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des_enc.c

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1/* $OpenBSD: des_enc.c,v 1.12 2014/10/28 07:35:58 jsg Exp $ */-
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)-
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.-
8 * -
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).-
15 * -
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.-
22 * -
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 :-).-
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)"-
40 * -
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.-
52 * -
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#include "spr.h"-
61-
62#ifndef OPENBSD_DES_ASM-
63-
64void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)-
65 {-
66 DES_LONG l,r,t,u;-
67#ifdef DES_PTR-
68 const unsigned char *des_SP=(const unsigned char *)DES_SPtrans;-
69#endif-
70#ifndef DES_UNROLL-
71 int i;-
72#endif-
73 DES_LONG *s;-
74-
75 r=data[0];-
76 l=data[1];-
77-
78 IP(r,l);-
79 /* Things have been modified so that the initial rotate is-
80 * done outside the loop. This required the-
81 * DES_SPtrans values in sp.h to be rotated 1 bit to the right.-
82 * One perl script later and things have a 5% speed up on a sparc2.-
83 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>-
84 * for pointing this out. */-
85 /* clear the top bits on machines with 8byte longs */-
86 /* shift left by 2 */-
87 r=ROTATE(r,29)&0xffffffffL;-
88 l=ROTATE(l,29)&0xffffffffL;-
89-
90 s=ks->ks->deslong;-
91 /* I don't know if it is worth the effort of loop unrolling the-
92 * inner loop */-
93 if (enc)
encDescription
TRUEevaluated 5389 times by 3 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
FALSEevaluated 741 times by 3 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
741-5389
94 {-
95#ifdef DES_UNROLL-
96 D_ENCRYPT(l,r, 0); /* 1 */-
97 D_ENCRYPT(r,l, 2); /* 2 */-
98 D_ENCRYPT(l,r, 4); /* 3 */-
99 D_ENCRYPT(r,l, 6); /* 4 */-
100 D_ENCRYPT(l,r, 8); /* 5 */-
101 D_ENCRYPT(r,l,10); /* 6 */-
102 D_ENCRYPT(l,r,12); /* 7 */-
103 D_ENCRYPT(r,l,14); /* 8 */-
104 D_ENCRYPT(l,r,16); /* 9 */-
105 D_ENCRYPT(r,l,18); /* 10 */-
106 D_ENCRYPT(l,r,20); /* 11 */-
107 D_ENCRYPT(r,l,22); /* 12 */-
108 D_ENCRYPT(l,r,24); /* 13 */-
109 D_ENCRYPT(r,l,26); /* 14 */-
110 D_ENCRYPT(l,r,28); /* 15 */-
111 D_ENCRYPT(r,l,30); /* 16 */-
112#else-
113 for (i=0; i<32; i+=4)-
114 {-
115 D_ENCRYPT(l,r,i+0); /* 1 */-
116 D_ENCRYPT(r,l,i+2); /* 2 */-
117 }-
118#endif-
119 }
executed 5389 times by 3 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
5389
120 else-
121 {-
122#ifdef DES_UNROLL-
123 D_ENCRYPT(l,r,30); /* 16 */-
124 D_ENCRYPT(r,l,28); /* 15 */-
125 D_ENCRYPT(l,r,26); /* 14 */-
126 D_ENCRYPT(r,l,24); /* 13 */-
127 D_ENCRYPT(l,r,22); /* 12 */-
128 D_ENCRYPT(r,l,20); /* 11 */-
129 D_ENCRYPT(l,r,18); /* 10 */-
130 D_ENCRYPT(r,l,16); /* 9 */-
131 D_ENCRYPT(l,r,14); /* 8 */-
132 D_ENCRYPT(r,l,12); /* 7 */-
133 D_ENCRYPT(l,r,10); /* 6 */-
134 D_ENCRYPT(r,l, 8); /* 5 */-
135 D_ENCRYPT(l,r, 6); /* 4 */-
136 D_ENCRYPT(r,l, 4); /* 3 */-
137 D_ENCRYPT(l,r, 2); /* 2 */-
138 D_ENCRYPT(r,l, 0); /* 1 */-
139#else-
140 for (i=30; i>0; i-=4)-
141 {-
142 D_ENCRYPT(l,r,i-0); /* 16 */-
143 D_ENCRYPT(r,l,i-2); /* 15 */-
144 }-
145#endif-
146 }
executed 741 times by 3 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
741
147-
148 /* rotate and clear the top bits on machines with 8byte longs */-
149 l=ROTATE(l,3)&0xffffffffL;-
150 r=ROTATE(r,3)&0xffffffffL;-
151-
152 FP(r,l);-
153 data[0]=l;-
154 data[1]=r;-
155 l=r=t=u=0;-
156 }
executed 6130 times by 3 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
6130
157-
158void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)-
159 {-
160 DES_LONG l,r,t,u;-
161#ifdef DES_PTR-
162 const unsigned char *des_SP=(const unsigned char *)DES_SPtrans;-
163#endif-
164#ifndef DES_UNROLL-
165 int i;-
166#endif-
167 DES_LONG *s;-
168-
169 r=data[0];-
170 l=data[1];-
171-
172 /* Things have been modified so that the initial rotate is-
173 * done outside the loop. This required the-
174 * DES_SPtrans values in sp.h to be rotated 1 bit to the right.-
175 * One perl script later and things have a 5% speed up on a sparc2.-
176 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>-
177 * 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;-
181-
182 s=ks->ks->deslong;-
183 /* I don't know if it is worth the effort of loop unrolling the-
184 * inner loop */-
185 if (enc)
encDescription
TRUEevaluated 6658 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
FALSEevaluated 4862 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
4862-6658
186 {-
187#ifdef DES_UNROLL-
188 D_ENCRYPT(l,r, 0); /* 1 */-
189 D_ENCRYPT(r,l, 2); /* 2 */-
190 D_ENCRYPT(l,r, 4); /* 3 */-
191 D_ENCRYPT(r,l, 6); /* 4 */-
192 D_ENCRYPT(l,r, 8); /* 5 */-
193 D_ENCRYPT(r,l,10); /* 6 */-
194 D_ENCRYPT(l,r,12); /* 7 */-
195 D_ENCRYPT(r,l,14); /* 8 */-
196 D_ENCRYPT(l,r,16); /* 9 */-
197 D_ENCRYPT(r,l,18); /* 10 */-
198 D_ENCRYPT(l,r,20); /* 11 */-
199 D_ENCRYPT(r,l,22); /* 12 */-
200 D_ENCRYPT(l,r,24); /* 13 */-
201 D_ENCRYPT(r,l,26); /* 14 */-
202 D_ENCRYPT(l,r,28); /* 15 */-
203 D_ENCRYPT(r,l,30); /* 16 */-
204#else-
205 for (i=0; i<32; i+=4)-
206 {-
207 D_ENCRYPT(l,r,i+0); /* 1 */-
208 D_ENCRYPT(r,l,i+2); /* 2 */-
209 }-
210#endif-
211 }
executed 6658 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
6658
212 else-
213 {-
214#ifdef DES_UNROLL-
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 */-
231#else-
232 for (i=30; i>0; i-=4)-
233 {-
234 D_ENCRYPT(l,r,i-0); /* 16 */-
235 D_ENCRYPT(r,l,i-2); /* 15 */-
236 }-
237#endif-
238 }
executed 4862 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
4862
239 /* rotate and clear the top bits on machines with 8byte longs */-
240 data[0]=ROTATE(l,3)&0xffffffffL;-
241 data[1]=ROTATE(r,3)&0xffffffffL;-
242 l=r=t=u=0;-
243 }
executed 11520 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
11520
244-
245#endif /* OPENBSD_DES_ASM */-
246-
247void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,-
248 DES_key_schedule *ks2, DES_key_schedule *ks3)-
249 {-
250 DES_LONG l,r;-
251-
252 l=data[0];-
253 r=data[1];-
254 IP(l,r);-
255 data[0]=l;-
256 data[1]=r;-
257 DES_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);-
258 DES_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);-
259 DES_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);-
260 l=data[0];-
261 r=data[1];-
262 FP(r,l);-
263 data[0]=l;-
264 data[1]=r;-
265 }
executed 2818 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
2818
266-
267void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,-
268 DES_key_schedule *ks2, DES_key_schedule *ks3)-
269 {-
270 DES_LONG l,r;-
271-
272 l=data[0];-
273 r=data[1];-
274 IP(l,r);-
275 data[0]=l;-
276 data[1]=r;-
277 DES_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);-
278 DES_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);-
279 DES_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);-
280 l=data[0];-
281 r=data[1];-
282 FP(r,l);-
283 data[0]=l;-
284 data[1]=r;-
285 }
executed 1022 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
1022
286-
287#ifndef DES_DEFAULT_OPTIONS-
288-
289#undef CBC_ENC_C__DONT_UPDATE_IV-
290#include "ncbc_enc.c" /* DES_ncbc_encrypt */-
291-
292void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,-
293 long length, DES_key_schedule *ks1,-
294 DES_key_schedule *ks2, DES_key_schedule *ks3,-
295 DES_cblock *ivec, int enc)-
296 {-
297 DES_LONG tin0,tin1;-
298 DES_LONG tout0,tout1,xor0,xor1;-
299 const unsigned char *in;-
300 unsigned char *out;-
301 long l=length;-
302 DES_LONG tin[2];-
303 unsigned char *iv;-
304-
305 in=input;-
306 out=output;-
307 iv = &(*ivec)[0];-
308-
309 if (enc)
encDescription
TRUEevaluated 17 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
FALSEevaluated 10 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
10-17
310 {-
311 c2l(iv,tout0);-
312 c2l(iv,tout1);-
313 for (l-=8; l>=0; l-=8)
l>=0Description
TRUEevaluated 549 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
FALSEevaluated 17 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
17-549
314 {-
315 c2l(in,tin0);-
316 c2l(in,tin1);-
317 tin0^=tout0;-
318 tin1^=tout1;-
319-
320 tin[0]=tin0;-
321 tin[1]=tin1;-
322 DES_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);-
323 tout0=tin[0];-
324 tout1=tin[1];-
325-
326 l2c(tout0,out);-
327 l2c(tout1,out);-
328 }
executed 549 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
549
329 if (l != -8)
l != -8Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • destest
FALSEevaluated 16 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
1-16
330 {-
331 c2ln(in,tin0,tin1,l+8);
executed 1 time by 1 test: end of block
Executed by:
  • destest
code before this statement never executed: case 7:
code before this statement never executed: case 6:
code before this statement never executed: case 5:
code before this statement executed 1 time by 1 test: case 4:
Executed by:
  • destest
code before this statement executed 1 time by 1 test: case 3:
Executed by:
  • destest
code before this statement executed 1 time by 1 test: case 2:
Executed by:
  • destest
code before this statement executed 1 time by 1 test: case 1:
Executed by:
  • destest
never executed: case 8:
never executed: case 7:
never executed: case 6:
executed 1 time by 1 test: case 5:
Executed by:
  • destest
never executed: case 4:
never executed: case 3:
never executed: case 2:
executed 1 time by 1 test: case 1:
Executed by:
  • destest
0-1
332 tin0^=tout0;-
333 tin1^=tout1;-
334-
335 tin[0]=tin0;-
336 tin[1]=tin1;-
337 DES_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);-
338 tout0=tin[0];-
339 tout1=tin[1];-
340-
341 l2c(tout0,out);-
342 l2c(tout1,out);-
343 }
executed 1 time by 1 test: end of block
Executed by:
  • destest
1
344 iv = &(*ivec)[0];-
345 l2c(tout0,iv);-
346 l2c(tout1,iv);-
347 }
executed 17 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
17
348 else-
349 {-
350 DES_LONG t0,t1;-
351-
352 c2l(iv,xor0);-
353 c2l(iv,xor1);-
354 for (l-=8; l>=0; l-=8)
l>=0Description
TRUEevaluated 541 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
FALSEevaluated 10 times by 4 tests
Evaluated by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
10-541
355 {-
356 c2l(in,tin0);-
357 c2l(in,tin1);-
358-
359 t0=tin0;-
360 t1=tin1;-
361-
362 tin[0]=tin0;-
363 tin[1]=tin1;-
364 DES_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);-
365 tout0=tin[0];-
366 tout1=tin[1];-
367-
368 tout0^=xor0;-
369 tout1^=xor1;-
370 l2c(tout0,out);-
371 l2c(tout1,out);-
372 xor0=t0;-
373 xor1=t1;-
374 }
executed 541 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
541
375 if (l != -8)
l != -8Description
TRUEevaluated 1 time by 1 test
Evaluated by:
  • destest
FALSEevaluated 9 times by 3 tests
Evaluated by:
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
1-9
376 {-
377 c2l(in,tin0);-
378 c2l(in,tin1);-
379 -
380 t0=tin0;-
381 t1=tin1;-
382-
383 tin[0]=tin0;-
384 tin[1]=tin1;-
385 DES_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);-
386 tout0=tin[0];-
387 tout1=tin[1];-
388 -
389 tout0^=xor0;-
390 tout1^=xor1;-
391 l2cn(tout0,tout1,out,l+8);
executed 1 time by 1 test: end of block
Executed by:
  • destest
code before this statement never executed: case 7:
code before this statement never executed: case 6:
code before this statement never executed: case 5:
code before this statement executed 1 time by 1 test: case 4:
Executed by:
  • destest
code before this statement executed 1 time by 1 test: case 3:
Executed by:
  • destest
code before this statement executed 1 time by 1 test: case 2:
Executed by:
  • destest
code before this statement executed 1 time by 1 test: case 1:
Executed by:
  • destest
never executed: case 8:
never executed: case 7:
never executed: case 6:
executed 1 time by 1 test: case 5:
Executed by:
  • destest
never executed: case 4:
never executed: case 3:
never executed: case 2:
executed 1 time by 1 test: case 1:
Executed by:
  • destest
0-1
392 xor0=t0;-
393 xor1=t1;-
394 }
executed 1 time by 1 test: end of block
Executed by:
  • destest
1
395-
396 iv = &(*ivec)[0];-
397 l2c(xor0,iv);-
398 l2c(xor1,iv);-
399 }
executed 10 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
10
400 tin0=tin1=tout0=tout1=xor0=xor1=0;-
401 tin[0]=tin[1]=0;-
402 }
executed 27 times by 4 tests: end of block
Executed by:
  • destest
  • evptest
  • libcrypto.so.44.0.1
  • ssltest
27
403-
404#endif /* DES_DEFAULT_OPTIONS */-
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