AES.c

/**
 * AES.c
 *
 * This file is part of IRMAcard.
 *
 * IRMAcard is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * IRMAcard is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with IRMAcard. If not, see <http://www.gnu.org/licenses/>.
 *
 * Copyright (C) May 2013 - 2013.
 *   Pim Vullers <pim@cs.ru.nl>, Radboud University Nijmegen.
 */

#include "AES.h"

void AES_CBC_sign(unsigned int message_bytes, const unsigned char *message, unsigned char *signature, unsigned int key_bytes, const unsigned char *key, const unsigned char *iv) {
  unsigned char i;
    
  AES_CBC_encrypt(AES_BLOCK_BYTES, message, signature, key_bytes, key, iv);
  for (i = 1; i < message_bytes / AES_BLOCK_BYTES; i++) {
    AES_CBC_encrypt(AES_BLOCK_BYTES, message + i*AES_BLOCK_BYTES, signature, key_bytes, key, signature);
  }
}

void AES_CMAC_sign(unsigned int message_bytes, const unsigned char *message, unsigned char *signature, unsigned int key_bytes, const unsigned char *key, const unsigned char *iv) {
  unsigned char i;

  AES_CBC_encrypt(AES_BLOCK_BYTES, message, signature, key_bytes, key, iv);
  for (i = 1; i < message_bytes / AES_BLOCK_BYTES; i++) {
    AES_CBC_encrypt(AES_BLOCK_BYTES, message + i*AES_BLOCK_BYTES, signature, key_bytes, key, signature);
  }
}