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
des_options(void)59 char *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 }
des_ecb_encrypt(unsigned char * input,unsigned char * output,des_key_schedule ks,int enc)97 void 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
des_ecb3_encrypt(unsigned char * input,unsigned char * output,des_key_schedule ks1,des_key_schedule ks2,des_key_schedule ks3,int enc)113 void 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