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.]
61 void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
63 register DES_LONG l, r, t, u;
65 register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans;
77 * Things have been modified so that the initial rotate is done outside
78 * the loop. This required the DES_SPtrans values in sp.h to be rotated
79 * 1 bit to the right. One perl script later and things have a 5% speed
80 * up on a sparc2. Thanks to Richard Outerbridge
81 * <71755.204@CompuServe.COM> for pointing this out.
83 /* clear the top bits on machines with 8byte longs */
85 r = ROTATE(r, 29) & 0xffffffffL;
86 l = ROTATE(l, 29) & 0xffffffffL;
90 * I don't know if it is worth the effort of loop unrolling the inner
95 D_ENCRYPT(l, r, 0); /* 1 */
96 D_ENCRYPT(r, l, 2); /* 2 */
97 D_ENCRYPT(l, r, 4); /* 3 */
98 D_ENCRYPT(r, l, 6); /* 4 */
99 D_ENCRYPT(l, r, 8); /* 5 */
100 D_ENCRYPT(r, l, 10); /* 6 */
101 D_ENCRYPT(l, r, 12); /* 7 */
102 D_ENCRYPT(r, l, 14); /* 8 */
103 D_ENCRYPT(l, r, 16); /* 9 */
104 D_ENCRYPT(r, l, 18); /* 10 */
105 D_ENCRYPT(l, r, 20); /* 11 */
106 D_ENCRYPT(r, l, 22); /* 12 */
107 D_ENCRYPT(l, r, 24); /* 13 */
108 D_ENCRYPT(r, l, 26); /* 14 */
109 D_ENCRYPT(l, r, 28); /* 15 */
110 D_ENCRYPT(r, l, 30); /* 16 */
112 for (i = 0; i < 32; i += 8) {
113 D_ENCRYPT(l, r, i + 0); /* 1 */
114 D_ENCRYPT(r, l, i + 2); /* 2 */
115 D_ENCRYPT(l, r, i + 4); /* 3 */
116 D_ENCRYPT(r, l, i + 6); /* 4 */
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 -= 8) {
139 D_ENCRYPT(l, r, i - 0); /* 16 */
140 D_ENCRYPT(r, l, i - 2); /* 15 */
141 D_ENCRYPT(l, r, i - 4); /* 14 */
142 D_ENCRYPT(r, l, i - 6); /* 13 */
147 /* rotate and clear the top bits on machines with 8byte longs */
148 l = ROTATE(l, 3) & 0xffffffffL;
149 r = ROTATE(r, 3) & 0xffffffffL;
157 void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
159 register DES_LONG l, r, t, u;
161 register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans;
166 register DES_LONG *s;
172 * Things have been modified so that the initial rotate is done outside
173 * the loop. This required the DES_SPtrans values in sp.h to be rotated
174 * 1 bit to the right. One perl script later and things have a 5% speed
175 * up on a sparc2. Thanks to Richard Outerbridge
176 * <71755.204@CompuServe.COM> for pointing this out.
178 /* clear the top bits on machines with 8byte longs */
179 r = ROTATE(r, 29) & 0xffffffffL;
180 l = ROTATE(l, 29) & 0xffffffffL;
184 * I don't know if it is worth the effort of loop unrolling the inner
189 D_ENCRYPT(l, r, 0); /* 1 */
190 D_ENCRYPT(r, l, 2); /* 2 */
191 D_ENCRYPT(l, r, 4); /* 3 */
192 D_ENCRYPT(r, l, 6); /* 4 */
193 D_ENCRYPT(l, r, 8); /* 5 */
194 D_ENCRYPT(r, l, 10); /* 6 */
195 D_ENCRYPT(l, r, 12); /* 7 */
196 D_ENCRYPT(r, l, 14); /* 8 */
197 D_ENCRYPT(l, r, 16); /* 9 */
198 D_ENCRYPT(r, l, 18); /* 10 */
199 D_ENCRYPT(l, r, 20); /* 11 */
200 D_ENCRYPT(r, l, 22); /* 12 */
201 D_ENCRYPT(l, r, 24); /* 13 */
202 D_ENCRYPT(r, l, 26); /* 14 */
203 D_ENCRYPT(l, r, 28); /* 15 */
204 D_ENCRYPT(r, l, 30); /* 16 */
206 for (i = 0; i < 32; i += 8) {
207 D_ENCRYPT(l, r, i + 0); /* 1 */
208 D_ENCRYPT(r, l, i + 2); /* 2 */
209 D_ENCRYPT(l, r, i + 4); /* 3 */
210 D_ENCRYPT(r, l, i + 6); /* 4 */
215 D_ENCRYPT(l, r, 30); /* 16 */
216 D_ENCRYPT(r, l, 28); /* 15 */
217 D_ENCRYPT(l, r, 26); /* 14 */
218 D_ENCRYPT(r, l, 24); /* 13 */
219 D_ENCRYPT(l, r, 22); /* 12 */
220 D_ENCRYPT(r, l, 20); /* 11 */
221 D_ENCRYPT(l, r, 18); /* 10 */
222 D_ENCRYPT(r, l, 16); /* 9 */
223 D_ENCRYPT(l, r, 14); /* 8 */
224 D_ENCRYPT(r, l, 12); /* 7 */
225 D_ENCRYPT(l, r, 10); /* 6 */
226 D_ENCRYPT(r, l, 8); /* 5 */
227 D_ENCRYPT(l, r, 6); /* 4 */
228 D_ENCRYPT(r, l, 4); /* 3 */
229 D_ENCRYPT(l, r, 2); /* 2 */
230 D_ENCRYPT(r, l, 0); /* 1 */
232 for (i = 30; i > 0; i -= 8) {
233 D_ENCRYPT(l, r, i - 0); /* 16 */
234 D_ENCRYPT(r, l, i - 2); /* 15 */
235 D_ENCRYPT(l, r, i - 4); /* 14 */
236 D_ENCRYPT(r, l, i - 6); /* 13 */
240 /* rotate and clear the top bits on machines with 8byte longs */
241 data[0] = ROTATE(l, 3) & 0xffffffffL;
242 data[1] = ROTATE(r, 3) & 0xffffffffL;
246 void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
247 DES_key_schedule *ks2, DES_key_schedule *ks3)
249 register DES_LONG l, r;
256 DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT);
257 DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT);
258 DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT);
266 void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
267 DES_key_schedule *ks2, DES_key_schedule *ks3)
269 register DES_LONG l, r;
276 DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT);
277 DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT);
278 DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT);
286 #ifndef DES_DEFAULT_OPTIONS
288 # if !defined(OPENSSL_FIPS_DES_ASM)
290 # undef CBC_ENC_C__DONT_UPDATE_IV
291 # include "ncbc_enc.c" /* DES_ncbc_encrypt */
293 void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,
294 long length, DES_key_schedule *ks1,
295 DES_key_schedule *ks2, DES_key_schedule *ks3,
296 DES_cblock *ivec, int enc)
298 register DES_LONG tin0, tin1;
299 register DES_LONG tout0, tout1, xor0, xor1;
300 register const unsigned char *in;
302 register long l = length;
313 for (l -= 8; l >= 0; l -= 8) {
321 DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
329 c2ln(in, tin0, tin1, l + 8);
335 DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
346 register DES_LONG t0, t1;
350 for (l -= 8; l >= 0; l -= 8) {
359 DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
379 DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
385 l2cn(tout0, tout1, out, l + 8);
394 tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
400 #endif /* DES_DEFAULT_OPTIONS */