mbed TLS v2.7.6
cmac.h
Go to the documentation of this file.
1 
7 /*
8  * Copyright (C) 2015-2018, Arm Limited (or its affiliates), All Rights Reserved
9  * SPDX-License-Identifier: Apache-2.0
10  *
11  * Licensed under the Apache License, Version 2.0 (the "License"); you may
12  * not use this file except in compliance with the License.
13  * You may obtain a copy of the License at
14  *
15  * http://www.apache.org/licenses/LICENSE-2.0
16  *
17  * Unless required by applicable law or agreed to in writing, software
18  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
19  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20  * See the License for the specific language governing permissions and
21  * limitations under the License.
22  *
23  * This file is part of Mbed TLS (https://tls.mbed.org)
24  */
25 
26 #ifndef MBEDTLS_CMAC_H
27 #define MBEDTLS_CMAC_H
28 
29 #include "cipher.h"
30 
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34 
35 #define MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED -0x007A
37 #define MBEDTLS_AES_BLOCK_SIZE 16
38 #define MBEDTLS_DES3_BLOCK_SIZE 8
39 
40 #if defined(MBEDTLS_AES_C)
41 #define MBEDTLS_CIPHER_BLKSIZE_MAX 16 /* The longest block used by CMAC is that of AES. */
42 #else
43 #define MBEDTLS_CIPHER_BLKSIZE_MAX 8 /* The longest block used by CMAC is that of 3DES. */
44 #endif
45 
46 #if !defined(MBEDTLS_CMAC_ALT)
47 
52 {
55 
59 
62 };
63 
82  const unsigned char *key, size_t keybits );
83 
100  const unsigned char *input, size_t ilen );
101 
117  unsigned char *output );
118 
133 
155 int mbedtls_cipher_cmac( const mbedtls_cipher_info_t *cipher_info,
156  const unsigned char *key, size_t keylen,
157  const unsigned char *input, size_t ilen,
158  unsigned char *output );
159 
160 #if defined(MBEDTLS_AES_C)
161 
178 int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_len,
179  const unsigned char *input, size_t in_len,
180  unsigned char output[16] );
181 #endif /* MBEDTLS_AES_C */
182 
183 #ifdef __cplusplus
184 }
185 #endif
186 
187 #else /* !MBEDTLS_CMAC_ALT */
188 #include "cmac_alt.h"
189 #endif /* !MBEDTLS_CMAC_ALT */
190 
191 #ifdef __cplusplus
192 extern "C" {
193 #endif
194 
195 #if defined(MBEDTLS_SELF_TEST) && ( defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C) )
196 
201 int mbedtls_cmac_self_test( int verbose );
202 #endif /* MBEDTLS_SELF_TEST && ( MBEDTLS_AES_C || MBEDTLS_DES_C ) */
203 
204 #ifdef __cplusplus
205 }
206 #endif
207 
208 #endif /* MBEDTLS_CMAC_H */
#define MBEDTLS_CIPHER_BLKSIZE_MAX
Definition: cmac.h:41
int mbedtls_cipher_cmac_reset(mbedtls_cipher_context_t *ctx)
This function prepares the authentication of another message with the same key as the previous CMAC o...
int mbedtls_cipher_cmac_starts(mbedtls_cipher_context_t *ctx, const unsigned char *key, size_t keybits)
This function sets the CMAC key, and prepares to authenticate the input data. Must be called with an ...
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...
unsigned char state[MBEDTLS_CIPHER_BLKSIZE_MAX]
Definition: cmac.h:54
The generic cipher wrapper.
unsigned char unprocessed_block[MBEDTLS_CIPHER_BLKSIZE_MAX]
Definition: cmac.h:58
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...
size_t unprocessed_len
Definition: cmac.h:61
int mbedtls_cipher_cmac_finish(mbedtls_cipher_context_t *ctx, unsigned char *output)
This function finishes the CMAC operation, and writes the result to the output buffer.
int mbedtls_cmac_self_test(int verbose)
The CMAC checkup routine.
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.