/usr/include/nettle/des-compat.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | /* des-compat.h
*
* The des block cipher, libdes/openssl-style interface.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001 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.
*/
#ifndef NETTLE_DES_COMPAT_H_INCLUDED
#define NETTLE_DES_COMPAT_H_INCLUDED
/* According to Assar, des_set_key, des_set_key_odd_parity,
* des_is_weak_key, plus the encryption functions (des_*_encrypt and
* des_cbc_cksum) would be a pretty useful subset. */
/* NOTE: This is quite experimental, and not all functions are
* implemented. Contributions, in particular test cases are welcome. */
#include "des.h"
#ifdef __cplusplus
extern "C" {
#endif
/* We use some name mangling, to avoid collisions with either other
* nettle functions or with libcrypto. */
#define des_ecb3_encrypt nettle_openssl_des_ecb3_encrypt
#define des_cbc_cksum nettle_openssl_des_cbc_cksum
#define des_ncbc_encrypt nettle_openssl_des_ncbc_encrypt
#define des_cbc_encrypt nettle_openssl_des_cbc_encrypt
#define des_ecb_encrypt nettle_openssl_des_ecb_encrypt
#define des_ede3_cbc_encrypt nettle_openssl_des_ede3_cbc_encrypt
#define des_set_odd_parity nettle_openssl_des_set_odd_parity
#define des_check_key nettle_openssl_des_check_key
#define des_key_sched nettle_openssl_des_key_sched
#define des_is_weak_key nettle_openssl_des_is_weak_key
/* An extra alias */
#undef des_set_key
#define des_set_key nettle_openssl_des_key_sched
enum { DES_DECRYPT = 0, DES_ENCRYPT = 1 };
/* Types */
typedef uint32_t DES_LONG;
/* Note: Typedef:ed arrays should be avoided, but they're used here
* for compatibility. */
typedef struct des_ctx des_key_schedule[1];
typedef uint8_t des_cblock[DES_BLOCK_SIZE];
/* Note: The proper definition,
typedef const uint8_t const_des_cblock[DES_BLOCK_SIZE];
would have worked, *if* all the prototypes had used arguments like
foo(const_des_cblock src, des_cblock dst), letting argument arrays
"decay" into pointers of type uint8_t * and const uint8_t *.
But since openssl's prototypes use *pointers* const_des_cblock *src,
des_cblock *dst, this ends up in type conflicts, and the workaround
is to not use const at all.
*/
#define const_des_cblock des_cblock
/* Aliases */
#define des_ecb2_encrypt(i,o,k1,k2,e) \
des_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
#define des_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
des_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
/* Global flag */
extern int des_check_key;
/* Prototypes */
/* Typing is a little confusing. Since both des_cblock and
des_key_schedule are typedef:ed arrays, it automatically decay to
a pointers.
But the functions are declared taking pointers to des_cblock, i.e.
pointers to arrays. And on the other hand, they take plain
des_key_schedule arguments, which is equivalent to pointers to
struct des_ctx. */
void
des_ecb3_encrypt(const_des_cblock *src, des_cblock *dst,
des_key_schedule k1,
des_key_schedule k2,
des_key_schedule k3, int enc);
/* des_cbc_cksum in libdes returns a 32 bit integer, representing the
* latter half of the output block, using little endian byte order. */
uint32_t
des_cbc_cksum(const uint8_t *src, des_cblock *dst,
long length, des_key_schedule ctx,
const_des_cblock *iv);
/* NOTE: Doesn't update iv. */
void
des_cbc_encrypt(const_des_cblock *src, des_cblock *dst, long length,
des_key_schedule ctx, const_des_cblock *iv,
int enc);
/* Similar, but updates iv. */
void
des_ncbc_encrypt(const_des_cblock *src, des_cblock *dst, long length,
des_key_schedule ctx, des_cblock *iv,
int enc);
void
des_ecb_encrypt(const_des_cblock *src, des_cblock *dst,
des_key_schedule ctx, int enc);
void
des_ede3_cbc_encrypt(const_des_cblock *src, des_cblock *dst, long length,
des_key_schedule k1,
des_key_schedule k2,
des_key_schedule k3,
des_cblock *iv,
int enc);
int
des_set_odd_parity(des_cblock *key);
int
des_key_sched(const_des_cblock *key, des_key_schedule ctx);
int
des_is_weak_key(const_des_cblock *key);
#ifdef __cplusplus
}
#endif
#endif /* NETTLE_DES_COMPAT_H_INCLUDED */
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