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 ([email protected])
6 * All rights reserved.
7 *
8 * This file is part of an SSL implementation written
9 * by Eric Young ([email protected]).
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 ([email protected])
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/cdefs.h>
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <crypto/des/des_locl.h>
55 #include <crypto/des/spr.h>
56
57 /* char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay"; */ /* wrong */
58 /* char *DES_version="DES part of SSLeay 0.6.4 30-Aug-1996"; */
59
des_options(void)60 char *des_options(void)
61 {
62 static int init=1;
63 static char buf[32];
64
65 if (init)
66 {
67 const char *ptr,*unroll,*risc,*size;
68
69 #ifdef DES_PTR
70 ptr="ptr";
71 #else
72 ptr="idx";
73 #endif
74 #if defined(DES_RISC1) || defined(DES_RISC2)
75 #ifdef DES_RISC1
76 risc="risc1";
77 #endif
78 #ifdef DES_RISC2
79 risc="risc2";
80 #endif
81 #else
82 risc="cisc";
83 #endif
84 #ifdef DES_UNROLL
85 unroll="16";
86 #else
87 unroll="4";
88 #endif
89 if (sizeof(DES_LONG) != sizeof(long))
90 size="int";
91 else
92 size="long";
93 sprintf(buf,"des(%s,%s,%s,%s)",ptr,risc,unroll,size);
94 init=0;
95 }
96 return(buf);
97 }
des_ecb_encrypt(unsigned char * input,unsigned char * output,des_key_schedule ks,int enc)98 void des_ecb_encrypt(unsigned char *input, unsigned char *output,
99 des_key_schedule ks, int enc)
100 {
101 register DES_LONG l;
102 DES_LONG ll[2];
103 const unsigned char *in = input;
104 unsigned char *out = output;
105
106 c2l(in,l); ll[0]=l;
107 c2l(in,l); ll[1]=l;
108 des_encrypt1(ll,ks,enc);
109 l=ll[0]; l2c(l,out);
110 l=ll[1]; l2c(l,out);
111 l=ll[0]=ll[1]=0;
112 }
113
des_ecb3_encrypt(unsigned char * input,unsigned char * output,des_key_schedule ks1,des_key_schedule ks2,des_key_schedule ks3,int enc)114 void des_ecb3_encrypt(unsigned char *input, unsigned char *output,
115 des_key_schedule ks1, des_key_schedule ks2, des_key_schedule ks3,
116 int enc)
117 {
118 register DES_LONG l0,l1;
119 DES_LONG ll[2];
120 const unsigned char *in = input;
121 unsigned char *out = output;
122
123 c2l(in,l0);
124 c2l(in,l1);
125 ll[0]=l0;
126 ll[1]=l1;
127
128 if (enc)
129 des_encrypt3(ll,ks1,ks2,ks3);
130 else
131 des_decrypt3(ll,ks1,ks2,ks3);
132
133 l0=ll[0];
134 l1=ll[1];
135 l2c(l0,out);
136 l2c(l1,out);
137 }
138