1 /**
2  * \file config.h
3  *
4  * \brief Configuration options (set of defines)
5  *
6  *  This set of compile-time options may be used to enable
7  *  or disable features selectively, and reduce the global
8  *  memory footprint.
9  */
10 /*
11  *  Copyright The Mbed TLS Contributors
12  *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
13  *
14  *  This file is provided under the Apache License 2.0, or the
15  *  GNU General Public License v2.0 or later.
16  *
17  *  **********
18  *  Apache License 2.0:
19  *
20  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
21  *  not use this file except in compliance with the License.
22  *  You may obtain a copy of the License at
23  *
24  *  http://www.apache.org/licenses/LICENSE-2.0
25  *
26  *  Unless required by applicable law or agreed to in writing, software
27  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
28  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
29  *  See the License for the specific language governing permissions and
30  *  limitations under the License.
31  *
32  *  **********
33  *
34  *  **********
35  *  GNU General Public License v2.0 or later:
36  *
37  *  This program is free software; you can redistribute it and/or modify
38  *  it under the terms of the GNU General Public License as published by
39  *  the Free Software Foundation; either version 2 of the License, or
40  *  (at your option) any later version.
41  *
42  *  This program is distributed in the hope that it will be useful,
43  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
44  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
45  *  GNU General Public License for more details.
46  *
47  *  You should have received a copy of the GNU General Public License along
48  *  with this program; if not, write to the Free Software Foundation, Inc.,
49  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
50  *
51  *  **********
52  */
53 
54 #ifndef MBEDTLS_CONFIG_H
55 #define MBEDTLS_CONFIG_H
56 
57 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_DEPRECATE)
58 #define _CRT_SECURE_NO_DEPRECATE 1
59 #endif
60 
61 /**
62  * \name SECTION: System support
63  *
64  * This section sets system specific settings.
65  * \{
66  */
67 
68 /**
69  * \def MBEDTLS_HAVE_ASM
70  *
71  * The compiler has support for asm().
72  *
73  * Requires support for asm() in compiler.
74  *
75  * Used in:
76  *      library/aria.c
77  *      library/timing.c
78  *      include/mbedtls/bn_mul.h
79  *
80  * Required by:
81  *      MBEDTLS_AESNI_C
82  *      MBEDTLS_PADLOCK_C
83  *
84  * Comment to disable the use of assembly code.
85  */
86 #define MBEDTLS_HAVE_ASM
87 
88 /**
89  * \def MBEDTLS_NO_UDBL_DIVISION
90  *
91  * The platform lacks support for double-width integer division (64-bit
92  * division on a 32-bit platform, 128-bit division on a 64-bit platform).
93  *
94  * Used in:
95  *      include/mbedtls/bignum.h
96  *      library/bignum.c
97  *
98  * The bignum code uses double-width division to speed up some operations.
99  * Double-width division is often implemented in software that needs to
100  * be linked with the program. The presence of a double-width integer
101  * type is usually detected automatically through preprocessor macros,
102  * but the automatic detection cannot know whether the code needs to
103  * and can be linked with an implementation of division for that type.
104  * By default division is assumed to be usable if the type is present.
105  * Uncomment this option to prevent the use of double-width division.
106  *
107  * Note that division for the native integer type is always required.
108  * Furthermore, a 64-bit type is always required even on a 32-bit
109  * platform, but it need not support multiplication or division. In some
110  * cases it is also desirable to disable some double-width operations. For
111  * example, if double-width division is implemented in software, disabling
112  * it can reduce code size in some embedded targets.
113  */
114 //#define MBEDTLS_NO_UDBL_DIVISION
115 
116 /**
117  * \def MBEDTLS_NO_64BIT_MULTIPLICATION
118  *
119  * The platform lacks support for 32x32 -> 64-bit multiplication.
120  *
121  * Used in:
122  *      library/poly1305.c
123  *
124  * Some parts of the library may use multiplication of two unsigned 32-bit
125  * operands with a 64-bit result in order to speed up computations. On some
126  * platforms, this is not available in hardware and has to be implemented in
127  * software, usually in a library provided by the toolchain.
128  *
129  * Sometimes it is not desirable to have to link to that library. This option
130  * removes the dependency of that library on platforms that lack a hardware
131  * 64-bit multiplier by embedding a software implementation in Mbed TLS.
132  *
133  * Note that depending on the compiler, this may decrease performance compared
134  * to using the library function provided by the toolchain.
135  */
136 //#define MBEDTLS_NO_64BIT_MULTIPLICATION
137 
138 /**
139  * \def MBEDTLS_HAVE_SSE2
140  *
141  * CPU supports SSE2 instruction set.
142  *
143  * Uncomment if the CPU supports SSE2 (IA-32 specific).
144  */
145 //#define MBEDTLS_HAVE_SSE2
146 
147 /**
148  * \def MBEDTLS_HAVE_TIME
149  *
150  * System has time.h and time().
151  * The time does not need to be correct, only time differences are used,
152  * by contrast with MBEDTLS_HAVE_TIME_DATE
153  *
154  * Defining MBEDTLS_HAVE_TIME allows you to specify MBEDTLS_PLATFORM_TIME_ALT,
155  * MBEDTLS_PLATFORM_TIME_MACRO, MBEDTLS_PLATFORM_TIME_TYPE_MACRO and
156  * MBEDTLS_PLATFORM_STD_TIME.
157  *
158  * Comment if your system does not support time functions
159  */
160 #define MBEDTLS_HAVE_TIME
161 
162 /**
163  * \def MBEDTLS_HAVE_TIME_DATE
164  *
165  * System has time.h, time(), and an implementation for
166  * mbedtls_platform_gmtime_r() (see below).
167  * The time needs to be correct (not necessarily very accurate, but at least
168  * the date should be correct). This is used to verify the validity period of
169  * X.509 certificates.
170  *
171  * Comment if your system does not have a correct clock.
172  *
173  * \note mbedtls_platform_gmtime_r() is an abstraction in platform_util.h that
174  * behaves similarly to the gmtime_r() function from the C standard. Refer to
175  * the documentation for mbedtls_platform_gmtime_r() for more information.
176  *
177  * \note It is possible to configure an implementation for
178  * mbedtls_platform_gmtime_r() at compile-time by using the macro
179  * MBEDTLS_PLATFORM_GMTIME_R_ALT.
180  */
181 #define MBEDTLS_HAVE_TIME_DATE
182 
183 /**
184  * \def MBEDTLS_PLATFORM_MEMORY
185  *
186  * Enable the memory allocation layer.
187  *
188  * By default mbed TLS uses the system-provided calloc() and free().
189  * This allows different allocators (self-implemented or provided) to be
190  * provided to the platform abstraction layer.
191  *
192  * Enabling MBEDTLS_PLATFORM_MEMORY without the
193  * MBEDTLS_PLATFORM_{FREE,CALLOC}_MACROs will provide
194  * "mbedtls_platform_set_calloc_free()" allowing you to set an alternative calloc() and
195  * free() function pointer at runtime.
196  *
197  * Enabling MBEDTLS_PLATFORM_MEMORY and specifying
198  * MBEDTLS_PLATFORM_{CALLOC,FREE}_MACROs will allow you to specify the
199  * alternate function at compile time.
200  *
201  * Requires: MBEDTLS_PLATFORM_C
202  *
203  * Enable this layer to allow use of alternative memory allocators.
204  */
205 //#define MBEDTLS_PLATFORM_MEMORY
206 
207 /**
208  * \def MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
209  *
210  * Do not assign standard functions in the platform layer (e.g. calloc() to
211  * MBEDTLS_PLATFORM_STD_CALLOC and printf() to MBEDTLS_PLATFORM_STD_PRINTF)
212  *
213  * This makes sure there are no linking errors on platforms that do not support
214  * these functions. You will HAVE to provide alternatives, either at runtime
215  * via the platform_set_xxx() functions or at compile time by setting
216  * the MBEDTLS_PLATFORM_STD_XXX defines, or enabling a
217  * MBEDTLS_PLATFORM_XXX_MACRO.
218  *
219  * Requires: MBEDTLS_PLATFORM_C
220  *
221  * Uncomment to prevent default assignment of standard functions in the
222  * platform layer.
223  */
224 //#define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
225 
226 /**
227  * \def MBEDTLS_PLATFORM_EXIT_ALT
228  *
229  * MBEDTLS_PLATFORM_XXX_ALT: Uncomment a macro to let mbed TLS support the
230  * function in the platform abstraction layer.
231  *
232  * Example: In case you uncomment MBEDTLS_PLATFORM_PRINTF_ALT, mbed TLS will
233  * provide a function "mbedtls_platform_set_printf()" that allows you to set an
234  * alternative printf function pointer.
235  *
236  * All these define require MBEDTLS_PLATFORM_C to be defined!
237  *
238  * \note MBEDTLS_PLATFORM_SNPRINTF_ALT is required on Windows;
239  * it will be enabled automatically by check_config.h
240  *
241  * \warning MBEDTLS_PLATFORM_XXX_ALT cannot be defined at the same time as
242  * MBEDTLS_PLATFORM_XXX_MACRO!
243  *
244  * Requires: MBEDTLS_PLATFORM_TIME_ALT requires MBEDTLS_HAVE_TIME
245  *
246  * Uncomment a macro to enable alternate implementation of specific base
247  * platform function
248  */
249 //#define MBEDTLS_PLATFORM_EXIT_ALT
250 //#define MBEDTLS_PLATFORM_TIME_ALT
251 //#define MBEDTLS_PLATFORM_FPRINTF_ALT
252 //#define MBEDTLS_PLATFORM_PRINTF_ALT
253 //#define MBEDTLS_PLATFORM_SNPRINTF_ALT
254 //#define MBEDTLS_PLATFORM_NV_SEED_ALT
255 //#define MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT
256 
257 /**
258  * \def MBEDTLS_DEPRECATED_WARNING
259  *
260  * Mark deprecated functions so that they generate a warning if used.
261  * Functions deprecated in one version will usually be removed in the next
262  * version. You can enable this to help you prepare the transition to a new
263  * major version by making sure your code is not using these functions.
264  *
265  * This only works with GCC and Clang. With other compilers, you may want to
266  * use MBEDTLS_DEPRECATED_REMOVED
267  *
268  * Uncomment to get warnings on using deprecated functions.
269  */
270 //#define MBEDTLS_DEPRECATED_WARNING
271 
272 /**
273  * \def MBEDTLS_DEPRECATED_REMOVED
274  *
275  * Remove deprecated functions so that they generate an error if used.
276  * Functions deprecated in one version will usually be removed in the next
277  * version. You can enable this to help you prepare the transition to a new
278  * major version by making sure your code is not using these functions.
279  *
280  * Uncomment to get errors on using deprecated functions.
281  */
282 //#define MBEDTLS_DEPRECATED_REMOVED
283 
284 /**
285  * \def MBEDTLS_CHECK_PARAMS
286  *
287  * This configuration option controls whether the library validates more of
288  * the parameters passed to it.
289  *
290  * When this flag is not defined, the library only attempts to validate an
291  * input parameter if: (1) they may come from the outside world (such as the
292  * network, the filesystem, etc.) or (2) not validating them could result in
293  * internal memory errors such as overflowing a buffer controlled by the
294  * library. On the other hand, it doesn't attempt to validate parameters whose
295  * values are fully controlled by the application (such as pointers).
296  *
297  * When this flag is defined, the library additionally attempts to validate
298  * parameters that are fully controlled by the application, and should always
299  * be valid if the application code is fully correct and trusted.
300  *
301  * For example, when a function accepts as input a pointer to a buffer that may
302  * contain untrusted data, and its documentation mentions that this pointer
303  * must not be NULL:
304  * - The pointer is checked to be non-NULL only if this option is enabled.
305  * - The content of the buffer is always validated.
306  *
307  * When this flag is defined, if a library function receives a parameter that
308  * is invalid:
309  * 1. The function will invoke the macro MBEDTLS_PARAM_FAILED().
310  * 2. If MBEDTLS_PARAM_FAILED() did not terminate the program, the function
311  *   will immediately return. If the function returns an Mbed TLS error code,
312  *   the error code in this case is MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
313  *
314  * When defining this flag, you also need to arrange a definition for
315  * MBEDTLS_PARAM_FAILED(). You can do this by any of the following methods:
316  * - By default, the library defines MBEDTLS_PARAM_FAILED() to call a
317  *   function mbedtls_param_failed(), but the library does not define this
318  *   function. If you do not make any other arrangements, you must provide
319  *   the function mbedtls_param_failed() in your application.
320  *   See `platform_util.h` for its prototype.
321  * - If you enable the macro #MBEDTLS_CHECK_PARAMS_ASSERT, then the
322  *   library defines #MBEDTLS_PARAM_FAILED(\c cond) to be `assert(cond)`.
323  *   You can still supply an alternative definition of
324  *   MBEDTLS_PARAM_FAILED(), which may call `assert`.
325  * - If you define a macro MBEDTLS_PARAM_FAILED() before including `config.h`
326  *   or you uncomment the definition of MBEDTLS_PARAM_FAILED() in `config.h`,
327  *   the library will call the macro that you defined and will not supply
328  *   its own version. Note that if MBEDTLS_PARAM_FAILED() calls `assert`,
329  *   you need to enable #MBEDTLS_CHECK_PARAMS_ASSERT so that library source
330  *   files include `<assert.h>`.
331  *
332  * Uncomment to enable validation of application-controlled parameters.
333  */
334 //#define MBEDTLS_CHECK_PARAMS
335 
336 /**
337  * \def MBEDTLS_CHECK_PARAMS_ASSERT
338  *
339  * Allow MBEDTLS_PARAM_FAILED() to call `assert`, and make it default to
340  * `assert`. This macro is only used if #MBEDTLS_CHECK_PARAMS is defined.
341  *
342  * If this macro is not defined, then MBEDTLS_PARAM_FAILED() defaults to
343  * calling a function mbedtls_param_failed(). See the documentation of
344  * #MBEDTLS_CHECK_PARAMS for details.
345  *
346  * Uncomment to allow MBEDTLS_PARAM_FAILED() to call `assert`.
347  */
348 //#define MBEDTLS_CHECK_PARAMS_ASSERT
349 
350 /* \} name SECTION: System support */
351 
352 /**
353  * \name SECTION: mbed TLS feature support
354  *
355  * This section sets support for features that are or are not needed
356  * within the modules that are enabled.
357  * \{
358  */
359 
360 /**
361  * \def MBEDTLS_TIMING_ALT
362  *
363  * Uncomment to provide your own alternate implementation for mbedtls_timing_hardclock(),
364  * mbedtls_timing_get_timer(), mbedtls_set_alarm(), mbedtls_set/get_delay()
365  *
366  * Only works if you have MBEDTLS_TIMING_C enabled.
367  *
368  * You will need to provide a header "timing_alt.h" and an implementation at
369  * compile time.
370  */
371 //#define MBEDTLS_TIMING_ALT
372 
373 /**
374  * \def MBEDTLS_AES_ALT
375  *
376  * MBEDTLS__MODULE_NAME__ALT: Uncomment a macro to let mbed TLS use your
377  * alternate core implementation of a symmetric crypto, an arithmetic or hash
378  * module (e.g. platform specific assembly optimized implementations). Keep
379  * in mind that the function prototypes should remain the same.
380  *
381  * This replaces the whole module. If you only want to replace one of the
382  * functions, use one of the MBEDTLS__FUNCTION_NAME__ALT flags.
383  *
384  * Example: In case you uncomment MBEDTLS_AES_ALT, mbed TLS will no longer
385  * provide the "struct mbedtls_aes_context" definition and omit the base
386  * function declarations and implementations. "aes_alt.h" will be included from
387  * "aes.h" to include the new function definitions.
388  *
389  * Uncomment a macro to enable alternate implementation of the corresponding
390  * module.
391  *
392  * \warning   MD2, MD4, MD5, ARC4, DES and SHA-1 are considered weak and their
393  *            use constitutes a security risk. If possible, we recommend
394  *            avoiding dependencies on them, and considering stronger message
395  *            digests and ciphers instead.
396  *
397  */
398 //#define MBEDTLS_AES_ALT
399 //#define MBEDTLS_ARC4_ALT
400 //#define MBEDTLS_ARIA_ALT
401 //#define MBEDTLS_BLOWFISH_ALT
402 //#define MBEDTLS_CAMELLIA_ALT
403 //#define MBEDTLS_CCM_ALT
404 //#define MBEDTLS_CHACHA20_ALT
405 //#define MBEDTLS_CHACHAPOLY_ALT
406 //#define MBEDTLS_CMAC_ALT
407 //#define MBEDTLS_DES_ALT
408 //#define MBEDTLS_DHM_ALT
409 //#define MBEDTLS_ECJPAKE_ALT
410 //#define MBEDTLS_GCM_ALT
411 //#define MBEDTLS_NIST_KW_ALT
412 //#define MBEDTLS_MD2_ALT
413 //#define MBEDTLS_MD4_ALT
414 //#define MBEDTLS_MD5_ALT
415 //#define MBEDTLS_POLY1305_ALT
416 //#define MBEDTLS_RIPEMD160_ALT
417 //#define MBEDTLS_RSA_ALT
418 //#define MBEDTLS_SHA1_ALT
419 //#define MBEDTLS_SHA256_ALT
420 //#define MBEDTLS_SHA512_ALT
421 //#define MBEDTLS_XTEA_ALT
422 
423 /*
424  * When replacing the elliptic curve module, pleace consider, that it is
425  * implemented with two .c files:
426  *      - ecp.c
427  *      - ecp_curves.c
428  * You can replace them very much like all the other MBEDTLS__MODULE_NAME__ALT
429  * macros as described above. The only difference is that you have to make sure
430  * that you provide functionality for both .c files.
431  */
432 //#define MBEDTLS_ECP_ALT
433 
434 /**
435  * \def MBEDTLS_MD2_PROCESS_ALT
436  *
437  * MBEDTLS__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use you
438  * alternate core implementation of symmetric crypto or hash function. Keep in
439  * mind that function prototypes should remain the same.
440  *
441  * This replaces only one function. The header file from mbed TLS is still
442  * used, in contrast to the MBEDTLS__MODULE_NAME__ALT flags.
443  *
444  * Example: In case you uncomment MBEDTLS_SHA256_PROCESS_ALT, mbed TLS will
445  * no longer provide the mbedtls_sha1_process() function, but it will still provide
446  * the other function (using your mbedtls_sha1_process() function) and the definition
447  * of mbedtls_sha1_context, so your implementation of mbedtls_sha1_process must be compatible
448  * with this definition.
449  *
450  * \note Because of a signature change, the core AES encryption and decryption routines are
451  *       currently named mbedtls_aes_internal_encrypt and mbedtls_aes_internal_decrypt,
452  *       respectively. When setting up alternative implementations, these functions should
453  *       be overridden, but the wrapper functions mbedtls_aes_decrypt and mbedtls_aes_encrypt
454  *       must stay untouched.
455  *
456  * \note If you use the AES_xxx_ALT macros, then it is recommended to also set
457  *       MBEDTLS_AES_ROM_TABLES in order to help the linker garbage-collect the AES
458  *       tables.
459  *
460  * Uncomment a macro to enable alternate implementation of the corresponding
461  * function.
462  *
463  * \warning   MD2, MD4, MD5, DES and SHA-1 are considered weak and their use
464  *            constitutes a security risk. If possible, we recommend avoiding
465  *            dependencies on them, and considering stronger message digests
466  *            and ciphers instead.
467  *
468  * \warning   If both MBEDTLS_ECDSA_SIGN_ALT and MBEDTLS_ECDSA_DETERMINISTIC are
469  *            enabled, then the deterministic ECDH signature functions pass the
470  *            the static HMAC-DRBG as RNG to mbedtls_ecdsa_sign(). Therefore
471  *            alternative implementations should use the RNG only for generating
472  *            the ephemeral key and nothing else. If this is not possible, then
473  *            MBEDTLS_ECDSA_DETERMINISTIC should be disabled and an alternative
474  *            implementation should be provided for mbedtls_ecdsa_sign_det_ext()
475  *            (and for mbedtls_ecdsa_sign_det() too if backward compatibility is
476  *            desirable).
477  *
478  */
479 //#define MBEDTLS_MD2_PROCESS_ALT
480 //#define MBEDTLS_MD4_PROCESS_ALT
481 //#define MBEDTLS_MD5_PROCESS_ALT
482 //#define MBEDTLS_RIPEMD160_PROCESS_ALT
483 //#define MBEDTLS_SHA1_PROCESS_ALT
484 //#define MBEDTLS_SHA256_PROCESS_ALT
485 //#define MBEDTLS_SHA512_PROCESS_ALT
486 //#define MBEDTLS_DES_SETKEY_ALT
487 //#define MBEDTLS_DES_CRYPT_ECB_ALT
488 //#define MBEDTLS_DES3_CRYPT_ECB_ALT
489 //#define MBEDTLS_AES_SETKEY_ENC_ALT
490 //#define MBEDTLS_AES_SETKEY_DEC_ALT
491 //#define MBEDTLS_AES_ENCRYPT_ALT
492 //#define MBEDTLS_AES_DECRYPT_ALT
493 //#define MBEDTLS_ECDH_GEN_PUBLIC_ALT
494 //#define MBEDTLS_ECDH_COMPUTE_SHARED_ALT
495 //#define MBEDTLS_ECDSA_VERIFY_ALT
496 //#define MBEDTLS_ECDSA_SIGN_ALT
497 //#define MBEDTLS_ECDSA_GENKEY_ALT
498 
499 /**
500  * \def MBEDTLS_ECP_INTERNAL_ALT
501  *
502  * Expose a part of the internal interface of the Elliptic Curve Point module.
503  *
504  * MBEDTLS_ECP__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use your
505  * alternative core implementation of elliptic curve arithmetic. Keep in mind
506  * that function prototypes should remain the same.
507  *
508  * This partially replaces one function. The header file from mbed TLS is still
509  * used, in contrast to the MBEDTLS_ECP_ALT flag. The original implementation
510  * is still present and it is used for group structures not supported by the
511  * alternative.
512  *
513  * Any of these options become available by defining MBEDTLS_ECP_INTERNAL_ALT
514  * and implementing the following functions:
515  *      unsigned char mbedtls_internal_ecp_grp_capable(
516  *          const mbedtls_ecp_group *grp )
517  *      int  mbedtls_internal_ecp_init( const mbedtls_ecp_group *grp )
518  *      void mbedtls_internal_ecp_free( const mbedtls_ecp_group *grp )
519  * The mbedtls_internal_ecp_grp_capable function should return 1 if the
520  * replacement functions implement arithmetic for the given group and 0
521  * otherwise.
522  * The functions mbedtls_internal_ecp_init and mbedtls_internal_ecp_free are
523  * called before and after each point operation and provide an opportunity to
524  * implement optimized set up and tear down instructions.
525  *
526  * Example: In case you uncomment MBEDTLS_ECP_INTERNAL_ALT and
527  * MBEDTLS_ECP_DOUBLE_JAC_ALT, mbed TLS will still provide the ecp_double_jac
528  * function, but will use your mbedtls_internal_ecp_double_jac if the group is
529  * supported (your mbedtls_internal_ecp_grp_capable function returns 1 when
530  * receives it as an argument). If the group is not supported then the original
531  * implementation is used. The other functions and the definition of
532  * mbedtls_ecp_group and mbedtls_ecp_point will not change, so your
533  * implementation of mbedtls_internal_ecp_double_jac and
534  * mbedtls_internal_ecp_grp_capable must be compatible with this definition.
535  *
536  * Uncomment a macro to enable alternate implementation of the corresponding
537  * function.
538  */
539 /* Required for all the functions in this section */
540 //#define MBEDTLS_ECP_INTERNAL_ALT
541 /* Support for Weierstrass curves with Jacobi representation */
542 //#define MBEDTLS_ECP_RANDOMIZE_JAC_ALT
543 //#define MBEDTLS_ECP_ADD_MIXED_ALT
544 //#define MBEDTLS_ECP_DOUBLE_JAC_ALT
545 //#define MBEDTLS_ECP_NORMALIZE_JAC_MANY_ALT
546 //#define MBEDTLS_ECP_NORMALIZE_JAC_ALT
547 /* Support for curves with Montgomery arithmetic */
548 //#define MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT
549 //#define MBEDTLS_ECP_RANDOMIZE_MXZ_ALT
550 //#define MBEDTLS_ECP_NORMALIZE_MXZ_ALT
551 
552 /**
553  * \def MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN
554  *
555  * Enable testing of the constant-flow nature of some sensitive functions with
556  * clang's MemorySanitizer. This causes some existing tests to also test
557  * this non-functional property of the code under test.
558  *
559  * This setting requires compiling with clang -fsanitize=memory. The test
560  * suites can then be run normally.
561  *
562  * \warning This macro is only used for extended testing; it is not considered
563  * part of the library's API, so it may change or disappear at any time.
564  *
565  * Uncomment to enable testing of the constant-flow nature of selected code.
566  */
567 //#define MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN
568 
569 /**
570  * \def MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND
571  *
572  * Enable testing of the constant-flow nature of some sensitive functions with
573  * valgrind's memcheck tool. This causes some existing tests to also test
574  * this non-functional property of the code under test.
575  *
576  * This setting requires valgrind headers for building, and is only useful for
577  * testing if the tests suites are run with valgrind's memcheck. This can be
578  * done for an individual test suite with 'valgrind ./test_suite_xxx', or when
579  * using CMake, this can be done for all test suites with 'make memcheck'.
580  *
581  * \warning This macro is only used for extended testing; it is not considered
582  * part of the library's API, so it may change or disappear at any time.
583  *
584  * Uncomment to enable testing of the constant-flow nature of selected code.
585  */
586 //#define MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND
587 
588 /**
589  * \def MBEDTLS_TEST_NULL_ENTROPY
590  *
591  * Enables testing and use of mbed TLS without any configured entropy sources.
592  * This permits use of the library on platforms before an entropy source has
593  * been integrated (see for example the MBEDTLS_ENTROPY_HARDWARE_ALT or the
594  * MBEDTLS_ENTROPY_NV_SEED switches).
595  *
596  * WARNING! This switch MUST be disabled in production builds, and is suitable
597  * only for development.
598  * Enabling the switch negates any security provided by the library.
599  *
600  * Requires MBEDTLS_ENTROPY_C, MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
601  *
602  */
603 //#define MBEDTLS_TEST_NULL_ENTROPY
604 
605 /**
606  * \def MBEDTLS_ENTROPY_HARDWARE_ALT
607  *
608  * Uncomment this macro to let mbed TLS use your own implementation of a
609  * hardware entropy collector.
610  *
611  * Your function must be called \c mbedtls_hardware_poll(), have the same
612  * prototype as declared in entropy_poll.h, and accept NULL as first argument.
613  *
614  * Uncomment to use your own hardware entropy collector.
615  */
616 //#define MBEDTLS_ENTROPY_HARDWARE_ALT
617 
618 /**
619  * \def MBEDTLS_AES_ROM_TABLES
620  *
621  * Use precomputed AES tables stored in ROM.
622  *
623  * Uncomment this macro to use precomputed AES tables stored in ROM.
624  * Comment this macro to generate AES tables in RAM at runtime.
625  *
626  * Tradeoff: Using precomputed ROM tables reduces RAM usage by ~8kb
627  * (or ~2kb if \c MBEDTLS_AES_FEWER_TABLES is used) and reduces the
628  * initialization time before the first AES operation can be performed.
629  * It comes at the cost of additional ~8kb ROM use (resp. ~2kb if \c
630  * MBEDTLS_AES_FEWER_TABLES below is used), and potentially degraded
631  * performance if ROM access is slower than RAM access.
632  *
633  * This option is independent of \c MBEDTLS_AES_FEWER_TABLES.
634  *
635  */
636 //#define MBEDTLS_AES_ROM_TABLES
637 
638 /**
639  * \def MBEDTLS_AES_FEWER_TABLES
640  *
641  * Use less ROM/RAM for AES tables.
642  *
643  * Uncommenting this macro omits 75% of the AES tables from
644  * ROM / RAM (depending on the value of \c MBEDTLS_AES_ROM_TABLES)
645  * by computing their values on the fly during operations
646  * (the tables are entry-wise rotations of one another).
647  *
648  * Tradeoff: Uncommenting this reduces the RAM / ROM footprint
649  * by ~6kb but at the cost of more arithmetic operations during
650  * runtime. Specifically, one has to compare 4 accesses within
651  * different tables to 4 accesses with additional arithmetic
652  * operations within the same table. The performance gain/loss
653  * depends on the system and memory details.
654  *
655  * This option is independent of \c MBEDTLS_AES_ROM_TABLES.
656  *
657  */
658 //#define MBEDTLS_AES_FEWER_TABLES
659 
660 /**
661  * \def MBEDTLS_CAMELLIA_SMALL_MEMORY
662  *
663  * Use less ROM for the Camellia implementation (saves about 768 bytes).
664  *
665  * Uncomment this macro to use less memory for Camellia.
666  */
667 //#define MBEDTLS_CAMELLIA_SMALL_MEMORY
668 
669 /**
670  * \def MBEDTLS_CIPHER_MODE_CBC
671  *
672  * Enable Cipher Block Chaining mode (CBC) for symmetric ciphers.
673  */
674 #define MBEDTLS_CIPHER_MODE_CBC
675 
676 /**
677  * \def MBEDTLS_CIPHER_MODE_CFB
678  *
679  * Enable Cipher Feedback mode (CFB) for symmetric ciphers.
680  */
681 #define MBEDTLS_CIPHER_MODE_CFB
682 
683 /**
684  * \def MBEDTLS_CIPHER_MODE_CTR
685  *
686  * Enable Counter Block Cipher mode (CTR) for symmetric ciphers.
687  */
688 #define MBEDTLS_CIPHER_MODE_CTR
689 
690 /**
691  * \def MBEDTLS_CIPHER_MODE_OFB
692  *
693  * Enable Output Feedback mode (OFB) for symmetric ciphers.
694  */
695 #define MBEDTLS_CIPHER_MODE_OFB
696 
697 /**
698  * \def MBEDTLS_CIPHER_MODE_XTS
699  *
700  * Enable Xor-encrypt-xor with ciphertext stealing mode (XTS) for AES.
701  */
702 #define MBEDTLS_CIPHER_MODE_XTS
703 
704 /**
705  * \def MBEDTLS_CIPHER_NULL_CIPHER
706  *
707  * Enable NULL cipher.
708  * Warning: Only do so when you know what you are doing. This allows for
709  * encryption or channels without any security!
710  *
711  * Requires MBEDTLS_ENABLE_WEAK_CIPHERSUITES as well to enable
712  * the following ciphersuites:
713  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_NULL_SHA
714  *      MBEDTLS_TLS_ECDH_RSA_WITH_NULL_SHA
715  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_NULL_SHA
716  *      MBEDTLS_TLS_ECDHE_RSA_WITH_NULL_SHA
717  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA384
718  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA256
719  *      MBEDTLS_TLS_ECDHE_PSK_WITH_NULL_SHA
720  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA384
721  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA256
722  *      MBEDTLS_TLS_DHE_PSK_WITH_NULL_SHA
723  *      MBEDTLS_TLS_RSA_WITH_NULL_SHA256
724  *      MBEDTLS_TLS_RSA_WITH_NULL_SHA
725  *      MBEDTLS_TLS_RSA_WITH_NULL_MD5
726  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA384
727  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA256
728  *      MBEDTLS_TLS_RSA_PSK_WITH_NULL_SHA
729  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA384
730  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA256
731  *      MBEDTLS_TLS_PSK_WITH_NULL_SHA
732  *
733  * Uncomment this macro to enable the NULL cipher and ciphersuites
734  */
735 //#define MBEDTLS_CIPHER_NULL_CIPHER
736 
737 /**
738  * \def MBEDTLS_CIPHER_PADDING_PKCS7
739  *
740  * MBEDTLS_CIPHER_PADDING_XXX: Uncomment or comment macros to add support for
741  * specific padding modes in the cipher layer with cipher modes that support
742  * padding (e.g. CBC)
743  *
744  * If you disable all padding modes, only full blocks can be used with CBC.
745  *
746  * Enable padding modes in the cipher layer.
747  */
748 #define MBEDTLS_CIPHER_PADDING_PKCS7
749 #define MBEDTLS_CIPHER_PADDING_ONE_AND_ZEROS
750 #define MBEDTLS_CIPHER_PADDING_ZEROS_AND_LEN
751 #define MBEDTLS_CIPHER_PADDING_ZEROS
752 
753 /** \def MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
754  *
755  * Uncomment this macro to use a 128-bit key in the CTR_DRBG module.
756  * By default, CTR_DRBG uses a 256-bit key.
757  */
758 //#define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
759 
760 /**
761  * \def MBEDTLS_ENABLE_WEAK_CIPHERSUITES
762  *
763  * Enable weak ciphersuites in SSL / TLS.
764  * Warning: Only do so when you know what you are doing. This allows for
765  * channels with virtually no security at all!
766  *
767  * This enables the following ciphersuites:
768  *      MBEDTLS_TLS_RSA_WITH_DES_CBC_SHA
769  *      MBEDTLS_TLS_DHE_RSA_WITH_DES_CBC_SHA
770  *
771  * Uncomment this macro to enable weak ciphersuites
772  *
773  * \warning   DES is considered a weak cipher and its use constitutes a
774  *            security risk. We recommend considering stronger ciphers instead.
775  */
776 //#define MBEDTLS_ENABLE_WEAK_CIPHERSUITES
777 
778 /**
779  * \def MBEDTLS_REMOVE_ARC4_CIPHERSUITES
780  *
781  * Remove RC4 ciphersuites by default in SSL / TLS.
782  * This flag removes the ciphersuites based on RC4 from the default list as
783  * returned by mbedtls_ssl_list_ciphersuites(). However, it is still possible to
784  * enable (some of) them with mbedtls_ssl_conf_ciphersuites() by including them
785  * explicitly.
786  *
787  * Uncomment this macro to remove RC4 ciphersuites by default.
788  */
789 #define MBEDTLS_REMOVE_ARC4_CIPHERSUITES
790 
791 /**
792  * \def MBEDTLS_REMOVE_3DES_CIPHERSUITES
793  *
794  * Remove 3DES ciphersuites by default in SSL / TLS.
795  * This flag removes the ciphersuites based on 3DES from the default list as
796  * returned by mbedtls_ssl_list_ciphersuites(). However, it is still possible
797  * to enable (some of) them with mbedtls_ssl_conf_ciphersuites() by including
798  * them explicitly.
799  *
800  * A man-in-the-browser attacker can recover authentication tokens sent through
801  * a TLS connection using a 3DES based cipher suite (see "On the Practical
802  * (In-)Security of 64-bit Block Ciphers" by Karthikeyan Bhargavan and Gaëtan
803  * Leurent, see https://sweet32.info/SWEET32_CCS16.pdf). If this attack falls
804  * in your threat model or you are unsure, then you should keep this option
805  * enabled to remove 3DES based cipher suites.
806  *
807  * Comment this macro to keep 3DES in the default ciphersuite list.
808  */
809 #define MBEDTLS_REMOVE_3DES_CIPHERSUITES
810 
811 /**
812  * \def MBEDTLS_ECP_DP_SECP192R1_ENABLED
813  *
814  * MBEDTLS_ECP_XXXX_ENABLED: Enables specific curves within the Elliptic Curve
815  * module.  By default all supported curves are enabled.
816  *
817  * Comment macros to disable the curve and functions for it
818  */
819 #define MBEDTLS_ECP_DP_SECP192R1_ENABLED
820 #define MBEDTLS_ECP_DP_SECP224R1_ENABLED
821 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
822 #define MBEDTLS_ECP_DP_SECP384R1_ENABLED
823 #define MBEDTLS_ECP_DP_SECP521R1_ENABLED
824 #define MBEDTLS_ECP_DP_SECP192K1_ENABLED
825 #define MBEDTLS_ECP_DP_SECP224K1_ENABLED
826 #define MBEDTLS_ECP_DP_SECP256K1_ENABLED
827 #define MBEDTLS_ECP_DP_BP256R1_ENABLED
828 #define MBEDTLS_ECP_DP_BP384R1_ENABLED
829 #define MBEDTLS_ECP_DP_BP512R1_ENABLED
830 #define MBEDTLS_ECP_DP_CURVE25519_ENABLED
831 #define MBEDTLS_ECP_DP_CURVE448_ENABLED
832 
833 /**
834  * \def MBEDTLS_ECP_NIST_OPTIM
835  *
836  * Enable specific 'modulo p' routines for each NIST prime.
837  * Depending on the prime and architecture, makes operations 4 to 8 times
838  * faster on the corresponding curve.
839  *
840  * Comment this macro to disable NIST curves optimisation.
841  */
842 #define MBEDTLS_ECP_NIST_OPTIM
843 
844 /**
845  * \def MBEDTLS_ECP_NO_INTERNAL_RNG
846  *
847  * When this option is disabled, mbedtls_ecp_mul() will make use of an
848  * internal RNG when called with a NULL \c f_rng argument, in order to protect
849  * against some side-channel attacks.
850  *
851  * This protection introduces a dependency of the ECP module on one of the
852  * DRBG or SHA modules (HMAC-DRBG, CTR-DRBG, SHA-512 or SHA-256.) For very
853  * constrained applications that don't require this protection (for example,
854  * because you're only doing signature verification, so not manipulating any
855  * secret, or because local/physical side-channel attacks are outside your
856  * threat model), it might be desirable to get rid of that dependency.
857  *
858  * \warning Enabling this option makes some uses of ECP vulnerable to some
859  * side-channel attacks. Only enable it if you know that's not a problem for
860  * your use case.
861  *
862  * Uncomment this macro to disable some counter-measures in ECP.
863  */
864 //#define MBEDTLS_ECP_NO_INTERNAL_RNG
865 
866 /**
867  * \def MBEDTLS_ECP_RESTARTABLE
868  *
869  * Enable "non-blocking" ECC operations that can return early and be resumed.
870  *
871  * This allows various functions to pause by returning
872  * #MBEDTLS_ERR_ECP_IN_PROGRESS (or, for functions in the SSL module,
873  * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) and then be called later again in
874  * order to further progress and eventually complete their operation. This is
875  * controlled through mbedtls_ecp_set_max_ops() which limits the maximum
876  * number of ECC operations a function may perform before pausing; see
877  * mbedtls_ecp_set_max_ops() for more information.
878  *
879  * This is useful in non-threaded environments if you want to avoid blocking
880  * for too long on ECC (and, hence, X.509 or SSL/TLS) operations.
881  *
882  * Uncomment this macro to enable restartable ECC computations.
883  *
884  * \note  This option only works with the default software implementation of
885  *        elliptic curve functionality. It is incompatible with
886  *        MBEDTLS_ECP_ALT, MBEDTLS_ECDH_XXX_ALT and MBEDTLS_ECDSA_XXX_ALT.
887  */
888 //#define MBEDTLS_ECP_RESTARTABLE
889 
890 /**
891  * \def MBEDTLS_ECDSA_DETERMINISTIC
892  *
893  * Enable deterministic ECDSA (RFC 6979).
894  * Standard ECDSA is "fragile" in the sense that lack of entropy when signing
895  * may result in a compromise of the long-term signing key. This is avoided by
896  * the deterministic variant.
897  *
898  * Requires: MBEDTLS_HMAC_DRBG_C
899  *
900  * Comment this macro to disable deterministic ECDSA.
901  */
902 #define MBEDTLS_ECDSA_DETERMINISTIC
903 
904 /**
905  * \def MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
906  *
907  * Enable the PSK based ciphersuite modes in SSL / TLS.
908  *
909  * This enables the following ciphersuites (if other requisites are
910  * enabled as well):
911  *      MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384
912  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384
913  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA
914  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384
915  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384
916  *      MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256
917  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256
918  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA
919  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256
920  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256
921  *      MBEDTLS_TLS_PSK_WITH_3DES_EDE_CBC_SHA
922  *      MBEDTLS_TLS_PSK_WITH_RC4_128_SHA
923  */
924 #define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
925 
926 /**
927  * \def MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
928  *
929  * Enable the DHE-PSK based ciphersuite modes in SSL / TLS.
930  *
931  * Requires: MBEDTLS_DHM_C
932  *
933  * This enables the following ciphersuites (if other requisites are
934  * enabled as well):
935  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
936  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
937  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA
938  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384
939  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
940  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
941  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
942  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA
943  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256
944  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
945  *      MBEDTLS_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA
946  *      MBEDTLS_TLS_DHE_PSK_WITH_RC4_128_SHA
947  *
948  * \warning    Using DHE constitutes a security risk as it
949  *             is not possible to validate custom DH parameters.
950  *             If possible, it is recommended users should consider
951  *             preferring other methods of key exchange.
952  *             See dhm.h for more details.
953  *
954  */
955 #define MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
956 
957 /**
958  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
959  *
960  * Enable the ECDHE-PSK based ciphersuite modes in SSL / TLS.
961  *
962  * Requires: MBEDTLS_ECDH_C
963  *
964  * This enables the following ciphersuites (if other requisites are
965  * enabled as well):
966  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384
967  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA
968  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
969  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256
970  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA
971  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
972  *      MBEDTLS_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA
973  *      MBEDTLS_TLS_ECDHE_PSK_WITH_RC4_128_SHA
974  */
975 #define MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
976 
977 /**
978  * \def MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
979  *
980  * Enable the RSA-PSK based ciphersuite modes in SSL / TLS.
981  *
982  * Requires: MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
983  *           MBEDTLS_X509_CRT_PARSE_C
984  *
985  * This enables the following ciphersuites (if other requisites are
986  * enabled as well):
987  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384
988  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384
989  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA
990  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384
991  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384
992  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256
993  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256
994  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA
995  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256
996  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256
997  *      MBEDTLS_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA
998  *      MBEDTLS_TLS_RSA_PSK_WITH_RC4_128_SHA
999  */
1000 #define MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
1001 
1002 /**
1003  * \def MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
1004  *
1005  * Enable the RSA-only based ciphersuite modes in SSL / TLS.
1006  *
1007  * Requires: MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
1008  *           MBEDTLS_X509_CRT_PARSE_C
1009  *
1010  * This enables the following ciphersuites (if other requisites are
1011  * enabled as well):
1012  *      MBEDTLS_TLS_RSA_WITH_AES_256_GCM_SHA384
1013  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA256
1014  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA
1015  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384
1016  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
1017  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
1018  *      MBEDTLS_TLS_RSA_WITH_AES_128_GCM_SHA256
1019  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA256
1020  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA
1021  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256
1022  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
1023  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
1024  *      MBEDTLS_TLS_RSA_WITH_3DES_EDE_CBC_SHA
1025  *      MBEDTLS_TLS_RSA_WITH_RC4_128_SHA
1026  *      MBEDTLS_TLS_RSA_WITH_RC4_128_MD5
1027  */
1028 #define MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
1029 
1030 /**
1031  * \def MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
1032  *
1033  * Enable the DHE-RSA based ciphersuite modes in SSL / TLS.
1034  *
1035  * Requires: MBEDTLS_DHM_C, MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
1036  *           MBEDTLS_X509_CRT_PARSE_C
1037  *
1038  * This enables the following ciphersuites (if other requisites are
1039  * enabled as well):
1040  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
1041  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
1042  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
1043  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
1044  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
1045  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
1046  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
1047  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
1048  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
1049  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
1050  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
1051  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
1052  *      MBEDTLS_TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
1053  *
1054  * \warning    Using DHE constitutes a security risk as it
1055  *             is not possible to validate custom DH parameters.
1056  *             If possible, it is recommended users should consider
1057  *             preferring other methods of key exchange.
1058  *             See dhm.h for more details.
1059  *
1060  */
1061 #define MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
1062 
1063 /**
1064  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
1065  *
1066  * Enable the ECDHE-RSA based ciphersuite modes in SSL / TLS.
1067  *
1068  * Requires: MBEDTLS_ECDH_C, MBEDTLS_RSA_C, MBEDTLS_PKCS1_V15,
1069  *           MBEDTLS_X509_CRT_PARSE_C
1070  *
1071  * This enables the following ciphersuites (if other requisites are
1072  * enabled as well):
1073  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
1074  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
1075  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
1076  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
1077  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
1078  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
1079  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
1080  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
1081  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
1082  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
1083  *      MBEDTLS_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
1084  *      MBEDTLS_TLS_ECDHE_RSA_WITH_RC4_128_SHA
1085  */
1086 #define MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
1087 
1088 /**
1089  * \def MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
1090  *
1091  * Enable the ECDHE-ECDSA based ciphersuite modes in SSL / TLS.
1092  *
1093  * Requires: MBEDTLS_ECDH_C, MBEDTLS_ECDSA_C, MBEDTLS_X509_CRT_PARSE_C,
1094  *
1095  * This enables the following ciphersuites (if other requisites are
1096  * enabled as well):
1097  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
1098  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
1099  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
1100  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
1101  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
1102  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
1103  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
1104  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
1105  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
1106  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
1107  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
1108  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
1109  */
1110 #define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
1111 
1112 /**
1113  * \def MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
1114  *
1115  * Enable the ECDH-ECDSA based ciphersuite modes in SSL / TLS.
1116  *
1117  * Requires: MBEDTLS_ECDH_C, MBEDTLS_X509_CRT_PARSE_C
1118  *
1119  * This enables the following ciphersuites (if other requisites are
1120  * enabled as well):
1121  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_RC4_128_SHA
1122  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
1123  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
1124  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
1125  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
1126  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
1127  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
1128  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
1129  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
1130  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
1131  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
1132  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
1133  */
1134 #define MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
1135 
1136 /**
1137  * \def MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
1138  *
1139  * Enable the ECDH-RSA based ciphersuite modes in SSL / TLS.
1140  *
1141  * Requires: MBEDTLS_ECDH_C, MBEDTLS_X509_CRT_PARSE_C
1142  *
1143  * This enables the following ciphersuites (if other requisites are
1144  * enabled as well):
1145  *      MBEDTLS_TLS_ECDH_RSA_WITH_RC4_128_SHA
1146  *      MBEDTLS_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
1147  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
1148  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
1149  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
1150  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
1151  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
1152  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
1153  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256
1154  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384
1155  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256
1156  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384
1157  */
1158 #define MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
1159 
1160 /**
1161  * \def MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
1162  *
1163  * Enable the ECJPAKE based ciphersuite modes in SSL / TLS.
1164  *
1165  * \warning This is currently experimental. EC J-PAKE support is based on the
1166  * Thread v1.0.0 specification; incompatible changes to the specification
1167  * might still happen. For this reason, this is disabled by default.
1168  *
1169  * Requires: MBEDTLS_ECJPAKE_C
1170  *           MBEDTLS_SHA256_C
1171  *           MBEDTLS_ECP_DP_SECP256R1_ENABLED
1172  *
1173  * This enables the following ciphersuites (if other requisites are
1174  * enabled as well):
1175  *      MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8
1176  */
1177 //#define MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
1178 
1179 /**
1180  * \def MBEDTLS_PK_PARSE_EC_EXTENDED
1181  *
1182  * Enhance support for reading EC keys using variants of SEC1 not allowed by
1183  * RFC 5915 and RFC 5480.
1184  *
1185  * Currently this means parsing the SpecifiedECDomain choice of EC
1186  * parameters (only known groups are supported, not arbitrary domains, to
1187  * avoid validation issues).
1188  *
1189  * Disable if you only need to support RFC 5915 + 5480 key formats.
1190  */
1191 #define MBEDTLS_PK_PARSE_EC_EXTENDED
1192 
1193 /**
1194  * \def MBEDTLS_ERROR_STRERROR_DUMMY
1195  *
1196  * Enable a dummy error function to make use of mbedtls_strerror() in
1197  * third party libraries easier when MBEDTLS_ERROR_C is disabled
1198  * (no effect when MBEDTLS_ERROR_C is enabled).
1199  *
1200  * You can safely disable this if MBEDTLS_ERROR_C is enabled, or if you're
1201  * not using mbedtls_strerror() or error_strerror() in your application.
1202  *
1203  * Disable if you run into name conflicts and want to really remove the
1204  * mbedtls_strerror()
1205  */
1206 #define MBEDTLS_ERROR_STRERROR_DUMMY
1207 
1208 /**
1209  * \def MBEDTLS_GENPRIME
1210  *
1211  * Enable the prime-number generation code.
1212  *
1213  * Requires: MBEDTLS_BIGNUM_C
1214  */
1215 #define MBEDTLS_GENPRIME
1216 
1217 /**
1218  * \def MBEDTLS_FS_IO
1219  *
1220  * Enable functions that use the filesystem.
1221  */
1222 #define MBEDTLS_FS_IO
1223 
1224 /**
1225  * \def MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
1226  *
1227  * Do not add default entropy sources. These are the platform specific,
1228  * mbedtls_timing_hardclock and HAVEGE based poll functions.
1229  *
1230  * This is useful to have more control over the added entropy sources in an
1231  * application.
1232  *
1233  * Uncomment this macro to prevent loading of default entropy functions.
1234  */
1235 //#define MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
1236 
1237 /**
1238  * \def MBEDTLS_NO_PLATFORM_ENTROPY
1239  *
1240  * Do not use built-in platform entropy functions.
1241  * This is useful if your platform does not support
1242  * standards like the /dev/urandom or Windows CryptoAPI.
1243  *
1244  * Uncomment this macro to disable the built-in platform entropy functions.
1245  */
1246 //#define MBEDTLS_NO_PLATFORM_ENTROPY
1247 
1248 /**
1249  * \def MBEDTLS_ENTROPY_FORCE_SHA256
1250  *
1251  * Force the entropy accumulator to use a SHA-256 accumulator instead of the
1252  * default SHA-512 based one (if both are available).
1253  *
1254  * Requires: MBEDTLS_SHA256_C
1255  *
1256  * On 32-bit systems SHA-256 can be much faster than SHA-512. Use this option
1257  * if you have performance concerns.
1258  *
1259  * This option is only useful if both MBEDTLS_SHA256_C and
1260  * MBEDTLS_SHA512_C are defined. Otherwise the available hash module is used.
1261  */
1262 //#define MBEDTLS_ENTROPY_FORCE_SHA256
1263 
1264 /**
1265  * \def MBEDTLS_ENTROPY_NV_SEED
1266  *
1267  * Enable the non-volatile (NV) seed file-based entropy source.
1268  * (Also enables the NV seed read/write functions in the platform layer)
1269  *
1270  * This is crucial (if not required) on systems that do not have a
1271  * cryptographic entropy source (in hardware or kernel) available.
1272  *
1273  * Requires: MBEDTLS_ENTROPY_C, MBEDTLS_PLATFORM_C
1274  *
1275  * \note The read/write functions that are used by the entropy source are
1276  *       determined in the platform layer, and can be modified at runtime and/or
1277  *       compile-time depending on the flags (MBEDTLS_PLATFORM_NV_SEED_*) used.
1278  *
1279  * \note If you use the default implementation functions that read a seedfile
1280  *       with regular fopen(), please make sure you make a seedfile with the
1281  *       proper name (defined in MBEDTLS_PLATFORM_STD_NV_SEED_FILE) and at
1282  *       least MBEDTLS_ENTROPY_BLOCK_SIZE bytes in size that can be read from
1283  *       and written to or you will get an entropy source error! The default
1284  *       implementation will only use the first MBEDTLS_ENTROPY_BLOCK_SIZE
1285  *       bytes from the file.
1286  *
1287  * \note The entropy collector will write to the seed file before entropy is
1288  *       given to an external source, to update it.
1289  */
1290 //#define MBEDTLS_ENTROPY_NV_SEED
1291 
1292 /**
1293  * \def MBEDTLS_MEMORY_DEBUG
1294  *
1295  * Enable debugging of buffer allocator memory issues. Automatically prints
1296  * (to stderr) all (fatal) messages on memory allocation issues. Enables
1297  * function for 'debug output' of allocated memory.
1298  *
1299  * Requires: MBEDTLS_MEMORY_BUFFER_ALLOC_C
1300  *
1301  * Uncomment this macro to let the buffer allocator print out error messages.
1302  */
1303 //#define MBEDTLS_MEMORY_DEBUG
1304 
1305 /**
1306  * \def MBEDTLS_MEMORY_BACKTRACE
1307  *
1308  * Include backtrace information with each allocated block.
1309  *
1310  * Requires: MBEDTLS_MEMORY_BUFFER_ALLOC_C
1311  *           GLIBC-compatible backtrace() an backtrace_symbols() support
1312  *
1313  * Uncomment this macro to include backtrace information
1314  */
1315 //#define MBEDTLS_MEMORY_BACKTRACE
1316 
1317 /**
1318  * \def MBEDTLS_PK_RSA_ALT_SUPPORT
1319  *
1320  * Support external private RSA keys (eg from a HSM) in the PK layer.
1321  *
1322  * Comment this macro to disable support for external private RSA keys.
1323  */
1324 #define MBEDTLS_PK_RSA_ALT_SUPPORT
1325 
1326 /**
1327  * \def MBEDTLS_PKCS1_V15
1328  *
1329  * Enable support for PKCS#1 v1.5 encoding.
1330  *
1331  * Requires: MBEDTLS_RSA_C
1332  *
1333  * This enables support for PKCS#1 v1.5 operations.
1334  */
1335 #define MBEDTLS_PKCS1_V15
1336 
1337 /**
1338  * \def MBEDTLS_PKCS1_V21
1339  *
1340  * Enable support for PKCS#1 v2.1 encoding.
1341  *
1342  * Requires: MBEDTLS_MD_C, MBEDTLS_RSA_C
1343  *
1344  * This enables support for RSAES-OAEP and RSASSA-PSS operations.
1345  */
1346 #define MBEDTLS_PKCS1_V21
1347 
1348 /**
1349  * \def MBEDTLS_RSA_NO_CRT
1350  *
1351  * Do not use the Chinese Remainder Theorem
1352  * for the RSA private operation.
1353  *
1354  * Uncomment this macro to disable the use of CRT in RSA.
1355  *
1356  */
1357 //#define MBEDTLS_RSA_NO_CRT
1358 
1359 /**
1360  * \def MBEDTLS_SELF_TEST
1361  *
1362  * Enable the checkup functions (*_self_test).
1363  */
1364 #define MBEDTLS_SELF_TEST
1365 
1366 /**
1367  * \def MBEDTLS_SHA256_SMALLER
1368  *
1369  * Enable an implementation of SHA-256 that has lower ROM footprint but also
1370  * lower performance.
1371  *
1372  * The default implementation is meant to be a reasonnable compromise between
1373  * performance and size. This version optimizes more aggressively for size at
1374  * the expense of performance. Eg on Cortex-M4 it reduces the size of
1375  * mbedtls_sha256_process() from ~2KB to ~0.5KB for a performance hit of about
1376  * 30%.
1377  *
1378  * Uncomment to enable the smaller implementation of SHA256.
1379  */
1380 //#define MBEDTLS_SHA256_SMALLER
1381 
1382 /**
1383  * \def MBEDTLS_SSL_ALL_ALERT_MESSAGES
1384  *
1385  * Enable sending of alert messages in case of encountered errors as per RFC.
1386  * If you choose not to send the alert messages, mbed TLS can still communicate
1387  * with other servers, only debugging of failures is harder.
1388  *
1389  * The advantage of not sending alert messages, is that no information is given
1390  * about reasons for failures thus preventing adversaries of gaining intel.
1391  *
1392  * Enable sending of all alert messages
1393  */
1394 #define MBEDTLS_SSL_ALL_ALERT_MESSAGES
1395 
1396 /**
1397  * \def MBEDTLS_SSL_ASYNC_PRIVATE
1398  *
1399  * Enable asynchronous external private key operations in SSL. This allows
1400  * you to configure an SSL connection to call an external cryptographic
1401  * module to perform private key operations instead of performing the
1402  * operation inside the library.
1403  *
1404  */
1405 //#define MBEDTLS_SSL_ASYNC_PRIVATE
1406 
1407 /**
1408  * \def MBEDTLS_SSL_DEBUG_ALL
1409  *
1410  * Enable the debug messages in SSL module for all issues.
1411  * Debug messages have been disabled in some places to prevent timing
1412  * attacks due to (unbalanced) debugging function calls.
1413  *
1414  * If you need all error reporting you should enable this during debugging,
1415  * but remove this for production servers that should log as well.
1416  *
1417  * Uncomment this macro to report all debug messages on errors introducing
1418  * a timing side-channel.
1419  *
1420  */
1421 //#define MBEDTLS_SSL_DEBUG_ALL
1422 
1423 /** \def MBEDTLS_SSL_ENCRYPT_THEN_MAC
1424  *
1425  * Enable support for Encrypt-then-MAC, RFC 7366.
1426  *
1427  * This allows peers that both support it to use a more robust protection for
1428  * ciphersuites using CBC, providing deep resistance against timing attacks
1429  * on the padding or underlying cipher.
1430  *
1431  * This only affects CBC ciphersuites, and is useless if none is defined.
1432  *
1433  * Requires: MBEDTLS_SSL_PROTO_TLS1    or
1434  *           MBEDTLS_SSL_PROTO_TLS1_1  or
1435  *           MBEDTLS_SSL_PROTO_TLS1_2
1436  *
1437  * Comment this macro to disable support for Encrypt-then-MAC
1438  */
1439 #define MBEDTLS_SSL_ENCRYPT_THEN_MAC
1440 
1441 /** \def MBEDTLS_SSL_EXTENDED_MASTER_SECRET
1442  *
1443  * Enable support for Extended Master Secret, aka Session Hash
1444  * (draft-ietf-tls-session-hash-02).
1445  *
1446  * This was introduced as "the proper fix" to the Triple Handshake familiy of
1447  * attacks, but it is recommended to always use it (even if you disable
1448  * renegotiation), since it actually fixes a more fundamental issue in the
1449  * original SSL/TLS design, and has implications beyond Triple Handshake.
1450  *
1451  * Requires: MBEDTLS_SSL_PROTO_TLS1    or
1452  *           MBEDTLS_SSL_PROTO_TLS1_1  or
1453  *           MBEDTLS_SSL_PROTO_TLS1_2
1454  *
1455  * Comment this macro to disable support for Extended Master Secret.
1456  */
1457 #define MBEDTLS_SSL_EXTENDED_MASTER_SECRET
1458 
1459 /**
1460  * \def MBEDTLS_SSL_FALLBACK_SCSV
1461  *
1462  * Enable support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv-00).
1463  *
1464  * For servers, it is recommended to always enable this, unless you support
1465  * only one version of TLS, or know for sure that none of your clients
1466  * implements a fallback strategy.
1467  *
1468  * For clients, you only need this if you're using a fallback strategy, which
1469  * is not recommended in the first place, unless you absolutely need it to
1470  * interoperate with buggy (version-intolerant) servers.
1471  *
1472  * Comment this macro to disable support for FALLBACK_SCSV
1473  */
1474 #define MBEDTLS_SSL_FALLBACK_SCSV
1475 
1476 /**
1477  * \def MBEDTLS_SSL_HW_RECORD_ACCEL
1478  *
1479  * Enable hooking functions in SSL module for hardware acceleration of
1480  * individual records.
1481  *
1482  * Uncomment this macro to enable hooking functions.
1483  */
1484 //#define MBEDTLS_SSL_HW_RECORD_ACCEL
1485 
1486 /**
1487  * \def MBEDTLS_SSL_CBC_RECORD_SPLITTING
1488  *
1489  * Enable 1/n-1 record splitting for CBC mode in SSLv3 and TLS 1.0.
1490  *
1491  * This is a countermeasure to the BEAST attack, which also minimizes the risk
1492  * of interoperability issues compared to sending 0-length records.
1493  *
1494  * Comment this macro to disable 1/n-1 record splitting.
1495  */
1496 #define MBEDTLS_SSL_CBC_RECORD_SPLITTING
1497 
1498 /**
1499  * \def MBEDTLS_SSL_RENEGOTIATION
1500  *
1501  * Enable support for TLS renegotiation.
1502  *
1503  * The two main uses of renegotiation are (1) refresh keys on long-lived
1504  * connections and (2) client authentication after the initial handshake.
1505  * If you don't need renegotiation, it's probably better to disable it, since
1506  * it has been associated with security issues in the past and is easy to
1507  * misuse/misunderstand.
1508  *
1509  * Comment this to disable support for renegotiation.
1510  *
1511  * \note   Even if this option is disabled, both client and server are aware
1512  *         of the Renegotiation Indication Extension (RFC 5746) used to
1513  *         prevent the SSL renegotiation attack (see RFC 5746 Sect. 1).
1514  *         (See \c mbedtls_ssl_conf_legacy_renegotiation for the
1515  *          configuration of this extension).
1516  *
1517  */
1518 #define MBEDTLS_SSL_RENEGOTIATION
1519 
1520 /**
1521  * \def MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO
1522  *
1523  * Enable support for receiving and parsing SSLv2 Client Hello messages for the
1524  * SSL Server module (MBEDTLS_SSL_SRV_C).
1525  *
1526  * Uncomment this macro to enable support for SSLv2 Client Hello messages.
1527  */
1528 //#define MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO
1529 
1530 /**
1531  * \def MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE
1532  *
1533  * Pick the ciphersuite according to the client's preferences rather than ours
1534  * in the SSL Server module (MBEDTLS_SSL_SRV_C).
1535  *
1536  * Uncomment this macro to respect client's ciphersuite order
1537  */
1538 //#define MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE
1539 
1540 /**
1541  * \def MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1542  *
1543  * Enable support for RFC 6066 max_fragment_length extension in SSL.
1544  *
1545  * Comment this macro to disable support for the max_fragment_length extension
1546  */
1547 #define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
1548 
1549 /**
1550  * \def MBEDTLS_SSL_PROTO_SSL3
1551  *
1552  * Enable support for SSL 3.0.
1553  *
1554  * Requires: MBEDTLS_MD5_C
1555  *           MBEDTLS_SHA1_C
1556  *
1557  * Comment this macro to disable support for SSL 3.0
1558  */
1559 //#define MBEDTLS_SSL_PROTO_SSL3
1560 
1561 /**
1562  * \def MBEDTLS_SSL_PROTO_TLS1
1563  *
1564  * Enable support for TLS 1.0.
1565  *
1566  * Requires: MBEDTLS_MD5_C
1567  *           MBEDTLS_SHA1_C
1568  *
1569  * Comment this macro to disable support for TLS 1.0
1570  */
1571 #define MBEDTLS_SSL_PROTO_TLS1
1572 
1573 /**
1574  * \def MBEDTLS_SSL_PROTO_TLS1_1
1575  *
1576  * Enable support for TLS 1.1 (and DTLS 1.0 if DTLS is enabled).
1577  *
1578  * Requires: MBEDTLS_MD5_C
1579  *           MBEDTLS_SHA1_C
1580  *
1581  * Comment this macro to disable support for TLS 1.1 / DTLS 1.0
1582  */
1583 #define MBEDTLS_SSL_PROTO_TLS1_1
1584 
1585 /**
1586  * \def MBEDTLS_SSL_PROTO_TLS1_2
1587  *
1588  * Enable support for TLS 1.2 (and DTLS 1.2 if DTLS is enabled).
1589  *
1590  * Requires: MBEDTLS_SHA1_C or MBEDTLS_SHA256_C or MBEDTLS_SHA512_C
1591  *           (Depends on ciphersuites)
1592  *
1593  * Comment this macro to disable support for TLS 1.2 / DTLS 1.2
1594  */
1595 #define MBEDTLS_SSL_PROTO_TLS1_2
1596 
1597 /**
1598  * \def MBEDTLS_SSL_PROTO_DTLS
1599  *
1600  * Enable support for DTLS (all available versions).
1601  *
1602  * Enable this and MBEDTLS_SSL_PROTO_TLS1_1 to enable DTLS 1.0,
1603  * and/or this and MBEDTLS_SSL_PROTO_TLS1_2 to enable DTLS 1.2.
1604  *
1605  * Requires: MBEDTLS_SSL_PROTO_TLS1_1
1606  *        or MBEDTLS_SSL_PROTO_TLS1_2
1607  *
1608  * Comment this macro to disable support for DTLS
1609  */
1610 #define MBEDTLS_SSL_PROTO_DTLS
1611 
1612 /**
1613  * \def MBEDTLS_SSL_ALPN
1614  *
1615  * Enable support for RFC 7301 Application Layer Protocol Negotiation.
1616  *
1617  * Comment this macro to disable support for ALPN.
1618  */
1619 #define MBEDTLS_SSL_ALPN
1620 
1621 /**
1622  * \def MBEDTLS_SSL_DTLS_ANTI_REPLAY
1623  *
1624  * Enable support for the anti-replay mechanism in DTLS.
1625  *
1626  * Requires: MBEDTLS_SSL_TLS_C
1627  *           MBEDTLS_SSL_PROTO_DTLS
1628  *
1629  * \warning Disabling this is often a security risk!
1630  * See mbedtls_ssl_conf_dtls_anti_replay() for details.
1631  *
1632  * Comment this to disable anti-replay in DTLS.
1633  */
1634 #define MBEDTLS_SSL_DTLS_ANTI_REPLAY
1635 
1636 /**
1637  * \def MBEDTLS_SSL_DTLS_HELLO_VERIFY
1638  *
1639  * Enable support for HelloVerifyRequest on DTLS servers.
1640  *
1641  * This feature is highly recommended to prevent DTLS servers being used as
1642  * amplifiers in DoS attacks against other hosts. It should always be enabled
1643  * unless you know for sure amplification cannot be a problem in the
1644  * environment in which your server operates.
1645  *
1646  * \warning Disabling this can ba a security risk! (see above)
1647  *
1648  * Requires: MBEDTLS_SSL_PROTO_DTLS
1649  *
1650  * Comment this to disable support for HelloVerifyRequest.
1651  */
1652 #define MBEDTLS_SSL_DTLS_HELLO_VERIFY
1653 
1654 /**
1655  * \def MBEDTLS_SSL_DTLS_SRTP
1656  *
1657  * Enable support for DTLS-SRTP, RFC5764
1658  *
1659  * Requires: MBEDTLS_SSL_PROTO_DTLS
1660  *
1661  * Comment this to disable support for DTLS-SRTP.
1662  */
1663 #define MBEDTLS_SSL_DTLS_SRTP
1664 
1665 /**
1666  * \def MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
1667  *
1668  * Enable server-side support for clients that reconnect from the same port.
1669  *
1670  * Some clients unexpectedly close the connection and try to reconnect using the
1671  * same source port. This needs special support from the server to handle the
1672  * new connection securely, as described in section 4.2.8 of RFC 6347. This
1673  * flag enables that support.
1674  *
1675  * Requires: MBEDTLS_SSL_DTLS_HELLO_VERIFY
1676  *
1677  * Comment this to disable support for clients reusing the source port.
1678  */
1679 #define MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
1680 
1681 /**
1682  * \def MBEDTLS_SSL_DTLS_BADMAC_LIMIT
1683  *
1684  * Enable support for a limit of records with bad MAC.
1685  *
1686  * See mbedtls_ssl_conf_dtls_badmac_limit().
1687  *
1688  * Requires: MBEDTLS_SSL_PROTO_DTLS
1689  */
1690 #define MBEDTLS_SSL_DTLS_BADMAC_LIMIT
1691 
1692 /**
1693  * \def MBEDTLS_SSL_SESSION_TICKETS
1694  *
1695  * Enable support for RFC 5077 session tickets in SSL.
1696  * Client-side, provides full support for session tickets (maintenance of a
1697  * session store remains the responsibility of the application, though).
1698  * Server-side, you also need to provide callbacks for writing and parsing
1699  * tickets, including authenticated encryption and key management. Example
1700  * callbacks are provided by MBEDTLS_SSL_TICKET_C.
1701  *
1702  * Comment this macro to disable support for SSL session tickets
1703  */
1704 #define MBEDTLS_SSL_SESSION_TICKETS
1705 
1706 /**
1707  * \def MBEDTLS_SSL_EXPORT_KEYS
1708  *
1709  * Enable support for exporting key block and master secret.
1710  * This is required for certain users of TLS, e.g. EAP-TLS.
1711  *
1712  * Comment this macro to disable support for key export
1713  */
1714 #define MBEDTLS_SSL_EXPORT_KEYS
1715 
1716 /**
1717  * \def MBEDTLS_SSL_SERVER_NAME_INDICATION
1718  *
1719  * Enable support for RFC 6066 server name indication (SNI) in SSL.
1720  *
1721  * Requires: MBEDTLS_X509_CRT_PARSE_C
1722  *
1723  * Comment this macro to disable support for server name indication in SSL
1724  */
1725 #define MBEDTLS_SSL_SERVER_NAME_INDICATION
1726 
1727 /**
1728  * \def MBEDTLS_SSL_TRUNCATED_HMAC
1729  *
1730  * Enable support for RFC 6066 truncated HMAC in SSL.
1731  *
1732  * Comment this macro to disable support for truncated HMAC in SSL
1733  */
1734 #define MBEDTLS_SSL_TRUNCATED_HMAC
1735 
1736 /**
1737  * \def MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT
1738  *
1739  * Fallback to old (pre-2.7), non-conforming implementation of the truncated
1740  * HMAC extension which also truncates the HMAC key. Note that this option is
1741  * only meant for a transitory upgrade period and is likely to be removed in
1742  * a future version of the library.
1743  *
1744  * \warning The old implementation is non-compliant and has a security weakness
1745  *          (2^80 brute force attack on the HMAC key used for a single,
1746  *          uninterrupted connection). This should only be enabled temporarily
1747  *          when (1) the use of truncated HMAC is essential in order to save
1748  *          bandwidth, and (2) the peer is an Mbed TLS stack that doesn't use
1749  *          the fixed implementation yet (pre-2.7).
1750  *
1751  * \deprecated This option is deprecated and will likely be removed in a
1752  *             future version of Mbed TLS.
1753  *
1754  * Uncomment to fallback to old, non-compliant truncated HMAC implementation.
1755  *
1756  * Requires: MBEDTLS_SSL_TRUNCATED_HMAC
1757  */
1758 //#define MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT
1759 
1760 /**
1761  * \def MBEDTLS_TEST_HOOKS
1762  *
1763  * Enable features for invasive testing such as introspection functions and
1764  * hooks for fault injection. This enables additional unit tests.
1765  *
1766  * Merely enabling this feature should not change the behavior of the product.
1767  * It only adds new code, and new branching points where the default behavior
1768  * is the same as when this feature is disabled.
1769  * However, this feature increases the attack surface: there is an added
1770  * risk of vulnerabilities, and more gadgets that can make exploits easier.
1771  * Therefore this feature must never be enabled in production.
1772  *
1773  * Uncomment to enable invasive tests.
1774  */
1775 //#define MBEDTLS_TEST_HOOKS
1776 
1777 /**
1778  * \def MBEDTLS_THREADING_ALT
1779  *
1780  * Provide your own alternate threading implementation.
1781  *
1782  * Requires: MBEDTLS_THREADING_C
1783  *
1784  * Uncomment this to allow your own alternate threading implementation.
1785  */
1786 //#define MBEDTLS_THREADING_ALT
1787 
1788 /**
1789  * \def MBEDTLS_THREADING_PTHREAD
1790  *
1791  * Enable the pthread wrapper layer for the threading layer.
1792  *
1793  * Requires: MBEDTLS_THREADING_C
1794  *
1795  * Uncomment this to enable pthread mutexes.
1796  */
1797 #define MBEDTLS_THREADING_PTHREAD
1798 
1799 /**
1800  * \def MBEDTLS_VERSION_FEATURES
1801  *
1802  * Allow run-time checking of compile-time enabled features. Thus allowing users
1803  * to check at run-time if the library is for instance compiled with threading
1804  * support via mbedtls_version_check_feature().
1805  *
1806  * Requires: MBEDTLS_VERSION_C
1807  *
1808  * Comment this to disable run-time checking and save ROM space
1809  */
1810 #define MBEDTLS_VERSION_FEATURES
1811 
1812 /**
1813  * \def MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
1814  *
1815  * If set, the X509 parser will not break-off when parsing an X509 certificate
1816  * and encountering an extension in a v1 or v2 certificate.
1817  *
1818  * Uncomment to prevent an error.
1819  */
1820 //#define MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
1821 
1822 /**
1823  * \def MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
1824  *
1825  * If set, the X509 parser will not break-off when parsing an X509 certificate
1826  * and encountering an unknown critical extension.
1827  *
1828  * \warning Depending on your PKI use, enabling this can be a security risk!
1829  *
1830  * Uncomment to prevent an error.
1831  */
1832 //#define MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
1833 
1834 /**
1835  * \def MBEDTLS_X509_CHECK_KEY_USAGE
1836  *
1837  * Enable verification of the keyUsage extension (CA and leaf certificates).
1838  *
1839  * Disabling this avoids problems with mis-issued and/or misused
1840  * (intermediate) CA and leaf certificates.
1841  *
1842  * \warning Depending on your PKI use, disabling this can be a security risk!
1843  *
1844  * Comment to skip keyUsage checking for both CA and leaf certificates.
1845  */
1846 #define MBEDTLS_X509_CHECK_KEY_USAGE
1847 
1848 /**
1849  * \def MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
1850  *
1851  * Enable verification of the extendedKeyUsage extension (leaf certificates).
1852  *
1853  * Disabling this avoids problems with mis-issued and/or misused certificates.
1854  *
1855  * \warning Depending on your PKI use, disabling this can be a security risk!
1856  *
1857  * Comment to skip extendedKeyUsage checking for certificates.
1858  */
1859 #define MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
1860 
1861 /**
1862  * \def MBEDTLS_X509_RSASSA_PSS_SUPPORT
1863  *
1864  * Enable parsing and verification of X.509 certificates, CRLs and CSRS
1865  * signed with RSASSA-PSS (aka PKCS#1 v2.1).
1866  *
1867  * Comment this macro to disallow using RSASSA-PSS in certificates.
1868  */
1869 #define MBEDTLS_X509_RSASSA_PSS_SUPPORT
1870 
1871 /**
1872  * \def MBEDTLS_ZLIB_SUPPORT
1873  *
1874  * If set, the SSL/TLS module uses ZLIB to support compression and
1875  * decompression of packet data.
1876  *
1877  * \warning TLS-level compression MAY REDUCE SECURITY! See for example the
1878  * CRIME attack. Before enabling this option, you should examine with care if
1879  * CRIME or similar exploits may be applicable to your use case.
1880  *
1881  * \note Currently compression can't be used with DTLS.
1882  *
1883  * \deprecated This feature is deprecated and will be removed
1884  *             in the next major revision of the library.
1885  *
1886  * Used in: library/ssl_tls.c
1887  *          library/ssl_cli.c
1888  *          library/ssl_srv.c
1889  *
1890  * This feature requires zlib library and headers to be present.
1891  *
1892  * Uncomment to enable use of ZLIB
1893  */
1894 //#define MBEDTLS_ZLIB_SUPPORT
1895 /* \} name SECTION: mbed TLS feature support */
1896 
1897 /**
1898  * \name SECTION: mbed TLS modules
1899  *
1900  * This section enables or disables entire modules in mbed TLS
1901  * \{
1902  */
1903 
1904 /**
1905  * \def MBEDTLS_AESNI_C
1906  *
1907  * Enable AES-NI support on x86-64.
1908  *
1909  * Module:  library/aesni.c
1910  * Caller:  library/aes.c
1911  *
1912  * Requires: MBEDTLS_HAVE_ASM
1913  *
1914  * This modules adds support for the AES-NI instructions on x86-64
1915  */
1916 #define MBEDTLS_AESNI_C
1917 
1918 /**
1919  * \def MBEDTLS_AES_C
1920  *
1921  * Enable the AES block cipher.
1922  *
1923  * Module:  library/aes.c
1924  * Caller:  library/cipher.c
1925  *          library/pem.c
1926  *          library/ctr_drbg.c
1927  *
1928  * This module enables the following ciphersuites (if other requisites are
1929  * enabled as well):
1930  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
1931  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
1932  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
1933  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
1934  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
1935  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
1936  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
1937  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
1938  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
1939  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
1940  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
1941  *      MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
1942  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
1943  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
1944  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
1945  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
1946  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
1947  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
1948  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
1949  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
1950  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
1951  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
1952  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
1953  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
1954  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
1955  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
1956  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
1957  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
1958  *      MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
1959  *      MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
1960  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
1961  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384
1962  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
1963  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA
1964  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CBC_SHA
1965  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
1966  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256
1967  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
1968  *      MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA
1969  *      MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA
1970  *      MBEDTLS_TLS_RSA_WITH_AES_256_GCM_SHA384
1971  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA256
1972  *      MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA
1973  *      MBEDTLS_TLS_RSA_WITH_AES_128_GCM_SHA256
1974  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA256
1975  *      MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA
1976  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384
1977  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384
1978  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA
1979  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256
1980  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256
1981  *      MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA
1982  *      MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384
1983  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384
1984  *      MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA
1985  *      MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256
1986  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256
1987  *      MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA
1988  *
1989  * PEM_PARSE uses AES for decrypting encrypted keys.
1990  */
1991 #define MBEDTLS_AES_C
1992 
1993 /**
1994  * \def MBEDTLS_ARC4_C
1995  *
1996  * Enable the ARCFOUR stream cipher.
1997  *
1998  * Module:  library/arc4.c
1999  * Caller:  library/cipher.c
2000  *
2001  * This module enables the following ciphersuites (if other requisites are
2002  * enabled as well):
2003  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_RC4_128_SHA
2004  *      MBEDTLS_TLS_ECDH_RSA_WITH_RC4_128_SHA
2005  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
2006  *      MBEDTLS_TLS_ECDHE_RSA_WITH_RC4_128_SHA
2007  *      MBEDTLS_TLS_ECDHE_PSK_WITH_RC4_128_SHA
2008  *      MBEDTLS_TLS_DHE_PSK_WITH_RC4_128_SHA
2009  *      MBEDTLS_TLS_RSA_WITH_RC4_128_SHA
2010  *      MBEDTLS_TLS_RSA_WITH_RC4_128_MD5
2011  *      MBEDTLS_TLS_RSA_PSK_WITH_RC4_128_SHA
2012  *      MBEDTLS_TLS_PSK_WITH_RC4_128_SHA
2013  *
2014  * \warning   ARC4 is considered a weak cipher and its use constitutes a
2015  *            security risk. If possible, we recommend avoidng dependencies on
2016  *            it, and considering stronger ciphers instead.
2017  *
2018  */
2019 #define MBEDTLS_ARC4_C
2020 
2021 /**
2022  * \def MBEDTLS_ASN1_PARSE_C
2023  *
2024  * Enable the generic ASN1 parser.
2025  *
2026  * Module:  library/asn1.c
2027  * Caller:  library/x509.c
2028  *          library/dhm.c
2029  *          library/pkcs12.c
2030  *          library/pkcs5.c
2031  *          library/pkparse.c
2032  */
2033 #define MBEDTLS_ASN1_PARSE_C
2034 
2035 /**
2036  * \def MBEDTLS_ASN1_WRITE_C
2037  *
2038  * Enable the generic ASN1 writer.
2039  *
2040  * Module:  library/asn1write.c
2041  * Caller:  library/ecdsa.c
2042  *          library/pkwrite.c
2043  *          library/x509_create.c
2044  *          library/x509write_crt.c
2045  *          library/x509write_csr.c
2046  */
2047 #define MBEDTLS_ASN1_WRITE_C
2048 
2049 /**
2050  * \def MBEDTLS_BASE64_C
2051  *
2052  * Enable the Base64 module.
2053  *
2054  * Module:  library/base64.c
2055  * Caller:  library/pem.c
2056  *
2057  * This module is required for PEM support (required by X.509).
2058  */
2059 #define MBEDTLS_BASE64_C
2060 
2061 /**
2062  * \def MBEDTLS_BIGNUM_C
2063  *
2064  * Enable the multi-precision integer library.
2065  *
2066  * Module:  library/bignum.c
2067  * Caller:  library/dhm.c
2068  *          library/ecp.c
2069  *          library/ecdsa.c
2070  *          library/rsa.c
2071  *          library/rsa_internal.c
2072  *          library/ssl_tls.c
2073  *
2074  * This module is required for RSA, DHM and ECC (ECDH, ECDSA) support.
2075  */
2076 #define MBEDTLS_BIGNUM_C
2077 
2078 /**
2079  * \def MBEDTLS_BLOWFISH_C
2080  *
2081  * Enable the Blowfish block cipher.
2082  *
2083  * Module:  library/blowfish.c
2084  */
2085 #define MBEDTLS_BLOWFISH_C
2086 
2087 /**
2088  * \def MBEDTLS_CAMELLIA_C
2089  *
2090  * Enable the Camellia block cipher.
2091  *
2092  * Module:  library/camellia.c
2093  * Caller:  library/cipher.c
2094  *
2095  * This module enables the following ciphersuites (if other requisites are
2096  * enabled as well):
2097  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
2098  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
2099  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256
2100  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384
2101  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
2102  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
2103  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256
2104  *      MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384
2105  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384
2106  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
2107  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384
2108  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
2109  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
2110  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
2111  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
2112  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256
2113  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
2114  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256
2115  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
2116  *      MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
2117  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
2118  *      MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
2119  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384
2120  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
2121  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384
2122  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256
2123  *      MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
2124  *      MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256
2125  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384
2126  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
2127  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
2128  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256
2129  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
2130  *      MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
2131  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384
2132  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384
2133  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256
2134  *      MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256
2135  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384
2136  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384
2137  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256
2138  *      MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256
2139  */
2140 #define MBEDTLS_CAMELLIA_C
2141 
2142 /**
2143  * \def MBEDTLS_ARIA_C
2144  *
2145  * Enable the ARIA block cipher.
2146  *
2147  * Module:  library/aria.c
2148  * Caller:  library/cipher.c
2149  *
2150  * This module enables the following ciphersuites (if other requisites are
2151  * enabled as well):
2152  *
2153  *      MBEDTLS_TLS_RSA_WITH_ARIA_128_CBC_SHA256
2154  *      MBEDTLS_TLS_RSA_WITH_ARIA_256_CBC_SHA384
2155  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256
2156  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384
2157  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256
2158  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384
2159  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_CBC_SHA256
2160  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_CBC_SHA384
2161  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256
2162  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384
2163  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_CBC_SHA256
2164  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_CBC_SHA384
2165  *      MBEDTLS_TLS_RSA_WITH_ARIA_128_GCM_SHA256
2166  *      MBEDTLS_TLS_RSA_WITH_ARIA_256_GCM_SHA384
2167  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256
2168  *      MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384
2169  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256
2170  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384
2171  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_GCM_SHA256
2172  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_GCM_SHA384
2173  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256
2174  *      MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384
2175  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_GCM_SHA256
2176  *      MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_GCM_SHA384
2177  *      MBEDTLS_TLS_PSK_WITH_ARIA_128_CBC_SHA256
2178  *      MBEDTLS_TLS_PSK_WITH_ARIA_256_CBC_SHA384
2179  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_CBC_SHA256
2180  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_CBC_SHA384
2181  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_CBC_SHA256
2182  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_CBC_SHA384
2183  *      MBEDTLS_TLS_PSK_WITH_ARIA_128_GCM_SHA256
2184  *      MBEDTLS_TLS_PSK_WITH_ARIA_256_GCM_SHA384
2185  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_GCM_SHA256
2186  *      MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_GCM_SHA384
2187  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_GCM_SHA256
2188  *      MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_GCM_SHA384
2189  *      MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256
2190  *      MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384
2191  */
2192 //#define MBEDTLS_ARIA_C
2193 
2194 /**
2195  * \def MBEDTLS_CCM_C
2196  *
2197  * Enable the Counter with CBC-MAC (CCM) mode for 128-bit block cipher.
2198  *
2199  * Module:  library/ccm.c
2200  *
2201  * Requires: MBEDTLS_AES_C or MBEDTLS_CAMELLIA_C
2202  *
2203  * This module enables the AES-CCM ciphersuites, if other requisites are
2204  * enabled as well.
2205  */
2206 #define MBEDTLS_CCM_C
2207 
2208 /**
2209  * \def MBEDTLS_CERTS_C
2210  *
2211  * Enable the test certificates.
2212  *
2213  * Module:  library/certs.c
2214  * Caller:
2215  *
2216  * This module is used for testing (ssl_client/server).
2217  */
2218 #define MBEDTLS_CERTS_C
2219 
2220 /**
2221  * \def MBEDTLS_CHACHA20_C
2222  *
2223  * Enable the ChaCha20 stream cipher.
2224  *
2225  * Module:  library/chacha20.c
2226  */
2227 #define MBEDTLS_CHACHA20_C
2228 
2229 /**
2230  * \def MBEDTLS_CHACHAPOLY_C
2231  *
2232  * Enable the ChaCha20-Poly1305 AEAD algorithm.
2233  *
2234  * Module:  library/chachapoly.c
2235  *
2236  * This module requires: MBEDTLS_CHACHA20_C, MBEDTLS_POLY1305_C
2237  */
2238 #define MBEDTLS_CHACHAPOLY_C
2239 
2240 /**
2241  * \def MBEDTLS_CIPHER_C
2242  *
2243  * Enable the generic cipher layer.
2244  *
2245  * Module:  library/cipher.c
2246  * Caller:  library/ssl_tls.c
2247  *
2248  * Uncomment to enable generic cipher wrappers.
2249  */
2250 #define MBEDTLS_CIPHER_C
2251 
2252 /**
2253  * \def MBEDTLS_CMAC_C
2254  *
2255  * Enable the CMAC (Cipher-based Message Authentication Code) mode for block
2256  * ciphers.
2257  *
2258  * Module:  library/cmac.c
2259  *
2260  * Requires: MBEDTLS_AES_C or MBEDTLS_DES_C
2261  *
2262  */
2263 //#define MBEDTLS_CMAC_C
2264 
2265 /**
2266  * \def MBEDTLS_CTR_DRBG_C
2267  *
2268  * Enable the CTR_DRBG AES-based random generator.
2269  * The CTR_DRBG generator uses AES-256 by default.
2270  * To use AES-128 instead, enable \c MBEDTLS_CTR_DRBG_USE_128_BIT_KEY above.
2271  *
2272  * \note To achieve a 256-bit security strength with CTR_DRBG,
2273  *       you must use AES-256 *and* use sufficient entropy.
2274  *       See ctr_drbg.h for more details.
2275  *
2276  * Module:  library/ctr_drbg.c
2277  * Caller:
2278  *
2279  * Requires: MBEDTLS_AES_C
2280  *
2281  * This module provides the CTR_DRBG AES random number generator.
2282  */
2283 #define MBEDTLS_CTR_DRBG_C
2284 
2285 /**
2286  * \def MBEDTLS_DEBUG_C
2287  *
2288  * Enable the debug functions.
2289  *
2290  * Module:  library/debug.c
2291  * Caller:  library/ssl_cli.c
2292  *          library/ssl_srv.c
2293  *          library/ssl_tls.c
2294  *
2295  * This module provides debugging functions.
2296  */
2297 #define MBEDTLS_DEBUG_C
2298 
2299 /**
2300  * \def MBEDTLS_DES_C
2301  *
2302  * Enable the DES block cipher.
2303  *
2304  * Module:  library/des.c
2305  * Caller:  library/pem.c
2306  *          library/cipher.c
2307  *
2308  * This module enables the following ciphersuites (if other requisites are
2309  * enabled as well):
2310  *      MBEDTLS_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
2311  *      MBEDTLS_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
2312  *      MBEDTLS_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
2313  *      MBEDTLS_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
2314  *      MBEDTLS_TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
2315  *      MBEDTLS_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA
2316  *      MBEDTLS_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA
2317  *      MBEDTLS_TLS_RSA_WITH_3DES_EDE_CBC_SHA
2318  *      MBEDTLS_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA
2319  *      MBEDTLS_TLS_PSK_WITH_3DES_EDE_CBC_SHA
2320  *
2321  * PEM_PARSE uses DES/3DES for decrypting encrypted keys.
2322  *
2323  * \warning   DES is considered a weak cipher and its use constitutes a
2324  *            security risk. We recommend considering stronger ciphers instead.
2325  */
2326 #define MBEDTLS_DES_C
2327 
2328 /**
2329  * \def MBEDTLS_DHM_C
2330  *
2331  * Enable the Diffie-Hellman-Merkle module.
2332  *
2333  * Module:  library/dhm.c
2334  * Caller:  library/ssl_cli.c
2335  *          library/ssl_srv.c
2336  *
2337  * This module is used by the following key exchanges:
2338  *      DHE-RSA, DHE-PSK
2339  *
2340  * \warning    Using DHE constitutes a security risk as it
2341  *             is not possible to validate custom DH parameters.
2342  *             If possible, it is recommended users should consider
2343  *             preferring other methods of key exchange.
2344  *             See dhm.h for more details.
2345  *
2346  */
2347 #define MBEDTLS_DHM_C
2348 
2349 /**
2350  * \def MBEDTLS_ECDH_C
2351  *
2352  * Enable the elliptic curve Diffie-Hellman library.
2353  *
2354  * Module:  library/ecdh.c
2355  * Caller:  library/ssl_cli.c
2356  *          library/ssl_srv.c
2357  *
2358  * This module is used by the following key exchanges:
2359  *      ECDHE-ECDSA, ECDHE-RSA, DHE-PSK
2360  *
2361  * Requires: MBEDTLS_ECP_C
2362  */
2363 #define MBEDTLS_ECDH_C
2364 
2365 /**
2366  * \def MBEDTLS_ECDSA_C
2367  *
2368  * Enable the elliptic curve DSA library.
2369  *
2370  * Module:  library/ecdsa.c
2371  * Caller:
2372  *
2373  * This module is used by the following key exchanges:
2374  *      ECDHE-ECDSA
2375  *
2376  * Requires: MBEDTLS_ECP_C, MBEDTLS_ASN1_WRITE_C, MBEDTLS_ASN1_PARSE_C
2377  */
2378 #define MBEDTLS_ECDSA_C
2379 
2380 /**
2381  * \def MBEDTLS_ECJPAKE_C
2382  *
2383  * Enable the elliptic curve J-PAKE library.
2384  *
2385  * \warning This is currently experimental. EC J-PAKE support is based on the
2386  * Thread v1.0.0 specification; incompatible changes to the specification
2387  * might still happen. For this reason, this is disabled by default.
2388  *
2389  * Module:  library/ecjpake.c
2390  * Caller:
2391  *
2392  * This module is used by the following key exchanges:
2393  *      ECJPAKE
2394  *
2395  * Requires: MBEDTLS_ECP_C, MBEDTLS_MD_C
2396  */
2397 //#define MBEDTLS_ECJPAKE_C
2398 
2399 /**
2400  * \def MBEDTLS_ECP_C
2401  *
2402  * Enable the elliptic curve over GF(p) library.
2403  *
2404  * Module:  library/ecp.c
2405  * Caller:  library/ecdh.c
2406  *          library/ecdsa.c
2407  *          library/ecjpake.c
2408  *
2409  * Requires: MBEDTLS_BIGNUM_C and at least one MBEDTLS_ECP_DP_XXX_ENABLED
2410  */
2411 #define MBEDTLS_ECP_C
2412 
2413 /**
2414  * \def MBEDTLS_ENTROPY_C
2415  *
2416  * Enable the platform-specific entropy code.
2417  *
2418  * Module:  library/entropy.c
2419  * Caller:
2420  *
2421  * Requires: MBEDTLS_SHA512_C or MBEDTLS_SHA256_C
2422  *
2423  * This module provides a generic entropy pool
2424  */
2425 #define MBEDTLS_ENTROPY_C
2426 
2427 /**
2428  * \def MBEDTLS_ERROR_C
2429  *
2430  * Enable error code to error string conversion.
2431  *
2432  * Module:  library/error.c
2433  * Caller:
2434  *
2435  * This module enables mbedtls_strerror().
2436  */
2437 #define MBEDTLS_ERROR_C
2438 
2439 /**
2440  * \def MBEDTLS_GCM_C
2441  *
2442  * Enable the Galois/Counter Mode (GCM) for AES.
2443  *
2444  * Module:  library/gcm.c
2445  *
2446  * Requires: MBEDTLS_AES_C or MBEDTLS_CAMELLIA_C
2447  *
2448  * This module enables the AES-GCM and CAMELLIA-GCM ciphersuites, if other
2449  * requisites are enabled as well.
2450  */
2451 #define MBEDTLS_GCM_C
2452 
2453 /**
2454  * \def MBEDTLS_HAVEGE_C
2455  *
2456  * Enable the HAVEGE random generator.
2457  *
2458  * Warning: the HAVEGE random generator is not suitable for virtualized
2459  *          environments
2460  *
2461  * Warning: the HAVEGE random generator is dependent on timing and specific
2462  *          processor traits. It is therefore not advised to use HAVEGE as
2463  *          your applications primary random generator or primary entropy pool
2464  *          input. As a secondary input to your entropy pool, it IS able add
2465  *          the (limited) extra entropy it provides.
2466  *
2467  * Module:  library/havege.c
2468  * Caller:
2469  *
2470  * Requires: MBEDTLS_TIMING_C
2471  *
2472  * Uncomment to enable the HAVEGE random generator.
2473  */
2474 //#define MBEDTLS_HAVEGE_C
2475 
2476 /**
2477  * \def MBEDTLS_HKDF_C
2478  *
2479  * Enable the HKDF algorithm (RFC 5869).
2480  *
2481  * Module:  library/hkdf.c
2482  * Caller:
2483  *
2484  * Requires: MBEDTLS_MD_C
2485  *
2486  * This module adds support for the Hashed Message Authentication Code
2487  * (HMAC)-based key derivation function (HKDF).
2488  */
2489 #define MBEDTLS_HKDF_C
2490 
2491 /**
2492  * \def MBEDTLS_HMAC_DRBG_C
2493  *
2494  * Enable the HMAC_DRBG random generator.
2495  *
2496  * Module:  library/hmac_drbg.c
2497  * Caller:
2498  *
2499  * Requires: MBEDTLS_MD_C
2500  *
2501  * Uncomment to enable the HMAC_DRBG random number geerator.
2502  */
2503 #define MBEDTLS_HMAC_DRBG_C
2504 
2505 /**
2506  * \def MBEDTLS_NIST_KW_C
2507  *
2508  * Enable the Key Wrapping mode for 128-bit block ciphers,
2509  * as defined in NIST SP 800-38F. Only KW and KWP modes
2510  * are supported. At the moment, only AES is approved by NIST.
2511  *
2512  * Module:  library/nist_kw.c
2513  *
2514  * Requires: MBEDTLS_AES_C and MBEDTLS_CIPHER_C
2515  */
2516 //#define MBEDTLS_NIST_KW_C
2517 
2518 /**
2519  * \def MBEDTLS_MD_C
2520  *
2521  * Enable the generic message digest layer.
2522  *
2523  * Module:  library/md.c
2524  * Caller:
2525  *
2526  * Uncomment to enable generic message digest wrappers.
2527  */
2528 #define MBEDTLS_MD_C
2529 
2530 /**
2531  * \def MBEDTLS_MD2_C
2532  *
2533  * Enable the MD2 hash algorithm.
2534  *
2535  * Module:  library/md2.c
2536  * Caller:
2537  *
2538  * Uncomment to enable support for (rare) MD2-signed X.509 certs.
2539  *
2540  * \warning   MD2 is considered a weak message digest and its use constitutes a
2541  *            security risk. If possible, we recommend avoiding dependencies on
2542  *            it, and considering stronger message digests instead.
2543  *
2544  */
2545 //#define MBEDTLS_MD2_C
2546 
2547 /**
2548  * \def MBEDTLS_MD4_C
2549  *
2550  * Enable the MD4 hash algorithm.
2551  *
2552  * Module:  library/md4.c
2553  * Caller:
2554  *
2555  * Uncomment to enable support for (rare) MD4-signed X.509 certs.
2556  *
2557  * \warning   MD4 is considered a weak message digest and its use constitutes a
2558  *            security risk. If possible, we recommend avoiding dependencies on
2559  *            it, and considering stronger message digests instead.
2560  *
2561  */
2562 //#define MBEDTLS_MD4_C
2563 
2564 /**
2565  * \def MBEDTLS_MD5_C
2566  *
2567  * Enable the MD5 hash algorithm.
2568  *
2569  * Module:  library/md5.c
2570  * Caller:  library/md.c
2571  *          library/pem.c
2572  *          library/ssl_tls.c
2573  *
2574  * This module is required for SSL/TLS up to version 1.1, and for TLS 1.2
2575  * depending on the handshake parameters. Further, it is used for checking
2576  * MD5-signed certificates, and for PBKDF1 when decrypting PEM-encoded
2577  * encrypted keys.
2578  *
2579  * \warning   MD5 is considered a weak message digest and its use constitutes a
2580  *            security risk. If possible, we recommend avoiding dependencies on
2581  *            it, and considering stronger message digests instead.
2582  *
2583  */
2584 #define MBEDTLS_MD5_C
2585 
2586 /**
2587  * \def MBEDTLS_MEMORY_BUFFER_ALLOC_C
2588  *
2589  * Enable the buffer allocator implementation that makes use of a (stack)
2590  * based buffer to 'allocate' dynamic memory. (replaces calloc() and free()
2591  * calls)
2592  *
2593  * Module:  library/memory_buffer_alloc.c
2594  *
2595  * Requires: MBEDTLS_PLATFORM_C
2596  *           MBEDTLS_PLATFORM_MEMORY (to use it within mbed TLS)
2597  *
2598  * Enable this module to enable the buffer memory allocator.
2599  */
2600 //#define MBEDTLS_MEMORY_BUFFER_ALLOC_C
2601 
2602 /**
2603  * \def MBEDTLS_NET_C
2604  *
2605  * Enable the TCP and UDP over IPv6/IPv4 networking routines.
2606  *
2607  * \note This module only works on POSIX/Unix (including Linux, BSD and OS X)
2608  * and Windows. For other platforms, you'll want to disable it, and write your
2609  * own networking callbacks to be passed to \c mbedtls_ssl_set_bio().
2610  *
2611  * \note See also our Knowledge Base article about porting to a new
2612  * environment:
2613  * https://tls.mbed.org/kb/how-to/how-do-i-port-mbed-tls-to-a-new-environment-OS
2614  *
2615  * Module:  library/net_sockets.c
2616  *
2617  * This module provides networking routines.
2618  */
2619 #define MBEDTLS_NET_C
2620 
2621 /**
2622  * \def MBEDTLS_OID_C
2623  *
2624  * Enable the OID database.
2625  *
2626  * Module:  library/oid.c
2627  * Caller:  library/asn1write.c
2628  *          library/pkcs5.c
2629  *          library/pkparse.c
2630  *          library/pkwrite.c
2631  *          library/rsa.c
2632  *          library/x509.c
2633  *          library/x509_create.c
2634  *          library/x509_crl.c
2635  *          library/x509_crt.c
2636  *          library/x509_csr.c
2637  *          library/x509write_crt.c
2638  *          library/x509write_csr.c
2639  *
2640  * This modules translates between OIDs and internal values.
2641  */
2642 #define MBEDTLS_OID_C
2643 
2644 /**
2645  * \def MBEDTLS_PADLOCK_C
2646  *
2647  * Enable VIA Padlock support on x86.
2648  *
2649  * Module:  library/padlock.c
2650  * Caller:  library/aes.c
2651  *
2652  * Requires: MBEDTLS_HAVE_ASM
2653  *
2654  * This modules adds support for the VIA PadLock on x86.
2655  */
2656 #define MBEDTLS_PADLOCK_C
2657 
2658 /**
2659  * \def MBEDTLS_PEM_PARSE_C
2660  *
2661  * Enable PEM decoding / parsing.
2662  *
2663  * Module:  library/pem.c
2664  * Caller:  library/dhm.c
2665  *          library/pkparse.c
2666  *          library/x509_crl.c
2667  *          library/x509_crt.c
2668  *          library/x509_csr.c
2669  *
2670  * Requires: MBEDTLS_BASE64_C
2671  *
2672  * This modules adds support for decoding / parsing PEM files.
2673  */
2674 #define MBEDTLS_PEM_PARSE_C
2675 
2676 /**
2677  * \def MBEDTLS_PEM_WRITE_C
2678  *
2679  * Enable PEM encoding / writing.
2680  *
2681  * Module:  library/pem.c
2682  * Caller:  library/pkwrite.c
2683  *          library/x509write_crt.c
2684  *          library/x509write_csr.c
2685  *
2686  * Requires: MBEDTLS_BASE64_C
2687  *
2688  * This modules adds support for encoding / writing PEM files.
2689  */
2690 #define MBEDTLS_PEM_WRITE_C
2691 
2692 /**
2693  * \def MBEDTLS_PK_C
2694  *
2695  * Enable the generic public (asymetric) key layer.
2696  *
2697  * Module:  library/pk.c
2698  * Caller:  library/ssl_tls.c
2699  *          library/ssl_cli.c
2700  *          library/ssl_srv.c
2701  *
2702  * Requires: MBEDTLS_RSA_C or MBEDTLS_ECP_C
2703  *
2704  * Uncomment to enable generic public key wrappers.
2705  */
2706 #define MBEDTLS_PK_C
2707 
2708 /**
2709  * \def MBEDTLS_PK_PARSE_C
2710  *
2711  * Enable the generic public (asymetric) key parser.
2712  *
2713  * Module:  library/pkparse.c
2714  * Caller:  library/x509_crt.c
2715  *          library/x509_csr.c
2716  *
2717  * Requires: MBEDTLS_PK_C
2718  *
2719  * Uncomment to enable generic public key parse functions.
2720  */
2721 #define MBEDTLS_PK_PARSE_C
2722 
2723 /**
2724  * \def MBEDTLS_PK_WRITE_C
2725  *
2726  * Enable the generic public (asymetric) key writer.
2727  *
2728  * Module:  library/pkwrite.c
2729  * Caller:  library/x509write.c
2730  *
2731  * Requires: MBEDTLS_PK_C
2732  *
2733  * Uncomment to enable generic public key write functions.
2734  */
2735 #define MBEDTLS_PK_WRITE_C
2736 
2737 /**
2738  * \def MBEDTLS_PKCS5_C
2739  *
2740  * Enable PKCS#5 functions.
2741  *
2742  * Module:  library/pkcs5.c
2743  *
2744  * Requires: MBEDTLS_MD_C
2745  *
2746  * This module adds support for the PKCS#5 functions.
2747  */
2748 #define MBEDTLS_PKCS5_C
2749 
2750 /**
2751  * \def MBEDTLS_PKCS11_C
2752  *
2753  * Enable wrapper for PKCS#11 smartcard support.
2754  *
2755  * Module:  library/pkcs11.c
2756  * Caller:  library/pk.c
2757  *
2758  * Requires: MBEDTLS_PK_C
2759  *
2760  * This module enables SSL/TLS PKCS #11 smartcard support.
2761  * Requires the presence of the PKCS#11 helper library (libpkcs11-helper)
2762  */
2763 //#define MBEDTLS_PKCS11_C
2764 
2765 /**
2766  * \def MBEDTLS_PKCS12_C
2767  *
2768  * Enable PKCS#12 PBE functions.
2769  * Adds algorithms for parsing PKCS#8 encrypted private keys
2770  *
2771  * Module:  library/pkcs12.c
2772  * Caller:  library/pkparse.c
2773  *
2774  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_CIPHER_C, MBEDTLS_MD_C
2775  * Can use:  MBEDTLS_ARC4_C
2776  *
2777  * This module enables PKCS#12 functions.
2778  */
2779 #define MBEDTLS_PKCS12_C
2780 
2781 /**
2782  * \def MBEDTLS_PLATFORM_C
2783  *
2784  * Enable the platform abstraction layer that allows you to re-assign
2785  * functions like calloc(), free(), snprintf(), printf(), fprintf(), exit().
2786  *
2787  * Enabling MBEDTLS_PLATFORM_C enables to use of MBEDTLS_PLATFORM_XXX_ALT
2788  * or MBEDTLS_PLATFORM_XXX_MACRO directives, allowing the functions mentioned
2789  * above to be specified at runtime or compile time respectively.
2790  *
2791  * \note This abstraction layer must be enabled on Windows (including MSYS2)
2792  * as other module rely on it for a fixed snprintf implementation.
2793  *
2794  * Module:  library/platform.c
2795  * Caller:  Most other .c files
2796  *
2797  * This module enables abstraction of common (libc) functions.
2798  */
2799 #define MBEDTLS_PLATFORM_C
2800 
2801 /**
2802  * \def MBEDTLS_POLY1305_C
2803  *
2804  * Enable the Poly1305 MAC algorithm.
2805  *
2806  * Module:  library/poly1305.c
2807  * Caller:  library/chachapoly.c
2808  */
2809 #define MBEDTLS_POLY1305_C
2810 
2811 /**
2812  * \def MBEDTLS_RIPEMD160_C
2813  *
2814  * Enable the RIPEMD-160 hash algorithm.
2815  *
2816  * Module:  library/ripemd160.c
2817  * Caller:  library/md.c
2818  *
2819  */
2820 #define MBEDTLS_RIPEMD160_C
2821 
2822 /**
2823  * \def MBEDTLS_RSA_C
2824  *
2825  * Enable the RSA public-key cryptosystem.
2826  *
2827  * Module:  library/rsa.c
2828  *          library/rsa_internal.c
2829  * Caller:  library/ssl_cli.c
2830  *          library/ssl_srv.c
2831  *          library/ssl_tls.c
2832  *          library/x509.c
2833  *
2834  * This module is used by the following key exchanges:
2835  *      RSA, DHE-RSA, ECDHE-RSA, RSA-PSK
2836  *
2837  * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C
2838  */
2839 #define MBEDTLS_RSA_C
2840 
2841 /**
2842  * \def MBEDTLS_SHA1_C
2843  *
2844  * Enable the SHA1 cryptographic hash algorithm.
2845  *
2846  * Module:  library/sha1.c
2847  * Caller:  library/md.c
2848  *          library/ssl_cli.c
2849  *          library/ssl_srv.c
2850  *          library/ssl_tls.c
2851  *          library/x509write_crt.c
2852  *
2853  * This module is required for SSL/TLS up to version 1.1, for TLS 1.2
2854  * depending on the handshake parameters, and for SHA1-signed certificates.
2855  *
2856  * \warning   SHA-1 is considered a weak message digest and its use constitutes
2857  *            a security risk. If possible, we recommend avoiding dependencies
2858  *            on it, and considering stronger message digests instead.
2859  *
2860  */
2861 #define MBEDTLS_SHA1_C
2862 
2863 /**
2864  * \def MBEDTLS_SHA256_C
2865  *
2866  * Enable the SHA-224 and SHA-256 cryptographic hash algorithms.
2867  *
2868  * Module:  library/sha256.c
2869  * Caller:  library/entropy.c
2870  *          library/md.c
2871  *          library/ssl_cli.c
2872  *          library/ssl_srv.c
2873  *          library/ssl_tls.c
2874  *
2875  * This module adds support for SHA-224 and SHA-256.
2876  * This module is required for the SSL/TLS 1.2 PRF function.
2877  */
2878 #define MBEDTLS_SHA256_C
2879 
2880 /**
2881  * \def MBEDTLS_SHA512_C
2882  *
2883  * Enable the SHA-384 and SHA-512 cryptographic hash algorithms.
2884  *
2885  * Module:  library/sha512.c
2886  * Caller:  library/entropy.c
2887  *          library/md.c
2888  *          library/ssl_cli.c
2889  *          library/ssl_srv.c
2890  *
2891  * This module adds support for SHA-384 and SHA-512.
2892  */
2893 #define MBEDTLS_SHA512_C
2894 
2895 /**
2896  * \def MBEDTLS_SSL_CACHE_C
2897  *
2898  * Enable simple SSL cache implementation.
2899  *
2900  * Module:  library/ssl_cache.c
2901  * Caller:
2902  *
2903  * Requires: MBEDTLS_SSL_CACHE_C
2904  */
2905 #define MBEDTLS_SSL_CACHE_C
2906 
2907 /**
2908  * \def MBEDTLS_SSL_COOKIE_C
2909  *
2910  * Enable basic implementation of DTLS cookies for hello verification.
2911  *
2912  * Module:  library/ssl_cookie.c
2913  * Caller:
2914  */
2915 #define MBEDTLS_SSL_COOKIE_C
2916 
2917 /**
2918  * \def MBEDTLS_SSL_TICKET_C
2919  *
2920  * Enable an implementation of TLS server-side callbacks for session tickets.
2921  *
2922  * Module:  library/ssl_ticket.c
2923  * Caller:
2924  *
2925  * Requires: MBEDTLS_CIPHER_C
2926  */
2927 #define MBEDTLS_SSL_TICKET_C
2928 
2929 /**
2930  * \def MBEDTLS_SSL_CLI_C
2931  *
2932  * Enable the SSL/TLS client code.
2933  *
2934  * Module:  library/ssl_cli.c
2935  * Caller:
2936  *
2937  * Requires: MBEDTLS_SSL_TLS_C
2938  *
2939  * This module is required for SSL/TLS client support.
2940  */
2941 #define MBEDTLS_SSL_CLI_C
2942 
2943 /**
2944  * \def MBEDTLS_SSL_SRV_C
2945  *
2946  * Enable the SSL/TLS server code.
2947  *
2948  * Module:  library/ssl_srv.c
2949  * Caller:
2950  *
2951  * Requires: MBEDTLS_SSL_TLS_C
2952  *
2953  * This module is required for SSL/TLS server support.
2954  */
2955 #define MBEDTLS_SSL_SRV_C
2956 
2957 /**
2958  * \def MBEDTLS_SSL_TLS_C
2959  *
2960  * Enable the generic SSL/TLS code.
2961  *
2962  * Module:  library/ssl_tls.c
2963  * Caller:  library/ssl_cli.c
2964  *          library/ssl_srv.c
2965  *
2966  * Requires: MBEDTLS_CIPHER_C, MBEDTLS_MD_C
2967  *           and at least one of the MBEDTLS_SSL_PROTO_XXX defines
2968  *
2969  * This module is required for SSL/TLS.
2970  */
2971 #define MBEDTLS_SSL_TLS_C
2972 
2973 /**
2974  * \def MBEDTLS_THREADING_C
2975  *
2976  * Enable the threading abstraction layer.
2977  * By default mbed TLS assumes it is used in a non-threaded environment or that
2978  * contexts are not shared between threads. If you do intend to use contexts
2979  * between threads, you will need to enable this layer to prevent race
2980  * conditions. See also our Knowledge Base article about threading:
2981  * https://tls.mbed.org/kb/development/thread-safety-and-multi-threading
2982  *
2983  * Module:  library/threading.c
2984  *
2985  * This allows different threading implementations (self-implemented or
2986  * provided).
2987  *
2988  * You will have to enable either MBEDTLS_THREADING_ALT or
2989  * MBEDTLS_THREADING_PTHREAD.
2990  *
2991  * Enable this layer to allow use of mutexes within mbed TLS
2992  */
2993 #define MBEDTLS_THREADING_C
2994 
2995 /**
2996  * \def MBEDTLS_TIMING_C
2997  *
2998  * Enable the semi-portable timing interface.
2999  *
3000  * \note The provided implementation only works on POSIX/Unix (including Linux,
3001  * BSD and OS X) and Windows. On other platforms, you can either disable that
3002  * module and provide your own implementations of the callbacks needed by
3003  * \c mbedtls_ssl_set_timer_cb() for DTLS, or leave it enabled and provide
3004  * your own implementation of the whole module by setting
3005  * \c MBEDTLS_TIMING_ALT in the current file.
3006  *
3007  * \note See also our Knowledge Base article about porting to a new
3008  * environment:
3009  * https://tls.mbed.org/kb/how-to/how-do-i-port-mbed-tls-to-a-new-environment-OS
3010  *
3011  * Module:  library/timing.c
3012  * Caller:  library/havege.c
3013  *
3014  * This module is used by the HAVEGE random number generator.
3015  */
3016 #define MBEDTLS_TIMING_C
3017 
3018 /**
3019  * \def MBEDTLS_VERSION_C
3020  *
3021  * Enable run-time version information.
3022  *
3023  * Module:  library/version.c
3024  *
3025  * This module provides run-time version information.
3026  */
3027 #define MBEDTLS_VERSION_C
3028 
3029 /**
3030  * \def MBEDTLS_X509_USE_C
3031  *
3032  * Enable X.509 core for using certificates.
3033  *
3034  * Module:  library/x509.c
3035  * Caller:  library/x509_crl.c
3036  *          library/x509_crt.c
3037  *          library/x509_csr.c
3038  *
3039  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_BIGNUM_C, MBEDTLS_OID_C,
3040  *           MBEDTLS_PK_PARSE_C
3041  *
3042  * This module is required for the X.509 parsing modules.
3043  */
3044 #define MBEDTLS_X509_USE_C
3045 
3046 /**
3047  * \def MBEDTLS_X509_CRT_PARSE_C
3048  *
3049  * Enable X.509 certificate parsing.
3050  *
3051  * Module:  library/x509_crt.c
3052  * Caller:  library/ssl_cli.c
3053  *          library/ssl_srv.c
3054  *          library/ssl_tls.c
3055  *
3056  * Requires: MBEDTLS_X509_USE_C
3057  *
3058  * This module is required for X.509 certificate parsing.
3059  */
3060 #define MBEDTLS_X509_CRT_PARSE_C
3061 
3062 /**
3063  * \def MBEDTLS_X509_CRL_PARSE_C
3064  *
3065  * Enable X.509 CRL parsing.
3066  *
3067  * Module:  library/x509_crl.c
3068  * Caller:  library/x509_crt.c
3069  *
3070  * Requires: MBEDTLS_X509_USE_C
3071  *
3072  * This module is required for X.509 CRL parsing.
3073  */
3074 #define MBEDTLS_X509_CRL_PARSE_C
3075 
3076 /**
3077  * \def MBEDTLS_X509_CSR_PARSE_C
3078  *
3079  * Enable X.509 Certificate Signing Request (CSR) parsing.
3080  *
3081  * Module:  library/x509_csr.c
3082  * Caller:  library/x509_crt_write.c
3083  *
3084  * Requires: MBEDTLS_X509_USE_C
3085  *
3086  * This module is used for reading X.509 certificate request.
3087  */
3088 #define MBEDTLS_X509_CSR_PARSE_C
3089 
3090 /**
3091  * \def MBEDTLS_X509_CREATE_C
3092  *
3093  * Enable X.509 core for creating certificates.
3094  *
3095  * Module:  library/x509_create.c
3096  *
3097  * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C, MBEDTLS_PK_WRITE_C
3098  *
3099  * This module is the basis for creating X.509 certificates and CSRs.
3100  */
3101 #define MBEDTLS_X509_CREATE_C
3102 
3103 /**
3104  * \def MBEDTLS_X509_CRT_WRITE_C
3105  *
3106  * Enable creating X.509 certificates.
3107  *
3108  * Module:  library/x509_crt_write.c
3109  *
3110  * Requires: MBEDTLS_X509_CREATE_C
3111  *
3112  * This module is required for X.509 certificate creation.
3113  */
3114 #define MBEDTLS_X509_CRT_WRITE_C
3115 
3116 /**
3117  * \def MBEDTLS_X509_CSR_WRITE_C
3118  *
3119  * Enable creating X.509 Certificate Signing Requests (CSR).
3120  *
3121  * Module:  library/x509_csr_write.c
3122  *
3123  * Requires: MBEDTLS_X509_CREATE_C
3124  *
3125  * This module is required for X.509 certificate request writing.
3126  */
3127 #define MBEDTLS_X509_CSR_WRITE_C
3128 
3129 /**
3130  * \def MBEDTLS_XTEA_C
3131  *
3132  * Enable the XTEA block cipher.
3133  *
3134  * Module:  library/xtea.c
3135  * Caller:
3136  */
3137 #define MBEDTLS_XTEA_C
3138 
3139 /* \} name SECTION: mbed TLS modules */
3140 
3141 /**
3142  * \name SECTION: Module configuration options
3143  *
3144  * This section allows for the setting of module specific sizes and
3145  * configuration options. The default values are already present in the
3146  * relevant header files and should suffice for the regular use cases.
3147  *
3148  * Our advice is to enable options and change their values here
3149  * only if you have a good reason and know the consequences.
3150  *
3151  * Please check the respective header file for documentation on these
3152  * parameters (to prevent duplicate documentation).
3153  * \{
3154  */
3155 
3156 /* MPI / BIGNUM options */
3157 //#define MBEDTLS_MPI_WINDOW_SIZE            6 /**< Maximum window size used. */
3158 //#define MBEDTLS_MPI_MAX_SIZE            1024 /**< Maximum number of bytes for usable MPIs. */
3159 
3160 /* CTR_DRBG options */
3161 //#define MBEDTLS_CTR_DRBG_ENTROPY_LEN               48 /**< Amount of entropy used per seed by default (48 with SHA-512, 32 with SHA-256) */
3162 //#define MBEDTLS_CTR_DRBG_RESEED_INTERVAL        10000 /**< Interval before reseed is performed by default */
3163 //#define MBEDTLS_CTR_DRBG_MAX_INPUT                256 /**< Maximum number of additional input bytes */
3164 //#define MBEDTLS_CTR_DRBG_MAX_REQUEST             1024 /**< Maximum number of requested bytes per call */
3165 //#define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT           384 /**< Maximum size of (re)seed buffer */
3166 
3167 /* HMAC_DRBG options */
3168 //#define MBEDTLS_HMAC_DRBG_RESEED_INTERVAL   10000 /**< Interval before reseed is performed by default */
3169 //#define MBEDTLS_HMAC_DRBG_MAX_INPUT           256 /**< Maximum number of additional input bytes */
3170 //#define MBEDTLS_HMAC_DRBG_MAX_REQUEST        1024 /**< Maximum number of requested bytes per call */
3171 //#define MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT      384 /**< Maximum size of (re)seed buffer */
3172 
3173 /* ECP options */
3174 //#define MBEDTLS_ECP_MAX_BITS             521 /**< Maximum bit size of groups */
3175 //#define MBEDTLS_ECP_WINDOW_SIZE            6 /**< Maximum window size used */
3176 //#define MBEDTLS_ECP_FIXED_POINT_OPTIM      1 /**< Enable fixed-point speed-up */
3177 
3178 /* Entropy options */
3179 //#define MBEDTLS_ENTROPY_MAX_SOURCES                20 /**< Maximum number of sources supported */
3180 //#define MBEDTLS_ENTROPY_MAX_GATHER                128 /**< Maximum amount requested from entropy sources */
3181 //#define MBEDTLS_ENTROPY_MIN_HARDWARE               32 /**< Default minimum number of bytes required for the hardware entropy source mbedtls_hardware_poll() before entropy is released */
3182 
3183 /* Memory buffer allocator options */
3184 //#define MBEDTLS_MEMORY_ALIGN_MULTIPLE      4 /**< Align on multiples of this value */
3185 
3186 /* Platform options */
3187 //#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. */
3188 //#define MBEDTLS_PLATFORM_STD_CALLOC        calloc /**< Default allocator to use, can be undefined */
3189 //#define MBEDTLS_PLATFORM_STD_FREE            free /**< Default free to use, can be undefined */
3190 //#define MBEDTLS_PLATFORM_STD_EXIT            exit /**< Default exit to use, can be undefined */
3191 //#define MBEDTLS_PLATFORM_STD_TIME            time /**< Default time to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3192 //#define MBEDTLS_PLATFORM_STD_FPRINTF      fprintf /**< Default fprintf to use, can be undefined */
3193 //#define MBEDTLS_PLATFORM_STD_PRINTF        printf /**< Default printf to use, can be undefined */
3194 /* Note: your snprintf must correctly zero-terminate the buffer! */
3195 //#define MBEDTLS_PLATFORM_STD_SNPRINTF    snprintf /**< Default snprintf to use, can be undefined */
3196 //#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS       0 /**< Default exit value to use, can be undefined */
3197 //#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE       1 /**< Default exit value to use, can be undefined */
3198 //#define MBEDTLS_PLATFORM_STD_NV_SEED_READ   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */
3199 //#define MBEDTLS_PLATFORM_STD_NV_SEED_WRITE  mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */
3200 //#define MBEDTLS_PLATFORM_STD_NV_SEED_FILE  "seedfile" /**< Seed file to read/write with default implementation */
3201 
3202 /* To Use Function Macros MBEDTLS_PLATFORM_C must be enabled */
3203 /* MBEDTLS_PLATFORM_XXX_MACRO and MBEDTLS_PLATFORM_XXX_ALT cannot both be defined */
3204 //#define MBEDTLS_PLATFORM_CALLOC_MACRO        calloc /**< Default allocator macro to use, can be undefined */
3205 //#define MBEDTLS_PLATFORM_FREE_MACRO            free /**< Default free macro to use, can be undefined */
3206 //#define MBEDTLS_PLATFORM_EXIT_MACRO            exit /**< Default exit macro to use, can be undefined */
3207 //#define MBEDTLS_PLATFORM_TIME_MACRO            time /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3208 //#define MBEDTLS_PLATFORM_TIME_TYPE_MACRO       time_t /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
3209 //#define MBEDTLS_PLATFORM_FPRINTF_MACRO      fprintf /**< Default fprintf macro to use, can be undefined */
3210 //#define MBEDTLS_PLATFORM_PRINTF_MACRO        printf /**< Default printf macro to use, can be undefined */
3211 /* Note: your snprintf must correctly zero-terminate the buffer! */
3212 //#define MBEDTLS_PLATFORM_SNPRINTF_MACRO    snprintf /**< Default snprintf macro to use, can be undefined */
3213 //#define MBEDTLS_PLATFORM_NV_SEED_READ_MACRO   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */
3214 //#define MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO  mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */
3215 
3216 /**
3217  * \brief       This macro is invoked by the library when an invalid parameter
3218  *              is detected that is only checked with #MBEDTLS_CHECK_PARAMS
3219  *              (see the documentation of that option for context).
3220  *
3221  *              When you leave this undefined here, the library provides
3222  *              a default definition. If the macro #MBEDTLS_CHECK_PARAMS_ASSERT
3223  *              is defined, the default definition is `assert(cond)`,
3224  *              otherwise the default definition calls a function
3225  *              mbedtls_param_failed(). This function is declared in
3226  *              `platform_util.h` for the benefit of the library, but
3227  *              you need to define in your application.
3228  *
3229  *              When you define this here, this replaces the default
3230  *              definition in platform_util.h (which no longer declares the
3231  *              function mbedtls_param_failed()) and it is your responsibility
3232  *              to make sure this macro expands to something suitable (in
3233  *              particular, that all the necessary declarations are visible
3234  *              from within the library - you can ensure that by providing
3235  *              them in this file next to the macro definition).
3236  *              If you define this macro to call `assert`, also define
3237  *              #MBEDTLS_CHECK_PARAMS_ASSERT so that library source files
3238  *              include `<assert.h>`.
3239  *
3240  *              Note that you may define this macro to expand to nothing, in
3241  *              which case you don't have to worry about declarations or
3242  *              definitions. However, you will then be notified about invalid
3243  *              parameters only in non-void functions, and void function will
3244  *              just silently return early on invalid parameters, which
3245  *              partially negates the benefits of enabling
3246  *              #MBEDTLS_CHECK_PARAMS in the first place, so is discouraged.
3247  *
3248  * \param cond  The expression that should evaluate to true, but doesn't.
3249  */
3250 //#define MBEDTLS_PARAM_FAILED( cond )               assert( cond )
3251 
3252 /* SSL Cache options */
3253 //#define MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT       86400 /**< 1 day  */
3254 //#define MBEDTLS_SSL_CACHE_DEFAULT_MAX_ENTRIES      50 /**< Maximum entries in cache */
3255 
3256 /* SSL options */
3257 
3258 /** \def MBEDTLS_SSL_MAX_CONTENT_LEN
3259  *
3260  * Maximum length (in bytes) of incoming and outgoing plaintext fragments.
3261  *
3262  * This determines the size of both the incoming and outgoing TLS I/O buffers
3263  * in such a way that both are capable of holding the specified amount of
3264  * plaintext data, regardless of the protection mechanism used.
3265  *
3266  * To configure incoming and outgoing I/O buffers separately, use
3267  * #MBEDTLS_SSL_IN_CONTENT_LEN and #MBEDTLS_SSL_OUT_CONTENT_LEN,
3268  * which overwrite the value set by this option.
3269  *
3270  * \note When using a value less than the default of 16KB on the client, it is
3271  *       recommended to use the Maximum Fragment Length (MFL) extension to
3272  *       inform the server about this limitation. On the server, there
3273  *       is no supported, standardized way of informing the client about
3274  *       restriction on the maximum size of incoming messages, and unless
3275  *       the limitation has been communicated by other means, it is recommended
3276  *       to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN
3277  *       while keeping the default value of 16KB for the incoming buffer.
3278  *
3279  * Uncomment to set the maximum plaintext size of both
3280  * incoming and outgoing I/O buffers.
3281  */
3282 //#define MBEDTLS_SSL_MAX_CONTENT_LEN             16384
3283 
3284 /** \def MBEDTLS_SSL_IN_CONTENT_LEN
3285  *
3286  * Maximum length (in bytes) of incoming plaintext fragments.
3287  *
3288  * This determines the size of the incoming TLS I/O buffer in such a way
3289  * that it is capable of holding the specified amount of plaintext data,
3290  * regardless of the protection mechanism used.
3291  *
3292  * If this option is undefined, it inherits its value from
3293  * #MBEDTLS_SSL_MAX_CONTENT_LEN.
3294  *
3295  * \note When using a value less than the default of 16KB on the client, it is
3296  *       recommended to use the Maximum Fragment Length (MFL) extension to
3297  *       inform the server about this limitation. On the server, there
3298  *       is no supported, standardized way of informing the client about
3299  *       restriction on the maximum size of incoming messages, and unless
3300  *       the limitation has been communicated by other means, it is recommended
3301  *       to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN
3302  *       while keeping the default value of 16KB for the incoming buffer.
3303  *
3304  * Uncomment to set the maximum plaintext size of the incoming I/O buffer
3305  * independently of the outgoing I/O buffer.
3306  */
3307 //#define MBEDTLS_SSL_IN_CONTENT_LEN              16384
3308 
3309 /** \def MBEDTLS_SSL_OUT_CONTENT_LEN
3310  *
3311  * Maximum length (in bytes) of outgoing plaintext fragments.
3312  *
3313  * This determines the size of the outgoing TLS I/O buffer in such a way
3314  * that it is capable of holding the specified amount of plaintext data,
3315  * regardless of the protection mechanism used.
3316  *
3317  * If this option undefined, it inherits its value from
3318  * #MBEDTLS_SSL_MAX_CONTENT_LEN.
3319  *
3320  * It is possible to save RAM by setting a smaller outward buffer, while keeping
3321  * the default inward 16384 byte buffer to conform to the TLS specification.
3322  *
3323  * The minimum required outward buffer size is determined by the handshake
3324  * protocol's usage. Handshaking will fail if the outward buffer is too small.
3325  * The specific size requirement depends on the configured ciphers and any
3326  * certificate data which is sent during the handshake.
3327  *
3328  * Uncomment to set the maximum plaintext size of the outgoing I/O buffer
3329  * independently of the incoming I/O buffer.
3330  */
3331 //#define MBEDTLS_SSL_OUT_CONTENT_LEN             16384
3332 
3333 /** \def MBEDTLS_SSL_DTLS_MAX_BUFFERING
3334  *
3335  * Maximum number of heap-allocated bytes for the purpose of
3336  * DTLS handshake message reassembly and future message buffering.
3337  *
3338  * This should be at least 9/8 * MBEDTLSSL_IN_CONTENT_LEN
3339  * to account for a reassembled handshake message of maximum size,
3340  * together with its reassembly bitmap.
3341  *
3342  * A value of 2 * MBEDTLS_SSL_IN_CONTENT_LEN (32768 by default)
3343  * should be sufficient for all practical situations as it allows
3344  * to reassembly a large handshake message (such as a certificate)
3345  * while buffering multiple smaller handshake messages.
3346  *
3347  */
3348 //#define MBEDTLS_SSL_DTLS_MAX_BUFFERING             32768
3349 
3350 //#define MBEDTLS_SSL_DEFAULT_TICKET_LIFETIME     86400 /**< Lifetime of session tickets (if enabled) */
3351 //#define MBEDTLS_PSK_MAX_LEN               32 /**< Max size of TLS pre-shared keys, in bytes (default 256 bits) */
3352 //#define MBEDTLS_SSL_COOKIE_TIMEOUT        60 /**< Default expiration delay of DTLS cookies, in seconds if HAVE_TIME, or in number of cookies issued */
3353 
3354 /**
3355  * Complete list of ciphersuites to use, in order of preference.
3356  *
3357  * \warning No dependency checking is done on that field! This option can only
3358  * be used to restrict the set of available ciphersuites. It is your
3359  * responsibility to make sure the needed modules are active.
3360  *
3361  * Use this to save a few hundred bytes of ROM (default ordering of all
3362  * available ciphersuites) and a few to a few hundred bytes of RAM.
3363  *
3364  * The value below is only an example, not the default.
3365  */
3366 //#define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
3367 
3368 /* X509 options */
3369 //#define MBEDTLS_X509_MAX_INTERMEDIATE_CA   8   /**< Maximum number of intermediate CAs in a verification chain. */
3370 //#define MBEDTLS_X509_MAX_FILE_PATH_LEN     512 /**< Maximum length of a path/filename string in bytes including the null terminator character ('\0'). */
3371 
3372 /**
3373  * Allow SHA-1 in the default TLS configuration for certificate signing.
3374  * Without this build-time option, SHA-1 support must be activated explicitly
3375  * through mbedtls_ssl_conf_cert_profile. Turning on this option is not
3376  * recommended because of it is possible to generate SHA-1 collisions, however
3377  * this may be safe for legacy infrastructure where additional controls apply.
3378  *
3379  * \warning   SHA-1 is considered a weak message digest and its use constitutes
3380  *            a security risk. If possible, we recommend avoiding dependencies
3381  *            on it, and considering stronger message digests instead.
3382  *
3383  */
3384 // #define MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
3385 
3386 /**
3387  * Allow SHA-1 in the default TLS configuration for TLS 1.2 handshake
3388  * signature and ciphersuite selection. Without this build-time option, SHA-1
3389  * support must be activated explicitly through mbedtls_ssl_conf_sig_hashes.
3390  * The use of SHA-1 in TLS <= 1.1 and in HMAC-SHA-1 is always allowed by
3391  * default. At the time of writing, there is no practical attack on the use
3392  * of SHA-1 in handshake signatures, hence this option is turned on by default
3393  * to preserve compatibility with existing peers, but the general
3394  * warning applies nonetheless:
3395  *
3396  * \warning   SHA-1 is considered a weak message digest and its use constitutes
3397  *            a security risk. If possible, we recommend avoiding dependencies
3398  *            on it, and considering stronger message digests instead.
3399  *
3400  */
3401 #define MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE
3402 
3403 /**
3404  * Uncomment the macro to let mbed TLS use your alternate implementation of
3405  * mbedtls_platform_zeroize(). This replaces the default implementation in
3406  * platform_util.c.
3407  *
3408  * mbedtls_platform_zeroize() is a widely used function across the library to
3409  * zero a block of memory. The implementation is expected to be secure in the
3410  * sense that it has been written to prevent the compiler from removing calls
3411  * to mbedtls_platform_zeroize() as part of redundant code elimination
3412  * optimizations. However, it is difficult to guarantee that calls to
3413  * mbedtls_platform_zeroize() will not be optimized by the compiler as older
3414  * versions of the C language standards do not provide a secure implementation
3415  * of memset(). Therefore, MBEDTLS_PLATFORM_ZEROIZE_ALT enables users to
3416  * configure their own implementation of mbedtls_platform_zeroize(), for
3417  * example by using directives specific to their compiler, features from newer
3418  * C standards (e.g using memset_s() in C11) or calling a secure memset() from
3419  * their system (e.g explicit_bzero() in BSD).
3420  */
3421 //#define MBEDTLS_PLATFORM_ZEROIZE_ALT
3422 
3423 /**
3424  * Uncomment the macro to let Mbed TLS use your alternate implementation of
3425  * mbedtls_platform_gmtime_r(). This replaces the default implementation in
3426  * platform_util.c.
3427  *
3428  * gmtime() is not a thread-safe function as defined in the C standard. The
3429  * library will try to use safer implementations of this function, such as
3430  * gmtime_r() when available. However, if Mbed TLS cannot identify the target
3431  * system, the implementation of mbedtls_platform_gmtime_r() will default to
3432  * using the standard gmtime(). In this case, calls from the library to
3433  * gmtime() will be guarded by the global mutex mbedtls_threading_gmtime_mutex
3434  * if MBEDTLS_THREADING_C is enabled. We recommend that calls from outside the
3435  * library are also guarded with this mutex to avoid race conditions. However,
3436  * if the macro MBEDTLS_PLATFORM_GMTIME_R_ALT is defined, Mbed TLS will
3437  * unconditionally use the implementation for mbedtls_platform_gmtime_r()
3438  * supplied at compile time.
3439  */
3440 //#define MBEDTLS_PLATFORM_GMTIME_R_ALT
3441 
3442 /* \} name SECTION: Customisation configuration options */
3443 
3444 /* Target and application specific configurations
3445  *
3446  * Allow user to override any previous default.
3447  *
3448  */
3449 #if defined(MBEDTLS_USER_CONFIG_FILE)
3450 #include MBEDTLS_USER_CONFIG_FILE
3451 #endif
3452 
3453 #include "check_config.h"
3454 
3455 #endif /* MBEDTLS_CONFIG_H */
3456