1/* $NetBSD: des.h,v 1.8 2009/03/14 14:46:08 dsl Exp $ */
2/* $KAME: des.h,v 1.7 2000/09/18 20:59:21 itojun Exp $ */
3
4/* lib/des/des.h */
5/* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au)
6 * All rights reserved.
7 *
8 * This file is part of an SSL implementation written
9 * by Eric Young (eay@mincom.oz.au).
10 * The implementation was written so as to conform with Netscapes SSL
11 * specification. This library and applications are
12 * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
13 * as long as the following conditions are aheared to.
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed. If this code is used in a product,
17 * Eric Young should be given attribution as the author of the parts used.
18 * This can be in the form of a textual message at program startup or
19 * in documentation (online or textual) provided with the package.
20 *
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
23 * are met:
24 * 1. Redistributions of source code must retain the copyright
25 * notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in the
28 * documentation and/or other materials provided with the distribution.
29 * 3. All advertising materials mentioning features or use of this software
30 * must display the following acknowledgement:
31 * This product includes software developed by Eric Young (eay@mincom.oz.au)
32 *
33 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
36 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * SUCH DAMAGE.
44 *
45 * The licence and distribution terms for any publically available version or
46 * derivative of this code cannot be changed. i.e. this code cannot simply be
47 * copied and put under another distribution licence
48 * [including the GNU Public Licence.]
49 */
50
51#ifndef HEADER_DES_H
52#define HEADER_DES_H
53
54#ifdef __cplusplus
55extern "C" {
56#endif
57
58/* must be 32bit quantity */
59#define DES_LONG u_int32_t
60
61typedef unsigned char des_cblock[8];
62typedef struct des_ks_struct
63 {
64 union {
65 des_cblock cblock;
66 /* make sure things are correct size on machines with
67 * 8 byte longs */
68 DES_LONG deslong[2];
69 } ks;
70 int weak_key;
71} des_key_schedule[16];
72
73#define DES_KEY_SZ (sizeof(des_cblock))
74#define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
75
76#define DES_ENCRYPT 1
77#define DES_DECRYPT 0
78
79#define DES_CBC_MODE 0
80#define DES_PCBC_MODE 1
81
82extern int des_check_key; /* defaults to false */
83
84char *des_options(void);
85void des_ecb_encrypt(des_cblock *, des_cblock *,
86 des_key_schedule, int);
87
88void des_encrypt1(DES_LONG *, des_key_schedule, int);
89void des_encrypt2(DES_LONG *, des_key_schedule, int);
90void des_encrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
91 des_key_schedule);
92void des_decrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
93 des_key_schedule);
94
95void des_ecb3_encrypt(des_cblock *, des_cblock *, des_key_schedule,
96 des_key_schedule, des_key_schedule, int);
97
98void des_ncbc_encrypt(const unsigned char *, unsigned char *, long,
99 des_key_schedule, des_cblock *, int);
100
101void des_ede3_cbc_encrypt(const unsigned char *, unsigned char *, long,
102 des_key_schedule, des_key_schedule,
103 des_key_schedule, des_cblock *, int);
104
105void des_set_odd_parity(des_cblock *);
106void des_fixup_key_parity(des_cblock *);
107int des_is_weak_key(des_cblock *);
108int des_set_key(des_cblock *, des_key_schedule);
109int des_key_sched(des_cblock *, des_key_schedule);
110int des_set_key_checked(des_cblock *, des_key_schedule);
111void des_set_key_unchecked(des_cblock *, des_key_schedule);
112int des_check_key_parity(des_cblock *);
113
114#ifdef __cplusplus
115}
116#endif
117
118#endif
119