mirror of
https://github.com/cryb-to/cryb-to.git
synced 2024-11-23 14:15:44 +00:00
bf0016a888
Single-DES is now a special case of triple-DES with all three keys being the same. This is significantly slower than a pure single-DES implementation, but that's fine since nobody should be using it anyway.
69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
/*-
|
|
* Copyright (c) 2015-2016 Dag-Erling Smørgrav
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef CRYB_DES_H_INCLUDED
|
|
#define CRYB_DES_H_INCLUDED
|
|
|
|
#ifndef CRYB_TO
|
|
#include <cryb/to.h>
|
|
#endif
|
|
|
|
#include <cryb/cipher.h>
|
|
|
|
CRYB_BEGIN
|
|
|
|
#define DES_BLOCK_LEN 8
|
|
|
|
#define des_cipher cryb_des56_cipher
|
|
#define des56_cipher cryb_des56_cipher
|
|
#define des112_cipher cryb_des112_cipher
|
|
#define des268_cipher cryb_des168_cipher
|
|
#define des_ctx cryb_des_ctx
|
|
#define des_init cryb_des_init
|
|
#define des_keystream cryb_des_keystream
|
|
#define des_encrypt cryb_des_encrypt
|
|
#define des_decrypt cryb_des_decrypt
|
|
#define des_finish cryb_des_finish
|
|
|
|
extern cipher_algorithm des_cipher;
|
|
|
|
typedef struct {
|
|
uint32_t sk1[32];
|
|
uint32_t sk2[32];
|
|
uint32_t sk3[32];
|
|
} des_ctx;
|
|
|
|
void des_init(des_ctx *, cipher_mode mode, const uint8_t *, size_t);
|
|
size_t des_encrypt(des_ctx *, const void *, uint8_t *, size_t);
|
|
size_t des_decrypt(des_ctx *, const uint8_t *, void *, size_t);
|
|
void des_finish(des_ctx *);
|
|
|
|
CRYB_END
|
|
|
|
#endif
|