1 /* $KAME: des.h,v 1.8 2001/09/10 04:03:57 itojun Exp $ */
4 /* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au)
7 * This file is part of an SSL implementation written
8 * by Eric Young (eay@mincom.oz.au).
9 * The implementation was written so as to conform with Netscapes SSL
10 * specification. This library and applications are
11 * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
12 * as long as the following conditions are aheared to.
14 * Copyright remains Eric Young's, and as such any Copyright notices in
15 * the code are not to be removed. If this code is used in a product,
16 * Eric Young should be given attribution as the author of the parts used.
17 * This can be in the form of a textual message at program startup or
18 * in documentation (online or textual) provided with the package.
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
23 * 1. Redistributions of source code must retain the copyright
24 * notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 * notice, this list of conditions and the following disclaimer in the
27 * documentation and/or other materials provided with the distribution.
28 * 3. All advertising materials mentioning features or use of this software
29 * must display the following acknowledgement:
30 * This product includes software developed by Eric Young (eay@mincom.oz.au)
32 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44 * The licence and distribution terms for any publically available version or
45 * derivative of this code cannot be changed. i.e. this code cannot simply be
46 * copied and put under another distribution licence
47 * [including the GNU Public Licence.]
57 /* must be 32bit quantity */
58 #define DES_LONG uint32_t
60 typedef unsigned char des_cblock[8];
61 typedef struct des_ks_struct
65 /* make sure things are correct size on machines with
70 } des_key_schedule[16];
72 #define DES_KEY_SZ (sizeof(des_cblock))
73 #define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
78 #define DES_CBC_MODE 0
79 #define DES_PCBC_MODE 1
81 extern int des_check_key; /* defaults to false */
83 char *des_options(void);
84 void des_ecb_encrypt(unsigned char *, unsigned char *, des_key_schedule, int);
86 void des_encrypt1(DES_LONG *, des_key_schedule, int);
87 void des_encrypt2(DES_LONG *, des_key_schedule, int);
88 void des_encrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
90 void des_decrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
93 void des_ecb3_encrypt(unsigned char *, unsigned char *, des_key_schedule,
94 des_key_schedule, des_key_schedule, int);
96 void des_set_odd_parity(unsigned char *);
97 void des_fixup_key_parity(unsigned char *);
98 int des_is_weak_key(const unsigned char *);
99 int des_set_key(const unsigned char *, des_key_schedule);
100 int des_key_sched(const unsigned char *, des_key_schedule);
101 int des_set_key_checked(const unsigned char *, des_key_schedule);
102 void des_set_key_unchecked(const unsigned char *, des_key_schedule);
103 int des_check_key_parity(const unsigned char *);