1 /* crypto/des/des_enc.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
59 #include <openssl/crypto.h>
63 void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
65 register DES_LONG l, r, t, u;
67 register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans;
79 * Things have been modified so that the initial rotate is done outside
80 * the loop. This required the DES_SPtrans values in sp.h to be rotated
81 * 1 bit to the right. One perl script later and things have a 5% speed
82 * up on a sparc2. Thanks to Richard Outerbridge
83 * <71755.204@CompuServe.COM> for pointing this out.
85 /* clear the top bits on machines with 8byte longs */
87 r = ROTATE(r, 29) & 0xffffffffL;
88 l = ROTATE(l, 29) & 0xffffffffL;
92 * I don't know if it is worth the effort of loop unrolling the inner
97 D_ENCRYPT(l, r, 0); /* 1 */
98 D_ENCRYPT(r, l, 2); /* 2 */
99 D_ENCRYPT(l, r, 4); /* 3 */
100 D_ENCRYPT(r, l, 6); /* 4 */
101 D_ENCRYPT(l, r, 8); /* 5 */
102 D_ENCRYPT(r, l, 10); /* 6 */
103 D_ENCRYPT(l, r, 12); /* 7 */
104 D_ENCRYPT(r, l, 14); /* 8 */
105 D_ENCRYPT(l, r, 16); /* 9 */
106 D_ENCRYPT(r, l, 18); /* 10 */
107 D_ENCRYPT(l, r, 20); /* 11 */
108 D_ENCRYPT(r, l, 22); /* 12 */
109 D_ENCRYPT(l, r, 24); /* 13 */
110 D_ENCRYPT(r, l, 26); /* 14 */
111 D_ENCRYPT(l, r, 28); /* 15 */
112 D_ENCRYPT(r, l, 30); /* 16 */
114 for (i = 0; i < 32; i += 4) {
115 D_ENCRYPT(l, r, i + 0); /* 1 */
116 D_ENCRYPT(r, l, i + 2); /* 2 */
121 D_ENCRYPT(l, r, 30); /* 16 */
122 D_ENCRYPT(r, l, 28); /* 15 */
123 D_ENCRYPT(l, r, 26); /* 14 */
124 D_ENCRYPT(r, l, 24); /* 13 */
125 D_ENCRYPT(l, r, 22); /* 12 */
126 D_ENCRYPT(r, l, 20); /* 11 */
127 D_ENCRYPT(l, r, 18); /* 10 */
128 D_ENCRYPT(r, l, 16); /* 9 */
129 D_ENCRYPT(l, r, 14); /* 8 */
130 D_ENCRYPT(r, l, 12); /* 7 */
131 D_ENCRYPT(l, r, 10); /* 6 */
132 D_ENCRYPT(r, l, 8); /* 5 */
133 D_ENCRYPT(l, r, 6); /* 4 */
134 D_ENCRYPT(r, l, 4); /* 3 */
135 D_ENCRYPT(l, r, 2); /* 2 */
136 D_ENCRYPT(r, l, 0); /* 1 */
138 for (i = 30; i > 0; i -= 4) {
139 D_ENCRYPT(l, r, i - 0); /* 16 */
140 D_ENCRYPT(r, l, i - 2); /* 15 */
145 /* rotate and clear the top bits on machines with 8byte longs */
146 l = ROTATE(l, 3) & 0xffffffffL;
147 r = ROTATE(r, 3) & 0xffffffffL;
155 void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
157 register DES_LONG l, r, t, u;
159 register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans;
164 register DES_LONG *s;
170 * Things have been modified so that the initial rotate is done outside
171 * the loop. This required the DES_SPtrans values in sp.h to be rotated
172 * 1 bit to the right. One perl script later and things have a 5% speed
173 * up on a sparc2. Thanks to Richard Outerbridge
174 * <71755.204@CompuServe.COM> for pointing this out.
176 /* clear the top bits on machines with 8byte longs */
177 r = ROTATE(r, 29) & 0xffffffffL;
178 l = ROTATE(l, 29) & 0xffffffffL;
182 * I don't know if it is worth the effort of loop unrolling the inner
187 D_ENCRYPT(l, r, 0); /* 1 */
188 D_ENCRYPT(r, l, 2); /* 2 */
189 D_ENCRYPT(l, r, 4); /* 3 */
190 D_ENCRYPT(r, l, 6); /* 4 */
191 D_ENCRYPT(l, r, 8); /* 5 */
192 D_ENCRYPT(r, l, 10); /* 6 */
193 D_ENCRYPT(l, r, 12); /* 7 */
194 D_ENCRYPT(r, l, 14); /* 8 */
195 D_ENCRYPT(l, r, 16); /* 9 */
196 D_ENCRYPT(r, l, 18); /* 10 */
197 D_ENCRYPT(l, r, 20); /* 11 */
198 D_ENCRYPT(r, l, 22); /* 12 */
199 D_ENCRYPT(l, r, 24); /* 13 */
200 D_ENCRYPT(r, l, 26); /* 14 */
201 D_ENCRYPT(l, r, 28); /* 15 */
202 D_ENCRYPT(r, l, 30); /* 16 */
204 for (i = 0; i < 32; i += 4) {
205 D_ENCRYPT(l, r, i + 0); /* 1 */
206 D_ENCRYPT(r, l, i + 2); /* 2 */
211 D_ENCRYPT(l, r, 30); /* 16 */
212 D_ENCRYPT(r, l, 28); /* 15 */
213 D_ENCRYPT(l, r, 26); /* 14 */
214 D_ENCRYPT(r, l, 24); /* 13 */
215 D_ENCRYPT(l, r, 22); /* 12 */
216 D_ENCRYPT(r, l, 20); /* 11 */
217 D_ENCRYPT(l, r, 18); /* 10 */
218 D_ENCRYPT(r, l, 16); /* 9 */
219 D_ENCRYPT(l, r, 14); /* 8 */
220 D_ENCRYPT(r, l, 12); /* 7 */
221 D_ENCRYPT(l, r, 10); /* 6 */
222 D_ENCRYPT(r, l, 8); /* 5 */
223 D_ENCRYPT(l, r, 6); /* 4 */
224 D_ENCRYPT(r, l, 4); /* 3 */
225 D_ENCRYPT(l, r, 2); /* 2 */
226 D_ENCRYPT(r, l, 0); /* 1 */
228 for (i = 30; i > 0; i -= 4) {
229 D_ENCRYPT(l, r, i - 0); /* 16 */
230 D_ENCRYPT(r, l, i - 2); /* 15 */
234 /* rotate and clear the top bits on machines with 8byte longs */
235 data[0] = ROTATE(l, 3) & 0xffffffffL;
236 data[1] = ROTATE(r, 3) & 0xffffffffL;
240 void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
241 DES_key_schedule *ks2, DES_key_schedule *ks3)
243 register DES_LONG l, r;
250 DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT);
251 DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT);
252 DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT);
260 void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
261 DES_key_schedule *ks2, DES_key_schedule *ks3)
263 register DES_LONG l, r;
270 DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT);
271 DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT);
272 DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT);
280 #ifndef DES_DEFAULT_OPTIONS
282 # undef CBC_ENC_C__DONT_UPDATE_IV
283 # include "ncbc_enc.c" /* DES_ncbc_encrypt */
285 void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,
286 long length, DES_key_schedule *ks1,
287 DES_key_schedule *ks2, DES_key_schedule *ks3,
288 DES_cblock *ivec, int enc)
290 register DES_LONG tin0, tin1;
291 register DES_LONG tout0, tout1, xor0, xor1;
292 register const unsigned char *in;
294 register long l = length;
305 for (l -= 8; l >= 0; l -= 8) {
313 DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
321 c2ln(in, tin0, tin1, l + 8);
327 DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
338 register DES_LONG t0, t1;
342 for (l -= 8; l >= 0; l -= 8) {
351 DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
371 DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
377 l2cn(tout0, tout1, out, l + 8);
386 tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
390 #endif /* DES_DEFAULT_OPTIONS */