]>
Commit | Line | Data |
---|---|---|
d02b48c6 | 1 | /* crypto/des/des_enc.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
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. | |
40720ce3 | 8 | * |
d02b48c6 RE |
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). | |
40720ce3 | 15 | * |
d02b48c6 RE |
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. | |
40720ce3 | 22 | * |
d02b48c6 RE |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
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 :-). | |
40720ce3 | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40720ce3 | 40 | * |
d02b48c6 RE |
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 | |
51 | * SUCH DAMAGE. | |
40720ce3 | 52 | * |
d02b48c6 RE |
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.] | |
57 | */ | |
58 | ||
59 | #include "des_locl.h" | |
60 | ||
c2e4f17c | 61 | void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc) |
40720ce3 MC |
62 | { |
63 | register DES_LONG l, r, t, u; | |
d02b48c6 | 64 | #ifdef DES_PTR |
40720ce3 | 65 | register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans; |
d02b48c6 RE |
66 | #endif |
67 | #ifndef DES_UNROLL | |
40720ce3 | 68 | register int i; |
d02b48c6 | 69 | #endif |
40720ce3 MC |
70 | register DES_LONG *s; |
71 | ||
72 | r = data[0]; | |
73 | l = data[1]; | |
74 | ||
75 | IP(r, l); | |
76 | /* | |
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. | |
82 | */ | |
83 | /* clear the top bits on machines with 8byte longs */ | |
84 | /* shift left by 2 */ | |
85 | r = ROTATE(r, 29) & 0xffffffffL; | |
86 | l = ROTATE(l, 29) & 0xffffffffL; | |
87 | ||
88 | s = ks->ks->deslong; | |
89 | /* | |
90 | * I don't know if it is worth the effort of loop unrolling the inner | |
91 | * loop | |
92 | */ | |
93 | if (enc) { | |
d02b48c6 | 94 | #ifdef DES_UNROLL |
40720ce3 MC |
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 */ | |
d02b48c6 | 111 | #else |
40720ce3 MC |
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 */ | |
117 | } | |
d02b48c6 | 118 | #endif |
40720ce3 | 119 | } else { |
d02b48c6 | 120 | #ifdef DES_UNROLL |
40720ce3 MC |
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 */ | |
d02b48c6 | 137 | #else |
40720ce3 MC |
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 */ | |
143 | } | |
d02b48c6 | 144 | #endif |
40720ce3 | 145 | } |
d02b48c6 | 146 | |
40720ce3 MC |
147 | /* rotate and clear the top bits on machines with 8byte longs */ |
148 | l = ROTATE(l, 3) & 0xffffffffL; | |
149 | r = ROTATE(r, 3) & 0xffffffffL; | |
d02b48c6 | 150 | |
40720ce3 MC |
151 | FP(r, l); |
152 | data[0] = l; | |
153 | data[1] = r; | |
154 | l = r = t = u = 0; | |
155 | } | |
d02b48c6 | 156 | |
c2e4f17c | 157 | void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc) |
40720ce3 MC |
158 | { |
159 | register DES_LONG l, r, t, u; | |
d02b48c6 | 160 | #ifdef DES_PTR |
40720ce3 | 161 | register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans; |
d02b48c6 RE |
162 | #endif |
163 | #ifndef DES_UNROLL | |
40720ce3 | 164 | register int i; |
d02b48c6 | 165 | #endif |
40720ce3 MC |
166 | register DES_LONG *s; |
167 | ||
168 | r = data[0]; | |
169 | l = data[1]; | |
170 | ||
171 | /* | |
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. | |
177 | */ | |
178 | /* clear the top bits on machines with 8byte longs */ | |
179 | r = ROTATE(r, 29) & 0xffffffffL; | |
180 | l = ROTATE(l, 29) & 0xffffffffL; | |
181 | ||
182 | s = ks->ks->deslong; | |
183 | /* | |
184 | * I don't know if it is worth the effort of loop unrolling the inner | |
185 | * loop | |
186 | */ | |
187 | if (enc) { | |
d02b48c6 | 188 | #ifdef DES_UNROLL |
40720ce3 MC |
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 */ | |
d02b48c6 | 205 | #else |
40720ce3 MC |
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 */ | |
211 | } | |
d02b48c6 | 212 | #endif |
40720ce3 | 213 | } else { |
d02b48c6 | 214 | #ifdef DES_UNROLL |
40720ce3 MC |
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 */ | |
d02b48c6 | 231 | #else |
40720ce3 MC |
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 */ | |
237 | } | |
d02b48c6 | 238 | #endif |
40720ce3 MC |
239 | } |
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; | |
243 | l = r = t = u = 0; | |
244 | } | |
d02b48c6 | 245 | |
c2e4f17c | 246 | void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, |
40720ce3 MC |
247 | DES_key_schedule *ks2, DES_key_schedule *ks3) |
248 | { | |
249 | register DES_LONG l, r; | |
250 | ||
251 | l = data[0]; | |
252 | r = data[1]; | |
253 | IP(l, r); | |
254 | data[0] = l; | |
255 | data[1] = 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); | |
259 | l = data[0]; | |
260 | r = data[1]; | |
261 | FP(r, l); | |
262 | data[0] = l; | |
263 | data[1] = r; | |
264 | } | |
d02b48c6 | 265 | |
c2e4f17c | 266 | void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, |
40720ce3 MC |
267 | DES_key_schedule *ks2, DES_key_schedule *ks3) |
268 | { | |
269 | register DES_LONG l, r; | |
270 | ||
271 | l = data[0]; | |
272 | r = data[1]; | |
273 | IP(l, r); | |
274 | data[0] = l; | |
275 | data[1] = 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); | |
279 | l = data[0]; | |
280 | r = data[1]; | |
281 | FP(r, l); | |
282 | data[0] = l; | |
283 | data[1] = r; | |
284 | } | |
d02b48c6 | 285 | |
58964a49 RE |
286 | #ifndef DES_DEFAULT_OPTIONS |
287 | ||
40720ce3 | 288 | # if !defined(OPENSSL_FIPS_DES_ASM) |
dee4d129 | 289 | |
40720ce3 MC |
290 | # undef CBC_ENC_C__DONT_UPDATE_IV |
291 | # include "ncbc_enc.c" /* DES_ncbc_encrypt */ | |
58964a49 | 292 | |
c2e4f17c | 293 | void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output, |
40720ce3 MC |
294 | long length, DES_key_schedule *ks1, |
295 | DES_key_schedule *ks2, DES_key_schedule *ks3, | |
296 | DES_cblock *ivec, int enc) | |
297 | { | |
298 | register DES_LONG tin0, tin1; | |
299 | register DES_LONG tout0, tout1, xor0, xor1; | |
300 | register const unsigned char *in; | |
301 | unsigned char *out; | |
302 | register long l = length; | |
303 | DES_LONG tin[2]; | |
304 | unsigned char *iv; | |
305 | ||
306 | in = input; | |
307 | out = output; | |
308 | iv = &(*ivec)[0]; | |
309 | ||
310 | if (enc) { | |
311 | c2l(iv, tout0); | |
312 | c2l(iv, tout1); | |
313 | for (l -= 8; l >= 0; l -= 8) { | |
314 | c2l(in, tin0); | |
315 | c2l(in, tin1); | |
316 | tin0 ^= tout0; | |
317 | tin1 ^= tout1; | |
318 | ||
319 | tin[0] = tin0; | |
320 | tin[1] = tin1; | |
321 | DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3); | |
322 | tout0 = tin[0]; | |
323 | tout1 = tin[1]; | |
324 | ||
325 | l2c(tout0, out); | |
326 | l2c(tout1, out); | |
327 | } | |
328 | if (l != -8) { | |
329 | c2ln(in, tin0, tin1, l + 8); | |
330 | tin0 ^= tout0; | |
331 | tin1 ^= tout1; | |
332 | ||
333 | tin[0] = tin0; | |
334 | tin[1] = tin1; | |
335 | DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3); | |
336 | tout0 = tin[0]; | |
337 | tout1 = tin[1]; | |
338 | ||
339 | l2c(tout0, out); | |
340 | l2c(tout1, out); | |
341 | } | |
342 | iv = &(*ivec)[0]; | |
343 | l2c(tout0, iv); | |
344 | l2c(tout1, iv); | |
345 | } else { | |
346 | register DES_LONG t0, t1; | |
347 | ||
348 | c2l(iv, xor0); | |
349 | c2l(iv, xor1); | |
350 | for (l -= 8; l >= 0; l -= 8) { | |
351 | c2l(in, tin0); | |
352 | c2l(in, tin1); | |
353 | ||
354 | t0 = tin0; | |
355 | t1 = tin1; | |
356 | ||
357 | tin[0] = tin0; | |
358 | tin[1] = tin1; | |
359 | DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3); | |
360 | tout0 = tin[0]; | |
361 | tout1 = tin[1]; | |
362 | ||
363 | tout0 ^= xor0; | |
364 | tout1 ^= xor1; | |
365 | l2c(tout0, out); | |
366 | l2c(tout1, out); | |
367 | xor0 = t0; | |
368 | xor1 = t1; | |
369 | } | |
370 | if (l != -8) { | |
371 | c2l(in, tin0); | |
372 | c2l(in, tin1); | |
373 | ||
374 | t0 = tin0; | |
375 | t1 = tin1; | |
376 | ||
377 | tin[0] = tin0; | |
378 | tin[1] = tin1; | |
379 | DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3); | |
380 | tout0 = tin[0]; | |
381 | tout1 = tin[1]; | |
382 | ||
383 | tout0 ^= xor0; | |
384 | tout1 ^= xor1; | |
385 | l2cn(tout0, tout1, out, l + 8); | |
386 | xor0 = t0; | |
387 | xor1 = t1; | |
388 | } | |
389 | ||
390 | iv = &(*ivec)[0]; | |
391 | l2c(xor0, iv); | |
392 | l2c(xor1, iv); | |
393 | } | |
394 | tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; | |
395 | tin[0] = tin[1] = 0; | |
396 | } | |
397 | ||
398 | # endif | |
399 | ||
400 | #endif /* DES_DEFAULT_OPTIONS */ |