1/*	$KAME: des_ecb.c,v 1.6 2001/09/10 04:03:58 itojun Exp $	*/
2
3/* crypto/des/ecb_enc.c */
4
5/* Copyright (C) 1995-1998 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#include <sys/param.h>
52#include <sys/systm.h>
53#include <crypto/des/des_locl.h>
54#include <crypto/des/spr.h>
55
56/* char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay"; */ /* wrong */
57/* char *DES_version="DES part of SSLeay 0.6.4 30-Aug-1996"; */
58
59char *des_options(void)
60        {
61        static int init=1;
62        static char buf[32];
63
64        if (init)
65                {
66                const char *ptr,*unroll,*risc,*size;
67
68#ifdef DES_PTR
69                ptr="ptr";
70#else
71                ptr="idx";
72#endif
73#if defined(DES_RISC1) || defined(DES_RISC2)
74#ifdef DES_RISC1
75                risc="risc1";
76#endif
77#ifdef DES_RISC2
78                risc="risc2";
79#endif
80#else
81                risc="cisc";
82#endif
83#ifdef DES_UNROLL
84                unroll="16";
85#else
86                unroll="4";
87#endif
88                if (sizeof(DES_LONG) != sizeof(long))
89                        size="int";
90                else
91                        size="long";
92                sprintf(buf,"des(%s,%s,%s,%s)",ptr,risc,unroll,size);
93                init=0;
94                }
95        return(buf);
96}
97void des_ecb_encrypt(unsigned char *input, unsigned char *output,
98		     des_key_schedule ks, int enc)
99{
100	register DES_LONG l;
101	DES_LONG ll[2];
102	const unsigned char *in = input;
103	unsigned char *out = output;
104
105	c2l(in,l); ll[0]=l;
106	c2l(in,l); ll[1]=l;
107	des_encrypt1(ll,ks,enc);
108	l=ll[0]; l2c(l,out);
109	l=ll[1]; l2c(l,out);
110	l=ll[0]=ll[1]=0;
111}
112
113void des_ecb3_encrypt(unsigned char *input, unsigned char *output,
114             des_key_schedule ks1, des_key_schedule ks2, des_key_schedule ks3,
115             int enc)
116{
117	register DES_LONG l0,l1;
118	DES_LONG ll[2];
119	const unsigned char *in = input;
120	unsigned char *out = output;
121
122	c2l(in,l0);
123	c2l(in,l1);
124	ll[0]=l0;
125	ll[1]=l1;
126
127	if (enc)
128		des_encrypt3(ll,ks1,ks2,ks3);
129	else
130		des_decrypt3(ll,ks1,ks2,ks3);
131
132	l0=ll[0];
133	l1=ll[1];
134	l2c(l0,out);
135	l2c(l1,out);
136}
137