Mbed TLS v2.28.5
cipher.h
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1
10/*
11 * Copyright The Mbed TLS Contributors
12 * SPDX-License-Identifier: Apache-2.0
13 *
14 * Licensed under the Apache License, Version 2.0 (the "License"); you may
15 * not use this file except in compliance with the License.
16 * You may obtain a copy of the License at
17 *
18 * http://www.apache.org/licenses/LICENSE-2.0
19 *
20 * Unless required by applicable law or agreed to in writing, software
21 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
22 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
23 * See the License for the specific language governing permissions and
24 * limitations under the License.
25 */
26
27#ifndef MBEDTLS_CIPHER_H
28#define MBEDTLS_CIPHER_H
29
30#if !defined(MBEDTLS_CONFIG_FILE)
31#include "mbedtls/config.h"
32#else
33#include MBEDTLS_CONFIG_FILE
34#endif
35
36#include <stddef.h>
38
39#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
40#define MBEDTLS_CIPHER_MODE_AEAD
41#endif
42
43#if defined(MBEDTLS_CIPHER_MODE_CBC)
44#define MBEDTLS_CIPHER_MODE_WITH_PADDING
45#endif
46
47#if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER) || \
48 defined(MBEDTLS_CHACHA20_C)
49#define MBEDTLS_CIPHER_MODE_STREAM
50#endif
51
52#if (defined(__ARMCC_VERSION) || defined(_MSC_VER)) && \
53 !defined(inline) && !defined(__cplusplus)
54#define inline __inline
55#endif
56
58#define MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE -0x6080
60#define MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA -0x6100
62#define MBEDTLS_ERR_CIPHER_ALLOC_FAILED -0x6180
64#define MBEDTLS_ERR_CIPHER_INVALID_PADDING -0x6200
66#define MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED -0x6280
68#define MBEDTLS_ERR_CIPHER_AUTH_FAILED -0x6300
70#define MBEDTLS_ERR_CIPHER_INVALID_CONTEXT -0x6380
71
72/* MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED is deprecated and should not be used. */
74#define MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED -0x6400
75
76#define MBEDTLS_CIPHER_VARIABLE_IV_LEN 0x01
77#define MBEDTLS_CIPHER_VARIABLE_KEY_LEN 0x02
79#ifdef __cplusplus
80extern "C" {
81#endif
82
90typedef enum {
102
110typedef enum {
192
194typedef enum {
209
211typedef enum {
218
220typedef enum {
225
226enum {
235};
236
238/* This should ideally be derived automatically from list of ciphers.
239 * This should be kept in sync with MBEDTLS_SSL_MAX_IV_LENGTH defined
240 * in ssl_internal.h. */
241#define MBEDTLS_MAX_IV_LENGTH 16
242
244/* This should ideally be derived automatically from list of ciphers.
245 * This should be kept in sync with MBEDTLS_SSL_MAX_BLOCK_LENGTH defined
246 * in ssl_internal.h. */
247#define MBEDTLS_MAX_BLOCK_LENGTH 16
248
250/* This should ideally be derived automatically from list of ciphers.
251 * For now, only check whether XTS is enabled which uses 64 Byte keys,
252 * and use 32 Bytes as an upper bound for the maximum key length otherwise.
253 * This should be kept in sync with MBEDTLS_SSL_MAX_BLOCK_LENGTH defined
254 * in ssl_internal.h, which however deliberately ignores the case of XTS
255 * since the latter isn't used in SSL/TLS. */
256#if defined(MBEDTLS_CIPHER_MODE_XTS)
257#define MBEDTLS_MAX_KEY_LENGTH 64
258#else
259#define MBEDTLS_MAX_KEY_LENGTH 32
260#endif /* MBEDTLS_CIPHER_MODE_XTS */
261
266
271
276typedef struct mbedtls_cipher_info_t {
281
284
289 unsigned int key_bitlen;
290
292 const char *name;
293
298 unsigned int iv_size;
299
304 int flags;
305
307 unsigned int block_size;
308
311
313
320
323
328
329#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
333 void (*add_padding)(unsigned char *output, size_t olen, size_t data_len);
334 int (*get_padding)(unsigned char *input, size_t ilen, size_t *data_len);
335#endif
336
339
342
345 unsigned char iv[MBEDTLS_MAX_IV_LENGTH];
346
348 size_t iv_size;
349
352
353#if defined(MBEDTLS_CMAC_C)
355 mbedtls_cmac_context_t *cmac_ctx;
356#endif
357
358#if defined(MBEDTLS_USE_PSA_CRYPTO)
366 unsigned char psa_enabled;
367#endif /* MBEDTLS_USE_PSA_CRYPTO */
368
370
384const int *mbedtls_cipher_list(void);
385
398
410
426 int key_bitlen,
427 const mbedtls_cipher_mode_t mode);
428
435
446
447
485 const mbedtls_cipher_info_t *cipher_info);
486
487#if defined(MBEDTLS_USE_PSA_CRYPTO)
509int mbedtls_cipher_setup_psa(mbedtls_cipher_context_t *ctx,
510 const mbedtls_cipher_info_t *cipher_info,
511 size_t taglen);
512#endif /* MBEDTLS_USE_PSA_CRYPTO */
513
522static inline unsigned int mbedtls_cipher_get_block_size(
523 const mbedtls_cipher_context_t *ctx)
524{
525 MBEDTLS_INTERNAL_VALIDATE_RET(ctx != NULL, 0);
526 if (ctx->cipher_info == NULL) {
527 return 0;
528 }
529
530 return ctx->cipher_info->block_size;
531}
532
543 const mbedtls_cipher_context_t *ctx)
544{
546 if (ctx->cipher_info == NULL) {
547 return MBEDTLS_MODE_NONE;
548 }
549
550 return ctx->cipher_info->mode;
551}
552
564 const mbedtls_cipher_context_t *ctx)
565{
566 MBEDTLS_INTERNAL_VALIDATE_RET(ctx != NULL, 0);
567 if (ctx->cipher_info == NULL) {
568 return 0;
569 }
570
571 if (ctx->iv_size != 0) {
572 return (int) ctx->iv_size;
573 }
574
575 return (int) ctx->cipher_info->iv_size;
576}
577
587 const mbedtls_cipher_context_t *ctx)
588{
590 ctx != NULL, MBEDTLS_CIPHER_NONE);
591 if (ctx->cipher_info == NULL) {
592 return MBEDTLS_CIPHER_NONE;
593 }
594
595 return ctx->cipher_info->type;
596}
597
607static inline const char *mbedtls_cipher_get_name(
608 const mbedtls_cipher_context_t *ctx)
609{
610 MBEDTLS_INTERNAL_VALIDATE_RET(ctx != NULL, 0);
611 if (ctx->cipher_info == NULL) {
612 return 0;
613 }
614
615 return ctx->cipher_info->name;
616}
617
628 const mbedtls_cipher_context_t *ctx)
629{
631 ctx != NULL, MBEDTLS_KEY_LENGTH_NONE);
632 if (ctx->cipher_info == NULL) {
634 }
635
636 return (int) ctx->cipher_info->key_bitlen;
637}
638
648 const mbedtls_cipher_context_t *ctx)
649{
651 ctx != NULL, MBEDTLS_OPERATION_NONE);
652 if (ctx->cipher_info == NULL) {
654 }
655
656 return ctx->operation;
657}
658
676 const unsigned char *key,
677 int key_bitlen,
678 const mbedtls_operation_t operation);
679
680#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
697#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
698
718 const unsigned char *iv,
719 size_t iv_len);
720
753
754#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
770 const unsigned char *ad, size_t ad_len);
771#endif /* MBEDTLS_GCM_C || MBEDTLS_CHACHAPOLY_C */
772
808 const unsigned char *input,
809 size_t ilen, unsigned char *output,
810 size_t *olen);
811
835 unsigned char *output, size_t *olen);
836
837#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
855 unsigned char *tag, size_t tag_len);
856
871 const unsigned char *tag, size_t tag_len);
872#endif /* MBEDTLS_GCM_C || MBEDTLS_CHACHAPOLY_C */
873
908 const unsigned char *iv, size_t iv_len,
909 const unsigned char *input, size_t ilen,
910 unsigned char *output, size_t *olen);
911
912#if defined(MBEDTLS_CIPHER_MODE_AEAD)
913#if !defined(MBEDTLS_DEPRECATED_REMOVED)
914#if defined(MBEDTLS_DEPRECATED_WARNING)
915#define MBEDTLS_DEPRECATED __attribute__((deprecated))
916#else
917#define MBEDTLS_DEPRECATED
918#endif /* MBEDTLS_DEPRECATED_WARNING */
967 const unsigned char *iv, size_t iv_len,
968 const unsigned char *ad, size_t ad_len,
969 const unsigned char *input, size_t ilen,
970 unsigned char *output, size_t *olen,
971 unsigned char *tag, size_t tag_len);
972
1026 const unsigned char *iv, size_t iv_len,
1027 const unsigned char *ad, size_t ad_len,
1028 const unsigned char *input, size_t ilen,
1029 unsigned char *output, size_t *olen,
1030 const unsigned char *tag, size_t tag_len);
1031#undef MBEDTLS_DEPRECATED
1032#endif /* MBEDTLS_DEPRECATED_REMOVED */
1033#endif /* MBEDTLS_CIPHER_MODE_AEAD */
1034
1035#if defined(MBEDTLS_CIPHER_MODE_AEAD) || defined(MBEDTLS_NIST_KW_C)
1081 const unsigned char *iv, size_t iv_len,
1082 const unsigned char *ad, size_t ad_len,
1083 const unsigned char *input, size_t ilen,
1084 unsigned char *output, size_t output_len,
1085 size_t *olen, size_t tag_len);
1086
1137 const unsigned char *iv, size_t iv_len,
1138 const unsigned char *ad, size_t ad_len,
1139 const unsigned char *input, size_t ilen,
1140 unsigned char *output, size_t output_len,
1141 size_t *olen, size_t tag_len);
1142#endif /* MBEDTLS_CIPHER_MODE_AEAD || MBEDTLS_NIST_KW_C */
1143#ifdef __cplusplus
1144}
1145#endif
1146
1147#endif /* MBEDTLS_CIPHER_H */
int mbedtls_cipher_setup(mbedtls_cipher_context_t *ctx, const mbedtls_cipher_info_t *cipher_info)
This function prepares a cipher context for use with the given cipher primitive.
mbedtls_cipher_type_t
Supported {cipher type, cipher mode} pairs.
Definition: cipher.h:110
@ MBEDTLS_CIPHER_AES_128_ECB
Definition: cipher.h:113
@ MBEDTLS_CIPHER_ARIA_256_CTR
Definition: cipher.h:171
@ MBEDTLS_CIPHER_CAMELLIA_128_GCM
Definition: cipher.h:140
@ MBEDTLS_CIPHER_AES_128_XTS
Definition: cipher.h:181
@ MBEDTLS_CIPHER_CHACHA20
Definition: cipher.h:183
@ MBEDTLS_CIPHER_DES_EDE3_CBC
Definition: cipher.h:148
@ MBEDTLS_CIPHER_DES_ECB
Definition: cipher.h:143
@ MBEDTLS_CIPHER_ARIA_128_GCM
Definition: cipher.h:172
@ MBEDTLS_CIPHER_AES_128_CBC
Definition: cipher.h:116
@ MBEDTLS_CIPHER_AES_192_GCM
Definition: cipher.h:126
@ MBEDTLS_CIPHER_BLOWFISH_CTR
Definition: cipher.h:152
@ MBEDTLS_CIPHER_AES_128_OFB
Definition: cipher.h:178
@ MBEDTLS_CIPHER_ARIA_192_ECB
Definition: cipher.h:161
@ MBEDTLS_CIPHER_CAMELLIA_256_GCM
Definition: cipher.h:142
@ MBEDTLS_CIPHER_DES_EDE_ECB
Definition: cipher.h:145
@ MBEDTLS_CIPHER_BLOWFISH_CFB64
Definition: cipher.h:151
@ MBEDTLS_CIPHER_ARIA_256_CFB128
Definition: cipher.h:168
@ MBEDTLS_CIPHER_ARIA_192_CBC
Definition: cipher.h:164
@ MBEDTLS_CIPHER_CAMELLIA_192_CBC
Definition: cipher.h:132
@ MBEDTLS_CIPHER_ARIA_128_CTR
Definition: cipher.h:169
@ MBEDTLS_CIPHER_ARIA_192_CCM
Definition: cipher.h:176
@ MBEDTLS_CIPHER_CAMELLIA_192_GCM
Definition: cipher.h:141
@ MBEDTLS_CIPHER_AES_192_OFB
Definition: cipher.h:179
@ MBEDTLS_CIPHER_AES_256_ECB
Definition: cipher.h:115
@ MBEDTLS_CIPHER_AES_256_CTR
Definition: cipher.h:124
@ MBEDTLS_CIPHER_AES_192_CCM
Definition: cipher.h:155
@ MBEDTLS_CIPHER_AES_128_CFB128
Definition: cipher.h:119
@ MBEDTLS_CIPHER_CAMELLIA_192_CFB128
Definition: cipher.h:135
@ MBEDTLS_CIPHER_CAMELLIA_128_CCM
Definition: cipher.h:157
@ MBEDTLS_CIPHER_AES_128_CTR
Definition: cipher.h:122
@ MBEDTLS_CIPHER_ARIA_192_GCM
Definition: cipher.h:173
@ MBEDTLS_CIPHER_AES_256_XTS
Definition: cipher.h:182
@ MBEDTLS_CIPHER_AES_192_CFB128
Definition: cipher.h:120
@ MBEDTLS_CIPHER_ARIA_256_ECB
Definition: cipher.h:162
@ MBEDTLS_CIPHER_CAMELLIA_256_CCM
Definition: cipher.h:159
@ MBEDTLS_CIPHER_AES_256_GCM
Definition: cipher.h:127
@ MBEDTLS_CIPHER_DES_CBC
Definition: cipher.h:144
@ MBEDTLS_CIPHER_CAMELLIA_128_CFB128
Definition: cipher.h:134
@ MBEDTLS_CIPHER_CAMELLIA_128_CBC
Definition: cipher.h:131
@ MBEDTLS_CIPHER_AES_256_CCM
Definition: cipher.h:156
@ MBEDTLS_CIPHER_CAMELLIA_256_CFB128
Definition: cipher.h:136
@ MBEDTLS_CIPHER_ARIA_192_CTR
Definition: cipher.h:170
@ MBEDTLS_CIPHER_BLOWFISH_CBC
Definition: cipher.h:150
@ MBEDTLS_CIPHER_CAMELLIA_256_ECB
Definition: cipher.h:130
@ MBEDTLS_CIPHER_AES_256_KW
Definition: cipher.h:187
@ MBEDTLS_CIPHER_AES_128_GCM
Definition: cipher.h:125
@ MBEDTLS_CIPHER_CAMELLIA_192_ECB
Definition: cipher.h:129
@ MBEDTLS_CIPHER_AES_256_CFB128
Definition: cipher.h:121
@ MBEDTLS_CIPHER_NONE
Definition: cipher.h:111
@ MBEDTLS_CIPHER_CHACHA20_POLY1305
Definition: cipher.h:184
@ MBEDTLS_CIPHER_CAMELLIA_128_ECB
Definition: cipher.h:128
@ MBEDTLS_CIPHER_AES_192_CBC
Definition: cipher.h:117
@ MBEDTLS_CIPHER_CAMELLIA_192_CCM
Definition: cipher.h:158
@ MBEDTLS_CIPHER_ARIA_128_CCM
Definition: cipher.h:175
@ MBEDTLS_CIPHER_AES_192_CTR
Definition: cipher.h:123
@ MBEDTLS_CIPHER_AES_128_CCM
Definition: cipher.h:154
@ MBEDTLS_CIPHER_DES_EDE_CBC
Definition: cipher.h:146
@ MBEDTLS_CIPHER_NULL
Definition: cipher.h:112
@ MBEDTLS_CIPHER_ARIA_256_CBC
Definition: cipher.h:165
@ MBEDTLS_CIPHER_AES_256_OFB
Definition: cipher.h:180
@ MBEDTLS_CIPHER_ARIA_192_CFB128
Definition: cipher.h:167
@ MBEDTLS_CIPHER_CAMELLIA_128_CTR
Definition: cipher.h:137
@ MBEDTLS_CIPHER_BLOWFISH_ECB
Definition: cipher.h:149
@ MBEDTLS_CIPHER_AES_256_KWP
Definition: cipher.h:190
@ MBEDTLS_CIPHER_AES_256_CBC
Definition: cipher.h:118
@ MBEDTLS_CIPHER_ARC4_128
Definition: cipher.h:153
@ MBEDTLS_CIPHER_CAMELLIA_192_CTR
Definition: cipher.h:138
@ MBEDTLS_CIPHER_AES_128_KW
Definition: cipher.h:185
@ MBEDTLS_CIPHER_AES_192_KW
Definition: cipher.h:186
@ MBEDTLS_CIPHER_AES_192_KWP
Definition: cipher.h:189
@ MBEDTLS_CIPHER_AES_192_ECB
Definition: cipher.h:114
@ MBEDTLS_CIPHER_ARIA_256_GCM
Definition: cipher.h:174
@ MBEDTLS_CIPHER_AES_128_KWP
Definition: cipher.h:188
@ MBEDTLS_CIPHER_DES_EDE3_ECB
Definition: cipher.h:147
@ MBEDTLS_CIPHER_ARIA_128_CBC
Definition: cipher.h:163
@ MBEDTLS_CIPHER_CAMELLIA_256_CTR
Definition: cipher.h:139
@ MBEDTLS_CIPHER_ARIA_128_ECB
Definition: cipher.h:160
@ MBEDTLS_CIPHER_CAMELLIA_256_CBC
Definition: cipher.h:133
@ MBEDTLS_CIPHER_ARIA_256_CCM
Definition: cipher.h:177
@ MBEDTLS_CIPHER_ARIA_128_CFB128
Definition: cipher.h:166
int mbedtls_cipher_setkey(mbedtls_cipher_context_t *ctx, const unsigned char *key, int key_bitlen, const mbedtls_operation_t operation)
This function sets the key to use with the given context.
@ MBEDTLS_KEY_LENGTH_DES
Definition: cipher.h:230
@ MBEDTLS_KEY_LENGTH_NONE
Definition: cipher.h:228
@ MBEDTLS_KEY_LENGTH_DES_EDE
Definition: cipher.h:232
@ MBEDTLS_KEY_LENGTH_DES_EDE3
Definition: cipher.h:234
struct mbedtls_cipher_info_t mbedtls_cipher_info_t
int mbedtls_cipher_crypt(mbedtls_cipher_context_t *ctx, const unsigned char *iv, size_t iv_len, const unsigned char *input, size_t ilen, unsigned char *output, size_t *olen)
The generic all-in-one encryption/decryption function, for all ciphers except AEAD constructs.
const mbedtls_cipher_info_t * mbedtls_cipher_info_from_type(const mbedtls_cipher_type_t cipher_type)
This function retrieves the cipher-information structure associated with the given cipher type.
int mbedtls_cipher_reset(mbedtls_cipher_context_t *ctx)
This function resets the cipher state.
int mbedtls_cipher_auth_decrypt_ext(mbedtls_cipher_context_t *ctx, const unsigned char *iv, size_t iv_len, const unsigned char *ad, size_t ad_len, const unsigned char *input, size_t ilen, unsigned char *output, size_t output_len, size_t *olen, size_t tag_len)
The authenticated encryption (AEAD/NIST_KW) function.
int mbedtls_cipher_set_iv(mbedtls_cipher_context_t *ctx, const unsigned char *iv, size_t iv_len)
This function sets the initialization vector (IV) or nonce.
mbedtls_cipher_padding_t
Definition: cipher.h:211
@ MBEDTLS_PADDING_ZEROS
Definition: cipher.h:215
@ MBEDTLS_PADDING_ONE_AND_ZEROS
Definition: cipher.h:213
@ MBEDTLS_PADDING_PKCS7
Definition: cipher.h:212
@ MBEDTLS_PADDING_ZEROS_AND_LEN
Definition: cipher.h:214
@ MBEDTLS_PADDING_NONE
Definition: cipher.h:216
int mbedtls_cipher_auth_encrypt_ext(mbedtls_cipher_context_t *ctx, const unsigned char *iv, size_t iv_len, const unsigned char *ad, size_t ad_len, const unsigned char *input, size_t ilen, unsigned char *output, size_t output_len, size_t *olen, size_t tag_len)
The authenticated encryption (AEAD/NIST_KW) function.
int mbedtls_cipher_finish(mbedtls_cipher_context_t *ctx, unsigned char *output, size_t *olen)
The generic cipher finalization function. If data still needs to be flushed from an incomplete block,...
static int mbedtls_cipher_get_key_bitlen(const mbedtls_cipher_context_t *ctx)
This function returns the key length of the cipher.
Definition: cipher.h:627
struct mbedtls_cipher_context_t mbedtls_cipher_context_t
const mbedtls_cipher_info_t * mbedtls_cipher_info_from_values(const mbedtls_cipher_id_t cipher_id, int key_bitlen, const mbedtls_cipher_mode_t mode)
This function retrieves the cipher-information structure associated with the given cipher ID,...
void mbedtls_cipher_init(mbedtls_cipher_context_t *ctx)
This function initializes a ctx as NONE.
int MBEDTLS_DEPRECATED mbedtls_cipher_auth_decrypt(mbedtls_cipher_context_t *ctx, const unsigned char *iv, size_t iv_len, const unsigned char *ad, size_t ad_len, const unsigned char *input, size_t ilen, unsigned char *output, size_t *olen, const unsigned char *tag, size_t tag_len)
The generic authenticated decryption (AEAD) function.
int mbedtls_cipher_update_ad(mbedtls_cipher_context_t *ctx, const unsigned char *ad, size_t ad_len)
This function adds additional data for AEAD ciphers. Currently supported with GCM and ChaCha20+Poly13...
int mbedtls_cipher_write_tag(mbedtls_cipher_context_t *ctx, unsigned char *tag, size_t tag_len)
This function writes a tag for AEAD ciphers. Currently supported with GCM and ChaCha20+Poly1305....
static mbedtls_operation_t mbedtls_cipher_get_operation(const mbedtls_cipher_context_t *ctx)
This function returns the operation of the given cipher.
Definition: cipher.h:647
void mbedtls_cipher_free(mbedtls_cipher_context_t *ctx)
This function frees and clears the cipher-specific context of ctx. Freeing ctx itself remains the res...
static int mbedtls_cipher_get_iv_size(const mbedtls_cipher_context_t *ctx)
This function returns the size of the IV or nonce of the cipher, in Bytes.
Definition: cipher.h:563
int mbedtls_cipher_update(mbedtls_cipher_context_t *ctx, const unsigned char *input, size_t ilen, unsigned char *output, size_t *olen)
The generic cipher update function. It encrypts or decrypts using the given cipher context....
static mbedtls_cipher_type_t mbedtls_cipher_get_type(const mbedtls_cipher_context_t *ctx)
This function returns the type of the given cipher.
Definition: cipher.h:586
static unsigned int mbedtls_cipher_get_block_size(const mbedtls_cipher_context_t *ctx)
This function returns the block size of the given cipher.
Definition: cipher.h:522
struct mbedtls_cipher_base_t mbedtls_cipher_base_t
Definition: cipher.h:265
#define MBEDTLS_DEPRECATED
Definition: cipher.h:917
mbedtls_operation_t
Definition: cipher.h:220
@ MBEDTLS_DECRYPT
Definition: cipher.h:222
@ MBEDTLS_OPERATION_NONE
Definition: cipher.h:221
@ MBEDTLS_ENCRYPT
Definition: cipher.h:223
const mbedtls_cipher_info_t * mbedtls_cipher_info_from_string(const char *cipher_name)
This function retrieves the cipher-information structure associated with the given cipher name.
const int * mbedtls_cipher_list(void)
This function retrieves the list of ciphers supported by the generic cipher module.
static const char * mbedtls_cipher_get_name(const mbedtls_cipher_context_t *ctx)
This function returns the name of the given cipher as a string.
Definition: cipher.h:607
#define MBEDTLS_MAX_BLOCK_LENGTH
Definition: cipher.h:247
int MBEDTLS_DEPRECATED mbedtls_cipher_auth_encrypt(mbedtls_cipher_context_t *ctx, const unsigned char *iv, size_t iv_len, const unsigned char *ad, size_t ad_len, const unsigned char *input, size_t ilen, unsigned char *output, size_t *olen, unsigned char *tag, size_t tag_len)
The generic authenticated encryption (AEAD) function.
int mbedtls_cipher_check_tag(mbedtls_cipher_context_t *ctx, const unsigned char *tag, size_t tag_len)
This function checks the tag for AEAD ciphers. Currently supported with GCM and ChaCha20+Poly1305....
static mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode(const mbedtls_cipher_context_t *ctx)
This function returns the mode of operation for the cipher. For example, MBEDTLS_MODE_CBC.
Definition: cipher.h:542
mbedtls_cipher_mode_t
Definition: cipher.h:194
@ MBEDTLS_MODE_ECB
Definition: cipher.h:196
@ MBEDTLS_MODE_CCM
Definition: cipher.h:203
@ MBEDTLS_MODE_STREAM
Definition: cipher.h:202
@ MBEDTLS_MODE_NONE
Definition: cipher.h:195
@ MBEDTLS_MODE_CFB
Definition: cipher.h:198
@ MBEDTLS_MODE_CTR
Definition: cipher.h:200
@ MBEDTLS_MODE_GCM
Definition: cipher.h:201
@ MBEDTLS_MODE_KW
Definition: cipher.h:206
@ MBEDTLS_MODE_CBC
Definition: cipher.h:197
@ MBEDTLS_MODE_OFB
Definition: cipher.h:199
@ MBEDTLS_MODE_KWP
Definition: cipher.h:207
@ MBEDTLS_MODE_CHACHAPOLY
Definition: cipher.h:205
@ MBEDTLS_MODE_XTS
Definition: cipher.h:204
#define MBEDTLS_MAX_IV_LENGTH
Definition: cipher.h:241
mbedtls_cipher_id_t
Supported cipher types.
Definition: cipher.h:90
@ MBEDTLS_CIPHER_ID_3DES
Definition: cipher.h:95
@ MBEDTLS_CIPHER_ID_CAMELLIA
Definition: cipher.h:96
@ MBEDTLS_CIPHER_ID_DES
Definition: cipher.h:94
@ MBEDTLS_CIPHER_ID_ARC4
Definition: cipher.h:98
@ MBEDTLS_CIPHER_ID_NULL
Definition: cipher.h:92
@ MBEDTLS_CIPHER_ID_AES
Definition: cipher.h:93
@ MBEDTLS_CIPHER_ID_ARIA
Definition: cipher.h:99
@ MBEDTLS_CIPHER_ID_NONE
Definition: cipher.h:91
@ MBEDTLS_CIPHER_ID_CHACHA20
Definition: cipher.h:100
@ MBEDTLS_CIPHER_ID_BLOWFISH
Definition: cipher.h:97
int mbedtls_cipher_set_padding_mode(mbedtls_cipher_context_t *ctx, mbedtls_cipher_padding_t mode)
This function sets the padding mode, for cipher modes that use padding.
Configuration options (set of defines)
Common and shared functions used by multiple modules in the Mbed TLS library.
#define MBEDTLS_INTERNAL_VALIDATE_RET(cond, ret)
mbedtls_operation_t operation
Definition: cipher.h:327
unsigned char iv[MBEDTLS_MAX_IV_LENGTH]
Definition: cipher.h:345
void(* add_padding)(unsigned char *output, size_t olen, size_t data_len)
Definition: cipher.h:333
unsigned char unprocessed_data[MBEDTLS_MAX_BLOCK_LENGTH]
Definition: cipher.h:338
int(* get_padding)(unsigned char *input, size_t ilen, size_t *data_len)
Definition: cipher.h:334
const mbedtls_cipher_info_t * cipher_info
Definition: cipher.h:319
unsigned int key_bitlen
Definition: cipher.h:289
unsigned int iv_size
Definition: cipher.h:298
mbedtls_cipher_type_t type
Definition: cipher.h:280
mbedtls_cipher_mode_t mode
Definition: cipher.h:283
unsigned int block_size
Definition: cipher.h:307
const char * name
Definition: cipher.h:292
const mbedtls_cipher_base_t * base
Definition: cipher.h:310