/* bcal_tdes2.c */
/*
 This file is part of the AVR-Crypto-Lib.
 Copyright (C) 2006-2015 Daniel Otte (bg@nerilex.org)

 This program 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.

 This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
/**
 * \file     bcal_tdes.c
 * \email    bg@nerilex.org
 * \author   Daniel Otte 
 * \date     2010-02-02
 * \license  GPLv3 or later
 * 
 */

#include <avr/pgmspace.h>
#include <stdlib.h>
#include <string.h>
#include "blockcipher_descriptor.h"
#include "des.h"
#include "keysize_descriptor.h"

const char tdes2_str[] PROGMEM = "TDES-2";

const uint8_t tdes2_keysize_desc[] PROGMEM = { KS_TYPE_LIST, 1, KS_INT(128),
KS_TYPE_TERMINATOR };

static
void tdes_dummy_enc(void *block, void *key)
{
    tdes_enc(block, block, key);
}

static
void tdes_dummy_dec(void *block, void *key)
{
    tdes_dec(block, block, key);
}

static
void tdes2_init(void *key, void *ctx)
{
    memcpy(ctx, key, 16);
    memcpy((uint8_t*) ctx + 16, key, 8);
}

const bcdesc_t tdes2_desc PROGMEM = {
BCDESC_TYPE_BLOCKCIPHER,
BC_INIT_TYPE_1,
        tdes2_str,
        24,
        64,
        { (void_fpt) tdes2_init },
        { (void_fpt) tdes_dummy_enc },
        { (void_fpt) tdes_dummy_dec },
        (bc_free_fpt) NULL,
        tdes2_keysize_desc
};