/usr/include/nettle/des.h is in nettle-dev 2.7.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | /* des.h
*
* The des block cipher. And triple des.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 1992, 2001, Dana L. How, 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02111-1301, USA.
*/
/*
* des - fast & portable DES encryption & decryption.
* Copyright (C) 1992 Dana L. How
* Please see the file `../lib/descore.README' for the complete copyright
* notice.
*
* Slightly edited by Niels Möller, 1997
*/
#ifndef NETTLE_DES_H_INCLUDED
#define NETTLE_DES_H_INCLUDED
#include "nettle-types.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Namespace mangling */
#define des_set_key nettle_des_set_key
#define des_encrypt nettle_des_encrypt
#define des_decrypt nettle_des_decrypt
#define des_check_parity nettle_des_check_parity
#define des_fix_parity nettle_des_fix_parity
#define des3_set_key nettle_des3_set_key
#define des3_encrypt nettle_des3_encrypt
#define des3_decrypt nettle_des3_decrypt
#define DES_KEY_SIZE 8
#define DES_BLOCK_SIZE 8
/* Expanded key length */
#define _DES_KEY_LENGTH 32
struct des_ctx
{
uint32_t key[_DES_KEY_LENGTH];
};
/* Returns 1 for good keys and 0 for weak keys. */
int
des_set_key(struct des_ctx *ctx, const uint8_t *key);
void
des_encrypt(const struct des_ctx *ctx,
unsigned length, uint8_t *dst,
const uint8_t *src);
void
des_decrypt(const struct des_ctx *ctx,
unsigned length, uint8_t *dst,
const uint8_t *src);
int
des_check_parity(unsigned length, const uint8_t *key);
void
des_fix_parity(unsigned length, uint8_t *dst,
const uint8_t *src);
#define DES3_KEY_SIZE 24
#define DES3_BLOCK_SIZE DES_BLOCK_SIZE
struct des3_ctx
{
struct des_ctx des[3];
};
/* Returns 1 for good keys and 0 for weak keys. */
int
des3_set_key(struct des3_ctx *ctx, const uint8_t *key);
void
des3_encrypt(const struct des3_ctx *ctx,
unsigned length, uint8_t *dst,
const uint8_t *src);
void
des3_decrypt(const struct des3_ctx *ctx,
unsigned length, uint8_t *dst,
const uint8_t *src);
#ifdef __cplusplus
}
#endif
#endif /* NETTLE_DES_H_INCLUDED */
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