1 /* crypto/des/des_enc.c */
2 /* Copyright (C) 1995-1997 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_encrypt(data, ks, enc)
66 register DES_LONG l,r,t,u;
68 register unsigned char *des_SP=(unsigned char *)des_SPtrans;
76 if (hw_des_assist()) {
77 hw_des_encrypt(data, ks, enc);
86 /* Things have been modified so that the initial rotate is
87 * done outside the loop. This required the
88 * des_SPtrans values in sp.h to be rotated 1 bit to the right.
89 * One perl script later and things have a 5% speed up on a sparc2.
90 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
91 * for pointing this out. */
92 /* clear the top bits on machines with 8byte longs */
94 r=ROTATE(r,29)&0xffffffffL;
95 l=ROTATE(l,29)&0xffffffffL;
98 /* I don't know if it is worth the effort of loop unrolling the
103 D_ENCRYPT(l,r, 0); /* 1 */
104 D_ENCRYPT(r,l, 2); /* 2 */
105 D_ENCRYPT(l,r, 4); /* 3 */
106 D_ENCRYPT(r,l, 6); /* 4 */
107 D_ENCRYPT(l,r, 8); /* 5 */
108 D_ENCRYPT(r,l,10); /* 6 */
109 D_ENCRYPT(l,r,12); /* 7 */
110 D_ENCRYPT(r,l,14); /* 8 */
111 D_ENCRYPT(l,r,16); /* 9 */
112 D_ENCRYPT(r,l,18); /* 10 */
113 D_ENCRYPT(l,r,20); /* 11 */
114 D_ENCRYPT(r,l,22); /* 12 */
115 D_ENCRYPT(l,r,24); /* 13 */
116 D_ENCRYPT(r,l,26); /* 14 */
117 D_ENCRYPT(l,r,28); /* 15 */
118 D_ENCRYPT(r,l,30); /* 16 */
120 for (i=0; i<32; i+=8)
122 D_ENCRYPT(l,r,i+0); /* 1 */
123 D_ENCRYPT(r,l,i+2); /* 2 */
124 D_ENCRYPT(l,r,i+4); /* 3 */
125 D_ENCRYPT(r,l,i+6); /* 4 */
132 D_ENCRYPT(l,r,30); /* 16 */
133 D_ENCRYPT(r,l,28); /* 15 */
134 D_ENCRYPT(l,r,26); /* 14 */
135 D_ENCRYPT(r,l,24); /* 13 */
136 D_ENCRYPT(l,r,22); /* 12 */
137 D_ENCRYPT(r,l,20); /* 11 */
138 D_ENCRYPT(l,r,18); /* 10 */
139 D_ENCRYPT(r,l,16); /* 9 */
140 D_ENCRYPT(l,r,14); /* 8 */
141 D_ENCRYPT(r,l,12); /* 7 */
142 D_ENCRYPT(l,r,10); /* 6 */
143 D_ENCRYPT(r,l, 8); /* 5 */
144 D_ENCRYPT(l,r, 6); /* 4 */
145 D_ENCRYPT(r,l, 4); /* 3 */
146 D_ENCRYPT(l,r, 2); /* 2 */
147 D_ENCRYPT(r,l, 0); /* 1 */
149 for (i=30; i>0; i-=8)
151 D_ENCRYPT(l,r,i-0); /* 16 */
152 D_ENCRYPT(r,l,i-2); /* 15 */
153 D_ENCRYPT(l,r,i-4); /* 14 */
154 D_ENCRYPT(r,l,i-6); /* 13 */
159 /* rotate and clear the top bits on machines with 8byte longs */
160 l=ROTATE(l,3)&0xffffffffL;
161 r=ROTATE(r,3)&0xffffffffL;
169 #ifndef DES_ASM_FUNCTIONS
171 void des_encrypt2(data, ks, enc)
176 register DES_LONG l,r,t,u;
178 register unsigned char *des_SP=(unsigned char *)des_SPtrans;
183 register DES_LONG *s;
188 /* Things have been modified so that the initial rotate is
189 * done outside the loop. This required the
190 * des_SPtrans values in sp.h to be rotated 1 bit to the right.
191 * One perl script later and things have a 5% speed up on a sparc2.
192 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
193 * for pointing this out. */
194 /* clear the top bits on machines with 8byte longs */
195 r=ROTATE(r,29)&0xffffffffL;
196 l=ROTATE(l,29)&0xffffffffL;
199 /* I don't know if it is worth the effort of loop unrolling the
204 D_ENCRYPT(l,r, 0); /* 1 */
205 D_ENCRYPT(r,l, 2); /* 2 */
206 D_ENCRYPT(l,r, 4); /* 3 */
207 D_ENCRYPT(r,l, 6); /* 4 */
208 D_ENCRYPT(l,r, 8); /* 5 */
209 D_ENCRYPT(r,l,10); /* 6 */
210 D_ENCRYPT(l,r,12); /* 7 */
211 D_ENCRYPT(r,l,14); /* 8 */
212 D_ENCRYPT(l,r,16); /* 9 */
213 D_ENCRYPT(r,l,18); /* 10 */
214 D_ENCRYPT(l,r,20); /* 11 */
215 D_ENCRYPT(r,l,22); /* 12 */
216 D_ENCRYPT(l,r,24); /* 13 */
217 D_ENCRYPT(r,l,26); /* 14 */
218 D_ENCRYPT(l,r,28); /* 15 */
219 D_ENCRYPT(r,l,30); /* 16 */
221 for (i=0; i<32; i+=8)
223 D_ENCRYPT(l,r,i+0); /* 1 */
224 D_ENCRYPT(r,l,i+2); /* 2 */
225 D_ENCRYPT(l,r,i+4); /* 3 */
226 D_ENCRYPT(r,l,i+6); /* 4 */
233 D_ENCRYPT(l,r,30); /* 16 */
234 D_ENCRYPT(r,l,28); /* 15 */
235 D_ENCRYPT(l,r,26); /* 14 */
236 D_ENCRYPT(r,l,24); /* 13 */
237 D_ENCRYPT(l,r,22); /* 12 */
238 D_ENCRYPT(r,l,20); /* 11 */
239 D_ENCRYPT(l,r,18); /* 10 */
240 D_ENCRYPT(r,l,16); /* 9 */
241 D_ENCRYPT(l,r,14); /* 8 */
242 D_ENCRYPT(r,l,12); /* 7 */
243 D_ENCRYPT(l,r,10); /* 6 */
244 D_ENCRYPT(r,l, 8); /* 5 */
245 D_ENCRYPT(l,r, 6); /* 4 */
246 D_ENCRYPT(r,l, 4); /* 3 */
247 D_ENCRYPT(l,r, 2); /* 2 */
248 D_ENCRYPT(r,l, 0); /* 1 */
250 for (i=30; i>0; i-=8)
252 D_ENCRYPT(l,r,i-0); /* 16 */
253 D_ENCRYPT(r,l,i-2); /* 15 */
254 D_ENCRYPT(l,r,i-4); /* 14 */
255 D_ENCRYPT(r,l,i-6); /* 13 */
259 /* rotate and clear the top bits on machines with 8byte longs */
260 data[0]=ROTATE(l,3)&0xffffffffL;
261 data[1]=ROTATE(r,3)&0xffffffffL;
265 void des_encrypt3(data,ks1,ks2,ks3)
267 des_key_schedule ks1;
268 des_key_schedule ks2;
269 des_key_schedule ks3;
271 register DES_LONG l,r;
278 des_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);
279 des_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);
280 des_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);
288 void des_decrypt3(data,ks1,ks2,ks3)
290 des_key_schedule ks1;
291 des_key_schedule ks2;
292 des_key_schedule ks3;
294 register DES_LONG l,r;
301 des_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);
302 des_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);
303 des_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);
311 #endif /* DES_ASM_FUNCTIONS */
313 #ifndef DES_DEFAULT_OPTIONS
315 void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
317 des_cblock (*output);
319 des_key_schedule schedule;
323 register DES_LONG tin0,tin1;
324 register DES_LONG tout0,tout1,xor0,xor1;
325 register unsigned char *in,*out;
326 register long l=length;
331 if (hw_des_assist()) {
332 hw_des_ncbc_encrypt(input, output, length, schedule, ivec, enc);
337 in=(unsigned char *)input;
338 out=(unsigned char *)output;
339 iv=(unsigned char *)ivec;
345 for (l-=8; l>=0; l-=8)
349 tin0^=tout0; tin[0]=tin0;
350 tin1^=tout1; tin[1]=tin1;
351 des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
352 tout0=tin[0]; l2c(tout0,out);
353 tout1=tin[1]; l2c(tout1,out);
357 c2ln(in,tin0,tin1,l+8);
358 tin0^=tout0; tin[0]=tin0;
359 tin1^=tout1; tin[1]=tin1;
360 des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
361 tout0=tin[0]; l2c(tout0,out);
362 tout1=tin[1]; l2c(tout1,out);
364 iv=(unsigned char *)ivec;
372 for (l-=8; l>=0; l-=8)
374 c2l(in,tin0); tin[0]=tin0;
375 c2l(in,tin1); tin[1]=tin1;
376 des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
386 c2l(in,tin0); tin[0]=tin0;
387 c2l(in,tin1); tin[1]=tin1;
388 des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
391 l2cn(tout0,tout1,out,l+8);
396 iv=(unsigned char *)ivec;
400 tin0=tin1=tout0=tout1=xor0=xor1=0;
404 void des_ede3_cbc_encrypt(input, output, length, ks1, ks2, ks3, ivec, enc)
406 des_cblock (*output);
408 des_key_schedule ks1;
409 des_key_schedule ks2;
410 des_key_schedule ks3;
414 register DES_LONG tin0,tin1;
415 register DES_LONG tout0,tout1,xor0,xor1;
416 register unsigned char *in,*out;
417 register long l=length;
422 if (hw_des_assist()) {
423 hw_des_ede3_cbc_encrypt(input,output,length,ks1,ks2,ks3,ivec,enc);
428 in=(unsigned char *)input;
429 out=(unsigned char *)output;
430 iv=(unsigned char *)ivec;
436 for (l-=8; l>=0; l-=8)
445 des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
454 c2ln(in,tin0,tin1,l+8);
460 des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
467 iv=(unsigned char *)ivec;
473 register DES_LONG t0,t1;
477 for (l-=8; l>=0; l-=8)
487 des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
508 des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
514 l2cn(tout0,tout1,out,l+8);
519 iv=(unsigned char *)ivec;
523 tin0=tin1=tout0=tout1=xor0=xor1=0;
527 #endif /* DES_DEFAULT_OPTIONS */