aes128_cmac.h
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1 /*
2  * Copyright (C) 2016 Fundación Inria Chile
3  *
4  * This file is subject to the terms and conditions of the GNU Lesser
5  * General Public License v2.1. See the file LICENSE in the top level
6  * directory for more details.
7  */
8 
22 #ifndef HASHES_AES128_CMAC_H
23 #define HASHES_AES128_CMAC_H
24 
25 #include <stdio.h>
26 #include "crypto/ciphers.h"
27 
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31 
35 #define AES128_CMAC_BLOCK_SIZE 16
36 
40 typedef struct {
42  cipher_t aes128_ctx;
44  uint8_t X[AES128_CMAC_BLOCK_SIZE];
46  uint8_t M_last[AES128_CMAC_BLOCK_SIZE];
48  uint32_t M_n;
49 } aes128_cmac_context_t;
50 
61 int aes128_cmac_init(aes128_cmac_context_t *ctx,
62  const uint8_t *key, uint8_t key_size);
63 
72 void aes128_cmac_update(aes128_cmac_context_t *ctx,
73  const void *data, size_t len);
74 
81 void aes128_cmac_final(aes128_cmac_context_t *ctx, void *digest);
82 
83 #ifdef __cplusplus
84 }
85 #endif
86 
87 #endif /* HASHES_AES128_CMAC_H */
ciphers.h
Headers for the packet encryption class.
aes128_cmac_init
int aes128_cmac_init(aes128_cmac_context_t *ctx, const uint8_t *key, uint8_t key_size)
Initialize AES128 CMAC message digest context.
aes128_cmac_final
void aes128_cmac_final(aes128_cmac_context_t *ctx, void *digest)
Finalizes the CMAC message digest.
aes128_cmac_update
void aes128_cmac_update(aes128_cmac_context_t *ctx, const void *data, size_t len)
Update the AES128 CMAC context with a portion of the message being hashed.
AES128_CMAC_BLOCK_SIZE
#define AES128_CMAC_BLOCK_SIZE
Length of AES128_CMAC block in bytes.
Definition: aes128_cmac.h:35
stdio.h
stdio wrapper to extend the C libs stdio
aes128_cmac_context_t
AES128_CMAC calculation context.
Definition: aes128_cmac.h:40
aes128_cmac_context_t::M_n
uint32_t M_n
last byte in last block
Definition: aes128_cmac.h:48
aes128_cmac_context_t::aes128_ctx
cipher_t aes128_ctx
AES128 context.
Definition: aes128_cmac.h:42
cipher_t
basic struct for using block ciphers contains the cipher interface and the context
Definition: ciphers.h:119