorithm.
3080  *
3081  * Module:  library/sha256.c
3082  * Caller:  library/entropy.c
3083  *          library/md.c
3084  *          library/ssl_tls.c
3085  *          library/ssl*_client.c
3086  *          library/ssl*_server.c
3087  *
3088  * This module adds support for SHA-256.
3089  * This module is required for the SSL/TLS 1.2 PRF function.
3090  */
3091 #define MBEDTLS_SHA256_C
3092 
3093 /**
3094  * \def MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT
3095  *
3096  * Enable acceleration of the SHA-256 and SHA-224 cryptographic hash algorithms
3097  * with the ARMv8 cryptographic extensions if they are available at runtime.
3098  * If not, the library will fall back to the C implementation.
3099  *
3100  * \note If MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT is defined when building
3101  * for a non-Aarch64 build it will be silently ignored.
3102  *
3103  * \warning MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT cannot be defined at the
3104  * same time as MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY.
3105  *
3106  * Requires: MBEDTLS_SHA256_C.
3107  *
3108  * Module:  library/sha256.c
3109  *
3110  * Uncomment to have the library check for the A64 SHA-256 crypto extensions
3111  * and use them if available.
3112  */
3113 //#define MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT
3114 
3115 /**
3116  * \def MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY
3117  *
3118  * Enable acceleration of the SHA-256 and SHA-224 cryptographic hash algorithms
3119  * with the ARMv8 cryptographic extensions, which must be available at runtime
3120  * or else an illegal instruction fault will occur.
3121  *
3122  * \note This allows builds with a smaller code size than with
3123  * MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT
3124  *
3125  * \warning MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY cannot be defined at the same
3126  * time as MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT.
3127  *
3128  * Requires: MBEDTLS_SHA256_C.
3129  *
3130  * Module:  library/sha256.c
3131  *
3132  * Uncomment to have the library use the A64 SHA-256 crypto extensions
3133  * unconditionally.
3134  */
3135 //#define MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY
3136 
3137 /**
3138  * \def MBEDTLS_SHA384_C
3139  *
3140  * Enable the SHA-384 cryptographic hash algorithm.
3141  *
3142  * Module:  library/sha512.c
3143  * Caller:  library/md.c
3144  *          library/psa_crypto_hash.c
3145  *          library/ssl_tls.c
3146  *          library/ssl*_client.c
3147  *          library/ssl*_server.c
3148  *
3149  * Comment to disable SHA-384
3150  */
3151 #define MBEDTLS_SHA384_C
3152 
3153 /**
3154  * \def MBEDTLS_SHA512_C
3155  *
3156  * Enable SHA-512 cryptographic hash algorithms.
3157  *
3158  * Module:  library/sha512.c
3159  * Caller:  library/entropy.c
3160  *          library/md.c
3161  *          library/ssl_tls.c
3162  *          library/ssl_cookie.c
3163  *
3164  * This module adds support for SHA-512.
3165  */
3166 #define MBEDTLS_SHA512_C
3167 
3168 /**
3169  * \def MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
3170  *
3171  * Enable acceleration of the SHA-512 and SHA-384 cryptographic hash algorithms
3172  * with the ARMv8 cryptographic extensions if they are available at runtime.
3173  * If not, the library will fall back to the C implementation.
3174  *
3175  * \note If MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT is defined when building
3176  * for a non-Aarch64 build it will be silently ignored.
3177  *
3178  * \note The code uses the SHA-512 Neon intrinsics, so requires GCC >= 8 or
3179  * Clang >= 7.
3180  *
3181  * \warning MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT cannot be defined at the
3182  * same time as MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY.
3183  *
3184  * Requires: MBEDTLS_SHA512_C.
3185  *
3186  * Module:  library/sha512.c
3187  *
3188  * Uncomment to have the library check for the A64 SHA-512 crypto extensions
3189  * and use them if available.
3190  */
3191 //#define MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
3192 
3193 /**
3194  * \def MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY
3195  *
3196  * Enable acceleration of the SHA-512 and SHA-384 cryptographic hash algorithms
3197  * with the ARMv8 cryptographic extensions, which must be available at runtime
3198  * or else an illegal instruction fault will occur.
3199  *
3200  * \note This allows builds with a smaller code size than with
3201  * MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
3202  *
3203  * \note The code uses the SHA-512 Neon intrinsics, so requires GCC >= 8 or
3204  * Clang >= 7.
3205  *
3206  * \warning MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY cannot be defined at the same
3207  * time as MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT.
3208  *
3209  * Requires: MBEDTLS_SHA512_C.
3210  *
3211  * Module:  library/sha512.c
3212  *
3213  * Uncomment to have the library use the A64 SHA-512 crypto extensions
3214  * unconditionally.
3215  */
3216 //#define MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY
3217 
3218 /**
3219  * \def MBEDTLS_SSL_CACHE_C
3220  *
3221  * Enable simple SSL cache implementation.
3222  *
3223  * Module:  library/ssl_cache.c
3224  * Caller:
3225  *
3226  * Requires: MBEDTLS_SSL_CACHE_C
3227  */
3228 #define MBEDTLS_SSL_CACHE_C
3229 
3230 /**
3231  * \def MBEDTLS_SSL_COOKIE_C
3232  *
3233  * Enable basic implementation of DTLS cookies for hello verification.
3234  *
3235  * Module:  library/ssl_cookie.c
3236  * Caller:
3237  */
3238 #define MBEDTLS_SSL_COOKIE_C
3239 
3240 /**
3241  * \def MBEDTLS_SSL_TICKET_C
3242  *
3243  * Enable an implementation of TLS server-side callbacks for session tickets.
3244  *
3245  * Module:  library/ssl_ticket.c
3246  * Caller:
3247  *
3248  * Requires: (MBEDTLS_CIPHER_C || MBEDTLS_USE_PSA_CRYPTO) &&
3249  *           (MBEDTLS_GCM_C || MBEDTLS_CCM_C || MBEDTLS_CHACHAPOLY_C)
3250  */
3251 #define MBEDTLS_SSL_TICKET_C
3252 
3253 /**
3254  * \def MBEDTLS_SSL_CLI_C
3255  *
3256  * Enable the SSL/TLS client code.
3257  *
3258  * Module:  library/ssl*_client.c
3259  * Caller:
3260  *
3261  * Requires: MBEDTLS_SSL_TLS_C
3262  *
3263  * This module is required for SSL/TLS client support.
3264  */
3265 #define MBEDTLS_SSL_CLI_C
3266 
3267 /**
3268  * \def MBEDTLS_SSL_SRV_C
3269  *
3270  * Enable the SSL/TLS server code.
3271  *
3272  * Module:  library/ssl*_server.c
3273  * Caller:
3274  *
3275  * Requires: MBEDTLS_SSL_TLS_C
3276  *
3277  * This module is required for SSL/TLS server support.
3278  */
3279 //#define MBEDTLS_SSL_SRV_C
3280 
3281 /**
3282  * \def MBEDTLS_SSL_TLS_C
3283  *
3284  * Enable the generic SSL/TLS code.
3285  *
3286  * Module:  library/ssl_tls.c
3287  * Caller:  library/ssl*_client.c
3288  *          library/ssl*_server.c
3289  *
3290  * Requires: MBEDTLS_CIPHER_C, MBEDTLS_MD_C
3291  *           and at least one of the MBEDTLS_SSL_PROTO_XXX defines
3292  *
3293  * This module is required for SSL/TLS.
3294  */
3295 #define MBEDTLS_SSL_TLS_C
3296 
3297 /**
3298  * \def MBEDTLS_THREADING_C
3299  *
3300  * Enable the threading abstraction layer.
3301  * By default mbed TLS assumes it is used in a non-threaded environment or that
3302  * contexts are not shared between threads. If you do intend to use contexts
3303  * between threads, you will need to enable this layer to prevent race
3304  * conditions. See also our Knowledge Base article about threading:
3305  * https://mbed-tls.readthedocs.io/en/latest/kb/development/thread-safety-and-multi-threading
3306  *
3307  * Module:  library/threading.c
3308  *
3309  * This allows different threading implementations (self-implemented or
3310  * provided).
3311  *
3312  * You will have to enable either MBEDTLS_THREADING_ALT or
3313  * MBEDTLS_THREADING_PTHREAD.
3314  *
3315  * Enable this layer to allow use of mutexes within mbed TLS
3316  */
3317 //#define MBEDTLS_THREADING_C
3318 
3319 /**
3320  * \def MBEDTLS_TIMING_C
3321  *
3322  * Enable the semi-portable timing interface.
3323  *
3324  * \note The provided implementation only works on POSIX/Unix (including Linux,
3325  * BSD and OS X) and Windows. On other platforms, you can either disable that
3326  * module and provide your own implementations of the callbacks needed by
3327  * \c mbedtls_ssl_set_timer_cb() for DTLS, or leave it enabled and provide
3328  * your own implementation of the whole module by setting
3329  * \c MBEDTLS_TIMING_ALT in the current file.
3330  *
3331  * \note The timing module will include time.h on suitable platforms
3332  *       regardless of the setting of MBEDTLS_HAVE_TIME, unless
3333  *       MBEDTLS_TIMING_ALT is used. See timing.c for more information.
3334  *
3335  * \note See also our Knowledge Base article about porting to a new
3336  * environment:
3337  * https://mbed-tls.readthedocs.io/en/latest/kb/how-to/how-do-i-port-mbed-tls-to-a-new-environment-OS
3338  *
3339  * Module:  library/timing.c
3340  */
3341 #define MBEDTLS_TIMING_C
3342 
3343 /**
3344  * \def MBEDTLS_VERSION_C
3345  *
3346  * Enable run-time version information.
3347  *
3348  * Module:  library/version.c
3349  *
3350  * This module provides run-time version information.
3351  */
3352 #define MBEDTLS_VERSION_C
3353 
3354 /**
3355  * \def MBEDTLS_X509_USE_C
3356  *
3357  * Enable X.509 core for using certificates.
3358  *
3359  * Module:  library/x509.c
3360  * Caller:  library/x509_crl.c
3361  *          library/x509_crt.c
3362  *          library/x509_csr.c
3363  *
3364  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_BIGNUM_C, MBEDTLS_OID_C, MBEDTLS_PK_PARSE_C,
3365  *           (MBEDTLS_MD_C or MBEDTLS_USE_PSA_CRYPTO)
3366  *
3367  * \warning If building with MBEDTLS_USE_PSA_CRYPTO, you must call
3368  * psa_crypto_init() before doing any X.509 operation.
3369  *
3370  * This module is required for the X.509 parsing modules.
3371  */
3372 #define MBEDTLS_X509_USE_C
3373 
3374 /**
3375  * \def MBEDTLS_X509_CRT_PARSE_C
3376  *
3377  * Enable X.509 certificate parsing.
3378  *
3379  * Module:  library/x509_crt.c
3380  * Caller:  library/ssl_tls.c
3381  *          library/ssl*_client.c
3382  *          library/ssl*_server.c
3383  *
3384  * Requires: MBEDTLS_X509_USE_C
3385  *
3386  * This module is required for X.509 certificate parsing.
3387  */
3388 #define MBEDTLS_X509_CRT_PARSE_C
3389 
3390 /**
3391  * \def MBEDTLS_X509_CRL_PARSE_C
3392  *
3393  * Enable X.509 CRL parsing.
3394  *
3395  * Module:  library/x509_crl.c
3396  * Caller:  library/x509_crt.c
3397  *
3398  * Requires: MBEDTLS_X509_USE_C
3399  *
3400  * This module is required for X.509 CRL parsing.
3401  */
3402 #define MBEDTLS_X509_CRL_PARSE_C
3403 
3404 /**
3405  * \def MBEDTLS_X509_CSR_PARSE_C
3406  *
3407  * Enable X.509 Certificate Signing Request (CSR) parsing.
3408  *
3409  * Module:  library/x509_csr.c
3410  * Caller:  library/x509_crt_write.c
3411  *
3412  * Requires: MBEDTLS_X509_USE_C
3413  *
3414  * This module is used for reading X.509 certificate request.
3415  */
3416 //#define MBEDTLS_X509_CSR_PARSE_C
3417 
3418 /**
3419  * \def MBEDTLS_X509_CREATE_C
3420  *
3421  * Enable X.509 core for creating certificates.
3422  *
3423  * Module:  library/x509_create.c
3424  *
3425  * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C, MBEDTLS_PK_PARSE_C,
3426  *           (MBEDTLS_MD_C or MBEDTLS_USE_PSA_CRYPTO)
3427  *
3428  * \warning If building with MBEDTLS_USE_PSA_CRYPTO, you must call
3429  * psa_crypto_init() before doing any X.509 create operation.
3430  *
3431  * This module is the basis for creating X.509 certificates and CSRs.
3432  */
3433 //#define MBEDTLS_X509_CREATE_C
3434 
3435 /**
3436  * \def MBEDTLS_X509_CRT_WRITE_C
3437  *
3438  * Enable creating X.509 certificates.
3439  *
3440  * Module:  library/x509_crt_write.c m
3441  *
3442  * Requires: MBEDTLS_X509_CREATE_C
3443  *
3444  * This module is required for X.509 certificate creation.
3445  */
3446 //#define MBEDTLS_X509_CRT_WRITE_C
3447 
3448 /**
3449  * \def MBEDTLS_X509_CSR_WRITE_C
3450  *
3451  * Enable creating X.509 Certificate Signing Requests (CSR).
3452  *
3453  * Module:  library/x509_csr_write.c
3454  *
3455  * Requires: MBEDTLS_X509_CREATE_C
3456  *
3457  * This module is required for X.509 certificate request writing.
3458  */
3459 //#define MBEDTLS_X509_CSR_WRITE_C
3460 
3461 /** \} name SECTION: mbed TLS modules */
3462 
3463 /**
3464  * \name SECTION: General configuration options
3465  *
3466  * This section contains Mbed TLS build settings that are not associated
3467  * with a particular module.
3468  *
3469  * \{
3470  */
3471 
3472 /**
3473  * \def MBEDTLS_CONFIG_FILE
3474  *
3475  * If defined, this is a header which will be included instead of
3476  * `"mbedtls/mbedtls_config.h"`.
3477  * This header file specifies the compile-time configuration of Mbed TLS.
3478  * Unlike other configuration options, this one must be defined on the
3479  * compiler command line: a definition in `mbedtls_config.h` would have
3480  * no effect.
3481  *
3482  * This macro is expanded after an <tt>\#include</tt> directive. This is a popular but
3483  * non-standard feature of the C language, so this feature is only available
3484  * with compilers that perform macro expansion on an <tt>\#include</tt> line.
3485  *
3486  * The value of this symbol is typically a path in double quotes, either
3487  * absolute or relative to a directory on the include search path.
3488  */
3489 //#define MBEDTLS_CONFIG_FILE "mbedtls/mbedtls_config.h"
3490 
3491 /**
3492  * \def MBEDTLS_USER_CONFIG_FILE
3493  *
3494  * If defined, this is a header which will be included after
3495  * `"mbedtls/mbedtls_config.h"` or #MBEDTLS_CONFIG_FILE.
3496  * This allows you to modify the default configuration, including the ability
3497  * to undefine options that are enabled by default.
3498  *
3499  * This macro is expanded after an <tt>\#include</tt> directive. This is a popular but
3500  * non-standard feature of the C language, so this feature is only available
3501  * with compilers that perform macro expansion on an <tt>\#include</tt> line.
3502  *
3503  * The value of this symbol is typically a path in double quotes, either
3504  * absolute or relative to a directory on the include search path.
3505  */
3506 //#define MBEDTLS_USER_CONFIG_FILE "/dev/null"
3507 
3508 /**
3509  * \def MBEDTLS_PSA_CRYPTO_CONFIG_FILE
3510  *
3511  * If defined, this is a header which will be included instead of
3512  * `"psa/crypto_config.h"`.
3513  * This header file specifies which cryptographic mechanisms are available
3514  * through the PSA API when #MBEDTLS_PSA_CRYPTO_CONFIG is enabled, and
3515  * is not used when #MBEDTLS_PSA_CRYPTO_CONFIG is disabled.
3516  *
3517  * This macro is expanded after an <tt>\#include</tt> directive. This is a popular but
3518  * non-standard feature of the C language, so this feature is only available
3519  * with compilers that perform macro expansion on an <tt>\#include</tt> line.
3520  *
3521  * The value of this symbol is typically a path in double quotes, either
3522  * absolute or relative to a directory on the include search path.
3523  */
3524 //#define MBEDTLS_PSA_CRYPTO_CONFIG_FILE "psa/crypto_config.h"
3525 
3526 /**
3527  * \def MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE
3528  *
3529  * If defined, this is a header which will be included after
3530  * `"psa/crypto_config.h"` or #MBEDTLS_PSA_CRYPTO_CONFIG_FILE.
3531  * This allows you to modify the default configuration, including the ability
3532  * to undefine options that are enabled by default.
3533  *
3534  * This macro is expanded after an <tt>\#include</tt> directive. This is a popular but
3535  * non-standard feature of the C language, so this feature is only available
3536  * with compilers that perform macro expansion on an <tt>\#include</tt> line.
3537  *
3538  * The value of this symbol is typically a path in double quotes, either
3539  * absolute or relative to a directory on the include search path.
3540  */
3541 //#define MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE "/dev/null"
3542 
3543 /**
3544  * \def MBEDTLS_PSA_CRYPTO_PLATFORM_FILE
3545  *
3546  * If defined, this is a header which will be included instead of
3547  * `"psa/crypto_platform.h"`. This file should declare the same identifiers
3548  * as the one in Mbed TLS, but with definitions adapted to the platform on
3549  * which the library code will run.
3550  *
3551  * \note The required content of this header can vary from one version of
3552  *       Mbed TLS to the next. Integrators who provide an alternative file
3553  *       should review the changes in the original file whenever they
3554  *       upgrade Mbed TLS.
3555  *
3556  * This macro is expanded after an <tt>\#include</tt> directive. This is a popular but
3557  * non-standard feature of the C language, so this feature is only available
3558  * with compilers that perform macro expansion on an <tt>\#include</tt> line.
3559  *
3560  * The value of this symbol is typically a path in double quotes, either
3561  * absolute or relative to a directory on the include search path.
3562  */
3563 //#define MBEDTLS_PSA_CRYPTO_PLATFORM_FILE "psa/crypto_platform_alt.h"
3564 
3565 /**
3566  * \def MBEDTLS_PSA_CRYPTO_STRUCT_FILE
3567  *
3568  * If defined, this is a header which will be included instead of
3569  * `"psa/crypto_struct.h"`. This file should declare the same identifiers
3570  * as the one in Mbed TLS, but with definitions adapted to the environment
3571  * in which the library code will run. The typical use for this feature
3572  * is to provide alternative type definitions on the client side in
3573  * client-server integrations of PSA crypto, where operation structures
3574  * contain handles instead of cryptographic data.
3575  *
3576  * \note The required content of this header can vary from one version of
3577  *       Mbed TLS to the next. Integrators who provide an alternative file
3578  *       should review the changes in the original file whenever they
3579  *       upgrade Mbed TLS.
3580  *
3581  * This macro is expanded after an <tt>\#include</tt> directive. This is a popular but
3582  * non-standard feature of the C language, so this feature is only available
3583  * with compilers that perform macro expansion on an <tt>\#include</tt> line.
3584  *
3585  * The value of this symbol is typically a path in double quotes, either
3586  * absolute or relative to a directory on the include search path.
3587  */
3588 //#define MBEDTLS_PSA_CRYPTO_STRUCT_FILE "psa/crypto_struct_alt.h"
3589 
3590 /** \} name SECTION: General configuration options */
3591 
3592 /**
3593  * \name SECTION: Module configuration options
3594  *
3595  * This section allows for the setting of module specific sizes and
3596  * configuration options. The default values are already present in the
3597  * relevant header files and should suffice for the regular use cases.
3598  *
3599  * Our advice is to enable options and change their values here
3600  * only if you have a good reason and know the consequences.
3601  * \{
3602  */
3603 /* The Doxygen documentation here is used when a user comments out a
3604  * setting and runs doxygen themselves. On the other hand, when we typeset
3605  * the full documentation including disabled settings, the documentation
3606  * in specific modules' header files is used if present. When editing this
3607  * file, make sure that each option is documented in exactly one place,
3608  * plus optionally a same-line Doxygen comment here if there is a Doxygen
3609  * comment in the specific module. */
3610 
3611 /* MPI / BIGNUM options */
3612 //#define MBEDTLS_MPI_WINDOW_SIZE            2 /**< Maximum window size used. */
3613 //#define MBEDTLS_MPI_MAX_SIZE            1024 /**< Maximum number of bytes for usable MPIs. */
3614 
3615 /* CTR_DRBG options */
3616 //#define MBEDTLS_CTR_DRBG_ENTROPY_LEN               48 /**< Amount of entropy used per seed by default (48 with SHA-512, 32 with SHA-256) */
3617 //#define MBEDTLS_CTR_DRBG_RESEED_INTERVAL        10000 /**< Interval before reseed is performed by default */
3618 //#define MBEDTLS_CTR_DRBG_MAX_INPUT                256 /**< Maximum number of additional input bytes */
3619 //#define MBEDTLS_CTR_DRBG_MAX_REQUEST             1024 /**< Maximum number of requested bytes per call */
3620 //#define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT           384 /**< Maximum size of (re)seed buffer */
3621 
3622 /* HMAC_DRBG options */
3623 //#define MBEDTLS_HMAC_DRBG_RESEED_INTERVAL   10000 /**< Interval before reseed is performed by default */
3624 //#define MBEDTLS_HMAC_DRBG_MAX_INPUT           256 /**< Maximum number of additional input bytes */
3625 //#define MBEDTLS_HMAC_DRBG_MAX_REQUEST        1024 /**< Maximum number of requested bytes per call */
3626 //#define MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT      384 /**< Maximum size of (re)seed buffer */
3627 
3628 /* ECP options */
3629 //#define MBEDTLS_ECP_WINDOW_SIZE            4 /**< Maximum window size used */
3630 //#define MBEDTLS_ECP_FIXED_POINT_OPTIM      1 /**< Enable fixed-point speed-up */
3631 
3632 /* Entropy options */
3633 //#define MBEDTLS_ENTROPY_MAX_SOURCES                20 /**< Maximum number of sources supported */
3634 //#define MBEDTLS_ENTROPY_MAX_GATHER                128 /**< Maximum amount requested from entropy sources */
3635 //#define MBEDTLS_ENTROPY_MIN_HARDWARE               32 /**< Default minimum number of bytes required for the hardware entropy source mbedtls_hardware_poll() before entropy is released */
3636 
3637 /* Memory buffer allocator options */
3638 //#define MBEDTLS_MEMORY_ALIGN_MULTIPLE      4 /**< Align on multiples of this value */
3639 
3640 /* Platform options */
3641 //#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. */
3642 #define MBEDTLS_PLATFORM_STD_CALLOC        calloc /**< Default allocator to use, can be undefined */
3643 #define MBEDTLS_PLATFORM_STD_FREE            free /**< Default free to use, can be undefined */
3644 //#define MBEDTLS_PLATFORM_STD_SETBUF      setbuf /**< Default setbuf to use, can be undefined */
3645 //#define MBEDTLS_PLATFORM_STD_EXIT            exit /**< Default exit to use, can be undefined */
3646 //#define MBEDTLS_PLATFORM_STD_TIME            time /**< Default time to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3647 //#define MBEDTLS_PLATFORM_STD_FPRINTF      fprintf /**< Default fprintf to use, can be undefined */
3648 //#define MBEDTLS_PLATFORM_STD_PRINTF        printf /**< Default printf to use, can be undefined */
3649 /* Note: your snprintf must correctly zero-terminate the buffer! */
3650  #define MBEDTLS_PLATFORM_STD_SNPRINTF    snprintf /**< Default snprintf to use, can be undefined */
3651 //#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS       0 /**< Default exit value to use, can be undefined */
3652 //#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE       1 /**< Default exit value to use, can be undefined */
3653 //#define MBEDTLS_PLATFORM_STD_NV_SEED_READ   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */
3654 //#define MBEDTLS_PLATFORM_STD_NV_SEED_WRITE  mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */
3655 //#define MBEDTLS_PLATFORM_STD_NV_SEED_FILE  "seedfile" /**< Seed file to read/write with default implementation */
3656 
3657 /* To Use Function Macros MBEDTLS_PLATFORM_C must be enabled */
3658 /* MBEDTLS_PLATFORM_XXX_MACRO and MBEDTLS_PLATFORM_XXX_ALT cannot both be defined */
3659 //#define MBEDTLS_PLATFORM_CALLOC_MACRO        calloc /**< Default allocator macro to use, can be undefined */
3660 //#define MBEDTLS_PLATFORM_FREE_MACRO            free /**< Default free macro to use, can be undefined */
3661 //#define MBEDTLS_PLATFORM_EXIT_MACRO            exit /**< Default exit macro to use, can be undefined */
3662 //#define MBEDTLS_PLATFORM_SETBUF_MACRO      setbuf /**< Default setbuf macro to use, can be undefined */
3663 //#define MBEDTLS_PLATFORM_TIME_MACRO            time /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3664 //#define MBEDTLS_PLATFORM_TIME_TYPE_MACRO       time_t /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3665 //#define MBEDTLS_PLATFORM_FPRINTF_MACRO      fprintf /**< Default fprintf macro to use, can be undefined */
3666 //#define MBEDTLS_PLATFORM_PRINTF_MACRO        printf /**< Default printf macro to use, can be undefined */
3667 /* Note: your snprintf must correctly zero-terminate the buffer! */
3668 //#define MBEDTLS_PLATFORM_SNPRINTF_MACRO    snprintf /**< Default snprintf macro to use, can be undefined */
3669 //#define MBEDTLS_PLATFORM_VSNPRINTF_MACRO    vsnprintf /**< Default vsnprintf macro to use, can be undefined */
3670 //#define MBEDTLS_PLATFORM_NV_SEED_READ_MACRO   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */
3671 //#define MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO  mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */
3672 
3673 /** \def MBEDTLS_CHECK_RETURN
3674  *
3675  * This macro is used at the beginning of the declaration of a function
3676  * to indicate that its return value should be checked. It should
3677  * instruct the compiler to emit a warning or an error if the function
3678  * is called without checking its return value.
3679  *
3680  * There is a default implementation for popular compilers in platform_util.h.
3681  * You can override the default implementation by defining your own here.
3682  *
3683  * If the implementation here is empty, this will effectively disable the
3684  * checking of functions' return values.
3685  */
3686 //#define MBEDTLS_CHECK_RETURN __attribute__((__warn_unused_result__))
3687 
3688 /** \def MBEDTLS_IGNORE_RETURN
3689  *
3690  * This macro requires one argument, which should be a C function call.
3691  * If that function call would cause a #MBEDTLS_CHECK_RETURN warning, this
3692  * warning is suppressed.
3693  */
3694 //#define MBEDTLS_IGNORE_RETURN( result ) ((void) !(result))
3695 
3696 /* PSA options */
3697 /**
3698  * Use HMAC_DRBG with the specified hash algorithm for HMAC_DRBG for the
3699  * PSA crypto subsystem.
3700  *
3701  * If this option is unset:
3702  * - If CTR_DRBG is available, the PSA subsystem uses it rather than HMAC_DRBG.
3703  * - Otherwise, the PSA subsystem uses HMAC_DRBG with either
3704  *   #MBEDTLS_MD_SHA512 or #MBEDTLS_MD_SHA256 based on availability and
3705  *   on unspecified heuristics.
3706  */
3707 //#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA256
3708 
3709 /** \def MBEDTLS_PSA_KEY_SLOT_COUNT
3710  * Restrict the PSA library to supporting a maximum amount of simultaneously
3711  * loaded keys. A loaded key is a key stored by the PSA Crypto core as a
3712  * volatile key, or a persistent key which is loaded temporarily by the
3713  * library as part of a crypto operation in flight.
3714  *
3715  * If this option is unset, the library will fall back to a default value of
3716  * 32 keys.
3717  */
3718 //#define MBEDTLS_PSA_KEY_SLOT_COUNT 32
3719 
3720 /* SSL Cache options */
3721 //#define MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT       86400 /**< 1 day  */
3722 //#define MBEDTLS_SSL_CACHE_DEFAULT_MAX_ENTRIES      50 /**< Maximum entries in cache */
3723 
3724 /* SSL options */
3725 
3726 /** \def MBEDTLS_SSL_MAX_CONTENT_LEN
3727  *
3728  * Maximum length (in bytes) of incoming and outgoing plaintext fragments.
3729  *
3730  * This determines the size of both the incoming and outgoing TLS I/O buffers
3731  * in such a way that both are capable of holding the specified amount of
3732  * plaintext data, regardless of the protection mechanism used.
3733  *
3734  * To configure incoming and outgoing I/O buffers separately, use
3735  * #MBEDTLS_SSL_IN_CONTENT_LEN and #MBEDTLS_SSL_OUT_CONTENT_LEN,
3736  * which overwrite the value set by this option.
3737  *
3738  * \note When using a value less than the default of 16KB on the client, it is
3739  *       recommended to use the Maximum Fragment Length (MFL) extension to
3740  *       inform the server about this limitation. On the server, there
3741  *       is no supported, standardized way of informing the client about
3742  *       restriction on the maximum size of incoming messages, and unless
3743  *       the limitation has been communicated by other means, it is recommended
3744  *       to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN
3745  *       while keeping the default value of 16KB for the incoming buffer.
3746  *
3747  * Uncomment to set the maximum plaintext size of both
3748  * incoming and outgoing I/O buffers.
3749  */
3750 #define MBEDTLS_SSL_MAX_CONTENT_LEN             16384
3751 
3752 /** \def MBEDTLS_SSL_IN_CONTENT_LEN
3753  *
3754  * Maximum length (in bytes) of incoming plaintext fragments.
3755  *
3756  * This determines the size of the incoming TLS I/O buffer in such a way
3757  * that it is capable of holding the specified amount of plaintext data,
3758  * regardless of the protection mechanism used.
3759  *
3760  * \note When using a value less than the default of 16KB on the client, it is
3761  *       recommended to use the Maximum Fragment Length (MFL) extension to
3762  *       inform the server about this limitation. On the server, there
3763  *       is no supported, standardized way of informing the client about
3764  *       restriction on the maximum size of incoming messages, and unless
3765  *       the limitation has been communicated by other means, it is recommended
3766  *       to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN
3767  *       while keeping the default value of 16KB for the incoming buffer.
3768  *
3769  * Uncomment to set the maximum plaintext size of the incoming I/O buffer.
3770  */
3771 #define MBEDTLS_SSL_IN_CONTENT_LEN              16384
3772 
3773 /** \def MBEDTLS_SSL_CID_IN_LEN_MAX
3774  *
3775  * The maximum length of CIDs used for incoming DTLS messages.
3776  *
3777  */
3778 //#define MBEDTLS_SSL_CID_IN_LEN_MAX 32
3779 
3780 /** \def MBEDTLS_SSL_CID_OUT_LEN_MAX
3781  *
3782  * The maximum length of CIDs used for outgoing DTLS messages.
3783  *
3784  */
3785 //#define MBEDTLS_SSL_CID_OUT_LEN_MAX 32
3786 
3787 /** \def MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY
3788  *
3789  * This option controls the use of record plaintext padding
3790  * in TLS 1.3 and when using the Connection ID extension in DTLS 1.2.
3791  *
3792  * The padding will always be chosen so that the length of the
3793  * padded plaintext is a multiple of the value of this option.
3794  *
3795  * Note: A value of \c 1 means that no padding will be used
3796  *       for outgoing records.
3797  *
3798  * Note: On systems lacking division instructions,
3799  *       a power of two should be preferred.
3800  */
3801 //#define MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY 16
3802 
3803 /** \def MBEDTLS_SSL_OUT_CONTENT_LEN
3804  *
3805  * Maximum length (in bytes) of outgoing plaintext fragments.
3806  *
3807  * This determines the size of the outgoing TLS I/O buffer in such a way
3808  * that it is capable of holding the specified amount of plaintext data,
3809  * regardless of the protection mechanism used.
3810  *
3811  * It is possible to save RAM by setting a smaller outward buffer, while keeping
3812  * the default inward 16384 byte buffer to conform to the TLS specification.
3813  *
3814  * The minimum required outward buffer size is determined by the handshake
3815  * protocol's usage. Handshaking will fail if the outward buffer is too small.
3816  * The specific size requirement depends on the configured ciphers and any
3817  * certificate data which is sent during the handshake.
3818  *
3819  * Uncomment to set the maximum plaintext size of the outgoing I/O buffer.
3820  */
3821 #define MBEDTLS_SSL_OUT_CONTENT_LEN             16384
3822 
3823 /** \def MBEDTLS_SSL_DTLS_MAX_BUFFERING
3824  *
3825  * Maximum number of heap-allocated bytes for the purpose of
3826  * DTLS handshake message reassembly and future message buffering.
3827  *
3828  * This should be at least 9/8 * MBEDTLS_SSL_IN_CONTENT_LEN
3829  * to account for a reassembled handshake message of maximum size,
3830  * together with its reassembly bitmap.
3831  *
3832  * A value of 2 * MBEDTLS_SSL_IN_CONTENT_LEN (32768 by default)
3833  * should be sufficient for all practical situations as it allows
3834  * to reassembly a large handshake message (such as a certificate)
3835  * while buffering multiple smaller handshake messages.
3836  *
3837  */
3838 //#define MBEDTLS_SSL_DTLS_MAX_BUFFERING             32768
3839 
3840 //#define MBEDTLS_PSK_MAX_LEN               32 /**< Max size of TLS pre-shared keys, in bytes (default 256 or 384 bits) */
3841 //#define MBEDTLS_SSL_COOKIE_TIMEOUT        60 /**< Default expiration delay of DTLS cookies, in seconds if HAVE_TIME, or in number of cookies issued */
3842 
3843 /**
3844  * Complete list of ciphersuites to use, in order of preference.
3845  *
3846  * \warning No dependency checking is done on that field! This option can only
3847  * be used to restrict the set of available ciphersuites. It is your
3848  * responsibility to make sure the needed modules are active.
3849  *
3850  * Use this to save a few hundred bytes of ROM (default ordering of all
3851  * available ciphersuites) and a few to a few hundred bytes of RAM.
3852  *
3853  * The value below is only an example, not the default.
3854  */
3855 //#define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
3856 
3857 /**
3858  * \def MBEDTLS_SSL_TLS1_3_TICKET_AGE_TOLERANCE
3859  *
3860  * Maximum time difference in milliseconds tolerated between the age of a
3861  * ticket from the server and client point of view.
3862  * From the client point of view, the age of a ticket is the time difference
3863  * between the time when the client proposes to the server to use the ticket
3864  * (time of writing of the Pre-Shared Key Extension including the ticket) and
3865  * the time the client received the ticket from the server.
3866  * From the server point of view, the age of a ticket is the time difference
3867  * between the time when the server receives a proposition from the client
3868  * to use the ticket and the time when the ticket was created by the server.
3869  * The server age is expected to be always greater than the client one and
3870  * MBEDTLS_SSL_TLS1_3_TICKET_AGE_TOLERANCE defines the
3871  * maximum difference tolerated for the server to accept the ticket.
3872  * This is not used in TLS 1.2.
3873  *
3874  */
3875 #define MBEDTLS_SSL_TLS1_3_TICKET_AGE_TOLERANCE 6000
3876 
3877 /**
3878  * \def MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH
3879  *
3880  * Size in bytes of a ticket nonce. This is not used in TLS 1.2.
3881  *
3882  * This must be less than 256.
3883  */
3884 #define MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH 32
3885 
3886 /**
3887  * \def MBEDTLS_SSL_TLS1_3_DEFAULT_NEW_SESSION_TICKETS
3888  *
3889  * Default number of NewSessionTicket messages to be sent by a TLS 1.3 server
3890  * after handshake completion. This is not used in TLS 1.2 and relevant only if
3891  * the MBEDTLS_SSL_SESSION_TICKETS option is enabled.
3892  *
3893  */
3894 #define MBEDTLS_SSL_TLS1_3_DEFAULT_NEW_SESSION_TICKETS 1
3895 
3896 /* X509 options */
3897 //#define MBEDTLS_X509_MAX_INTERMEDIATE_CA   8   /**< Maximum number of intermediate CAs in a verification chain. */
3898 //#define MBEDTLS_X509_MAX_FILE_PATH_LEN     512 /**< Maximum length of a path/filename string in bytes including the null terminator character ('\0'). */
3899 
3900 /**
3901  * Uncomment the macro to let mbed TLS use your alternate implementation of
3902  * mbedtls_platform_zeroize(). This replaces the default implementation in
3903  * platform_util.c.
3904  *
3905  * mbedtls_platform_zeroize() is a widely used function across the library to
3906  * zero a block of memory. The implementation is expected to be secure in the
3907  * sense that it has been written to prevent the compiler from removing calls
3908  * to mbedtls_platform_zeroize() as part of redundant code elimination
3909  * optimizations. However, it is difficult to guarantee that calls to
3910  * mbedtls_platform_zeroize() will not be optimized by the compiler as older
3911  * versions of the C language standards do not provide a secure implementation
3912  * of memset(). Therefore, MBEDTLS_PLATFORM_ZEROIZE_ALT enables users to
3913  * configure their own implementation of mbedtls_platform_zeroize(), for
3914  * example by using directives specific to their compiler, features from newer
3915  * C standards (e.g using memset_s() in C11) or calling a secure memset() from
3916  * their system (e.g explicit_bzero() in BSD).
3917  */
3918 //#define MBEDTLS_PLATFORM_ZEROIZE_ALT
3919 
3920 /**
3921  * Uncomment the macro to let Mbed TLS use your alternate implementation of
3922  * mbedtls_platform_gmtime_r(). This replaces the default implementation in
3923  * platform_util.c.
3924  *
3925  * gmtime() is not a thread-safe function as defined in the C standard. The
3926  * library will try to use safer implementations of this function, such as
3927  * gmtime_r() when available. However, if Mbed TLS cannot identify the target
3928  * system, the implementation of mbedtls_platform_gmtime_r() will default to
3929  * using the standard gmtime(). In this case, calls from the library to
3930  * gmtime() will be guarded by the global mutex mbedtls_threading_gmtime_mutex
3931  * if MBEDTLS_THREADING_C is enabled. We recommend that calls from outside the
3932  * library are also guarded with this mutex to avoid race conditions. However,
3933  * if the macro MBEDTLS_PLATFORM_GMTIME_R_ALT is defined, Mbed TLS will
3934  * unconditionally use the implementation for mbedtls_platform_gmtime_r()
3935  * supplied at compile time.
3936  */
3937 //#define MBEDTLS_PLATFORM_GMTIME_R_ALT
3938 
3939 /**
3940  * Enable the verified implementations of ECDH primitives from Project Everest
3941  * (currently only Curve25519). This feature changes the layout of ECDH
3942  * contexts and therefore is a compatibility break for applications that access
3943  * fields of a mbedtls_ecdh_context structure directly. See also
3944  * MBEDTLS_ECDH_LEGACY_CONTEXT in include/mbedtls/ecdh.h.
3945  */
3946 //#define MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
3947 
3948 /** \} name SECTION: Module configuration options */
3949 
3950 
3951