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/* nettle-internal.c
*
* Things that are used only by the testsuite and benchmark, and
* subject to change.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2002 Niels Möller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* The nettle library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <stdlib.h>
#include "nettle-internal.h"
#include "des.h"
#include "blowfish.h"
/* DES uses a different signature for the key set function.
* And we have to adjust parity. */
static void
des_set_key_hack(void *c, unsigned length, const uint8_t *key)
{
struct des_ctx *ctx = c;
uint8_t pkey[DES_KEY_SIZE];
assert(length == DES_KEY_SIZE);
des_fix_parity(DES_KEY_SIZE, pkey, key);
if (!des_set_key(ctx, pkey))
abort();
}
static void
des3_set_key_hack(void *c, unsigned length, const uint8_t *key)
{
struct des3_ctx *ctx = c;
uint8_t pkey[DES3_KEY_SIZE];
assert(length == DES3_KEY_SIZE);
des_fix_parity(DES3_KEY_SIZE, pkey, key);
if (!des3_set_key(ctx, pkey))
abort();
}
const struct nettle_cipher
nettle_des = {
"des", sizeof(struct des_ctx),
DES_BLOCK_SIZE, DES_KEY_SIZE,
des_set_key_hack, des_set_key_hack,
(nettle_crypt_func) des_encrypt,
(nettle_crypt_func) des_decrypt
};
const struct nettle_cipher
nettle_des3 = {
"des3", sizeof(struct des3_ctx),
DES3_BLOCK_SIZE, DES3_KEY_SIZE,
des3_set_key_hack, des3_set_key_hack,
(nettle_crypt_func) des3_encrypt,
(nettle_crypt_func) des3_decrypt
};
/* NOTE: This is not as nice as one might think, as it will crash if
* we try to encrypt something with a weak key. */
const struct nettle_cipher
nettle_blowfish128 = _NETTLE_CIPHER(blowfish, BLOWFISH, 128);
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