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RIOT/sys/crypto/ciphers.c 1.12 KB
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  /*
   * Copyright (C) 2015 Freie Universitรคt Berlin
   *
   * 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.
   */
  
  /*
   * @ingroup sys_crypto
   * @{
   * @file   ciphers.c
   * @author Nico von Geyso <nico.geyso@fu-berlin.de>
   * @}
   */
  
  #include <string.h>
  #include <stdio.h>
  #include "crypto/ciphers.h"
  
  
  int cipher_init(cipher_t* cipher, cipher_id_t cipher_id, const uint8_t* key,
                  uint8_t key_size)
  {
      if (key_size > cipher_id->max_key_size) {
          return CIPHER_ERR_INVALID_KEY_SIZE;
      }
  
      cipher->interface = cipher_id;
      return cipher->interface->init(&cipher->context, key, key_size);
  
  }
  
  
  int cipher_encrypt(const cipher_t* cipher, const uint8_t* input, uint8_t* output)
  {
      return cipher->interface->encrypt(&cipher->context, input, output);
  }
  
  
  int cipher_decrypt(const cipher_t* cipher, const uint8_t* input, uint8_t* output)
  {
      return cipher->interface->decrypt(&cipher->context, input, output);
  }
  
  
  int cipher_get_block_size(const cipher_t* cipher)
  {
      return cipher->interface->block_size;
  }