/*
 * Copyright (C) 2015 Freie Universität 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;
}