aes128_cmac.h

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/*
 * Copyright (C) 2016 Fundación Inria Chile
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <stdio.h>
#include "crypto/ciphers.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define AES128_CMAC_BLOCK_SIZE 16

typedef struct {
    cipher_t aes128_ctx;
    uint8_t X[AES128_CMAC_BLOCK_SIZE];
    uint8_t M_last[AES128_CMAC_BLOCK_SIZE];
    uint32_t M_n;
} aes128_cmac_context_t;

int aes128_cmac_init(aes128_cmac_context_t *ctx,
                     const uint8_t *key, uint8_t key_size);

void aes128_cmac_update(aes128_cmac_context_t *ctx,
                        const void *data, size_t len);

void aes128_cmac_final(aes128_cmac_context_t *ctx, void *digest);
 
#ifdef __cplusplus
}
#endif