mbed TLS v2.16.9
cipher.h
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1
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.
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53
54#ifndef MBEDTLS_CIPHER_H
55#define MBEDTLS_CIPHER_H
56
57#if !defined(MBEDTLS_CONFIG_FILE)
58#include "config.h"
59#else
60#include MBEDTLS_CONFIG_FILE
61#endif
62
63#include <stddef.h>
64#include "platform_util.h"
65
66#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
67#define MBEDTLS_CIPHER_MODE_AEAD
68#endif
69
70#if defined(MBEDTLS_CIPHER_MODE_CBC)
71#define MBEDTLS_CIPHER_MODE_WITH_PADDING
72#endif
73
74#if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER) || \
75 defined(MBEDTLS_CHACHA20_C)
76#define MBEDTLS_CIPHER_MODE_STREAM
77#endif
78
79#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
80 !defined(inline) && !defined(__cplusplus)
81#define inline __inline
82#endif
83
84#define MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE -0x6080
85#define MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA -0x6100
86#define MBEDTLS_ERR_CIPHER_ALLOC_FAILED -0x6180
87#define MBEDTLS_ERR_CIPHER_INVALID_PADDING -0x6200
88#define MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED -0x6280
89#define MBEDTLS_ERR_CIPHER_AUTH_FAILED -0x6300
90#define MBEDTLS_ERR_CIPHER_INVALID_CONTEXT -0x6380
92/* MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED is deprecated and should not be used. */
93#define MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED -0x6400
95#define MBEDTLS_CIPHER_VARIABLE_IV_LEN 0x01
96#define MBEDTLS_CIPHER_VARIABLE_KEY_LEN 0x02
98#ifdef __cplusplus
99extern "C" {
100#endif
101
109typedef enum {
121
129typedef enum {
205
207typedef enum {
220
222typedef enum {
229
231typedef enum {
236
237enum {
246};
247
249#define MBEDTLS_MAX_IV_LENGTH 16
251#define MBEDTLS_MAX_BLOCK_LENGTH 16
252
257
262
268{
273
276
281 unsigned int key_bitlen;
282
284 const char * name;
285
290 unsigned int iv_size;
291
296 int flags;
297
299 unsigned int block_size;
300
303
305
310{
313
316
321
322#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
326 void (*add_padding)( unsigned char *output, size_t olen, size_t data_len );
327 int (*get_padding)( unsigned char *input, size_t ilen, size_t *data_len );
328#endif
329
332
335
338 unsigned char iv[MBEDTLS_MAX_IV_LENGTH];
339
341 size_t iv_size;
342
345
346#if defined(MBEDTLS_CMAC_C)
348 mbedtls_cmac_context_t *cmac_ctx;
349#endif
351
359const int *mbedtls_cipher_list( void );
360
373
385
401 int key_bitlen,
402 const mbedtls_cipher_mode_t mode );
403
410
421
422
442 const mbedtls_cipher_info_t *cipher_info );
443
452static inline unsigned int mbedtls_cipher_get_block_size(
453 const mbedtls_cipher_context_t *ctx )
454{
455 MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 );
456 if( ctx->cipher_info == NULL )
457 return 0;
458
459 return ctx->cipher_info->block_size;
460}
461
472 const mbedtls_cipher_context_t *ctx )
473{
475 if( ctx->cipher_info == NULL )
476 return MBEDTLS_MODE_NONE;
477
478 return ctx->cipher_info->mode;
479}
480
492 const mbedtls_cipher_context_t *ctx )
493{
494 MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 );
495 if( ctx->cipher_info == NULL )
496 return 0;
497
498 if( ctx->iv_size != 0 )
499 return (int) ctx->iv_size;
500
501 return (int) ctx->cipher_info->iv_size;
502}
503
513 const mbedtls_cipher_context_t *ctx )
514{
516 ctx != NULL, MBEDTLS_CIPHER_NONE );
517 if( ctx->cipher_info == NULL )
518 return MBEDTLS_CIPHER_NONE;
519
520 return ctx->cipher_info->type;
521}
522
532static inline const char *mbedtls_cipher_get_name(
533 const mbedtls_cipher_context_t *ctx )
534{
535 MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 );
536 if( ctx->cipher_info == NULL )
537 return 0;
538
539 return ctx->cipher_info->name;
540}
541
552 const mbedtls_cipher_context_t *ctx )
553{
555 ctx != NULL, MBEDTLS_KEY_LENGTH_NONE );
556 if( ctx->cipher_info == NULL )
558
559 return (int) ctx->cipher_info->key_bitlen;
560}
561
571 const mbedtls_cipher_context_t *ctx )
572{
574 ctx != NULL, MBEDTLS_OPERATION_NONE );
575 if( ctx->cipher_info == NULL )
577
578 return ctx->operation;
579}
580
598 const unsigned char *key,
599 int key_bitlen,
600 const mbedtls_operation_t operation );
601
602#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
621#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
622
642 const unsigned char *iv,
643 size_t iv_len );
644
655
656#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
672 const unsigned char *ad, size_t ad_len );
673#endif /* MBEDTLS_GCM_C || MBEDTLS_CHACHAPOLY_C */
674
709int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *input,
710 size_t ilen, unsigned char *output, size_t *olen );
711
735 unsigned char *output, size_t *olen );
736
737#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
755 unsigned char *tag, size_t tag_len );
756
771 const unsigned char *tag, size_t tag_len );
772#endif /* MBEDTLS_GCM_C || MBEDTLS_CHACHAPOLY_C */
773
808 const unsigned char *iv, size_t iv_len,
809 const unsigned char *input, size_t ilen,
810 unsigned char *output, size_t *olen );
811
812#if defined(MBEDTLS_CIPHER_MODE_AEAD)
844 const unsigned char *iv, size_t iv_len,
845 const unsigned char *ad, size_t ad_len,
846 const unsigned char *input, size_t ilen,
847 unsigned char *output, size_t *olen,
848 unsigned char *tag, size_t tag_len );
849
886 const unsigned char *iv, size_t iv_len,
887 const unsigned char *ad, size_t ad_len,
888 const unsigned char *input, size_t ilen,
889 unsigned char *output, size_t *olen,
890 const unsigned char *tag, size_t tag_len );
891#endif /* MBEDTLS_CIPHER_MODE_AEAD */
892
893#ifdef __cplusplus
894}
895#endif
896
897#endif /* MBEDTLS_CIPHER_H */
int mbedtls_cipher_setup(mbedtls_cipher_context_t *ctx, const mbedtls_cipher_info_t *cipher_info)
This function initializes and fills the cipher-context structure with the appropriate values....
mbedtls_cipher_type_t
Supported {cipher type, cipher mode} pairs.
Definition cipher.h:129
@ MBEDTLS_CIPHER_AES_128_ECB
Definition cipher.h:132
@ MBEDTLS_CIPHER_ARIA_256_CTR
Definition cipher.h:190
@ MBEDTLS_CIPHER_CAMELLIA_128_GCM
Definition cipher.h:159
@ MBEDTLS_CIPHER_AES_128_XTS
Definition cipher.h:200
@ MBEDTLS_CIPHER_CHACHA20
Definition cipher.h:202
@ MBEDTLS_CIPHER_DES_EDE3_CBC
Definition cipher.h:167
@ MBEDTLS_CIPHER_DES_ECB
Definition cipher.h:162
@ MBEDTLS_CIPHER_ARIA_128_GCM
Definition cipher.h:191
@ MBEDTLS_CIPHER_AES_128_CBC
Definition cipher.h:135
@ MBEDTLS_CIPHER_AES_192_GCM
Definition cipher.h:145
@ MBEDTLS_CIPHER_BLOWFISH_CTR
Definition cipher.h:171
@ MBEDTLS_CIPHER_AES_128_OFB
Definition cipher.h:197
@ MBEDTLS_CIPHER_ARIA_192_ECB
Definition cipher.h:180
@ MBEDTLS_CIPHER_CAMELLIA_256_GCM
Definition cipher.h:161
@ MBEDTLS_CIPHER_DES_EDE_ECB
Definition cipher.h:164
@ MBEDTLS_CIPHER_BLOWFISH_CFB64
Definition cipher.h:170
@ MBEDTLS_CIPHER_ARIA_256_CFB128
Definition cipher.h:187
@ MBEDTLS_CIPHER_ARIA_192_CBC
Definition cipher.h:183
@ MBEDTLS_CIPHER_CAMELLIA_192_CBC
Definition cipher.h:151
@ MBEDTLS_CIPHER_ARIA_128_CTR
Definition cipher.h:188
@ MBEDTLS_CIPHER_ARIA_192_CCM
Definition cipher.h:195
@ MBEDTLS_CIPHER_CAMELLIA_192_GCM
Definition cipher.h:160
@ MBEDTLS_CIPHER_AES_192_OFB
Definition cipher.h:198
@ MBEDTLS_CIPHER_AES_256_ECB
Definition cipher.h:134
@ MBEDTLS_CIPHER_AES_256_CTR
Definition cipher.h:143
@ MBEDTLS_CIPHER_AES_192_CCM
Definition cipher.h:174
@ MBEDTLS_CIPHER_AES_128_CFB128
Definition cipher.h:138
@ MBEDTLS_CIPHER_CAMELLIA_192_CFB128
Definition cipher.h:154
@ MBEDTLS_CIPHER_CAMELLIA_128_CCM
Definition cipher.h:176
@ MBEDTLS_CIPHER_AES_128_CTR
Definition cipher.h:141
@ MBEDTLS_CIPHER_ARIA_192_GCM
Definition cipher.h:192
@ MBEDTLS_CIPHER_AES_256_XTS
Definition cipher.h:201
@ MBEDTLS_CIPHER_AES_192_CFB128
Definition cipher.h:139
@ MBEDTLS_CIPHER_ARIA_256_ECB
Definition cipher.h:181
@ MBEDTLS_CIPHER_CAMELLIA_256_CCM
Definition cipher.h:178
@ MBEDTLS_CIPHER_AES_256_GCM
Definition cipher.h:146
@ MBEDTLS_CIPHER_DES_CBC
Definition cipher.h:163
@ MBEDTLS_CIPHER_CAMELLIA_128_CFB128
Definition cipher.h:153
@ MBEDTLS_CIPHER_CAMELLIA_128_CBC
Definition cipher.h:150
@ MBEDTLS_CIPHER_AES_256_CCM
Definition cipher.h:175
@ MBEDTLS_CIPHER_CAMELLIA_256_CFB128
Definition cipher.h:155
@ MBEDTLS_CIPHER_ARIA_192_CTR
Definition cipher.h:189
@ MBEDTLS_CIPHER_BLOWFISH_CBC
Definition cipher.h:169
@ MBEDTLS_CIPHER_CAMELLIA_256_ECB
Definition cipher.h:149
@ MBEDTLS_CIPHER_AES_128_GCM
Definition cipher.h:144
@ MBEDTLS_CIPHER_CAMELLIA_192_ECB
Definition cipher.h:148
@ MBEDTLS_CIPHER_AES_256_CFB128
Definition cipher.h:140
@ MBEDTLS_CIPHER_NONE
Definition cipher.h:130
@ MBEDTLS_CIPHER_CHACHA20_POLY1305
Definition cipher.h:203
@ MBEDTLS_CIPHER_CAMELLIA_128_ECB
Definition cipher.h:147
@ MBEDTLS_CIPHER_AES_192_CBC
Definition cipher.h:136
@ MBEDTLS_CIPHER_CAMELLIA_192_CCM
Definition cipher.h:177
@ MBEDTLS_CIPHER_ARIA_128_CCM
Definition cipher.h:194
@ MBEDTLS_CIPHER_AES_192_CTR
Definition cipher.h:142
@ MBEDTLS_CIPHER_AES_128_CCM
Definition cipher.h:173
@ MBEDTLS_CIPHER_DES_EDE_CBC
Definition cipher.h:165
@ MBEDTLS_CIPHER_NULL
Definition cipher.h:131
@ MBEDTLS_CIPHER_ARIA_256_CBC
Definition cipher.h:184
@ MBEDTLS_CIPHER_AES_256_OFB
Definition cipher.h:199
@ MBEDTLS_CIPHER_ARIA_192_CFB128
Definition cipher.h:186
@ MBEDTLS_CIPHER_CAMELLIA_128_CTR
Definition cipher.h:156
@ MBEDTLS_CIPHER_BLOWFISH_ECB
Definition cipher.h:168
@ MBEDTLS_CIPHER_AES_256_CBC
Definition cipher.h:137
@ MBEDTLS_CIPHER_ARC4_128
Definition cipher.h:172
@ MBEDTLS_CIPHER_CAMELLIA_192_CTR
Definition cipher.h:157
@ MBEDTLS_CIPHER_AES_192_ECB
Definition cipher.h:133
@ MBEDTLS_CIPHER_ARIA_256_GCM
Definition cipher.h:193
@ MBEDTLS_CIPHER_DES_EDE3_ECB
Definition cipher.h:166
@ MBEDTLS_CIPHER_ARIA_128_CBC
Definition cipher.h:182
@ MBEDTLS_CIPHER_CAMELLIA_256_CTR
Definition cipher.h:158
@ MBEDTLS_CIPHER_ARIA_128_ECB
Definition cipher.h:179
@ MBEDTLS_CIPHER_CAMELLIA_256_CBC
Definition cipher.h:152
@ MBEDTLS_CIPHER_ARIA_256_CCM
Definition cipher.h:196
@ MBEDTLS_CIPHER_ARIA_128_CFB128
Definition cipher.h:185
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:241
@ MBEDTLS_KEY_LENGTH_NONE
Definition cipher.h:239
@ MBEDTLS_KEY_LENGTH_DES_EDE
Definition cipher.h:243
@ MBEDTLS_KEY_LENGTH_DES_EDE3
Definition cipher.h:245
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_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:222
@ MBEDTLS_PADDING_ZEROS
Definition cipher.h:226
@ MBEDTLS_PADDING_ONE_AND_ZEROS
Definition cipher.h:224
@ MBEDTLS_PADDING_PKCS7
Definition cipher.h:223
@ MBEDTLS_PADDING_ZEROS_AND_LEN
Definition cipher.h:225
@ MBEDTLS_PADDING_NONE
Definition cipher.h:227
int 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 autenticated encryption (AEAD) 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:551
int 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 autenticated decryption (AEAD) function.
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 cipher_context as NONE.
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:570
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:491
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:512
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:452
struct mbedtls_cipher_base_t mbedtls_cipher_base_t
Definition cipher.h:256
mbedtls_operation_t
Definition cipher.h:231
@ MBEDTLS_DECRYPT
Definition cipher.h:233
@ MBEDTLS_OPERATION_NONE
Definition cipher.h:232
@ MBEDTLS_ENCRYPT
Definition cipher.h:234
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:532
#define MBEDTLS_MAX_BLOCK_LENGTH
Definition cipher.h:251
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:471
mbedtls_cipher_mode_t
Definition cipher.h:207
@ MBEDTLS_MODE_ECB
Definition cipher.h:209
@ MBEDTLS_MODE_CCM
Definition cipher.h:216
@ MBEDTLS_MODE_STREAM
Definition cipher.h:215
@ MBEDTLS_MODE_NONE
Definition cipher.h:208
@ MBEDTLS_MODE_CFB
Definition cipher.h:211
@ MBEDTLS_MODE_CTR
Definition cipher.h:213
@ MBEDTLS_MODE_GCM
Definition cipher.h:214
@ MBEDTLS_MODE_CBC
Definition cipher.h:210
@ MBEDTLS_MODE_OFB
Definition cipher.h:212
@ MBEDTLS_MODE_CHACHAPOLY
Definition cipher.h:218
@ MBEDTLS_MODE_XTS
Definition cipher.h:217
#define MBEDTLS_MAX_IV_LENGTH
Definition cipher.h:249
mbedtls_cipher_id_t
Supported cipher types.
Definition cipher.h:109
@ MBEDTLS_CIPHER_ID_3DES
Definition cipher.h:114
@ MBEDTLS_CIPHER_ID_CAMELLIA
Definition cipher.h:115
@ MBEDTLS_CIPHER_ID_DES
Definition cipher.h:113
@ MBEDTLS_CIPHER_ID_ARC4
Definition cipher.h:117
@ MBEDTLS_CIPHER_ID_NULL
Definition cipher.h:111
@ MBEDTLS_CIPHER_ID_AES
Definition cipher.h:112
@ MBEDTLS_CIPHER_ID_ARIA
Definition cipher.h:118
@ MBEDTLS_CIPHER_ID_NONE
Definition cipher.h:110
@ MBEDTLS_CIPHER_ID_CHACHA20
Definition cipher.h:119
@ MBEDTLS_CIPHER_ID_BLOWFISH
Definition cipher.h:116
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:320
unsigned char iv[MBEDTLS_MAX_IV_LENGTH]
Definition cipher.h:338
void(* add_padding)(unsigned char *output, size_t olen, size_t data_len)
Definition cipher.h:326
unsigned char unprocessed_data[MBEDTLS_MAX_BLOCK_LENGTH]
Definition cipher.h:331
int(* get_padding)(unsigned char *input, size_t ilen, size_t *data_len)
Definition cipher.h:327
const mbedtls_cipher_info_t * cipher_info
Definition cipher.h:312
unsigned int key_bitlen
Definition cipher.h:281
unsigned int iv_size
Definition cipher.h:290
mbedtls_cipher_type_t type
Definition cipher.h:272
mbedtls_cipher_mode_t mode
Definition cipher.h:275
unsigned int block_size
Definition cipher.h:299
const char * name
Definition cipher.h:284
const mbedtls_cipher_base_t * base
Definition cipher.h:302