Mbed TLS v2.28.5
cmac.h
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1
9/*
10 * Copyright The Mbed TLS Contributors
11 * SPDX-License-Identifier: Apache-2.0
12 *
13 * Licensed under the Apache License, Version 2.0 (the "License"); you may
14 * not use this file except in compliance with the License.
15 * You may obtain a copy of the License at
16 *
17 * http://www.apache.org/licenses/LICENSE-2.0
18 *
19 * Unless required by applicable law or agreed to in writing, software
20 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
21 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 * See the License for the specific language governing permissions and
23 * limitations under the License.
24 */
25
26#ifndef MBEDTLS_CMAC_H
27#define MBEDTLS_CMAC_H
28
29#if !defined(MBEDTLS_CONFIG_FILE)
30#include "mbedtls/config.h"
31#else
32#include MBEDTLS_CONFIG_FILE
33#endif
34
35#include "mbedtls/cipher.h"
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41/* MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED is deprecated and should not be used. */
43#define MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED -0x007A
44
45#define MBEDTLS_AES_BLOCK_SIZE 16
46#define MBEDTLS_DES3_BLOCK_SIZE 8
47
48
49/* Although the CMAC module does not support ARIA or CAMELLIA, we adjust the value of
50 * MBEDTLS_CIPHER_BLKSIZE_MAX to reflect these ciphers.
51 * This is done to avoid confusion, given the general-purpose name of the macro. */
52#if defined(MBEDTLS_AES_C) || defined(MBEDTLS_ARIA_C) || defined(MBEDTLS_CAMELLIA_C)
53#define MBEDTLS_CIPHER_BLKSIZE_MAX 16
54#else
55#define MBEDTLS_CIPHER_BLKSIZE_MAX 8
56#endif
57
58#if !defined(MBEDTLS_CMAC_ALT)
59
66
70
73};
74
75#else /* !MBEDTLS_CMAC_ALT */
76#include "cmac_alt.h"
77#endif /* !MBEDTLS_CMAC_ALT */
78
110 const unsigned char *key, size_t keybits);
111
135 const unsigned char *input, size_t ilen);
136
154 unsigned char *output);
155
173
202 const unsigned char *key, size_t keylen,
203 const unsigned char *input, size_t ilen,
204 unsigned char *output);
205
206#if defined(MBEDTLS_AES_C)
224int mbedtls_aes_cmac_prf_128(const unsigned char *key, size_t key_len,
225 const unsigned char *input, size_t in_len,
226 unsigned char output[16]);
227#endif /* MBEDTLS_AES_C */
228
229#if defined(MBEDTLS_SELF_TEST) && (defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C))
243int mbedtls_cmac_self_test(int verbose);
244#endif /* MBEDTLS_SELF_TEST && ( MBEDTLS_AES_C || MBEDTLS_DES_C ) */
245
246#ifdef __cplusplus
247}
248#endif
249
250#endif /* MBEDTLS_CMAC_H */
This file contains an abstraction interface for use with the cipher primitives provided by the librar...
int mbedtls_cipher_cmac_update(mbedtls_cipher_context_t *ctx, const unsigned char *input, size_t ilen)
This function feeds an input buffer into an ongoing CMAC computation.
int mbedtls_cipher_cmac_reset(mbedtls_cipher_context_t *ctx)
This function starts a new CMAC operation with the same key as the previous one.
int mbedtls_cmac_self_test(int verbose)
The CMAC checkup routine.
int mbedtls_cipher_cmac_finish(mbedtls_cipher_context_t *ctx, unsigned char *output)
This function finishes an ongoing CMAC operation, and writes the result to the output buffer.
#define MBEDTLS_CIPHER_BLKSIZE_MAX
Definition: cmac.h:53
int mbedtls_aes_cmac_prf_128(const unsigned char *key, size_t key_len, const unsigned char *input, size_t in_len, unsigned char output[16])
This function implements the AES-CMAC-PRF-128 pseudorandom function, as defined in RFC-4615: The Adva...
int mbedtls_cipher_cmac_starts(mbedtls_cipher_context_t *ctx, const unsigned char *key, size_t keybits)
This function starts a new CMAC computation by setting the CMAC key, and preparing to authenticate th...
int mbedtls_cipher_cmac(const mbedtls_cipher_info_t *cipher_info, const unsigned char *key, size_t keylen, const unsigned char *input, size_t ilen, unsigned char *output)
This function calculates the full generic CMAC on the input buffer with the provided key.
Configuration options (set of defines)
unsigned char unprocessed_block[MBEDTLS_CIPHER_BLKSIZE_MAX]
Definition: cmac.h:69
size_t unprocessed_len
Definition: cmac.h:72
unsigned char state[MBEDTLS_CIPHER_BLKSIZE_MAX]
Definition: cmac.h:65