1/*
2 * UFC-crypt: ultra fast crypt(3) implementation
3 *
4 * Copyright (C) 1991-2018 Free Software Foundation, Inc.
5 *
6 * The GNU C Library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * The GNU C Library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with the GNU C Library; if not, see
18 * <http://www.gnu.org/licenses/>.
19 *
20 * @(#)crypt.h 1.5 12/20/96
21 *
22 */
23
24#ifndef _CRYPT_H
25#define _CRYPT_H 1
26
27#include <features.h>
28
29__BEGIN_DECLS
30
31/* Encrypt at most 8 characters from KEY using salt to perturb DES. */
32extern char *crypt (const char *__key, const char *__salt)
33 __THROW __nonnull ((1, 2));
34
35/* Setup DES tables according KEY. */
36extern void setkey (const char *__key) __THROW __nonnull ((1));
37
38/* Encrypt data in BLOCK in place if EDFLAG is zero; otherwise decrypt
39 block in place. */
40extern void encrypt (char *__glibc_block, int __edflag)
41 __THROW __nonnull ((1));
42
43#ifdef __USE_GNU
44/* Reentrant versions of the functions above. The additional argument
45 points to a structure where the results are placed in. */
46struct crypt_data
47 {
48 char keysched[16 * 8];
49 char sb0[32768];
50 char sb1[32768];
51 char sb2[32768];
52 char sb3[32768];
53 /* end-of-aligment-critical-data */
54 char crypt_3_buf[14];
55 char current_salt[2];
56 long int current_saltbits;
57 int direction, initialized;
58 };
59
60extern char *crypt_r (const char *__key, const char *__salt,
61 struct crypt_data * __restrict __data)
62 __THROW __nonnull ((1, 2, 3));
63
64extern void setkey_r (const char *__key,
65 struct crypt_data * __restrict __data)
66 __THROW __nonnull ((1, 2));
67
68extern void encrypt_r (char *__glibc_block, int __edflag,
69 struct crypt_data * __restrict __data)
70 __THROW __nonnull ((1, 3));
71#endif
72
73__END_DECLS
74
75#endif /* crypt.h */
76