1 /*
2  * Copyright (c) 2001-2019, Arm Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #ifndef MBEDTLS_CONFIG_H
8 #define MBEDTLS_CONFIG_H
9 
10 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_DEPRECATE)
11 #define _CRT_SECURE_NO_DEPRECATE 1
12 #endif
13 
14 /**
15  * \name SECTION: System support
16  *
17  * This section sets system specific settings.
18  * \{
19  */
20 
21 /**
22  * \def MBEDTLS_HAVE_ASM
23  *
24  * The compiler has support for asm().
25  *
26  * Requires support for asm() in compiler.
27  *
28  * Used in:
29  *      library/aria.c
30  *      library/timing.c
31  *      include/mbedtls/bn_mul.h
32  *
33  * Required by:
34  *      MBEDTLS_AESNI_C
35  *      MBEDTLS_PADLOCK_C
36  *
37  * Comment to disable the use of assembly code.
38  */
39 #define MBEDTLS_HAVE_ASM
40 
41 /**
42  * \def MBEDTLS_NO_UDBL_DIVISION
43  *
44  * The platform lacks support for double-width integer division (64-bit
45  * division on a 32-bit platform, 128-bit division on a 64-bit platform).
46  *
47  * Used in:
48  *      include/mbedtls/bignum.h
49  *      library/bignum.c
50  *
51  * The bignum code uses double-width division to speed up some operations.
52  * Double-width division is often implemented in software that needs to
53  * be linked with the program. The presence of a double-width integer
54  * type is usually detected automatically through preprocessor macros,
55  * but the automatic detection cannot know whether the code needs to
56  * and can be linked with an implementation of division for that type.
57  * By default division is assumed to be usable if the type is present.
58  * Uncomment this option to prevent the use of double-width division.
59  *
60  * Note that division for the native integer type is always required.
61  * Furthermore, a 64-bit type is always required even on a 32-bit
62  * platform, but it need not support multiplication or division. In some
63  * cases it is also desirable to disable some double-width operations. For
64  * example, if double-width division is implemented in software, disabling
65  * it can reduce code size in some embedded targets.
66  */
67 //#define MBEDTLS_NO_UDBL_DIVISION
68 
69 /**
70  * \def MBEDTLS_NO_64BIT_MULTIPLICATION
71  *
72  * The platform lacks support for 32x32 -> 64-bit multiplication.
73  *
74  * Used in:
75  *      library/poly1305.c
76  *
77  * Some parts of the library may use multiplication of two unsigned 32-bit
78  * operands with a 64-bit result in order to speed up computations. On some
79  * platforms, this is not available in hardware and has to be implemented in
80  * software, usually in a library provided by the toolchain.
81  *
82  * Sometimes it is not desirable to have to link to that library. This option
83  * removes the dependency of that library on platforms that lack a hardware
84  * 64-bit multiplier by embedding a software implementation in Mbed TLS.
85  *
86  * Note that depending on the compiler, this may decrease performance compared
87  * to using the library function provided by the toolchain.
88  */
89 //#define MBEDTLS_NO_64BIT_MULTIPLICATION
90 
91 /**
92  * \def MBEDTLS_HAVE_SSE2
93  *
94  * CPU supports SSE2 instruction set.
95  *
96  * Uncomment if the CPU supports SSE2 (IA-32 specific).
97  */
98 //#define MBEDTLS_HAVE_SSE2
99 
100 /**
101  * \def MBEDTLS_HAVE_TIME
102  *
103  * System has time.h and time().
104  * The time does not need to be correct, only time differences are used,
105  * by contrast with MBEDTLS_HAVE_TIME_DATE
106  *
107  * Defining MBEDTLS_HAVE_TIME allows you to specify MBEDTLS_PLATFORM_TIME_ALT,
108  * MBEDTLS_PLATFORM_TIME_MACRO, MBEDTLS_PLATFORM_TIME_TYPE_MACRO and
109  * MBEDTLS_PLATFORM_STD_TIME.
110  *
111  * Comment if your system does not support time functions
112  */
113 #define MBEDTLS_HAVE_TIME
114 
115 /**
116  * \def MBEDTLS_HAVE_TIME_DATE
117  *
118  * System has time.h, time(), and an implementation for
119  * mbedtls_platform_gmtime_r() (see below).
120  * The time needs to be correct (not necesarily very accurate, but at least
121  * the date should be correct). This is used to verify the validity period of
122  * X.509 certificates.
123  *
124  * Comment if your system does not have a correct clock.
125  *
126  * \note mbedtls_platform_gmtime_r() is an abstraction in platform_util.h that
127  * behaves similarly to the gmtime_r() function from the C standard. Refer to
128  * the documentation for mbedtls_platform_gmtime_r() for more information.
129  *
130  * \note It is possible to configure an implementation for
131  * mbedtls_platform_gmtime_r() at compile-time by using the macro
132  * MBEDTLS_PLATFORM_GMTIME_R_ALT.
133  */
134 #define MBEDTLS_HAVE_TIME_DATE
135 
136 /**
137  * \def MBEDTLS_PLATFORM_MEMORY
138  *
139  * Enable the memory allocation layer.
140  *
141  * By default mbed TLS uses the system-provided calloc() and free().
142  * This allows different allocators (self-implemented or provided) to be
143  * provided to the platform abstraction layer.
144  *
145  * Enabling MBEDTLS_PLATFORM_MEMORY without the
146  * MBEDTLS_PLATFORM_{FREE,CALLOC}_MACROs will provide
147  * "mbedtls_platform_set_calloc_free()" allowing you to set an alternative calloc() and
148  * free() function pointer at runtime.
149  *
150  * Enabling MBEDTLS_PLATFORM_MEMORY and specifying
151  * MBEDTLS_PLATFORM_{CALLOC,FREE}_MACROs will allow you to specify the
152  * alternate function at compile time.
153  *
154  * Requires: MBEDTLS_PLATFORM_C
155  *
156  * Enable this layer to allow use of alternative memory allocators.
157  */
158 #define MBEDTLS_PLATFORM_MEMORY
159 
160 /**
161  * \def MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
162  *
163  * Do not assign standard functions in the platform layer (e.g. calloc() to
164  * MBEDTLS_PLATFORM_STD_CALLOC and printf() to MBEDTLS_PLATFORM_STD_PRINTF)
165  *
166  * This makes sure there are no linking errors on platforms that do not support
167  * these functions. You will HAVE to provide alternatives, either at runtime
168  * via the platform_set_xxx() functions or at compile time by setting
169  * the MBEDTLS_PLATFORM_STD_XXX defines, or enabling a
170  * MBEDTLS_PLATFORM_XXX_MACRO.
171  *
172  * Requires: MBEDTLS_PLATFORM_C
173  *
174  * Uncomment to prevent default assignment of standard functions in the
175  * platform layer.
176  */
177 //#define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
178 
179 /**
180  * \def MBEDTLS_PLATFORM_EXIT_ALT
181  *
182  * MBEDTLS_PLATFORM_XXX_ALT: Uncomment a macro to let mbed TLS support the
183  * function in the platform abstraction layer.
184  *
185  * Example: In case you uncomment MBEDTLS_PLATFORM_PRINTF_ALT, mbed TLS will
186  * provide a function "mbedtls_platform_set_printf()" that allows you to set an
187  * alternative printf function pointer.
188  *
189  * All these define require MBEDTLS_PLATFORM_C to be defined!
190  *
191  * \note MBEDTLS_PLATFORM_SNPRINTF_ALT is required on Windows;
192  * it will be enabled automatically by check_config.h
193  *
194  * \warning MBEDTLS_PLATFORM_XXX_ALT cannot be defined at the same time as
195  * MBEDTLS_PLATFORM_XXX_MACRO!
196  *
197  * Requires: MBEDTLS_PLATFORM_TIME_ALT requires MBEDTLS_HAVE_TIME
198  *
199  * Uncomment a macro to enable alternate implementation of specific base
200  * platform function
201  */
202 //#define MBEDTLS_PLATFORM_EXIT_ALT
203 //#define MBEDTLS_PLATFORM_TIME_ALT
204 //#define MBEDTLS_PLATFORM_FPRINTF_ALT
205 //#define MBEDTLS_PLATFORM_PRINTF_ALT
206 //#define MBEDTLS_PLATFORM_SNPRINTF_ALT
207 //#define MBEDTLS_PLATFORM_NV_SEED_ALT
208 //#define MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT
209 
210 /**
211  * \def MBEDTLS_DEPRECATED_WARNING
212  *
213  * Mark deprecated functions so that they generate a warning if used.
214  * Functions deprecated in one version will usually be removed in the next
215  * version. You can enable this to help you prepare the transition to a new
216  * major version by making sure your code is not using these functions.
217  *
218  * This only works with GCC and Clang. With other compilers, you may want to
219  * use MBEDTLS_DEPRECATED_REMOVED
220  *
221  * Uncomment to get warnings on using deprecated functions.
222  */
223 //#define MBEDTLS_DEPRECATED_WARNING
224 
225 /**
226  * \def MBEDTLS_DEPRECATED_REMOVED
227  *
228  * Remove deprecated functions so that they generate an error if used.
229  * Functions deprecated in one version will usually be removed in the next
230  * version. You can enable this to help you prepare the transition to a new
231  * major version by making sure your code is not using these functions.
232  *
233  * Uncomment to get errors on using deprecated functions.
234  */
235 //#define MBEDTLS_DEPRECATED_REMOVED
236 
237 /**
238  * \def MBEDTLS_CHECK_PARAMS
239  *
240  * This configuration option controls whether the library validates more of
241  * the parameters passed to it.
242  *
243  * When this flag is not defined, the library only attempts to validate an
244  * input parameter if: (1) they may come from the outside world (such as the
245  * network, the filesystem, etc.) or (2) not validating them could result in
246  * internal memory errors such as overflowing a buffer controlled by the
247  * library. On the other hand, it doesn't attempt to validate parameters whose
248  * values are fully controlled by the application (such as pointers).
249  *
250  * When this flag is defined, the library additionally attempts to validate
251  * parameters that are fully controlled by the application, and should always
252  * be valid if the application code is fully correct and trusted.
253  *
254  * For example, when a function accepts as input a pointer to a buffer that may
255  * contain untrusted data, and its documentation mentions that this pointer
256  * must not be NULL:
257  * - the pointer is checked to be non-NULL only if this option is enabled
258  * - the content of the buffer is always validated
259  *
260  * When this flag is defined, if a library function receives a parameter that
261  * is invalid, it will:
262  * - invoke the macro MBEDTLS_PARAM_FAILED() which by default expands to a
263  *   call to the function mbedtls_param_failed()
264  * - immediately return (with a specific error code unless the function
265  *   returns void and can't communicate an error).
266  *
267  * When defining this flag, you also need to:
268  * - either provide a definition of the function mbedtls_param_failed() in
269  *   your application (see platform_util.h for its prototype) as the library
270  *   calls that function, but does not provide a default definition for it,
271  * - or provide a different definition of the macro MBEDTLS_PARAM_FAILED()
272  *   below if the above mechanism is not flexible enough to suit your needs.
273  *   See the documentation of this macro later in this file.
274  *
275  * Uncomment to enable validation of application-controlled parameters.
276  */
277 //#define MBEDTLS_CHECK_PARAMS
278 
279 /* \} name SECTION: System support */
280 
281 /**
282  * \name SECTION: mbed TLS feature support
283  *
284  * This section sets support for features that are or are not needed
285  * within the modules that are enabled.
286  * \{
287  */
288 
289 /**
290  * \def MBEDTLS_TIMING_ALT
291  *
292  * Uncomment to provide your own alternate implementation for mbedtls_timing_hardclock(),
293  * mbedtls_timing_get_timer(), mbedtls_set_alarm(), mbedtls_set/get_delay()
294  *
295  * Only works if you have MBEDTLS_TIMING_C enabled.
296  *
297  * You will need to provide a header "timing_alt.h" and an implementation at
298  * compile time.
299  */
300 //#define MBEDTLS_TIMING_ALT
301 
302 /**
303  * \def MBEDTLS_AES_ALT
304  *
305  * MBEDTLS__MODULE_NAME__ALT: Uncomment a macro to let mbed TLS use your
306  * alternate core implementation of a symmetric crypto, an arithmetic or hash
307  * module (e.g. platform specific assembly optimized implementations). Keep
308  * in mind that the function prototypes should remain the same.
309  *
310  * This replaces the whole module. If you only want to replace one of the
311  * functions, use one of the MBEDTLS__FUNCTION_NAME__ALT flags.
312  *
313  * Example: In case you uncomment MBEDTLS_AES_ALT, mbed TLS will no longer
314  * provide the "struct mbedtls_aes_context" definition and omit the base
315  * function declarations and implementations. "aes_alt.h" will be included from
316  * "aes.h" to include the new function definitions.
317  *
318  * Uncomment a macro to enable alternate implementation of the corresponding
319  * module.
320  *
321  * \warning   MD2, MD4, MD5, ARC4, DES and SHA-1 are considered weak and their
322  *            use constitutes a security risk. If possible, we recommend
323  *            avoiding dependencies on them, and considering stronger message
324  *            digests and ciphers instead.
325  *
326  */
327 #define MBEDTLS_AES_ALT
328 //#define MBEDTLS_ARC4_ALT
329 //#define MBEDTLS_ARIA_ALT
330 //#define MBEDTLS_BLOWFISH_ALT
331 //#define MBEDTLS_CAMELLIA_ALT
332 #define MBEDTLS_CCM_ALT
333 #define MBEDTLS_CHACHA20_ALT
334 #define MBEDTLS_CHACHAPOLY_ALT
335 #define MBEDTLS_CMAC_ALT
336 //#define MBEDTLS_DES_ALT
337 #define MBEDTLS_DHM_ALT
338 //#define MBEDTLS_ECJPAKE_ALT
339 #define MBEDTLS_GCM_ALT
340 //#define MBEDTLS_NIST_KW_ALT
341 //#define MBEDTLS_MD2_ALT
342 //#define MBEDTLS_MD4_ALT
343 //#define MBEDTLS_MD5_ALT
344 #define MBEDTLS_POLY1305_ALT
345 //#define MBEDTLS_RIPEMD160_ALT
346 //#define MBEDTLS_XTEA_ALT
347 #define MBEDTLS_SHA1_ALT
348 #define MBEDTLS_SHA256_ALT
349 //#define MBEDTLS_SHA512_ALT
350 #define MBEDTLS_RSA_ALT
351 
352 
353 /*
354  * When replacing the elliptic curve module, pleace consider, that it is
355  * implemented with two .c files:
356  *      - ecp.c
357  *      - ecp_curves.c
358  * You can replace them very much like all the other MBEDTLS__MODULE_NAME__ALT
359  * macros as described above. The only difference is that you have to make sure
360  * that you provide functionality for both .c files.
361  */
362 //#define MBEDTLS_ECP_ALT
363 
364 /**
365  * \def MBEDTLS_MD2_PROCESS_ALT
366  *
367  * MBEDTLS__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use you
368  * alternate core implementation of symmetric crypto or hash function. Keep in
369  * mind that function prototypes should remain the same.
370  *
371  * This replaces only one function. The header file from mbed TLS is still
372  * used, in contrast to the MBEDTLS__MODULE_NAME__ALT flags.
373  *
374  * Example: In case you uncomment MBEDTLS_SHA256_PROCESS_ALT, mbed TLS will
375  * no longer provide the mbedtls_sha1_process() function, but it will still provide
376  * the other function (using your mbedtls_sha1_process() function) and the definition
377  * of mbedtls_sha1_context, so your implementation of mbedtls_sha1_process must be compatible
378  * with this definition.
379  *
380  * \note Because of a signature change, the core AES encryption and decryption routines are
381  *       currently named mbedtls_aes_internal_encrypt and mbedtls_aes_internal_decrypt,
382  *       respectively. When setting up alternative implementations, these functions should
383  *       be overriden, but the wrapper functions mbedtls_aes_decrypt and mbedtls_aes_encrypt
384  *       must stay untouched.
385  *
386  * \note If you use the AES_xxx_ALT macros, then is is recommended to also set
387  *       MBEDTLS_AES_ROM_TABLES in order to help the linker garbage-collect the AES
388  *       tables.
389  *
390  * Uncomment a macro to enable alternate implementation of the corresponding
391  * function.
392  *
393  * \warning   MD2, MD4, MD5, DES and SHA-1 are considered weak and their use
394  *            constitutes a security risk. If possible, we recommend avoiding
395  *            dependencies on them, and considering stronger message digests
396  *            and ciphers instead.
397  *
398  */
399 //#define MBEDTLS_MD2_PROCESS_ALT
400 //#define MBEDTLS_MD4_PROCESS_ALT
401 //#define MBEDTLS_MD5_PROCESS_ALT
402 //#define MBEDTLS_RIPEMD160_PROCESS_ALT
403 //#define MBEDTLS_SHA1_PROCESS_ALT
404 //#define MBEDTLS_SHA256_PROCESS_ALT
405 //#define MBEDTLS_SHA512_PROCESS_ALT
406 //#define MBEDTLS_DES_SETKEY_ALT
407 //#define MBEDTLS_DES_CRYPT_ECB_ALT
408 //#define MBEDTLS_DES3_CRYPT_ECB_ALT
409 //#define MBEDTLS_AES_SETKEY_ENC_ALT
410 //#define MBEDTLS_AES_SETKEY_DEC_ALT
411 //#define MBEDTLS_AES_ENCRYPT_ALT
412 //#define MBEDTLS_AES_DECRYPT_ALT
413 #define MBEDTLS_ECDH_GEN_PUBLIC_ALT
414 #define MBEDTLS_ECDH_COMPUTE_SHARED_ALT
415 #define MBEDTLS_ECDSA_VERIFY_ALT
416 #define MBEDTLS_ECDSA_SIGN_ALT
417 #define MBEDTLS_ECDSA_GENKEY_ALT
418 
419 /**
420  * \def MBEDTLS_ECP_INTERNAL_ALT
421  *
422  * Expose a part of the internal interface of the Elliptic Curve Point module.
423  *
424  * MBEDTLS_ECP__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use your
425  * alternative core implementation of elliptic curve arithmetic. Keep in mind
426  * that function prototypes should remain the same.
427  *
428  * This partially replaces one function. The header file from mbed TLS is still
429  * used, in contrast to the MBEDTLS_ECP_ALT flag. The original implementation
430  * is still present and it is used for group structures not supported by the
431  * alternative.
432  *
433  * Any of these options become available by defining MBEDTLS_ECP_INTERNAL_ALT
434  * and implementing the following functions:
435  *      unsigned char mbedtls_internal_ecp_grp_capable(
436  *          const mbedtls_ecp_group *grp )
437  *      int  mbedtls_internal_ecp_init( const mbedtls_ecp_group *grp )
438  *      void mbedtls_internal_ecp_free( const mbedtls_ecp_group *grp )
439  * The mbedtls_internal_ecp_grp_capable function should return 1 if the
440  * replacement functions implement arithmetic for the given group and 0
441  * otherwise.
442  * The functions mbedtls_internal_ecp_init and mbedtls_internal_ecp_free are
443  * called before and after each point operation and provide an opportunity to
444  * implement optimized set up and tear down instructions.
445  *
446  * Example: In case you uncomment MBEDTLS_ECP_INTERNAL_ALT and
447  * MBEDTLS_ECP_DOUBLE_JAC_ALT, mbed TLS will still provide the ecp_double_jac
448  * function, but will use your mbedtls_internal_ecp_double_jac if the group is
449  * supported (your mbedtls_internal_ecp_grp_capable function returns 1 when
450  * receives it as an argument). If the group is not supported then the original
451  * implementation is used. The other functions and the definition of
452  * mbedtls_ecp_group and mbedtls_ecp_point will not change, so your
453  * implementation of mbedtls_internal_ecp_double_jac and
454  * mbedtls_internal_ecp_grp_capable must be compatible with this definition.
455  *
456  * Uncomment a macro to enable alternate implementation of the corresponding
457  * function.
458  */
459 /* Required for all the functions in this section */
460 //#define MBEDTLS_ECP_INTERNAL_ALT
461 /* Support for Weierstrass curves with Jacobi representation */
462 //#define MBEDTLS_ECP_RANDOMIZE_JAC_ALT
463 //#define MBEDTLS_ECP_ADD_MIXED_ALT
464 //#define MBEDTLS_ECP_DOUBLE_JAC_ALT
465 //#define MBEDTLS_ECP_NORMALIZE_JAC_MANY_ALT
466 //#define MBEDTLS_ECP_NORMALIZE_JAC_ALT
467 /* Support for curves with Montgomery arithmetic */
468 //#define MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT
469 //#define MBEDTLS_ECP_RANDOMIZE_MXZ_ALT
470 //#define MBEDTLS_ECP_NORMALIZE_MXZ_ALT
471 
472 /**
473  * \def MBEDTLS_TEST_NULL_ENTROPY
474  *
475  * Enables testing and use of mbed TLS without any configured entropy sources.
476  * This permits use of the library on platforms before an entropy source has
477  * been integrated (see for example the MBEDTLS_ENTROPY_HARDWARE_ALT or the
478  * MBEDTLS_ENTROPY_NV_SEED switches).
479  *
480  * WARNING! This switch MUST be disabled in production builds, and is suitable
481  * only for development.
482  * Enabling the switch negates any security provided by the library.
483  *
484  * Requires MBEDTLS_ENTROPY_C, MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
485  *
486  */
487 //#define MBEDTLS_TEST_NULL_ENTROPY
488 
489 /**
490  * \def MBEDTLS_ENTROPY_HARDWARE_ALT
491  *
492  * Uncomment this macro to let mbed TLS use your own implementation of a
493  * hardware entropy collector.
494  *
495  * Your function must be called \c mbedtls_hardware_poll(), have the same
496  * prototype as declared in entropy_poll.h, and accept NULL as first argument.
497  *
498  * Uncomment to use your own hardware entropy collector.
499  */
500 #define MBEDTLS_ENTROPY_HARDWARE_ALT
501 
502 /**
503  * \def MBEDTLS_AES_ROM_TABLES
504  *
505  * Use precomputed AES tables stored in ROM.
506  *
507  * Uncomment this macro to use precomputed AES tables stored in ROM.
508  * Comment this macro to generate AES tables in RAM at runtime.
509  *
510  * Tradeoff: Using precomputed ROM tables reduces RAM usage by ~8kb
511  * (or ~2kb if \c MBEDTLS_AES_FEWER_TABLES is used) and reduces the
512  * initialization time before the first AES operation can be performed.
513  * It comes at the cost of additional ~8kb ROM use (resp. ~2kb if \c
514  * MBEDTLS_AES_FEWER_TABLES below is used), and potentially degraded
515  * performance if ROM access is slower than RAM access.
516  *
517  * This option is independent of \c MBEDTLS_AES_FEWER_TABLES.
518  *
519  */
520 //#define MBEDTLS_AES_ROM_TABLES
521 
522 /**
523  * \def MBEDTLS_AES_FEWER_TABLES
524  *
525  * Use less ROM/RAM for AES tables.
526  *
527  * Uncommenting this macro omits 75% of the AES tables from
528  * ROM / RAM (depending on the value of \c MBEDTLS_AES_ROM_TABLES)
529  * by computing their values on the fly during operations
530  * (the tables are entry-wise rotations of one another).
531  *
532  * Tradeoff: Uncommenting this reduces the RAM / ROM footprint
533  * by ~6kb but at the cost of more arithmetic operations during
534  * runtime. Specifically, one has to compare 4 accesses within
535  * different tables to 4 accesses with additional arithmetic
536  * operations within the same table. The performance gain/loss
537  * depends on the system and memory details.
538  *
539  * This option is independent of \c MBEDTLS_AES_ROM_TABLES.
540  *
541  */
542 //#define MBEDTLS_AES_FEWER_TABLES
543 
544 /**
545  * \def MBEDTLS_CAMELLIA_SMALL_MEMORY
546  *
547  * Use less ROM for the Camellia implementation (saves about 768 bytes).
548  *
549  * Uncomment this macro to use less memory for Camellia.
550  */
551 //#define MBEDTLS_CAMELLIA_SMALL_MEMORY
552 
553 /**
554  * \def MBEDTLS_CIPHER_MODE_XTS
555  *
556  * Enable Cipher Block XTS for symmetric ciphers.
557  */
558 //#define MBEDTLS_CIPHER_MODE_XTS
559 
560 /**
561  * \def MBEDTLS_CIPHER_MODE_CBC
562  *
563  * Enable Cipher Block Chaining mode (CBC) for symmetric ciphers.
564  */
565 #define MBEDTLS_CIPHER_MODE_CBC
566 
567 /**
568  * \def MBEDTLS_CIPHER_MODE_CFB
569  *
570  * Enable Cipher Feedback mode (CFB) for symmetric ciphers.
571  */
572 //#define MBEDTLS_CIPHER_MODE_CFB
573 
574 /**
575  * \def MBEDTLS_CIPHER_MODE_CTR
576  *
577  * Enable Counter Block Cipher mode (CTR) for symmetric ciphers.
578  */
579 #define MBEDTLS_CIPHER_MODE_CTR
580 
581 /**
582  * \def MBEDTLS_CIPHER_MODE_OFB
583  *
584  * Enable Output Feedback Cipher mode (OFB) for symmetric
585  * ciphers.
586  */
587 #define MBEDTLS_CIPHER_MODE_OFB
588 
589 /**
590  * \def MBEDTLS_CIPHER_NULL_CIPHER
591  *
592  * Enable NULL cipher.
593  * Warning: Only do so when you know what you are doing. This allows for
594  * encryption or channels without any security!
595  *
596  * Requires MBEDTLS_ENABLE_WEAK_CIPHERSUITES as well to enable
597  * the following ciphersuites:
598  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_NULL_SHA
599  *      MBEDTLS_TLS_ECDH_RSA_WITH_NULL_SHA
600  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_NULL_SHA
601  *      MBEDTLS_TLS_ECDHE_RSA_WITH_NULL_SHA
602  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA384
603  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA256
604  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA
605  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA384
606  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA256
607  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA
608  *      MBEDTLS_TLS_RSA_WITH_NULL_SHA256
609  *      MBEDTLS_TLS_RSA_WITH_NULL_SHA
610  *      MBEDTLS_TLS_RSA_WITH_NULL_MD5
611  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA384
612  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA256
613  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA
614  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA384
615  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA256
616  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA
617  *
618  * Uncomment this macro to enable the NULL cipher and ciphersuites
619  */
620 //#define MBEDTLS_CIPHER_NULL_CIPHER
621 
622 /**
623  * \def MBEDTLS_CIPHER_PADDING_PKCS7
624  *
625  * MBEDTLS_CIPHER_PADDING_XXX: Uncomment or comment macros to add support for
626  * specific padding modes in the cipher layer with cipher modes that support
627  * padding (e.g. CBC)
628  *
629  * If you disable all padding modes, only full blocks can be used with CBC.
630  *
631  * Enable padding modes in the cipher layer.
632  */
633 //#define MBEDTLS_CIPHER_PADDING_PKCS7
634 //#define MBEDTLS_CIPHER_PADDING_ONE_AND_ZEROS
635 //#define MBEDTLS_CIPHER_PADDING_ZEROS_AND_LEN
636 //#define MBEDTLS_CIPHER_PADDING_ZEROS
637 
638 /**
639  * \def MBEDTLS_ENABLE_WEAK_CIPHERSUITES
640  *
641  * Enable weak ciphersuites in SSL / TLS.
642  * Warning: Only do so when you know what you are doing. This allows for
643  * channels with virtually no security at all!
644  *
645  * This enables the following ciphersuites:
646  *      MBEDTLS_TLS_RSA_WITH_DES_CBC_SHA
647  *      MBEDTLS_TLS_DHE_RSA_WITH_DES_CBC_SHA
648  *
649  * Uncomment this macro to enable weak ciphersuites
650  *
651  * \warning   DES is considered a weak cipher and its use constitutes a
652  *            security risk. We recommend considering stronger ciphers instead.
653  */
654 //#define MBEDTLS_ENABLE_WEAK_CIPHERSUITES
655 
656 /**
657  * \def MBEDTLS_REMOVE_ARC4_CIPHERSUITES
658  *
659  * Remove RC4 ciphersuites by default in SSL / TLS.
660  * This flag removes the ciphersuites based on RC4 from the default list as
661  * returned by mbedtls_ssl_list_ciphersuites(). However, it is still possible to
662  * enable (some of) them with mbedtls_ssl_conf_ciphersuites() by including them
663  * explicitly.
664  *
665  * Uncomment this macro to remove RC4 ciphersuites by default.
666  */
667 //#define MBEDTLS_REMOVE_ARC4_CIPHERSUITES
668 
669 /**
670  * \def MBEDTLS_ECP_DP_SECP192R1_ENABLED
671  *
672  * MBEDTLS_ECP_XXXX_ENABLED: Enables specific curves within the Elliptic Curve
673  * module.  By default all supported curves are enabled.
674  *
675  * Comment macros to disable the curve and functions for it
676  */
677 
678 #define MBEDTLS_ECP_DP_SECP192R1_ENABLED
679 #define MBEDTLS_ECP_DP_SECP224R1_ENABLED
680 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
681 #define MBEDTLS_ECP_DP_SECP384R1_ENABLED
682 #define MBEDTLS_ECP_DP_SECP521R1_ENABLED
683 #define MBEDTLS_ECP_DP_SECP192K1_ENABLED
684 #define MBEDTLS_ECP_DP_SECP224K1_ENABLED
685 #define MBEDTLS_ECP_DP_SECP256K1_ENABLED
686 /* CryptoCell only supports BP256R1 brainpool curve at this stage */
687 #define MBEDTLS_ECP_DP_BP256R1_ENABLED
688 //#define MBEDTLS_ECP_DP_BP384R1_ENABLED
689 //#define MBEDTLS_ECP_DP_BP512R1_ENABLED
690 #define MBEDTLS_ECP_DP_CURVE25519_ENABLED
691 //#define MBEDTLS_ECP_DP_CURVE448_ENABLED
692 
693 /**
694  * \def MBEDTLS_ECP_NIST_OPTIM
695  *
696  * Enable specific 'modulo p' routines for each NIST prime.
697  * Depending on the prime and architecture, makes operations 4 to 8 times
698  * faster on the corresponding curve.
699  *
700  * Comment this macro to disable NIST curves optimization.
701  */
702 #define MBEDTLS_ECP_NIST_OPTIM
703 
704 /**
705  * \def MBEDTLS_ECP_RESTARTABLE
706  *
707  * Enable "non-blocking" ECC operations that can return early and be resumed.
708  *
709  * This allows various functions to pause by returning
710  * #MBEDTLS_ERR_ECP_IN_PROGRESS (or, for functions in the SSL module,
711  * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) and then be called later again in
712  * order to further progress and eventually complete their operation. This is
713  * controlled through mbedtls_ecp_set_max_ops() which limits the maximum
714  * number of ECC operations a function may perform before pausing; see
715  * mbedtls_ecp_set_max_ops() for more information.
716  *
717  * This is useful in non-threaded environments if you want to avoid blocking
718  * for too long on ECC (and, hence, X.509 or SSL/TLS) operations.
719  *
720  * Uncomment this macro to enable restartable ECC computations.
721  *
722  * \note  This option only works with the default software implementation of
723  *        elliptic curve functionality. It is incompatible with
724  *        MBEDTLS_ECP_ALT, MBEDTLS_ECDH_XXX_ALT and MBEDTLS_ECDSA_XXX_ALT.
725  */
726 //#define MBEDTLS_ECP_RESTARTABLE
727 
728 /**
729  * \def MBEDTLS_ECDSA_DETERMINISTIC
730  *
731  * Enable deterministic ECDSA (RFC 6979).
732  * Standard ECDSA is "fragile" in the sense that lack of entropy when signing
733  * may result in a compromise of the long-term signing key. This is avoided by
734  * the deterministic variant.
735  *
736  * Requires: MBEDTLS_HMAC_DRBG_C
737  *
738  * Comment this macro to disable deterministic ECDSA.
739  */
740 #define MBEDTLS_ECDSA_DETERMINISTIC
741 
742 /**
743  * \def MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
744  *
745  * Enable the PSK based ciphersuite modes in SSL / TLS.
746  *
747  * This enables the following ciphersuites (if other requisites are
748  * enabled as well):
749  *      MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384
750  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384
751  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA
752  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384
753  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384
754  *      MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256
755  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256
756  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA
757  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256
758  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256
759  *      MBEDTLS_TLS_PSK_WITH_3DES_EDE_CBC_SHA
760  *      MBEDTLS_TLS_PSK_WITH_RC4_128_SHA
761  */
762 //#define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
763 
764 /**
765  * \def MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
766  *
767  * Enable the DHE-PSK based ciphersuite modes in SSL / TLS.
768  *
769  * Requires: MBEDTLS_DHM_C
770  *
771  * This enables the following ciphersuites (if other requisites are
772  * enabled as well):
773  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
774  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
775  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA
776  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384
777  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
778  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
779  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
780  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA
781  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256
782  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
783  *      MBEDTLS_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA
784  *      MBEDTLS_TLS_DHE_PSK_WITH_RC4_128_SHA
785  *
786  * \warning    Using DHE constitutes a security risk as it
787  *             is not possible to validate custom DH parameters.
788  *             If possible, it is recommended users should consider
789  *             preferring other methods of key exchange.
790  *             See dhm.h for more details.
791  *
792  */
793 //#define MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
794 
795 /**
796  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
797  *
798  * Enable the ECDHE-PSK based ciphersuite modes in SSL / TLS.
799  *
800  * Requires: MBEDTLS_ECDH_C
801  *
802  * This enables the following ciphersuites (if other requisites are
803  * enabled as well):
804  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384
805  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA
806  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
807  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256
808  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA
809  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
810  *      MBEDTLS_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA
811  *      MBEDTLS_TLS_ECDHE_PSK_WITH_RC4_128_SHA
812  */
813 //#define MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
814 
815 /**
816  * \def MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
817  *
818  * Enable the RSA-PSK based ciphersuite modes in SSL / TLS.
819  *
820  * Requires: MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
821  *           MBEDTLS_X509_CRT_PARSE_C
822  *
823  * This enables the following ciphersuites (if other requisites are
824  * enabled as well):
825  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384
826  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384
827  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA
828  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384
829  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384
830  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256
831  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256
832  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA
833  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256
834  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256
835  *      MBEDTLS_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA
836  *      MBEDTLS_TLS_RSA_PSK_WITH_RC4_128_SHA
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  *      MBEDTLS_TLS_RSA_WITH_3DES_EDE_CBC_SHA
863  *      MBEDTLS_TLS_RSA_WITH_RC4_128_SHA
864  *      MBEDTLS_TLS_RSA_WITH_RC4_128_MD5
865  */
866 //#define MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
867 
868 /**
869  * \def MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
870  *
871  * Enable the DHE-RSA based ciphersuite modes in SSL / TLS.
872  *
873  * Requires: MBEDTLS_DHM_C, MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
874  *           MBEDTLS_X509_CRT_PARSE_C
875  *
876  * This enables the following ciphersuites (if other requisites are
877  * enabled as well):
878  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
879  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
880  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
881  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
882  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
883  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
884  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
885  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
886  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
887  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
888  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
889  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
890  *      MBEDTLS_TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
891  *
892  * \warning    Using DHE constitutes a security risk as it
893  *             is not possible to validate custom DH parameters.
894  *             If possible, it is recommended users should consider
895  *             preferring other methods of key exchange.
896  *             See dhm.h for more details.
897  *
898  */
899 //#define MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
900 
901 /**
902  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
903  *
904  * Enable the ECDHE-RSA based ciphersuite modes in SSL / TLS.
905  *
906  * Requires: MBEDTLS_ECDH_C, MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
907  *           MBEDTLS_X509_CRT_PARSE_C
908  *
909  * This enables the following ciphersuites (if other requisites are
910  * enabled as well):
911  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
912  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
913  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
914  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
915  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
916  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
917  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
918  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
919  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
920  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
921  *      MBEDTLS_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
922  *      MBEDTLS_TLS_ECDHE_RSA_WITH_RC4_128_SHA
923  */
924 //#define MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
925 
926 /**
927  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
928  *
929  * Enable the ECDHE-ECDSA based ciphersuite modes in SSL / TLS.
930  *
931  * Requires: MBEDTLS_ECDH_C, MBEDTLS_ECDSA_C, MBEDTLS_X509_CRT_PARSE_C,
932  *
933  * This enables the following ciphersuites (if other requisites are
934  * enabled as well):
935  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
936  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
937  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
938  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
939  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
940  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
941  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
942  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
943  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
944  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
945  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
946  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
947  */
948 //#define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
949 
950 /**
951  * \def MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
952  *
953  * Enable the ECDH-ECDSA based ciphersuite modes in SSL / TLS.
954  *
955  * Requires: MBEDTLS_ECDH_C, MBEDTLS_X509_CRT_PARSE_C
956  *
957  * This enables the following ciphersuites (if other requisites are
958  * enabled as well):
959  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_RC4_128_SHA
960  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
961  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
962  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
963  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
964  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
965  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
966  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
967  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
968  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
969  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
970  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
971  */
972 //#define MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
973 
974 /**
975  * \def MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
976  *
977  * Enable the ECDH-RSA based ciphersuite modes in SSL / TLS.
978  *
979  * Requires: MBEDTLS_ECDH_C, MBEDTLS_X509_CRT_PARSE_C
980  *
981  * This enables the following ciphersuites (if other requisites are
982  * enabled as well):
983  *      MBEDTLS_TLS_ECDH_RSA_WITH_RC4_128_SHA
984  *      MBEDTLS_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
985  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
986  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
987  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
988  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
989  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
990  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
991  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256
992  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384
993  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256
994  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384
995  */
996 //#define MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
997 
998 /**
999  * \def MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
1000  *
1001  * Enable the ECJPAKE based ciphersuite modes in SSL / TLS.
1002  *
1003  * \warning This is currently experimental. EC J-PAKE support is based on the
1004  * Thread v1.0.0 specification; incompatible changes to the specification
1005  * might still happen. For this reason, this is disabled by default.
1006  *
1007  * Requires: MBEDTLS_ECJPAKE_C
1008  *           MBEDTLS_SHA256_C
1009  *           MBEDTLS_ECP_DP_SECP256R1_ENABLED
1010  *
1011  * This enables the following ciphersuites (if other requisites are
1012  * enabled as well):
1013  *      MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8
1014  */
1015 //#define MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
1016 
1017 /**
1018  * \def MBEDTLS_PK_PARSE_EC_EXTENDED
1019  *
1020  * Enhance support for reading EC keys using variants of SEC1 not allowed by
1021  * RFC 5915 and RFC 5480.
1022  *
1023  * Currently this means parsing the SpecifiedECDomain choice of EC
1024  * parameters (only known groups are supported, not arbitrary domains, to
1025  * avoid validation issues).
1026  *
1027  * Disable if you only need to support RFC 5915 + 5480 key formats.
1028  */
1029 //#define MBEDTLS_PK_PARSE_EC_EXTENDED
1030 
1031 /**
1032  * \def MBEDTLS_ERROR_STRERROR_DUMMY
1033  *
1034  * Enable a dummy error function to make use of mbedtls_strerror() in
1035  * third party libraries easier when MBEDTLS_ERROR_C is disabled
1036  * (no effect when MBEDTLS_ERROR_C is enabled).
1037  *
1038  * You can safely disable this if MBEDTLS_ERROR_C is enabled, or if you're
1039  * not using mbedtls_strerror() or error_strerror() in your application.
1040  *
1041  * Disable if you run into name conflicts and want to really remove the
1042  * mbedtls_strerror()
1043  */
1044 #define MBEDTLS_ERROR_STRERROR_DUMMY
1045 
1046 /**
1047  * \def MBEDTLS_GENPRIME
1048  *
1049  * Enable the prime-number generation code.
1050  *
1051  * Requires: MBEDTLS_BIGNUM_C
1052  */
1053 #define MBEDTLS_GENPRIME
1054 
1055 /**
1056  * \def MBEDTLS_FS_IO
1057  *
1058  * Enable functions that use the filesystem.
1059  */
1060 //#define MBEDTLS_FS_IO
1061 
1062 /**
1063  * \def MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
1064  *
1065  * Do not add default entropy sources. These are the platform specific,
1066  * mbedtls_timing_hardclock and HAVEGE based poll functions.
1067  *
1068  * This is useful to have more control over the added entropy sources in an
1069  * application.
1070  *
1071  * Uncomment this macro to prevent loading of default entropy functions.
1072  */
1073 //#define MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
1074 
1075 /**
1076  * \def MBEDTLS_NO_PLATFORM_ENTROPY
1077  *
1078  * Do not use built-in platform entropy functions.
1079  * This is useful if your platform does not support
1080  * standards like the /dev/urandom or Windows CryptoAPI.
1081  *
1082  * Uncomment this macro to disable the built-in platform entropy functions.
1083  */
1084 //#define MBEDTLS_NO_PLATFORM_ENTROPY
1085 
1086 /**
1087  * \def MBEDTLS_ENTROPY_FORCE_SHA256
1088  *
1089  * Force the entropy accumulator to use a SHA-256 accumulator instead of the
1090  * default SHA-512 based one (if both are available).
1091  *
1092  * Requires: MBEDTLS_SHA256_C
1093  *
1094  * On 32-bit systems SHA-256 can be much faster than SHA-512. Use this option
1095  * if you have performance concerns.
1096  *
1097  * This option is only useful if both MBEDTLS_SHA256_C and
1098  * MBEDTLS_SHA512_C are defined. Otherwise the available hash module is used.
1099  */
1100 //#define MBEDTLS_ENTROPY_FORCE_SHA256
1101 
1102 /**
1103  * \def MBEDTLS_ENTROPY_NV_SEED
1104  *
1105  * Enable the non-volatile (NV) seed file-based entropy source.
1106  * (Also enables the NV seed read/write functions in the platform layer)
1107  *
1108  * This is crucial (if not required) on systems that do not have a
1109  * cryptographic entropy source (in hardware or kernel) available.
1110  *
1111  * Requires: MBEDTLS_ENTROPY_C, MBEDTLS_PLATFORM_C
1112  *
1113  * \note The read/write functions that are used by the entropy source are
1114  *       determined in the platform layer, and can be modified at runtime and/or
1115  *       compile-time depending on the flags (MBEDTLS_PLATFORM_NV_SEED_*) used.
1116  *
1117  * \note If you use the default implementation functions that read a seedfile
1118  *       with regular fopen(), please make sure you make a seedfile with the
1119  *       proper name (defined in MBEDTLS_PLATFORM_STD_NV_SEED_FILE) and at
1120  *       least MBEDTLS_ENTROPY_BLOCK_SIZE bytes in size that can be read from
1121  *       and written to or you will get an entropy source error! The default
1122  *       implementation will only use the first MBEDTLS_ENTROPY_BLOCK_SIZE
1123  *       bytes from the file.
1124  *
1125  * \note The entropy collector will write to the seed file before entropy is
1126  *       given to an external source, to update it.
1127  */
1128 //#define MBEDTLS_ENTROPY_NV_SEED
1129 
1130 /**
1131  * \def MBEDTLS_MEMORY_DEBUG
1132  *
1133  * Enable debugging of buffer allocator memory issues. Automatically prints
1134  * (to stderr) all (fatal) messages on memory allocation issues. Enables
1135  * function for 'debug output' of allocated memory.
1136  *
1137  * Requires: MBEDTLS_MEMORY_BUFFER_ALLOC_C
1138  *
1139  * Uncomment this macro to let the buffer allocator print out error messages.
1140  */
1141 //#define MBEDTLS_MEMORY_DEBUG
1142 
1143 /**
1144  * \def MBEDTLS_MEMORY_BACKTRACE
1145  *
1146  * Include backtrace information with each allocated block.
1147  *
1148  * Requires: MBEDTLS_MEMORY_BUFFER_ALLOC_C
1149  *           GLIBC-compatible backtrace() an backtrace_symbols() support
1150  *
1151  * Uncomment this macro to include backtrace information
1152  */
1153 //#define MBEDTLS_MEMORY_BACKTRACE
1154 
1155 /**
1156  * \def MBEDTLS_PK_RSA_ALT_SUPPORT
1157  *
1158  * Support external private RSA keys (eg from a HSM) in the PK layer.
1159  *
1160  * Comment this macro to disable support for external private RSA keys.
1161  */
1162 //#define MBEDTLS_PK_RSA_ALT_SUPPORT
1163 
1164 /**
1165  * \def MBEDTLS_PKCS1_V15
1166  *
1167  * Enable support for PKCS#1 v1.5 encoding.
1168  *
1169  * Requires: MBEDTLS_RSA_C
1170  *
1171  * This enables support for PKCS#1 v1.5 operations.
1172  */
1173 #define MBEDTLS_PKCS1_V15
1174 
1175 /**
1176  * \def MBEDTLS_PKCS1_V21
1177  *
1178  * Enable support for PKCS#1 v2.1 encoding.
1179  *
1180  * Requires: MBEDTLS_MD_C, MBEDTLS_RSA_C
1181  *
1182  * This enables support for RSAES-OAEP and RSASSA-PSS operations.
1183  */
1184 #define MBEDTLS_PKCS1_V21
1185 
1186 /**
1187  * \def MBEDTLS_RSA_NO_CRT
1188  *
1189  * Do not use the Chinese Remainder Theorem
1190  * for the RSA private operation.
1191  *
1192  * Uncomment this macro to disable the use of CRT in RSA.
1193  *
1194  */
1195 //#define MBEDTLS_RSA_NO_CRT
1196 
1197 /**
1198  * \def MBEDTLS_SELF_TEST
1199  *
1200  * Enable the checkup functions (*_self_test).
1201  */
1202 //#define MBEDTLS_SELF_TEST
1203 
1204 /**
1205  * \def MBEDTLS_SHA256_SMALLER
1206  *
1207  * Enable an implementation of SHA-256 that has lower ROM footprint but also
1208  * lower performance.
1209  *
1210  * The default implementation is meant to be a reasonnable compromise between
1211  * performance and size. This version optimizes more aggressively for size at
1212  * the expense of performance. Eg on Cortex-M4 it reduces the size of
1213  * mbedtls_sha256_process() from ~2KB to ~0.5KB for a performance hit of about
1214  * 30%.
1215  *
1216  * Uncomment to enable the smaller implementation of SHA256.
1217  */
1218 //#define MBEDTLS_SHA256_SMALLER
1219 
1220 /**
1221  * \def MBEDTLS_SSL_ALL_ALERT_MESSAGES
1222  *
1223  * Enable sending of alert messages in case of encountered errors as per RFC.
1224  * If you choose not to send the alert messages, mbed TLS can still communicate
1225  * with other servers, only debugging of failures is harder.
1226  *
1227  * The advantage of not sending alert messages, is that no information is given
1228  * about reasons for failures thus preventing adversaries of gaining intel.
1229  *
1230  * Enable sending of all alert messages
1231  */
1232 //#define MBEDTLS_SSL_ALL_ALERT_MESSAGES
1233 
1234 /**
1235  * \def MBEDTLS_SSL_ASYNC_PRIVATE
1236  *
1237  * Enable asynchronous external private key operations in SSL. This allows
1238  * you to configure an SSL connection to call an external cryptographic
1239  * module to perform private key operations instead of performing the
1240  * operation inside the library.
1241  *
1242  */
1243 //#define MBEDTLS_SSL_ASYNC_PRIVATE
1244 
1245 /**
1246  * \def MBEDTLS_SSL_DEBUG_ALL
1247  *
1248  * Enable the debug messages in SSL module for all issues.
1249  * Debug messages have been disabled in some places to prevent timing
1250  * attacks due to (unbalanced) debugging function calls.
1251  *
1252  * If you need all error reporting you should enable this during debugging,
1253  * but remove this for production servers that should log as well.
1254  *
1255  * Uncomment this macro to report all debug messages on errors introducing
1256  * a timing side-channel.
1257  *
1258  */
1259 //#define MBEDTLS_SSL_DEBUG_ALL
1260 
1261 /** \def MBEDTLS_SSL_ENCRYPT_THEN_MAC
1262  *
1263  * Enable support for Encrypt-then-MAC, RFC 7366.
1264  *
1265  * This allows peers that both support it to use a more robust protection for
1266  * ciphersuites using CBC, providing deep resistance against timing attacks
1267  * on the padding or underlying cipher.
1268  *
1269  * This only affects CBC ciphersuites, and is useless if none is defined.
1270  *
1271  * Requires: MBEDTLS_SSL_PROTO_TLS1    or
1272  *           MBEDTLS_SSL_PROTO_TLS1_1  or
1273  *           MBEDTLS_SSL_PROTO_TLS1_2
1274  *
1275  * Comment this macro to disable support for Encrypt-then-MAC
1276  */
1277 //#define MBEDTLS_SSL_ENCRYPT_THEN_MAC
1278 
1279 /** \def MBEDTLS_SSL_EXTENDED_MASTER_SECRET
1280  *
1281  * Enable support for Extended Master Secret, aka Session Hash
1282  * (draft-ietf-tls-session-hash-02).
1283  *
1284  * This was introduced as "the proper fix" to the Triple Handshake familiy of
1285  * attacks, but it is recommended to always use it (even if you disable
1286  * renegotiation), since it actually fixes a more fundamental issue in the
1287  * original SSL/TLS design, and has implications beyond Triple Handshake.
1288  *
1289  * Requires: MBEDTLS_SSL_PROTO_TLS1    or
1290  *           MBEDTLS_SSL_PROTO_TLS1_1  or
1291  *           MBEDTLS_SSL_PROTO_TLS1_2
1292  *
1293  * Comment this macro to disable support for Extended Master Secret.
1294  */
1295 //#define MBEDTLS_SSL_EXTENDED_MASTER_SECRET
1296 
1297 /**
1298  * \def MBEDTLS_SSL_FALLBACK_SCSV
1299  *
1300  * Enable support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv-00).
1301  *
1302  * For servers, it is recommended to always enable this, unless you support
1303  * only one version of TLS, or know for sure that none of your clients
1304  * implements a fallback strategy.
1305  *
1306  * For clients, you only need this if you're using a fallback strategy, which
1307  * is not recommended in the first place, unless you absolutely need it to
1308  * interoperate with buggy (version-intolerant) servers.
1309  *
1310  * Comment this macro to disable support for FALLBACK_SCSV
1311  */
1312 //#define MBEDTLS_SSL_FALLBACK_SCSV
1313 
1314 /**
1315  * \def MBEDTLS_SSL_HW_RECORD_ACCEL
1316  *
1317  * Enable hooking functions in SSL module for hardware acceleration of
1318  * individual records.
1319  *
1320  * Uncomment this macro to enable hooking functions.
1321  */
1322 //#define MBEDTLS_SSL_HW_RECORD_ACCEL
1323 
1324 /**
1325  * \def MBEDTLS_SSL_CBC_RECORD_SPLITTING
1326  *
1327  * Enable 1/n-1 record splitting for CBC mode in SSLv3 and TLS 1.0.
1328  *
1329  * This is a countermeasure to the BEAST attack, which also minimizes the risk
1330  * of interoperability issues compared to sending 0-length records.
1331  *
1332  * Comment this macro to disable 1/n-1 record splitting.
1333  */
1334 //#define MBEDTLS_SSL_CBC_RECORD_SPLITTING
1335 
1336 /**
1337  * \def MBEDTLS_SSL_RENEGOTIATION
1338  *
1339  * Disable support for TLS renegotiation.
1340  *
1341  * The two main uses of renegotiation are (1) refresh keys on long-lived
1342  * connections and (2) client authentication after the initial handshake.
1343  * If you don't need renegotiation, it's probably better to disable it, since
1344  * it has been associated with security issues in the past and is easy to
1345  * misuse/misunderstand.
1346  *
1347  * Comment this to disable support for renegotiation.
1348  *
1349  * \note   Even if this option is disabled, both client and server are aware
1350  *         of the Renegotiation Indication Extension (RFC 5746) used to
1351  *         prevent the SSL renegotiation attack (see RFC 5746 Sect. 1).
1352  *         (See \c mbedtls_ssl_conf_legacy_renegotiation for the
1353  *          configuration of this extension).
1354  *
1355  */
1356 //#define MBEDTLS_SSL_RENEGOTIATION
1357 
1358 /**
1359  * \def MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO
1360  *
1361  * Enable support for receiving and parsing SSLv2 Client Hello messages for the
1362  * SSL Server module (MBEDTLS_SSL_SRV_C).
1363  *
1364  * Uncomment this macro to enable support for SSLv2 Client Hello messages.
1365  */
1366 //#define MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO
1367 
1368 /**
1369  * \def MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE
1370  *
1371  * Pick the ciphersuite according to the client's preferences rather than ours
1372  * in the SSL Server module (MBEDTLS_SSL_SRV_C).
1373  *
1374  * Uncomment this macro to respect client's ciphersuite order
1375  */
1376 //#define MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE
1377 
1378 /**
1379  * \def MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1380  *
1381  * Enable support for RFC 6066 max_fragment_length extension in SSL.
1382  *
1383  * Comment this macro to disable support for the max_fragment_length extension
1384  */
1385 //#define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1386 
1387 /**
1388  * \def MBEDTLS_SSL_PROTO_SSL3
1389  *
1390  * Enable support for SSL 3.0.
1391  *
1392  * Requires: MBEDTLS_MD5_C
1393  *           MBEDTLS_SHA1_C
1394  *
1395  * Comment this macro to disable support for SSL 3.0
1396  */
1397 //#define MBEDTLS_SSL_PROTO_SSL3
1398 
1399 /**
1400  * \def MBEDTLS_SSL_PROTO_TLS1
1401  *
1402  * Enable support for TLS 1.0.
1403  *
1404  * Requires: MBEDTLS_MD5_C
1405  *           MBEDTLS_SHA1_C
1406  *
1407  * Comment this macro to disable support for TLS 1.0
1408  */
1409 //#define MBEDTLS_SSL_PROTO_TLS1
1410 
1411 /**
1412  * \def MBEDTLS_SSL_PROTO_TLS1_1
1413  *
1414  * Enable support for TLS 1.1 (and DTLS 1.0 if DTLS is enabled).
1415  *
1416  * Requires: MBEDTLS_MD5_C
1417  *           MBEDTLS_SHA1_C
1418  *
1419  * Comment this macro to disable support for TLS 1.1 / DTLS 1.0
1420  */
1421 //#define MBEDTLS_SSL_PROTO_TLS1_1
1422 
1423 /**
1424  * \def MBEDTLS_SSL_PROTO_TLS1_2
1425  *
1426  * Enable support for TLS 1.2 (and DTLS 1.2 if DTLS is enabled).
1427  *
1428  * Requires: MBEDTLS_SHA1_C or MBEDTLS_SHA256_C or MBEDTLS_SHA512_C
1429  *           (Depends on ciphersuites)
1430  *
1431  * Comment this macro to disable support for TLS 1.2 / DTLS 1.2
1432  */
1433 //#define MBEDTLS_SSL_PROTO_TLS1_2
1434 
1435 /**
1436  * \def MBEDTLS_SSL_PROTO_DTLS
1437  *
1438  * Enable support for DTLS (all available versions).
1439  *
1440  * Enable this and MBEDTLS_SSL_PROTO_TLS1_1 to enable DTLS 1.0,
1441  * and/or this and MBEDTLS_SSL_PROTO_TLS1_2 to enable DTLS 1.2.
1442  *
1443  * Requires: MBEDTLS_SSL_PROTO_TLS1_1
1444  *        or MBEDTLS_SSL_PROTO_TLS1_2
1445  *
1446  * Comment this macro to disable support for DTLS
1447  */
1448 //#define MBEDTLS_SSL_PROTO_DTLS
1449 
1450 /**
1451  * \def MBEDTLS_SSL_ALPN
1452  *
1453  * Enable support for RFC 7301 Application Layer Protocol Negotiation.
1454  *
1455  * Comment this macro to disable support for ALPN.
1456  */
1457 //#define MBEDTLS_SSL_ALPN
1458 
1459 /**
1460  * \def MBEDTLS_SSL_DTLS_ANTI_REPLAY
1461  *
1462  * Enable support for the anti-replay mechanism in DTLS.
1463  *
1464  * Requires: MBEDTLS_SSL_TLS_C
1465  *           MBEDTLS_SSL_PROTO_DTLS
1466  *
1467  * \warning Disabling this is often a security risk!
1468  * See mbedtls_ssl_conf_dtls_anti_replay() for details.
1469  *
1470  * Comment this to disable anti-replay in DTLS.
1471  */
1472 //#define MBEDTLS_SSL_DTLS_ANTI_REPLAY
1473 
1474 /**
1475  * \def MBEDTLS_SSL_DTLS_HELLO_VERIFY
1476  *
1477  * Enable support for HelloVerifyRequest on DTLS servers.
1478  *
1479  * This feature is highly recommended to prevent DTLS servers being used as
1480  * amplifiers in DoS attacks against other hosts. It should always be enabled
1481  * unless you know for sure amplification cannot be a problem in the
1482  * environment in which your server operates.
1483  *
1484  * \warning Disabling this can ba a security risk! (see above)
1485  *
1486  * Requires: MBEDTLS_SSL_PROTO_DTLS
1487  *
1488  * Comment this to disable support for HelloVerifyRequest.
1489  */
1490 //#define MBEDTLS_SSL_DTLS_HELLO_VERIFY
1491 
1492 /**
1493  * \def MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
1494  *
1495  * Enable server-side support for clients that reconnect from the same port.
1496  *
1497  * Some clients unexpectedly close the connection and try to reconnect using the
1498  * same source port. This needs special support from the server to handle the
1499  * new connection securely, as described in section 4.2.8 of RFC 6347. This
1500  * flag enables that support.
1501  *
1502  * Requires: MBEDTLS_SSL_DTLS_HELLO_VERIFY
1503  *
1504  * Comment this to disable support for clients reusing the source port.
1505  */
1506 //#define MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
1507 
1508 /**
1509  * \def MBEDTLS_SSL_DTLS_BADMAC_LIMIT
1510  *
1511  * Enable support for a limit of records with bad MAC.
1512  *
1513  * See mbedtls_ssl_conf_dtls_badmac_limit().
1514  *
1515  * Requires: MBEDTLS_SSL_PROTO_DTLS
1516  */
1517 //#define MBEDTLS_SSL_DTLS_BADMAC_LIMIT
1518 
1519 /**
1520  * \def MBEDTLS_SSL_SESSION_TICKETS
1521  *
1522  * Enable support for RFC 5077 session tickets in SSL.
1523  * Client-side, provides full support for session tickets (maintainance of a
1524  * session store remains the responsibility of the application, though).
1525  * Server-side, you also need to provide callbacks for writing and parsing
1526  * tickets, including authenticated encryption and key management. Example
1527  * callbacks are provided by MBEDTLS_SSL_TICKET_C.
1528  *
1529  * Comment this macro to disable support for SSL session tickets
1530  */
1531 //#define MBEDTLS_SSL_SESSION_TICKETS
1532 
1533 /**
1534  * \def MBEDTLS_SSL_EXPORT_KEYS
1535  *
1536  * Enable support for exporting key block and master secret.
1537  * This is required for certain users of TLS, e.g. EAP-TLS.
1538  *
1539  * Comment this macro to disable support for key export
1540  */
1541 //#define MBEDTLS_SSL_EXPORT_KEYS
1542 
1543 /**
1544  * \def MBEDTLS_SSL_SERVER_NAME_INDICATION
1545  *
1546  * Enable support for RFC 6066 server name indication (SNI) in SSL.
1547  *
1548  * Requires: MBEDTLS_X509_CRT_PARSE_C
1549  *
1550  * Comment this macro to disable support for server name indication in SSL
1551  */
1552 //#define MBEDTLS_SSL_SERVER_NAME_INDICATION
1553 
1554 /**
1555  * \def MBEDTLS_SSL_TRUNCATED_HMAC
1556  *
1557  * Enable support for RFC 6066 truncated HMAC in SSL.
1558  *
1559  * Comment this macro to disable support for truncated HMAC in SSL
1560  */
1561 //#define MBEDTLS_SSL_TRUNCATED_HMAC
1562 
1563 /**
1564  * \def MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT
1565  *
1566  * Fallback to old (pre-2.7), non-conforming implementation of the truncated
1567  * HMAC extension which also truncates the HMAC key. Note that this option is
1568  * only meant for a transitory upgrade period and is likely to be removed in
1569  * a future version of the library.
1570  *
1571  * \warning The old implementation is non-compliant and has a security weakness
1572  *          (2^80 brute force attack on the HMAC key used for a single,
1573  *          uninterrupted connection). This should only be enabled temporarily
1574  *          when (1) the use of truncated HMAC is essential in order to save
1575  *          bandwidth, and (2) the peer is an Mbed TLS stack that doesn't use
1576  *          the fixed implementation yet (pre-2.7).
1577  *
1578  * \deprecated This option is deprecated and will likely be removed in a
1579  *             future version of Mbed TLS.
1580  *
1581  * Uncomment to fallback to old, non-compliant truncated HMAC implementation.
1582  *
1583  * Requires: MBEDTLS_SSL_TRUNCATED_HMAC
1584  */
1585 //#define MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT
1586 
1587 /**
1588  * \def MBEDTLS_THREADING_ALT
1589  *
1590  * Provide your own alternate threading implementation.
1591  *
1592  * Requires: MBEDTLS_THREADING_C
1593  *
1594  * Uncomment this to allow your own alternate threading implementation.
1595  */
1596 //#define MBEDTLS_THREADING_ALT
1597 
1598 /**
1599  * \def MBEDTLS_THREADING_PTHREAD
1600  *
1601  * Enable the pthread wrapper layer for the threading layer.
1602  *
1603  * Requires: MBEDTLS_THREADING_C
1604  *
1605  * Uncomment this to enable pthread mutexes.
1606  */
1607 #define MBEDTLS_THREADING_PTHREAD
1608 
1609 /**
1610  * \def MBEDTLS_VERSION_FEATURES
1611  *
1612  * Allow run-time checking of compile-time enabled features. Thus allowing users
1613  * to check at run-time if the library is for instance compiled with threading
1614  * support via mbedtls_version_check_feature().
1615  *
1616  * Requires: MBEDTLS_VERSION_C
1617  *
1618  * Comment this to disable run-time checking and save ROM space
1619  */
1620 #define MBEDTLS_VERSION_FEATURES
1621 
1622 /**
1623  * \def MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
1624  *
1625  * If set, the X509 parser will not break-off when parsing an X509 certificate
1626  * and encountering an extension in a v1 or v2 certificate.
1627  *
1628  * Uncomment to prevent an error.
1629  */
1630 //#define MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
1631 
1632 /**
1633  * \def MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
1634  *
1635  * If set, the X509 parser will not break-off when parsing an X509 certificate
1636  * and encountering an unknown critical extension.
1637  *
1638  * \warning Depending on your PKI use, enabling this can be a security risk!
1639  *
1640  * Uncomment to prevent an error.
1641  */
1642 //#define MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
1643 
1644 /**
1645  * \def MBEDTLS_X509_CHECK_KEY_USAGE
1646  *
1647  * Enable verification of the keyUsage extension (CA and leaf certificates).
1648  *
1649  * Disabling this avoids problems with mis-issued and/or misused
1650  * (intermediate) CA and leaf certificates.
1651  *
1652  * \warning Depending on your PKI use, disabling this can be a security risk!
1653  *
1654  * Comment to skip keyUsage checking for both CA and leaf certificates.
1655  */
1656 //#define MBEDTLS_X509_CHECK_KEY_USAGE
1657 
1658 /**
1659  * \def MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
1660  *
1661  * Enable verification of the extendedKeyUsage extension (leaf certificates).
1662  *
1663  * Disabling this avoids problems with mis-issued and/or misused certificates.
1664  *
1665  * \warning Depending on your PKI use, disabling this can be a security risk!
1666  *
1667  * Comment to skip extendedKeyUsage checking for certificates.
1668  */
1669 //#define MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
1670 
1671 /**
1672  * \def MBEDTLS_X509_RSASSA_PSS_SUPPORT
1673  *
1674  * Enable parsing and verification of X.509 certificates, CRLs and CSRS
1675  * signed with RSASSA-PSS (aka PKCS#1 v2.1).
1676  *
1677  * Comment this macro to disallow using RSASSA-PSS in certificates.
1678  */
1679 //#define MBEDTLS_X509_RSASSA_PSS_SUPPORT
1680 
1681 /**
1682  * \def MBEDTLS_ZLIB_SUPPORT
1683  *
1684  * If set, the SSL/TLS module uses ZLIB to support compression and
1685  * decompression of packet data.
1686  *
1687  * \warning TLS-level compression MAY REDUCE SECURITY! See for example the
1688  * CRIME attack. Before enabling this option, you should examine with care if
1689  * CRIME or similar exploits may be a applicable to your use case.
1690  *
1691  * \note Currently compression can't be used with DTLS.
1692  *
1693  * \deprecated This feature is deprecated and will be removed
1694  *             in the next major revision of the library.
1695  *
1696  * Used in: library/ssl_tls.c
1697  *          library/ssl_cli.c
1698  *          library/ssl_srv.c
1699  *
1700  * This feature requires zlib library and headers to be present.
1701  *
1702  * Uncomment to enable use of ZLIB
1703  */
1704 //#define MBEDTLS_ZLIB_SUPPORT
1705 /* \} name SECTION: mbed TLS feature support */
1706 
1707 /**
1708  * \name SECTION: mbed TLS modules
1709  *
1710  * This section enables or disables entire modules in mbed TLS
1711  * \{
1712  */
1713 
1714 /**
1715  * \def MBEDTLS_AESNI_C
1716  *
1717  * Enable AES-NI support on x86-64.
1718  *
1719  * Module:  library/aesni.c
1720  * Caller:  library/aes.c
1721  *
1722  * Requires: MBEDTLS_HAVE_ASM
1723  *
1724  * This modules adds support for the AES-NI instructions on x86-64
1725  */
1726 //#define MBEDTLS_AESNI_C
1727 
1728 /**
1729  * \def MBEDTLS_AES_C
1730  *
1731  * Enable the AES block cipher.
1732  *
1733  * Module:  library/aes.c
1734  * Caller:  library/cipher.c
1735  *          library/pem.c
1736  *          library/ctr_drbg.c
1737  *
1738  * This module enables the following ciphersuites (if other requisites are
1739  * enabled as well):
1740  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
1741  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
1742  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
1743  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
1744  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
1745  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
1746  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
1747  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
1748  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
1749  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
1750  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
1751  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
1752  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
1753  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
1754  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
1755  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
1756  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
1757  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
1758  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
1759  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
1760  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
1761  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
1762  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
1763  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
1764  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
1765  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
1766  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
1767  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
1768  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
1769  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
1770  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
1771  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384
1772  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
1773  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA
1774  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA
1775  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
1776  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256
1777  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
1778  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA
1779  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA
1780  *      MBEDTLS_TLS_RSA_WITH_AES_256_GCM_SHA384
1781  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA256
1782  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA
1783  *      MBEDTLS_TLS_RSA_WITH_AES_128_GCM_SHA256
1784  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA256
1785  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA
1786  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384
1787  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384
1788  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA
1789  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256
1790  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256
1791  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA
1792  *      MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384
1793  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384
1794  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA
1795  *      MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256
1796  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256
1797  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA
1798  *
1799  * PEM_PARSE uses AES for decrypting encrypted keys.
1800  */
1801 #define MBEDTLS_AES_C
1802 
1803 /**
1804  * \def MBEDTLS_ARC4_C
1805  *
1806  * Enable the ARCFOUR stream cipher.
1807  *
1808  * Module:  library/arc4.c
1809  * Caller:  library/cipher.c
1810  *
1811  * This module enables the following ciphersuites (if other requisites are
1812  * enabled as well):
1813  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_RC4_128_SHA
1814  *      MBEDTLS_TLS_ECDH_RSA_WITH_RC4_128_SHA
1815  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
1816  *      MBEDTLS_TLS_ECDHE_RSA_WITH_RC4_128_SHA
1817  *      MBEDTLS_TLS_ECDHE_PSK_WITH_RC4_128_SHA
1818  *      MBEDTLS_TLS_DHE_PSK_WITH_RC4_128_SHA
1819  *      MBEDTLS_TLS_RSA_WITH_RC4_128_SHA
1820  *      MBEDTLS_TLS_RSA_WITH_RC4_128_MD5
1821  *      MBEDTLS_TLS_RSA_PSK_WITH_RC4_128_SHA
1822  *      MBEDTLS_TLS_PSK_WITH_RC4_128_SHA
1823  *
1824  * \warning   ARC4 is considered a weak cipher and its use constitutes a
1825  *            security risk. If possible, we recommend avoidng dependencies on
1826  *            it, and considering stronger ciphers instead.
1827  *
1828  */
1829 //#define MBEDTLS_ARC4_C
1830 
1831 /**
1832  * \def MBEDTLS_ASN1_PARSE_C
1833  *
1834  * Enable the generic ASN1 parser.
1835  *
1836  * Module:  library/asn1.c
1837  * Caller:  library/x509.c
1838  *          library/dhm.c
1839  *          library/pkcs12.c
1840  *          library/pkcs5.c
1841  *          library/pkparse.c
1842  */
1843 #define MBEDTLS_ASN1_PARSE_C
1844 
1845 /**
1846  * \def MBEDTLS_ASN1_WRITE_C
1847  *
1848  * Enable the generic ASN1 writer.
1849  *
1850  * Module:  library/asn1write.c
1851  * Caller:  library/ecdsa.c
1852  *          library/pkwrite.c
1853  *          library/x509_create.c
1854  *          library/x509write_crt.c
1855  *          library/x509write_csr.c
1856  */
1857 #define MBEDTLS_ASN1_WRITE_C
1858 
1859 /**
1860  * \def MBEDTLS_BASE64_C
1861  *
1862  * Enable the Base64 module.
1863  *
1864  * Module:  library/base64.c
1865  * Caller:  library/pem.c
1866  *
1867  * This module is required for PEM support (required by X.509).
1868  */
1869 #define MBEDTLS_BASE64_C
1870 
1871 /**
1872  * \def MBEDTLS_BIGNUM_C
1873  *
1874  * Enable the multi-precision integer library.
1875  *
1876  * Module:  library/bignum.c
1877  * Caller:  library/dhm.c
1878  *          library/ecp.c
1879  *          library/ecdsa.c
1880  *          library/rsa.c
1881  *          library/rsa_internal.c
1882  *          library/ssl_tls.c
1883  *
1884  * This module is required for RSA, DHM and ECC (ECDH, ECDSA) support.
1885  */
1886 #define MBEDTLS_BIGNUM_C
1887 
1888 /**
1889  * \def MBEDTLS_BLOWFISH_C
1890  *
1891  * Enable the Blowfish block cipher.
1892  *
1893  * Module:  library/blowfish.c
1894  */
1895 //#define MBEDTLS_BLOWFISH_C
1896 
1897 /**
1898  * \def MBEDTLS_CAMELLIA_C
1899  *
1900  * Enable the Camellia block cipher.
1901  *
1902  * Module:  library/camellia.c
1903  * Caller:  library/cipher.c
1904  *
1905  * This module enables the following ciphersuites (if other requisites are
1906  * enabled as well):
1907  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
1908  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
1909  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256
1910  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384
1911  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
1912  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
1913  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256
1914  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384
1915  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
1916  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
1917  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
1918  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
1919  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
1920  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
1921  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
1922  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
1923  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
1924  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
1925  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
1926  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
1927  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
1928  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
1929  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384
1930  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
1931  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
1932  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256
1933  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
1934  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
1935  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384
1936  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
1937  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
1938  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256
1939  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
1940  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
1941  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384
1942  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384
1943  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256
1944  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256
1945  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384
1946  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384
1947  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256
1948  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256
1949  */
1950 //#define MBEDTLS_CAMELLIA_C
1951 
1952 /**
1953  * \def MBEDTLS_ARIA_C
1954  *
1955  * Enable the ARIA block cipher.
1956  *
1957  * Module:  library/aria.c
1958  * Caller:  library/cipher.c
1959  *
1960  * This module enables the following ciphersuites (if other requisites are
1961  * enabled as well):
1962  *
1963  *      MBEDTLS_TLS_RSA_WITH_ARIA_128_CBC_SHA256
1964  *      MBEDTLS_TLS_RSA_WITH_ARIA_256_CBC_SHA384
1965  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256
1966  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384
1967  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256
1968  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384
1969  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_CBC_SHA256
1970  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_CBC_SHA384
1971  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256
1972  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384
1973  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_CBC_SHA256
1974  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_CBC_SHA384
1975  *      MBEDTLS_TLS_RSA_WITH_ARIA_128_GCM_SHA256
1976  *      MBEDTLS_TLS_RSA_WITH_ARIA_256_GCM_SHA384
1977  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256
1978  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384
1979  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256
1980  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384
1981  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_GCM_SHA256
1982  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_GCM_SHA384
1983  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256
1984  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384
1985  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_GCM_SHA256
1986  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_GCM_SHA384
1987  *      MBEDTLS_TLS_PSK_WITH_ARIA_128_CBC_SHA256
1988  *      MBEDTLS_TLS_PSK_WITH_ARIA_256_CBC_SHA384
1989  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_CBC_SHA256
1990  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_CBC_SHA384
1991  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_CBC_SHA256
1992  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_CBC_SHA384
1993  *      MBEDTLS_TLS_PSK_WITH_ARIA_128_GCM_SHA256
1994  *      MBEDTLS_TLS_PSK_WITH_ARIA_256_GCM_SHA384
1995  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_GCM_SHA256
1996  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_GCM_SHA384
1997  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_GCM_SHA256
1998  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_GCM_SHA384
1999  *      MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256
2000  *      MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384
2001  */
2002 //#define MBEDTLS_ARIA_C
2003 
2004 /**
2005  * \def MBEDTLS_CCM_C
2006  *
2007  * Enable the Counter with CBC-MAC (CCM) mode for 128-bit block cipher.
2008  *
2009  * Module:  library/ccm.c
2010  *
2011  * Requires: MBEDTLS_AES_C or MBEDTLS_CAMELLIA_C
2012  *
2013  * This module enables the AES-CCM ciphersuites, if other requisites are
2014  * enabled as well.
2015  */
2016 #define MBEDTLS_CCM_C
2017 
2018 /**
2019  * \def MBEDTLS_CERTS_C
2020  *
2021  * Enable the test certificates.
2022  *
2023  * Module:  library/certs.c
2024  * Caller:
2025  *
2026  * This module is used for testing (ssl_client/server).
2027  */
2028 //#define MBEDTLS_CERTS_C
2029 
2030 /**
2031  * \def MBEDTLS_CHACHA20_C
2032  *
2033  * Enable the ChaCha20 stream cipher.
2034  *
2035  * Module:  library/chacha20.c
2036  */
2037 #define MBEDTLS_CHACHA20_C
2038 
2039 /**
2040  * \def MBEDTLS_CHACHAPOLY_C
2041  *
2042  * Enable the ChaCha20-Poly1305 AEAD algorithm.
2043  *
2044  * Module:  library/chachapoly.c
2045  *
2046  * This module requires: MBEDTLS_CHACHA20_C, MBEDTLS_POLY1305_C
2047  */
2048 #define MBEDTLS_CHACHAPOLY_C
2049 
2050 /**
2051  * \def MBEDTLS_CIPHER_C
2052  *
2053  * Enable the generic cipher layer.
2054  *
2055  * Module:  library/cipher.c
2056  * Caller:  library/ssl_tls.c
2057  *
2058  * Uncomment to enable generic cipher wrappers.
2059  */
2060 #define MBEDTLS_CIPHER_C
2061 
2062 /**
2063  * \def MBEDTLS_CMAC_C
2064  *
2065  * Enable the CMAC (Cipher-based Message Authentication Code) mode for block
2066  * ciphers.
2067  *
2068  * Module:  library/cmac.c
2069  *
2070  * Requires: MBEDTLS_AES_C or MBEDTLS_DES_C
2071  *
2072  */
2073 #define MBEDTLS_CMAC_C
2074 
2075 /**
2076  * \def MBEDTLS_CTR_DRBG_C
2077  *
2078  * Enable the CTR_DRBG AES-based random generator.
2079  * The CTR_DRBG generator uses AES-256 by default.
2080  * To use AES-128 instead, enable MBEDTLS_CTR_DRBG_USE_128_BIT_KEY below.
2081  *
2082  * Module:  library/ctr_drbg.c
2083  * Caller:
2084  *
2085  * Requires: MBEDTLS_AES_C
2086  *
2087  * This module provides the CTR_DRBG AES-256 random number generator.
2088  */
2089 #define MBEDTLS_CTR_DRBG_C
2090 
2091 /**
2092  * \def MBEDTLS_DEBUG_C
2093  *
2094  * Enable the debug functions.
2095  *
2096  * Module:  library/debug.c
2097  * Caller:  library/ssl_cli.c
2098  *          library/ssl_srv.c
2099  *          library/ssl_tls.c
2100  *
2101  * This module provides debugging functions.
2102  */
2103 //#define MBEDTLS_DEBUG_C
2104 
2105 /**
2106  * \def MBEDTLS_DES_C
2107  *
2108  * Enable the DES block cipher.
2109  *
2110  * Module:  library/des.c
2111  * Caller:  library/pem.c
2112  *          library/cipher.c
2113  *
2114  * This module enables the following ciphersuites (if other requisites are
2115  * enabled as well):
2116  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
2117  *      MBEDTLS_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
2118  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
2119  *      MBEDTLS_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
2120  *      MBEDTLS_TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
2121  *      MBEDTLS_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA
2122  *      MBEDTLS_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA
2123  *      MBEDTLS_TLS_RSA_WITH_3DES_EDE_CBC_SHA
2124  *      MBEDTLS_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA
2125  *      MBEDTLS_TLS_PSK_WITH_3DES_EDE_CBC_SHA
2126  *
2127  * PEM_PARSE uses DES/3DES for decrypting encrypted keys.
2128  *
2129  * \warning   DES is considered a weak cipher and its use constitutes a
2130  *            security risk. We recommend considering stronger ciphers instead.
2131  */
2132 //#define MBEDTLS_DES_C
2133 
2134 /**
2135  * \def MBEDTLS_DHM_C
2136  *
2137  * Enable the Diffie-Hellman-Merkle module.
2138  *
2139  * Module:  library/dhm.c
2140  * Caller:  library/ssl_cli.c
2141  *          library/ssl_srv.c
2142  *
2143  * This module is used by the following key exchanges:
2144  *      DHE-RSA, DHE-PSK
2145  *
2146  * \warning    Using DHE constitutes a security risk as it
2147  *             is not possible to validate custom DH parameters.
2148  *             If possible, it is recommended users should consider
2149  *             preferring other methods of key exchange.
2150  *             See dhm.h for more details.
2151  *
2152  */
2153 #define MBEDTLS_DHM_C
2154 
2155 /**
2156  * \def MBEDTLS_ECDH_C
2157  *
2158  * Enable the elliptic curve Diffie-Hellman library.
2159  *
2160  * Module:  library/ecdh.c
2161  * Caller:  library/ssl_cli.c
2162  *          library/ssl_srv.c
2163  *
2164  * This module is used by the following key exchanges:
2165  *      ECDHE-ECDSA, ECDHE-RSA, DHE-PSK
2166  *
2167  * Requires: MBEDTLS_ECP_C
2168  */
2169 #define MBEDTLS_ECDH_C
2170 
2171 /**
2172  * \def MBEDTLS_ECDSA_C
2173  *
2174  * Enable the elliptic curve DSA library.
2175  *
2176  * Module:  library/ecdsa.c
2177  * Caller:
2178  *
2179  * This module is used by the following key exchanges:
2180  *      ECDHE-ECDSA
2181  *
2182  * Requires: MBEDTLS_ECP_C, MBEDTLS_ASN1_WRITE_C, MBEDTLS_ASN1_PARSE_C
2183  */
2184 #define MBEDTLS_ECDSA_C
2185 
2186 /**
2187  * \def MBEDTLS_ECJPAKE_C
2188  *
2189  * Enable the elliptic curve J-PAKE library.
2190  *
2191  * \warning This is currently experimental. EC J-PAKE support is based on the
2192  * Thread v1.0.0 specification; incompatible changes to the specification
2193  * might still happen. For this reason, this is disabled by default.
2194  *
2195  * Module:  library/ecjpake.c
2196  * Caller:
2197  *
2198  * This module is used by the following key exchanges:
2199  *      ECJPAKE
2200  *
2201  * Requires: MBEDTLS_ECP_C, MBEDTLS_MD_C
2202  */
2203 //#define MBEDTLS_ECJPAKE_C
2204 
2205 /**
2206  * \def MBEDTLS_ECP_C
2207  *
2208  * Enable the elliptic curve over GF(p) library.
2209  *
2210  * Module:  library/ecp.c
2211  * Caller:  library/ecdh.c
2212  *          library/ecdsa.c
2213  *          library/ecjpake.c
2214  *
2215  * Requires: MBEDTLS_BIGNUM_C and at least one MBEDTLS_ECP_DP_XXX_ENABLED
2216  */
2217 #define MBEDTLS_ECP_C
2218 
2219 /**
2220  * \def MBEDTLS_ENTROPY_C
2221  *
2222  * Enable the platform-specific entropy code.
2223  *
2224  * Module:  library/entropy.c
2225  * Caller:
2226  *
2227  * Requires: MBEDTLS_SHA512_C or MBEDTLS_SHA256_C
2228  *
2229  * This module provides a generic entropy pool
2230  */
2231 #define MBEDTLS_ENTROPY_C
2232 
2233 /**
2234  * \def MBEDTLS_ERROR_C
2235  *
2236  * Enable error code to error string conversion.
2237  *
2238  * Module:  library/error.c
2239  * Caller:
2240  *
2241  * This module enables mbedtls_strerror().
2242  */
2243 //#define MBEDTLS_ERROR_C
2244 
2245 /**
2246  * \def MBEDTLS_GCM_C
2247  *
2248  * Enable the Galois/Counter Mode (GCM) for AES.
2249  *
2250  * Module:  library/gcm.c
2251  *
2252  * Requires: MBEDTLS_AES_C or MBEDTLS_CAMELLIA_C
2253  *
2254  * This module enables the AES-GCM and CAMELLIA-GCM ciphersuites, if other
2255  * requisites are enabled as well.
2256  */
2257 #define MBEDTLS_GCM_C
2258 
2259 /**
2260  * \def MBEDTLS_HAVEGE_C
2261  *
2262  * Enable the HAVEGE random generator.
2263  *
2264  * Warning: the HAVEGE random generator is not suitable for virtualized
2265  *          environments
2266  *
2267  * Warning: the HAVEGE random generator is dependent on timing and specific
2268  *          processor traits. It is therefore not advised to use HAVEGE as
2269  *          your applications primary random generator or primary entropy pool
2270  *          input. As a secondary input to your entropy pool, it IS able add
2271  *          the (limited) extra entropy it provides.
2272  *
2273  * Module:  library/havege.c
2274  * Caller:
2275  *
2276  * Requires: MBEDTLS_TIMING_C
2277  *
2278  * Uncomment to enable the HAVEGE random generator.
2279  */
2280 //#define MBEDTLS_HAVEGE_C
2281 
2282 /**
2283  * \def MBEDTLS_HKDF_C
2284  *
2285  * Enable the HKDF algorithm (RFC 5869).
2286  *
2287  * Module:  library/hkdf.c
2288  * Caller:
2289  *
2290  * Requires: MBEDTLS_MD_C
2291  *
2292  * This module adds support for the Hashed Message Authentication Code
2293  * (HMAC)-based key derivation function (HKDF).
2294  */
2295 #define MBEDTLS_HKDF_C
2296 
2297 /**
2298  * \def MBEDTLS_HMAC_DRBG_C
2299  *
2300  * Enable the HMAC_DRBG random generator.
2301  *
2302  * Module:  library/hmac_drbg.c
2303  * Caller:
2304  *
2305  * Requires: MBEDTLS_MD_C
2306  *
2307  * Uncomment to enable the HMAC_DRBG random number geerator.
2308  */
2309 #define MBEDTLS_HMAC_DRBG_C
2310 
2311 /**
2312  * \def MBEDTLS_NIST_KW_C
2313  *
2314  * Enable the Key Wrapping mode for 128-bit block ciphers,
2315  * as defined in NIST SP 800-38F. Only KW and KWP modes
2316  * are supported. At the moment, only AES is approved by NIST.
2317  *
2318  * Module:  library/nist_kw.c
2319  *
2320  * Requires: MBEDTLS_AES_C and MBEDTLS_CIPHER_C
2321  */
2322 #define MBEDTLS_NIST_KW_C
2323 
2324 /**
2325  * \def MBEDTLS_MD_C
2326  *
2327  * Enable the generic message digest layer.
2328  *
2329  * Module:  library/md.c
2330  * Caller:
2331  *
2332  * Uncomment to enable generic message digest wrappers.
2333  */
2334 #define MBEDTLS_MD_C
2335 
2336 /**
2337  * \def MBEDTLS_MD2_C
2338  *
2339  * Enable the MD2 hash algorithm.
2340  *
2341  * Module:  library/md2.c
2342  * Caller:
2343  *
2344  * Uncomment to enable support for (rare) MD2-signed X.509 certs.
2345  *
2346  * \warning   MD2 is considered a weak message digest and its use constitutes a
2347  *            security risk. If possible, we recommend avoiding dependencies on
2348  *            it, and considering stronger message digests instead.
2349  *
2350  */
2351 //#define MBEDTLS_MD2_C
2352 
2353 /**
2354  * \def MBEDTLS_MD4_C
2355  *
2356  * Enable the MD4 hash algorithm.
2357  *
2358  * Module:  library/md4.c
2359  * Caller:
2360  *
2361  * Uncomment to enable support for (rare) MD4-signed X.509 certs.
2362  *
2363  * \warning   MD4 is considered a weak message digest and its use constitutes a
2364  *            security risk. If possible, we recommend avoiding dependencies on
2365  *            it, and considering stronger message digests instead.
2366  *
2367  */
2368 //#define MBEDTLS_MD4_C
2369 
2370 /**
2371  * \def MBEDTLS_MD5_C
2372  *
2373  * Enable the MD5 hash algorithm.
2374  *
2375  * Module:  library/md5.c
2376  * Caller:  library/md.c
2377  *          library/pem.c
2378  *          library/ssl_tls.c
2379  *
2380  * This module is required for SSL/TLS up to version 1.1, and for TLS 1.2
2381  * depending on the handshake parameters. Further, it is used for checking
2382  * MD5-signed certificates, and for PBKDF1 when decrypting PEM-encoded
2383  * encrypted keys.
2384  *
2385  * \warning   MD5 is considered a weak message digest and its use constitutes a
2386  *            security risk. If possible, we recommend avoiding dependencies on
2387  *            it, and considering stronger message digests instead.
2388  *
2389  */
2390 //#define MBEDTLS_MD5_C
2391 
2392 /**
2393  * \def MBEDTLS_MEMORY_BUFFER_ALLOC_C
2394  *
2395  * Enable the buffer allocator implementation that makes use of a (stack)
2396  * based buffer to 'allocate' dynamic memory. (replaces calloc() and free()
2397  * calls)
2398  *
2399  * Module:  library/memory_buffer_alloc.c
2400  *
2401  * Requires: MBEDTLS_PLATFORM_C
2402  *           MBEDTLS_PLATFORM_MEMORY (to use it within mbed TLS)
2403  *
2404  * Enable this module to enable the buffer memory allocator.
2405  */
2406 #define MBEDTLS_MEMORY_BUFFER_ALLOC_C
2407 
2408 /**
2409  * \def MBEDTLS_NET_C
2410  *
2411  * Enable the TCP and UDP over IPv6/IPv4 networking routines.
2412  *
2413  * \note This module only works on POSIX/Unix (including Linux, BSD and OS X)
2414  * and Windows. For other platforms, you'll want to disable it, and write your
2415  * own networking callbacks to be passed to \c mbedtls_ssl_set_bio().
2416  *
2417  * \note See also our Knowledge Base article about porting to a new
2418  * environment:
2419  * https://tls.mbed.org/kb/how-to/how-do-i-port-mbed-tls-to-a-new-environment-OS
2420  *
2421  * Module:  library/net_sockets.c
2422  *
2423  * This module provides networking routines.
2424  */
2425 //#define MBEDTLS_NET_C
2426 
2427 /**
2428  * \def MBEDTLS_OID_C
2429  *
2430  * Enable the OID database.
2431  *
2432  * Module:  library/oid.c
2433  * Caller:  library/asn1write.c
2434  *          library/pkcs5.c
2435  *          library/pkparse.c
2436  *          library/pkwrite.c
2437  *          library/rsa.c
2438  *          library/x509.c
2439  *          library/x509_create.c
2440  *          library/x509_crl.c
2441  *          library/x509_crt.c
2442  *          library/x509_csr.c
2443  *          library/x509write_crt.c
2444  *          library/x509write_csr.c
2445  *
2446  * This modules translates between OIDs and internal values.
2447  */
2448 #define MBEDTLS_OID_C
2449 
2450 /**
2451  * \def MBEDTLS_PADLOCK_C
2452  *
2453  * Enable VIA Padlock support on x86.
2454  *
2455  * Module:  library/padlock.c
2456  * Caller:  library/aes.c
2457  *
2458  * Requires: MBEDTLS_HAVE_ASM
2459  *
2460  * This modules adds support for the VIA PadLock on x86.
2461  */
2462 //#define MBEDTLS_PADLOCK_C
2463 
2464 /**
2465  * \def MBEDTLS_PEM_PARSE_C
2466  *
2467  * Enable PEM decoding / parsing.
2468  *
2469  * Module:  library/pem.c
2470  * Caller:  library/dhm.c
2471  *          library/pkparse.c
2472  *          library/x509_crl.c
2473  *          library/x509_crt.c
2474  *          library/x509_csr.c
2475  *
2476  * Requires: MBEDTLS_BASE64_C
2477  *
2478  * This modules adds support for decoding / parsing PEM files.
2479  */
2480 #define MBEDTLS_PEM_PARSE_C
2481 
2482 /**
2483  * \def MBEDTLS_PEM_WRITE_C
2484  *
2485  * Enable PEM encoding / writing.
2486  *
2487  * Module:  library/pem.c
2488  * Caller:  library/pkwrite.c
2489  *          library/x509write_crt.c
2490  *          library/x509write_csr.c
2491  *
2492  * Requires: MBEDTLS_BASE64_C
2493  *
2494  * This modules adds support for encoding / writing PEM files.
2495  */
2496 #define MBEDTLS_PEM_WRITE_C
2497 
2498 /**
2499  * \def MBEDTLS_PK_C
2500  *
2501  * Enable the generic public (asymetric) key layer.
2502  *
2503  * Module:  library/pk.c
2504  * Caller:  library/ssl_tls.c
2505  *          library/ssl_cli.c
2506  *          library/ssl_srv.c
2507  *
2508  * Requires: MBEDTLS_RSA_C or MBEDTLS_ECP_C
2509  *
2510  * Uncomment to enable generic public key wrappers.
2511  */
2512 #define MBEDTLS_PK_C
2513 
2514 /**
2515  * \def MBEDTLS_PK_PARSE_C
2516  *
2517  * Enable the generic public (asymetric) key parser.
2518  *
2519  * Module:  library/pkparse.c
2520  * Caller:  library/x509_crt.c
2521  *          library/x509_csr.c
2522  *
2523  * Requires: MBEDTLS_PK_C
2524  *
2525  * Uncomment to enable generic public key parse functions.
2526  */
2527 #define MBEDTLS_PK_PARSE_C
2528 
2529 /**
2530  * \def MBEDTLS_PK_WRITE_C
2531  *
2532  * Enable the generic public (asymetric) key writer.
2533  *
2534  * Module:  library/pkwrite.c
2535  * Caller:  library/x509write.c
2536  *
2537  * Requires: MBEDTLS_PK_C
2538  *
2539  * Uncomment to enable generic public key write functions.
2540  */
2541 #define MBEDTLS_PK_WRITE_C
2542 
2543 /**
2544  * \def MBEDTLS_PKCS5_C
2545  *
2546  * Enable PKCS#5 functions.
2547  *
2548  * Module:  library/pkcs5.c
2549  *
2550  * Requires: MBEDTLS_MD_C
2551  *
2552  * This module adds support for the PKCS#5 functions.
2553  */
2554 #define MBEDTLS_PKCS5_C
2555 
2556 /**
2557  * \def MBEDTLS_PKCS11_C
2558  *
2559  * Enable wrapper for PKCS#11 smartcard support.
2560  *
2561  * Module:  library/pkcs11.c
2562  * Caller:  library/pk.c
2563  *
2564  * Requires: MBEDTLS_PK_C
2565  *
2566  * This module enables SSL/TLS PKCS #11 smartcard support.
2567  * Requires the presence of the PKCS#11 helper library (libpkcs11-helper)
2568  */
2569 //#define MBEDTLS_PKCS11_C
2570 
2571 /**
2572  * \def MBEDTLS_PKCS12_C
2573  *
2574  * Enable PKCS#12 PBE functions.
2575  * Adds algorithms for parsing PKCS#8 encrypted private keys
2576  *
2577  * Module:  library/pkcs12.c
2578  * Caller:  library/pkparse.c
2579  *
2580  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_CIPHER_C, MBEDTLS_MD_C
2581  * Can use:  MBEDTLS_ARC4_C
2582  *
2583  * This module enables PKCS#12 functions.
2584  */
2585 //#define MBEDTLS_PKCS12_C
2586 
2587 /**
2588  * \def MBEDTLS_PLATFORM_C
2589  *
2590  * Enable the platform abstraction layer that allows you to re-assign
2591  * functions like calloc(), free(), snprintf(), printf(), fprintf(), exit().
2592  *
2593  * Enabling MBEDTLS_PLATFORM_C enables to use of MBEDTLS_PLATFORM_XXX_ALT
2594  * or MBEDTLS_PLATFORM_XXX_MACRO directives, allowing the functions mentioned
2595  * above to be specified at runtime or compile time respectively.
2596  *
2597  * \note This abstraction layer must be enabled on Windows (including MSYS2)
2598  * as other module rely on it for a fixed snprintf implementation.
2599  *
2600  * Module:  library/platform.c
2601  * Caller:  Most other .c files
2602  *
2603  * This module enables abstraction of common (libc) functions.
2604  */
2605 #define MBEDTLS_PLATFORM_C
2606 
2607 /**
2608  * \def MBEDTLS_POLY1305_C
2609  *
2610  * Enable the Poly1305 MAC algorithm.
2611  *
2612  * Module:  library/poly1305.c
2613  * Caller:  library/chachapoly.c
2614  */
2615 #define MBEDTLS_POLY1305_C
2616 
2617 /**
2618  * \def MBEDTLS_RIPEMD160_C
2619  *
2620  * Enable the RIPEMD-160 hash algorithm.
2621  *
2622  * Module:  library/ripemd160.c
2623  * Caller:  library/md.c
2624  *
2625  */
2626 //#define MBEDTLS_RIPEMD160_C
2627 
2628 /**
2629  * \def MBEDTLS_RSA_C
2630  *
2631  * Enable the RSA public-key cryptosystem.
2632  *
2633  * Module:  library/rsa.c
2634  *          library/rsa_internal.c
2635  * Caller:  library/ssl_cli.c
2636  *          library/ssl_srv.c
2637  *          library/ssl_tls.c
2638  *          library/x509.c
2639  *
2640  * This module is used by the following key exchanges:
2641  *      RSA, DHE-RSA, ECDHE-RSA, RSA-PSK
2642  *
2643  * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C
2644  */
2645 #define MBEDTLS_RSA_C
2646 
2647 /**
2648  * \def MBEDTLS_SHA1_C
2649  *
2650  * Enable the SHA1 cryptographic hash algorithm.
2651  *
2652  * Module:  library/sha1.c
2653  * Caller:  library/md.c
2654  *          library/ssl_cli.c
2655  *          library/ssl_srv.c
2656  *          library/ssl_tls.c
2657  *          library/x509write_crt.c
2658  *
2659  * This module is required for SSL/TLS up to version 1.1, for TLS 1.2
2660  * depending on the handshake parameters, and for SHA1-signed certificates.
2661  *
2662  * \warning   SHA-1 is considered a weak message digest and its use constitutes
2663  *            a security risk. If possible, we recommend avoiding dependencies
2664  *            on it, and considering stronger message digests instead.
2665  *
2666  */
2667 #define MBEDTLS_SHA1_C
2668 
2669 /**
2670  * \def MBEDTLS_SHA256_C
2671  *
2672  * Enable the SHA-224 and SHA-256 cryptographic hash algorithms.
2673  *
2674  * Module:  library/sha256.c
2675  * Caller:  library/entropy.c
2676  *          library/md.c
2677  *          library/ssl_cli.c
2678  *          library/ssl_srv.c
2679  *          library/ssl_tls.c
2680  *
2681  * This module adds support for SHA-224 and SHA-256.
2682  * This module is required for the SSL/TLS 1.2 PRF function.
2683  */
2684 #define MBEDTLS_SHA256_C
2685 
2686 /**
2687  * \def MBEDTLS_SHA512_C
2688  *
2689  * Enable the SHA-384 and SHA-512 cryptographic hash algorithms.
2690  *
2691  * Module:  library/sha512.c
2692  * Caller:  library/entropy.c
2693  *          library/md.c
2694  *          library/ssl_cli.c
2695  *          library/ssl_srv.c
2696  *
2697  * This module adds support for SHA-384 and SHA-512.
2698  */
2699 #define MBEDTLS_SHA512_C
2700 
2701 /**
2702  * \def MBEDTLS_SSL_CACHE_C
2703  *
2704  * Enable simple SSL cache implementation.
2705  *
2706  * Module:  library/ssl_cache.c
2707  * Caller:
2708  *
2709  * Requires: MBEDTLS_SSL_CACHE_C
2710  */
2711 //#define MBEDTLS_SSL_CACHE_C
2712 
2713 /**
2714  * \def MBEDTLS_SSL_COOKIE_C
2715  *
2716  * Enable basic implementation of DTLS cookies for hello verification.
2717  *
2718  * Module:  library/ssl_cookie.c
2719  * Caller:
2720  */
2721 //#define MBEDTLS_SSL_COOKIE_C
2722 
2723 /**
2724  * \def MBEDTLS_SSL_TICKET_C
2725  *
2726  * Enable an implementation of TLS server-side callbacks for session tickets.
2727  *
2728  * Module:  library/ssl_ticket.c
2729  * Caller:
2730  *
2731  * Requires: MBEDTLS_CIPHER_C
2732  */
2733 //#define MBEDTLS_SSL_TICKET_C
2734 
2735 /**
2736  * \def MBEDTLS_SSL_CLI_C
2737  *
2738  * Enable the SSL/TLS client code.
2739  *
2740  * Module:  library/ssl_cli.c
2741  * Caller:
2742  *
2743  * Requires: MBEDTLS_SSL_TLS_C
2744  *
2745  * This module is required for SSL/TLS client support.
2746  */
2747 //#define MBEDTLS_SSL_CLI_C
2748 
2749 /**
2750  * \def MBEDTLS_SSL_SRV_C
2751  *
2752  * Enable the SSL/TLS server code.
2753  *
2754  * Module:  library/ssl_srv.c
2755  * Caller:
2756  *
2757  * Requires: MBEDTLS_SSL_TLS_C
2758  *
2759  * This module is required for SSL/TLS server support.
2760  */
2761 //#define MBEDTLS_SSL_SRV_C
2762 
2763 /**
2764  * \def MBEDTLS_SSL_TLS_C
2765  *
2766  * Enable the generic SSL/TLS code.
2767  *
2768  * Module:  library/ssl_tls.c
2769  * Caller:  library/ssl_cli.c
2770  *          library/ssl_srv.c
2771  *
2772  * Requires: MBEDTLS_CIPHER_C, MBEDTLS_MD_C
2773  *           and at least one of the MBEDTLS_SSL_PROTO_XXX defines
2774  *
2775  * This module is required for SSL/TLS.
2776  */
2777 //#define MBEDTLS_SSL_TLS_C
2778 
2779 /**
2780  * \def MBEDTLS_THREADING_C
2781  *
2782  * Enable the threading abstraction layer.
2783  * By default mbed TLS assumes it is used in a non-threaded environment or that
2784  * contexts are not shared between threads. If you do intend to use contexts
2785  * between threads, you will need to enable this layer to prevent race
2786  * conditions. See also our Knowledge Base article about threading:
2787  * https://tls.mbed.org/kb/development/thread-safety-and-multi-threading
2788  *
2789  * Module:  library/threading.c
2790  *
2791  * This allows different threading implementations (self-implemented or
2792  * provided).
2793  *
2794  * You will have to enable either MBEDTLS_THREADING_ALT or
2795  * MBEDTLS_THREADING_PTHREAD.
2796  *
2797  * Enable this layer to allow use of mutexes within mbed TLS
2798  */
2799 #define MBEDTLS_THREADING_C
2800 
2801 /**
2802  * \def MBEDTLS_TIMING_C
2803  *
2804  * Enable the semi-portable timing interface.
2805  *
2806  * \note The provided implementation only works on POSIX/Unix (including Linux,
2807  * BSD and OS X) and Windows. On other platforms, you can either disable that
2808  * module and provide your own implementations of the callbacks needed by
2809  * \c mbedtls_ssl_set_timer_cb() for DTLS, or leave it enabled and provide
2810  * your own implementation of the whole module by setting
2811  * \c MBEDTLS_TIMING_ALT in the current file.
2812  *
2813  * \note See also our Knowledge Base article about porting to a new
2814  * environment:
2815  * https://tls.mbed.org/kb/how-to/how-do-i-port-mbed-tls-to-a-new-environment-OS
2816  *
2817  * Module:  library/timing.c
2818  * Caller:  library/havege.c
2819  *
2820  * This module is used by the HAVEGE random number generator.
2821  */
2822 #define MBEDTLS_TIMING_C
2823 
2824 /**
2825  * \def MBEDTLS_VERSION_C
2826  *
2827  * Enable run-time version information.
2828  *
2829  * Module:  library/version.c
2830  *
2831  * This module provides run-time version information.
2832  */
2833 #define MBEDTLS_VERSION_C
2834 
2835 /**
2836  * \def MBEDTLS_X509_USE_C
2837  *
2838  * Enable X.509 core for using certificates.
2839  *
2840  * Module:  library/x509.c
2841  * Caller:  library/x509_crl.c
2842  *          library/x509_crt.c
2843  *          library/x509_csr.c
2844  *
2845  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_BIGNUM_C, MBEDTLS_OID_C,
2846  *           MBEDTLS_PK_PARSE_C
2847  *
2848  * This module is required for the X.509 parsing modules.
2849  */
2850 //#define MBEDTLS_X509_USE_C
2851 
2852 /**
2853  * \def MBEDTLS_X509_CRT_PARSE_C
2854  *
2855  * Enable X.509 certificate parsing.
2856  *
2857  * Module:  library/x509_crt.c
2858  * Caller:  library/ssl_cli.c
2859  *          library/ssl_srv.c
2860  *          library/ssl_tls.c
2861  *
2862  * Requires: MBEDTLS_X509_USE_C
2863  *
2864  * This module is required for X.509 certificate parsing.
2865  */
2866 //#define MBEDTLS_X509_CRT_PARSE_C
2867 
2868 /**
2869  * \def MBEDTLS_X509_CRL_PARSE_C
2870  *
2871  * Enable X.509 CRL parsing.
2872  *
2873  * Module:  library/x509_crl.c
2874  * Caller:  library/x509_crt.c
2875  *
2876  * Requires: MBEDTLS_X509_USE_C
2877  *
2878  * This module is required for X.509 CRL parsing.
2879  */
2880 //#define MBEDTLS_X509_CRL_PARSE_C
2881 
2882 /**
2883  * \def MBEDTLS_X509_CSR_PARSE_C
2884  *
2885  * Enable X.509 Certificate Signing Request (CSR) parsing.
2886  *
2887  * Module:  library/x509_csr.c
2888  * Caller:  library/x509_crt_write.c
2889  *
2890  * Requires: MBEDTLS_X509_USE_C
2891  *
2892  * This module is used for reading X.509 certificate request.
2893  */
2894 //#define MBEDTLS_X509_CSR_PARSE_C
2895 
2896 /**
2897  * \def MBEDTLS_X509_CREATE_C
2898  *
2899  * Enable X.509 core for creating certificates.
2900  *
2901  * Module:  library/x509_create.c
2902  *
2903  * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C, MBEDTLS_PK_WRITE_C
2904  *
2905  * This module is the basis for creating X.509 certificates and CSRs.
2906  */
2907 //#define MBEDTLS_X509_CREATE_C
2908 
2909 /**
2910  * \def MBEDTLS_X509_CRT_WRITE_C
2911  *
2912  * Enable creating X.509 certificates.
2913  *
2914  * Module:  library/x509_crt_write.c
2915  *
2916  * Requires: MBEDTLS_X509_CREATE_C
2917  *
2918  * This module is required for X.509 certificate creation.
2919  */
2920 //#define MBEDTLS_X509_CRT_WRITE_C
2921 
2922 /**
2923  * \def MBEDTLS_X509_CSR_WRITE_C
2924  *
2925  * Enable creating X.509 Certificate Signing Requests (CSR).
2926  *
2927  * Module:  library/x509_csr_write.c
2928  *
2929  * Requires: MBEDTLS_X509_CREATE_C
2930  *
2931  * This module is required for X.509 certificate request writing.
2932  */
2933 //#define MBEDTLS_X509_CSR_WRITE_C
2934 
2935 /**
2936  * \def MBEDTLS_XTEA_C
2937  *
2938  * Enable the XTEA block cipher.
2939  *
2940  * Module:  library/xtea.c
2941  * Caller:
2942  */
2943 //#define MBEDTLS_XTEA_C
2944 
2945 /* \} name SECTION: mbed TLS modules */
2946 
2947 /**
2948  * \name SECTION: Module configuration options
2949  *
2950  * This section allows for the setting of module specific sizes and
2951  * configuration options. The default values are already present in the
2952  * relevant header files and should suffice for the regular use cases.
2953  *
2954  * Our advice is to enable options and change their values here
2955  * only if you have a good reason and know the consequences.
2956  *
2957  * Please check the respective header file for documentation on these
2958  * parameters (to prevent duplicate documentation).
2959  * \{
2960  */
2961 
2962 /* MPI / BIGNUM options */
2963 //#define MBEDTLS_MPI_WINDOW_SIZE            6 /**< Maximum windows size used. */
2964 //#define MBEDTLS_MPI_MAX_SIZE            1024 /**< Maximum number of bytes for usable MPIs. */
2965 
2966 /* CTR_DRBG options */
2967 //#define MBEDTLS_CTR_DRBG_ENTROPY_LEN               48 /**< Amount of entropy used per seed by default (48 with SHA-512, 32 with SHA-256) */
2968 /*!  Maximal reseed counter - indicates maximal number of
2969 requests allowed between reseeds; according to NIST 800-90
2970 it is (2^48 - 1), our restriction is :  (int - 0xFFFF - 0xF).*/
2971 #define MBEDTLS_CTR_DRBG_RESEED_INTERVAL            0xFFF0 /**< Interval before reseed is performed by default */
2972 //#define MBEDTLS_CTR_DRBG_MAX_INPUT                256 /**< Maximum number of additional input bytes */
2973 //#define MBEDTLS_CTR_DRBG_MAX_REQUEST             1024 /**< Maximum number of requested bytes per call */
2974 //#define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT           384 /**< Maximum size of (re)seed buffer */
2975 //#define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY              /**< Use 128-bit key for CTR_DRBG - may reduce security (see ctr_drbg.h) */
2976 
2977 /* HMAC_DRBG options */
2978 //#define MBEDTLS_HMAC_DRBG_RESEED_INTERVAL   10000 /**< Interval before reseed is performed by default */
2979 //#define MBEDTLS_HMAC_DRBG_MAX_INPUT           256 /**< Maximum number of additional input bytes */
2980 //#define MBEDTLS_HMAC_DRBG_MAX_REQUEST        1024 /**< Maximum number of requested bytes per call */
2981 //#define MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT      384 /**< Maximum size of (re)seed buffer */
2982 
2983 /* ECP options */
2984 //#define MBEDTLS_ECP_MAX_BITS             521 /**< Maximum bit size of groups */
2985 //#define MBEDTLS_ECP_WINDOW_SIZE            6 /**< Maximum window size used */
2986 //#define MBEDTLS_ECP_FIXED_POINT_OPTIM      1 /**< Enable fixed-point speed-up */
2987 
2988 /* Entropy options */
2989 //#define MBEDTLS_ENTROPY_MAX_SOURCES                20 /**< Maximum number of sources supported */
2990 #define MBEDTLS_ENTROPY_MAX_GATHER                144 /**< Maximum amount requested from entropy sources */
2991 //#define MBEDTLS_ENTROPY_MIN_HARDWARE               32 /**< Default minimum number of bytes required for the hardware entropy source mbedtls_hardware_poll() before entropy is released */
2992 
2993 /* Memory buffer allocator options */
2994 //#define MBEDTLS_MEMORY_ALIGN_MULTIPLE      4 /**< Align on multiples of this value */
2995 
2996 /* Platform options */
2997 //#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. */
2998 //#define MBEDTLS_PLATFORM_STD_CALLOC        calloc /**< Default allocator to use, can be undefined */
2999 //#define MBEDTLS_PLATFORM_STD_FREE            free /**< Default free to use, can be undefined */
3000 //#define MBEDTLS_PLATFORM_STD_EXIT            exit /**< Default exit to use, can be undefined */
3001 //#define MBEDTLS_PLATFORM_STD_TIME            time /**< Default time to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3002 //#define MBEDTLS_PLATFORM_STD_FPRINTF      fprintf /**< Default fprintf to use, can be undefined */
3003 //#define MBEDTLS_PLATFORM_STD_PRINTF        printf /**< Default printf to use, can be undefined */
3004 /* Note: your snprintf must correclty zero-terminate the buffer! */
3005 //#define MBEDTLS_PLATFORM_STD_SNPRINTF    snprintf /**< Default snprintf to use, can be undefined */
3006 //#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS       0 /**< Default exit value to use, can be undefined */
3007 //#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE       1 /**< Default exit value to use, can be undefined */
3008 //#define MBEDTLS_PLATFORM_STD_NV_SEED_READ   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */
3009 //#define MBEDTLS_PLATFORM_STD_NV_SEED_WRITE  mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */
3010 //#define MBEDTLS_PLATFORM_STD_NV_SEED_FILE  "seedfile" /**< Seed file to read/write with default implementation */
3011 
3012 /* To Use Function Macros MBEDTLS_PLATFORM_C must be enabled */
3013 /* MBEDTLS_PLATFORM_XXX_MACRO and MBEDTLS_PLATFORM_XXX_ALT cannot both be defined */
3014 //#define MBEDTLS_PLATFORM_CALLOC_MACRO        calloc /**< Default allocator macro to use, can be undefined */
3015 //#define MBEDTLS_PLATFORM_FREE_MACRO            free /**< Default free macro to use, can be undefined */
3016 //#define MBEDTLS_PLATFORM_EXIT_MACRO            exit /**< Default exit macro to use, can be undefined */
3017 //#define MBEDTLS_PLATFORM_TIME_MACRO            time /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3018 //#define MBEDTLS_PLATFORM_TIME_TYPE_MACRO       time_t /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3019 //#define MBEDTLS_PLATFORM_FPRINTF_MACRO      fprintf /**< Default fprintf macro to use, can be undefined */
3020 //#define MBEDTLS_PLATFORM_PRINTF_MACRO        printf /**< Default printf macro to use, can be undefined */
3021 /* Note: your snprintf must correclty zero-terminate the buffer! */
3022 //#define MBEDTLS_PLATFORM_SNPRINTF_MACRO    snprintf /**< Default snprintf macro to use, can be undefined */
3023 //#define MBEDTLS_PLATFORM_NV_SEED_READ_MACRO   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */
3024 //#define MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO  mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */
3025 
3026 /**
3027  * \brief       This macro is invoked by the library when an invalid parameter
3028  *              is detected that is only checked with MBEDTLS_CHECK_PARAMS
3029  *              (see the documentation of that option for context).
3030  *
3031  *              When you leave this undefined here, a default definition is
3032  *              provided that invokes the function mbedtls_param_failed(),
3033  *              which is declared in platform_util.h for the benefit of the
3034  *              library, but that you need to define in your application.
3035  *
3036  *              When you define this here, this replaces the default
3037  *              definition in platform_util.h (which no longer declares the
3038  *              function mbedtls_param_failed()) and it is your responsibility
3039  *              to make sure this macro expands to something suitable (in
3040  *              particular, that all the necessary declarations are visible
3041  *              from within the library - you can ensure that by providing
3042  *              them in this file next to the macro definition).
3043  *
3044  *              Note that you may define this macro to expand to nothing, in
3045  *              which case you don't have to worry about declarations or
3046  *              definitions. However, you will then be notified about invalid
3047  *              parameters only in non-void functions, and void function will
3048  *              just silently return early on invalid parameters, which
3049  *              partially negates the benefits of enabling
3050  *              #MBEDTLS_CHECK_PARAMS in the first place, so is discouraged.
3051  *
3052  * \param cond  The expression that should evaluate to true, but doesn't.
3053  */
3054 //#define MBEDTLS_PARAM_FAILED( cond )               assert( cond )
3055 
3056 /* SSL Cache options */
3057 //#define MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT       86400 /**< 1 day  */
3058 //#define MBEDTLS_SSL_CACHE_DEFAULT_MAX_ENTRIES      50 /**< Maximum entries in cache */
3059 
3060 /* SSL options */
3061 
3062 /** \def MBEDTLS_SSL_MAX_CONTENT_LEN
3063  *
3064  * Maximum length (in bytes) of incoming and outgoing plaintext fragments.
3065  *
3066  * This determines the size of both the incoming and outgoing TLS I/O buffers
3067  * in such a way that both are capable of holding the specified amount of
3068  * plaintext data, regardless of the protection mechanism used.
3069  *
3070  * To configure incoming and outgoing I/O buffers separately, use
3071  * #MBEDTLS_SSL_IN_CONTENT_LEN and #MBEDTLS_SSL_OUT_CONTENT_LEN,
3072  * which overwrite the value set by this option.
3073  *
3074  * \note When using a value less than the default of 16KB on the client, it is
3075  *       recommended to use the Maximum Fragment Length (MFL) extension to
3076  *       inform the server about this limitation. On the server, there
3077  *       is no supported, standardized way of informing the client about
3078  *       restriction on the maximum size of incoming messages, and unless
3079  *       the limitation has been communicated by other means, it is recommended
3080  *       to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN
3081  *       while keeping the default value of 16KB for the incoming buffer.
3082  *
3083  * Uncomment to set the maximum plaintext size of both
3084  * incoming and outgoing I/O buffers.
3085  */
3086 //#define MBEDTLS_SSL_MAX_CONTENT_LEN             16384
3087 
3088 /** \def MBEDTLS_SSL_IN_CONTENT_LEN
3089  *
3090  * Maximum length (in bytes) of incoming plaintext fragments.
3091  *
3092  * This determines the size of the incoming TLS I/O buffer in such a way
3093  * that it is capable of holding the specified amount of plaintext data,
3094  * regardless of the protection mechanism used.
3095  *
3096  * If this option is undefined, it inherits its value from
3097  * #MBEDTLS_SSL_MAX_CONTENT_LEN.
3098  *
3099  * \note When using a value less than the default of 16KB on the client, it is
3100  *       recommended to use the Maximum Fragment Length (MFL) extension to
3101  *       inform the server about this limitation. On the server, there
3102  *       is no supported, standardized way of informing the client about
3103  *       restriction on the maximum size of incoming messages, and unless
3104  *       the limitation has been communicated by other means, it is recommended
3105  *       to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN
3106  *       while keeping the default value of 16KB for the incoming buffer.
3107  *
3108  * Uncomment to set the maximum plaintext size of the incoming I/O buffer
3109  * independently of the outgoing I/O buffer.
3110  */
3111 //#define MBEDTLS_SSL_IN_CONTENT_LEN              16384
3112 
3113 /** \def MBEDTLS_SSL_OUT_CONTENT_LEN
3114  *
3115  * Maximum length (in bytes) of outgoing plaintext fragments.
3116  *
3117  * This determines the size of the outgoing TLS I/O buffer in such a way
3118  * that it is capable of holding the specified amount of plaintext data,
3119  * regardless of the protection mechanism used.
3120  *
3121  * If this option undefined, it inherits its value from
3122  * #MBEDTLS_SSL_MAX_CONTENT_LEN.
3123  *
3124  * It is possible to save RAM by setting a smaller outward buffer, while keeping
3125  * the default inward 16384 byte buffer to conform to the TLS specification.
3126  *
3127  * The minimum required outward buffer size is determined by the handshake
3128  * protocol's usage. Handshaking will fail if the outward buffer is too small.
3129  * The specific size requirement depends on the configured ciphers and any
3130  * certificate data which is sent during the handshake.
3131  *
3132  * Uncomment to set the maximum plaintext size of the outgoing I/O buffer
3133  * independently of the incoming I/O buffer.
3134  */
3135 //#define MBEDTLS_SSL_OUT_CONTENT_LEN             16384
3136 
3137 /** \def MBEDTLS_SSL_DTLS_MAX_BUFFERING
3138  *
3139  * Maximum number of heap-allocated bytes for the purpose of
3140  * DTLS handshake message reassembly and future message buffering.
3141  *
3142  * This should be at least 9/8 * MBEDTLSSL_IN_CONTENT_LEN
3143  * to account for a reassembled handshake message of maximum size,
3144  * together with its reassembly bitmap.
3145  *
3146  * A value of 2 * MBEDTLS_SSL_IN_CONTENT_LEN (32768 by default)
3147  * should be sufficient for all practical situations as it allows
3148  * to reassembly a large handshake message (such as a certificate)
3149  * while buffering multiple smaller handshake messages.
3150  *
3151  */
3152 //#define MBEDTLS_SSL_DTLS_MAX_BUFFERING             32768
3153 
3154 //#define MBEDTLS_SSL_DEFAULT_TICKET_LIFETIME     86400 /**< Lifetime of session tickets (if enabled) */
3155 //#define MBEDTLS_PSK_MAX_LEN               32 /**< Max size of TLS pre-shared keys, in bytes (default 256 bits) */
3156 //#define MBEDTLS_SSL_COOKIE_TIMEOUT        60 /**< Default expiration delay of DTLS cookies, in seconds if HAVE_TIME, or in number of cookies issued */
3157 
3158 /**
3159  * Complete list of ciphersuites to use, in order of preference.
3160  *
3161  * \warning No dependency checking is done on that field! This option can only
3162  * be used to restrict the set of available ciphersuites. It is your
3163  * responsibility to make sure the needed modules are active.
3164  *
3165  * Use this to save a few hundred bytes of ROM (default ordering of all
3166  * available ciphersuites) and a few to a few hundred bytes of RAM.
3167  *
3168  * The value below is only an example, not the default.
3169  */
3170 //#define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
3171 
3172 /* X509 options */
3173 //#define MBEDTLS_X509_MAX_INTERMEDIATE_CA   8   /**< Maximum number of intermediate CAs in a verification chain. */
3174 //#define MBEDTLS_X509_MAX_FILE_PATH_LEN     512 /**< Maximum length of a path/filename string in bytes including the null terminator character ('\0'). */
3175 
3176 /**
3177  * Allow SHA-1 in the default TLS configuration for certificate signing.
3178  * Without this build-time option, SHA-1 support must be activated explicitly
3179  * through mbedtls_ssl_conf_cert_profile. Turning on this option is not
3180  * recommended because of it is possible to generate SHA-1 collisions, however
3181  * this may be safe for legacy infrastructure where additional controls apply.
3182  *
3183  * \warning   SHA-1 is considered a weak message digest and its use constitutes
3184  *            a security risk. If possible, we recommend avoiding dependencies
3185  *            on it, and considering stronger message digests instead.
3186  *
3187  */
3188 // #define MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
3189 
3190 /**
3191  * Allow SHA-1 in the default TLS configuration for TLS 1.2 handshake
3192  * signature and ciphersuite selection. Without this build-time option, SHA-1
3193  * support must be activated explicitly through mbedtls_ssl_conf_sig_hashes.
3194  * The use of SHA-1 in TLS <= 1.1 and in HMAC-SHA-1 is always allowed by
3195  * default. At the time of writing, there is no practical attack on the use
3196  * of SHA-1 in handshake signatures, hence this option is turned on by default
3197  * to preserve compatibility with existing peers, but the general
3198  * warning applies nonetheless:
3199  *
3200  * \warning   SHA-1 is considered a weak message digest and its use constitutes
3201  *            a security risk. If possible, we recommend avoiding dependencies
3202  *            on it, and considering stronger message digests instead.
3203  *
3204  */
3205 #define MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE
3206 
3207 /**
3208  * Uncomment the macro to let mbed TLS use your alternate implementation of
3209  * mbedtls_platform_zeroize(). This replaces the default implementation in
3210  * platform_util.c.
3211  *
3212  * mbedtls_platform_zeroize() is a widely used function across the library to
3213  * zero a block of memory. The implementation is expected to be secure in the
3214  * sense that it has been written to prevent the compiler from removing calls
3215  * to mbedtls_platform_zeroize() as part of redundant code elimination
3216  * optimizations. However, it is difficult to guarantee that calls to
3217  * mbedtls_platform_zeroize() will not be optimized by the compiler as older
3218  * versions of the C language standards do not provide a secure implementation
3219  * of memset(). Therefore, MBEDTLS_PLATFORM_ZEROIZE_ALT enables users to
3220  * configure their own implementation of mbedtls_platform_zeroize(), for
3221  * example by using directives specific to their compiler, features from newer
3222  * C standards (e.g using memset_s() in C11) or calling a secure memset() from
3223  * their system (e.g explicit_bzero() in BSD).
3224  */
3225 //#define MBEDTLS_PLATFORM_ZEROIZE_ALT
3226 
3227 /**
3228  * Uncomment the macro to let Mbed TLS use your alternate implementation of
3229  * mbedtls_platform_gmtime_r(). This replaces the default implementation in
3230  * platform_util.c.
3231  *
3232  * gmtime() is not a thread-safe function as defined in the C standard. The
3233  * library will try to use safer implementations of this function, such as
3234  * gmtime_r() when available. However, if Mbed TLS cannot identify the target
3235  * system, the implementation of mbedtls_platform_gmtime_r() will default to
3236  * using the standard gmtime(). In this case, calls from the library to
3237  * gmtime() will be guarded by the global mutex mbedtls_threading_gmtime_mutex
3238  * if MBEDTLS_THREADING_C is enabled. We recommend that calls from outside the
3239  * library are also guarded with this mutex to avoid race conditions. However,
3240  * if the macro MBEDTLS_PLATFORM_GMTIME_R_ALT is defined, Mbed TLS will
3241  * unconditionally use the implementation for mbedtls_platform_gmtime_r()
3242  * supplied at compile time.
3243  */
3244 //#define MBEDTLS_PLATFORM_GMTIME_R_ALT
3245 
3246 /* \} name SECTION: Customisation configuration options */
3247 
3248 /* Target and application specific configurations */
3249 //#define YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE "mbedtls/target_config.h"
3250 
3251 #if defined(TARGET_LIKE_MBED) && defined(YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE)
3252 #include YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE
3253 #endif
3254 
3255 /*
3256  * Allow user to override any previous default.
3257  *
3258  * Use two macro names for that, as:
3259  * - with yotta the prefix YOTTA_CFG_ is forced
3260  * - without yotta is looks weird to have a YOTTA prefix.
3261  */
3262 #if defined(YOTTA_CFG_MBEDTLS_USER_CONFIG_FILE)
3263 #include YOTTA_CFG_MBEDTLS_USER_CONFIG_FILE
3264 #elif defined(MBEDTLS_USER_CONFIG_FILE)
3265 #include MBEDTLS_USER_CONFIG_FILE
3266 #endif
3267 
3268 #include "mbedtls/check_config.h"
3269 
3270 #endif /* MBEDTLS_CONFIG_H */
3271