Mbed TLS v2.28.7
cmac.h
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1 
9 /*
10  * Copyright The Mbed TLS Contributors
11  * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
12  */
13 
14 #ifndef MBEDTLS_CMAC_H
15 #define MBEDTLS_CMAC_H
16 
17 #if !defined(MBEDTLS_CONFIG_FILE)
18 #include "mbedtls/config.h"
19 #else
20 #include MBEDTLS_CONFIG_FILE
21 #endif
22 
23 #include "mbedtls/cipher.h"
24 
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28 
29 /* MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED is deprecated and should not be used. */
31 #define MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED -0x007A
32 
33 #define MBEDTLS_AES_BLOCK_SIZE 16
34 #define MBEDTLS_DES3_BLOCK_SIZE 8
35 
36 
37 /* Although the CMAC module does not support ARIA or CAMELLIA, we adjust the value of
38  * MBEDTLS_CIPHER_BLKSIZE_MAX to reflect these ciphers.
39  * This is done to avoid confusion, given the general-purpose name of the macro. */
40 #if defined(MBEDTLS_AES_C) || defined(MBEDTLS_ARIA_C) || defined(MBEDTLS_CAMELLIA_C)
41 #define MBEDTLS_CIPHER_BLKSIZE_MAX 16
42 #else
43 #define MBEDTLS_CIPHER_BLKSIZE_MAX 8
44 #endif
45 
46 #if !defined(MBEDTLS_CMAC_ALT)
47 
54 
58 
61 };
62 
63 #else /* !MBEDTLS_CMAC_ALT */
64 #include "cmac_alt.h"
65 #endif /* !MBEDTLS_CMAC_ALT */
66 
98  const unsigned char *key, size_t keybits);
99 
123  const unsigned char *input, size_t ilen);
124 
142  unsigned char *output);
143 
161 
190  const unsigned char *key, size_t keylen,
191  const unsigned char *input, size_t ilen,
192  unsigned char *output);
193 
194 #if defined(MBEDTLS_AES_C)
212 int mbedtls_aes_cmac_prf_128(const unsigned char *key, size_t key_len,
213  const unsigned char *input, size_t in_len,
214  unsigned char output[16]);
215 #endif /* MBEDTLS_AES_C */
216 
217 #if defined(MBEDTLS_SELF_TEST) && (defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C))
231 int mbedtls_cmac_self_test(int verbose);
232 #endif /* MBEDTLS_SELF_TEST && ( MBEDTLS_AES_C || MBEDTLS_DES_C ) */
233 
234 #ifdef __cplusplus
235 }
236 #endif
237 
238 #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:41
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:57
size_t unprocessed_len
Definition: cmac.h:60
unsigned char state[MBEDTLS_CIPHER_BLKSIZE_MAX]
Definition: cmac.h:53