1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/* $OpenBSD: ecb_enc.c,v 1.2 2002/10/27 13:24:26 miod Exp $ */
/* lib/des/ecb_enc.c */
/* Copyright (C) 1995 Eric Young (eay@mincom.oz.au)
* All rights reserved.
*
* This file is part of an SSL implementation written
* by Eric Young (eay@mincom.oz.au).
* The implementation was written so as to conform with Netscapes SSL
* specification. This library and applications are
* FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
* as long as the following conditions are aheared to.
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed. If this code is used in a product,
* Eric Young should be given attribution as the author of the parts used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Eric Young (eay@mincom.oz.au)
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include "des_locl.h"
#include "spr.h"
const char *DES_version="libdes v 3.21 - 95/11/21 - eay";
void des_ecb_encrypt(input, output, ks, encrypt)
des_cblock (*input);
des_cblock (*output);
des_key_schedule ks;
int encrypt;
{
register u_int32_t l0,l1;
register unsigned char *in,*out;
u_int32_t ll[2];
in=(unsigned char *)input;
out=(unsigned char *)output;
c2l(in,l0); ll[0]=l0;
c2l(in,l1); ll[1]=l1;
des_encrypt(ll,ks,encrypt);
l0=ll[0]; l2c(l0,out);
l1=ll[1]; l2c(l1,out);
l0=l1=ll[0]=ll[1]=0;
}
void des_encrypt(data, ks, encrypt)
u_int32_t *data;
des_key_schedule ks;
int encrypt;
{
register u_int32_t l,r,t,u;
#ifdef DES_USE_PTR
register unsigned char *des_SP=(unsigned char *)des_SPtrans;
#endif
#ifdef MSDOS
union fudge {
u_int32_t l;
unsigned short s[2];
unsigned char c[4];
} U,T;
#endif
register int i;
register u_int32_t *s;
u=data[0];
r=data[1];
IP(u,r);
/* Things have been modified so that the initial rotate is
* done outside the loop. This required the
* des_SPtrans values in sp.h to be rotated 1 bit to the right.
* One perl script later and things have a 5% speed up on a sparc2.
* Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
* for pointing this out. */
l=(r<<1)|(r>>31);
r=(u<<1)|(u>>31);
/* clear the top bits on machines with 8byte longs */
l&=0xffffffffL;
r&=0xffffffffL;
s=(u_int32_t *)ks;
/* I don't know if it is worth the effort of loop unrolling the
* inner loop */
if (encrypt)
{
for (i=0; i<32; i+=4)
{
D_ENCRYPT(l,r,i+0); /* 1 */
D_ENCRYPT(r,l,i+2); /* 2 */
}
}
else
{
for (i=30; i>0; i-=4)
{
D_ENCRYPT(l,r,i-0); /* 16 */
D_ENCRYPT(r,l,i-2); /* 15 */
}
}
l=(l>>1)|(l<<31);
r=(r>>1)|(r<<31);
/* clear the top bits on machines with 8byte longs */
l&=0xffffffffL;
r&=0xffffffffL;
FP(r,l);
data[0]=l;
data[1]=r;
l=r=t=u=0;
}
void des_encrypt2(data, ks, encrypt)
u_int32_t *data;
des_key_schedule ks;
int encrypt;
{
register u_int32_t l,r,t,u;
#ifdef DES_USE_PTR
register unsigned char *des_SP=(unsigned char *)des_SPtrans;
#endif
#ifdef MSDOS
union fudge {
u_int32_t l;
unsigned short s[2];
unsigned char c[4];
} U,T;
#endif
register int i;
register u_int32_t *s;
u=data[0];
r=data[1];
/* Things have been modified so that the initial rotate is
* done outside the loop. This required the
* des_SPtrans values in sp.h to be rotated 1 bit to the right.
* One perl script later and things have a 5% speed up on a sparc2.
* Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
* for pointing this out. */
l=(r<<1)|(r>>31);
r=(u<<1)|(u>>31);
/* clear the top bits on machines with 8byte longs */
l&=0xffffffffL;
r&=0xffffffffL;
s=(u_int32_t *)ks;
/* I don't know if it is worth the effort of loop unrolling the
* inner loop */
if (encrypt)
{
for (i=0; i<32; i+=4)
{
D_ENCRYPT(l,r,i+0); /* 1 */
D_ENCRYPT(r,l,i+2); /* 2 */
}
}
else
{
for (i=30; i>0; i-=4)
{
D_ENCRYPT(l,r,i-0); /* 16 */
D_ENCRYPT(r,l,i-2); /* 15 */
}
}
l=(l>>1)|(l<<31);
r=(r>>1)|(r<<31);
/* clear the top bits on machines with 8byte longs */
l&=0xffffffffL;
r&=0xffffffffL;
data[0]=l;
data[1]=r;
l=r=t=u=0;
}
|
