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diff --git a/src/lib/libcrypto/sha/sha1dgst.c b/src/lib/libcrypto/sha/sha1dgst.c
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1/* crypto/sha/sha1dgst.c */
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 <stdio.h>
60#include <string.h>
61#undef SHA_0
62#define SHA_1
63#include "sha.h"
64#include "sha_locl.h"
65
66char *SHA1_version="SHA1 part of SSLeay 0.9.0b 29-Jun-1998";
67
68/* Implemented from SHA-1 document - The Secure Hash Algorithm
69 */
70
71#define INIT_DATA_h0 (unsigned long)0x67452301L
72#define INIT_DATA_h1 (unsigned long)0xefcdab89L
73#define INIT_DATA_h2 (unsigned long)0x98badcfeL
74#define INIT_DATA_h3 (unsigned long)0x10325476L
75#define INIT_DATA_h4 (unsigned long)0xc3d2e1f0L
76
77#define K_00_19 0x5a827999L
78#define K_20_39 0x6ed9eba1L
79#define K_40_59 0x8f1bbcdcL
80#define K_60_79 0xca62c1d6L
81
82#ifndef NOPROTO
83# ifdef SHA1_ASM
84 void sha1_block_x86(SHA_CTX *c, register unsigned long *p, int num);
85# define sha1_block sha1_block_x86
86# else
87 void sha1_block(SHA_CTX *c, register unsigned long *p, int num);
88# endif
89#else
90# ifdef SHA1_ASM
91 void sha1_block_x86();
92# define sha1_block sha1_block_x86
93# else
94 void sha1_block();
95# endif
96#endif
97
98
99#if defined(L_ENDIAN) && defined(SHA1_ASM)
100# define M_c2nl c2l
101# define M_p_c2nl p_c2l
102# define M_c2nl_p c2l_p
103# define M_p_c2nl_p p_c2l_p
104# define M_nl2c l2c
105#else
106# define M_c2nl c2nl
107# define M_p_c2nl p_c2nl
108# define M_c2nl_p c2nl_p
109# define M_p_c2nl_p p_c2nl_p
110# define M_nl2c nl2c
111#endif
112
113void SHA1_Init(c)
114SHA_CTX *c;
115 {
116 c->h0=INIT_DATA_h0;
117 c->h1=INIT_DATA_h1;
118 c->h2=INIT_DATA_h2;
119 c->h3=INIT_DATA_h3;
120 c->h4=INIT_DATA_h4;
121 c->Nl=0;
122 c->Nh=0;
123 c->num=0;
124 }
125
126void SHA1_Update(c, data, len)
127SHA_CTX *c;
128register unsigned char *data;
129unsigned long len;
130 {
131 register ULONG *p;
132 int ew,ec,sw,sc;
133 ULONG l;
134
135 if (len == 0) return;
136
137 l=(c->Nl+(len<<3))&0xffffffffL;
138 if (l < c->Nl) /* overflow */
139 c->Nh++;
140 c->Nh+=(len>>29);
141 c->Nl=l;
142
143 if (c->num != 0)
144 {
145 p=c->data;
146 sw=c->num>>2;
147 sc=c->num&0x03;
148
149 if ((c->num+len) >= SHA_CBLOCK)
150 {
151 l= p[sw];
152 M_p_c2nl(data,l,sc);
153 p[sw++]=l;
154 for (; sw<SHA_LBLOCK; sw++)
155 {
156 M_c2nl(data,l);
157 p[sw]=l;
158 }
159 len-=(SHA_CBLOCK-c->num);
160
161 sha1_block(c,p,64);
162 c->num=0;
163 /* drop through and do the rest */
164 }
165 else
166 {
167 c->num+=(int)len;
168 if ((sc+len) < 4) /* ugly, add char's to a word */
169 {
170 l= p[sw];
171 M_p_c2nl_p(data,l,sc,len);
172 p[sw]=l;
173 }
174 else
175 {
176 ew=(c->num>>2);
177 ec=(c->num&0x03);
178 l= p[sw];
179 M_p_c2nl(data,l,sc);
180 p[sw++]=l;
181 for (; sw < ew; sw++)
182 { M_c2nl(data,l); p[sw]=l; }
183 if (ec)
184 {
185 M_c2nl_p(data,l,ec);
186 p[sw]=l;
187 }
188 }
189 return;
190 }
191 }
192 /* We can only do the following code for assember, the reason
193 * being that the sha1_block 'C' version changes the values
194 * in the 'data' array. The assember code avoids this and
195 * copies it to a local array. I should be able to do this for
196 * the C version as well....
197 */
198#if 1
199#if defined(B_ENDIAN) || defined(SHA1_ASM)
200 if ((((unsigned int)data)%sizeof(ULONG)) == 0)
201 {
202 sw=len/SHA_CBLOCK;
203 if (sw)
204 {
205 sw*=SHA_CBLOCK;
206 sha1_block(c,(ULONG *)data,sw);
207 data+=sw;
208 len-=sw;
209 }
210 }
211#endif
212#endif
213 /* we now can process the input data in blocks of SHA_CBLOCK
214 * chars and save the leftovers to c->data. */
215 p=c->data;
216 while (len >= SHA_CBLOCK)
217 {
218#if defined(B_ENDIAN) || defined(L_ENDIAN)
219 if (p != (unsigned long *)data)
220 memcpy(p,data,SHA_CBLOCK);
221 data+=SHA_CBLOCK;
222# ifdef L_ENDIAN
223# ifndef SHA1_ASM /* Will not happen */
224 for (sw=(SHA_LBLOCK/4); sw; sw--)
225 {
226 Endian_Reverse32(p[0]);
227 Endian_Reverse32(p[1]);
228 Endian_Reverse32(p[2]);
229 Endian_Reverse32(p[3]);
230 p+=4;
231 }
232 p=c->data;
233# endif
234# endif
235#else
236 for (sw=(SHA_BLOCK/4); sw; sw--)
237 {
238 M_c2nl(data,l); *(p++)=l;
239 M_c2nl(data,l); *(p++)=l;
240 M_c2nl(data,l); *(p++)=l;
241 M_c2nl(data,l); *(p++)=l;
242 }
243 p=c->data;
244#endif
245 sha1_block(c,p,64);
246 len-=SHA_CBLOCK;
247 }
248 ec=(int)len;
249 c->num=ec;
250 ew=(ec>>2);
251 ec&=0x03;
252
253 for (sw=0; sw < ew; sw++)
254 { M_c2nl(data,l); p[sw]=l; }
255 M_c2nl_p(data,l,ec);
256 p[sw]=l;
257 }
258
259void SHA1_Transform(c,b)
260SHA_CTX *c;
261unsigned char *b;
262 {
263 ULONG p[16];
264#ifndef B_ENDIAN
265 ULONG *q;
266 int i;
267#endif
268
269#if defined(B_ENDIAN) || defined(L_ENDIAN)
270 memcpy(p,b,64);
271#ifdef L_ENDIAN
272 q=p;
273 for (i=(SHA_LBLOCK/4); i; i--)
274 {
275 Endian_Reverse32(q[0]);
276 Endian_Reverse32(q[1]);
277 Endian_Reverse32(q[2]);
278 Endian_Reverse32(q[3]);
279 q+=4;
280 }
281#endif
282#else
283 q=p;
284 for (i=(SHA_LBLOCK/4); i; i--)
285 {
286 ULONG l;
287 c2nl(b,l); *(q++)=l;
288 c2nl(b,l); *(q++)=l;
289 c2nl(b,l); *(q++)=l;
290 c2nl(b,l); *(q++)=l;
291 }
292#endif
293 sha1_block(c,p,64);
294 }
295
296#ifndef SHA1_ASM
297
298void sha1_block(c, W, num)
299SHA_CTX *c;
300register unsigned long *W;
301int num;
302 {
303 register ULONG A,B,C,D,E,T;
304 ULONG X[16];
305
306 A=c->h0;
307 B=c->h1;
308 C=c->h2;
309 D=c->h3;
310 E=c->h4;
311
312 for (;;)
313 {
314 BODY_00_15( 0,A,B,C,D,E,T,W);
315 BODY_00_15( 1,T,A,B,C,D,E,W);
316 BODY_00_15( 2,E,T,A,B,C,D,W);
317 BODY_00_15( 3,D,E,T,A,B,C,W);
318 BODY_00_15( 4,C,D,E,T,A,B,W);
319 BODY_00_15( 5,B,C,D,E,T,A,W);
320 BODY_00_15( 6,A,B,C,D,E,T,W);
321 BODY_00_15( 7,T,A,B,C,D,E,W);
322 BODY_00_15( 8,E,T,A,B,C,D,W);
323 BODY_00_15( 9,D,E,T,A,B,C,W);
324 BODY_00_15(10,C,D,E,T,A,B,W);
325 BODY_00_15(11,B,C,D,E,T,A,W);
326 BODY_00_15(12,A,B,C,D,E,T,W);
327 BODY_00_15(13,T,A,B,C,D,E,W);
328 BODY_00_15(14,E,T,A,B,C,D,W);
329 BODY_00_15(15,D,E,T,A,B,C,W);
330 BODY_16_19(16,C,D,E,T,A,B,W,W,W,W);
331 BODY_16_19(17,B,C,D,E,T,A,W,W,W,W);
332 BODY_16_19(18,A,B,C,D,E,T,W,W,W,W);
333 BODY_16_19(19,T,A,B,C,D,E,W,W,W,X);
334
335 BODY_20_31(20,E,T,A,B,C,D,W,W,W,X);
336 BODY_20_31(21,D,E,T,A,B,C,W,W,W,X);
337 BODY_20_31(22,C,D,E,T,A,B,W,W,W,X);
338 BODY_20_31(23,B,C,D,E,T,A,W,W,W,X);
339 BODY_20_31(24,A,B,C,D,E,T,W,W,X,X);
340 BODY_20_31(25,T,A,B,C,D,E,W,W,X,X);
341 BODY_20_31(26,E,T,A,B,C,D,W,W,X,X);
342 BODY_20_31(27,D,E,T,A,B,C,W,W,X,X);
343 BODY_20_31(28,C,D,E,T,A,B,W,W,X,X);
344 BODY_20_31(29,B,C,D,E,T,A,W,W,X,X);
345 BODY_20_31(30,A,B,C,D,E,T,W,X,X,X);
346 BODY_20_31(31,T,A,B,C,D,E,W,X,X,X);
347 BODY_32_39(32,E,T,A,B,C,D,X);
348 BODY_32_39(33,D,E,T,A,B,C,X);
349 BODY_32_39(34,C,D,E,T,A,B,X);
350 BODY_32_39(35,B,C,D,E,T,A,X);
351 BODY_32_39(36,A,B,C,D,E,T,X);
352 BODY_32_39(37,T,A,B,C,D,E,X);
353 BODY_32_39(38,E,T,A,B,C,D,X);
354 BODY_32_39(39,D,E,T,A,B,C,X);
355
356 BODY_40_59(40,C,D,E,T,A,B,X);
357 BODY_40_59(41,B,C,D,E,T,A,X);
358 BODY_40_59(42,A,B,C,D,E,T,X);
359 BODY_40_59(43,T,A,B,C,D,E,X);
360 BODY_40_59(44,E,T,A,B,C,D,X);
361 BODY_40_59(45,D,E,T,A,B,C,X);
362 BODY_40_59(46,C,D,E,T,A,B,X);
363 BODY_40_59(47,B,C,D,E,T,A,X);
364 BODY_40_59(48,A,B,C,D,E,T,X);
365 BODY_40_59(49,T,A,B,C,D,E,X);
366 BODY_40_59(50,E,T,A,B,C,D,X);
367 BODY_40_59(51,D,E,T,A,B,C,X);
368 BODY_40_59(52,C,D,E,T,A,B,X);
369 BODY_40_59(53,B,C,D,E,T,A,X);
370 BODY_40_59(54,A,B,C,D,E,T,X);
371 BODY_40_59(55,T,A,B,C,D,E,X);
372 BODY_40_59(56,E,T,A,B,C,D,X);
373 BODY_40_59(57,D,E,T,A,B,C,X);
374 BODY_40_59(58,C,D,E,T,A,B,X);
375 BODY_40_59(59,B,C,D,E,T,A,X);
376
377 BODY_60_79(60,A,B,C,D,E,T,X);
378 BODY_60_79(61,T,A,B,C,D,E,X);
379 BODY_60_79(62,E,T,A,B,C,D,X);
380 BODY_60_79(63,D,E,T,A,B,C,X);
381 BODY_60_79(64,C,D,E,T,A,B,X);
382 BODY_60_79(65,B,C,D,E,T,A,X);
383 BODY_60_79(66,A,B,C,D,E,T,X);
384 BODY_60_79(67,T,A,B,C,D,E,X);
385 BODY_60_79(68,E,T,A,B,C,D,X);
386 BODY_60_79(69,D,E,T,A,B,C,X);
387 BODY_60_79(70,C,D,E,T,A,B,X);
388 BODY_60_79(71,B,C,D,E,T,A,X);
389 BODY_60_79(72,A,B,C,D,E,T,X);
390 BODY_60_79(73,T,A,B,C,D,E,X);
391 BODY_60_79(74,E,T,A,B,C,D,X);
392 BODY_60_79(75,D,E,T,A,B,C,X);
393 BODY_60_79(76,C,D,E,T,A,B,X);
394 BODY_60_79(77,B,C,D,E,T,A,X);
395 BODY_60_79(78,A,B,C,D,E,T,X);
396 BODY_60_79(79,T,A,B,C,D,E,X);
397
398 c->h0=(c->h0+E)&0xffffffffL;
399 c->h1=(c->h1+T)&0xffffffffL;
400 c->h2=(c->h2+A)&0xffffffffL;
401 c->h3=(c->h3+B)&0xffffffffL;
402 c->h4=(c->h4+C)&0xffffffffL;
403
404 num-=64;
405 if (num <= 0) break;
406
407 A=c->h0;
408 B=c->h1;
409 C=c->h2;
410 D=c->h3;
411 E=c->h4;
412
413 W+=16;
414 }
415 }
416#endif
417
418void SHA1_Final(md, c)
419unsigned char *md;
420SHA_CTX *c;
421 {
422 register int i,j;
423 register ULONG l;
424 register ULONG *p;
425 static unsigned char end[4]={0x80,0x00,0x00,0x00};
426 unsigned char *cp=end;
427
428 /* c->num should definitly have room for at least one more byte. */
429 p=c->data;
430 j=c->num;
431 i=j>>2;
432#ifdef PURIFY
433 if ((j&0x03) == 0) p[i]=0;
434#endif
435 l=p[i];
436 M_p_c2nl(cp,l,j&0x03);
437 p[i]=l;
438 i++;
439 /* i is the next 'undefined word' */
440 if (c->num >= SHA_LAST_BLOCK)
441 {
442 for (; i<SHA_LBLOCK; i++)
443 p[i]=0;
444 sha1_block(c,p,64);
445 i=0;
446 }
447 for (; i<(SHA_LBLOCK-2); i++)
448 p[i]=0;
449 p[SHA_LBLOCK-2]=c->Nh;
450 p[SHA_LBLOCK-1]=c->Nl;
451#if defined(L_ENDIAN) && defined(SHA1_ASM)
452 Endian_Reverse32(p[SHA_LBLOCK-2]);
453 Endian_Reverse32(p[SHA_LBLOCK-1]);
454#endif
455 sha1_block(c,p,64);
456 cp=md;
457 l=c->h0; nl2c(l,cp);
458 l=c->h1; nl2c(l,cp);
459 l=c->h2; nl2c(l,cp);
460 l=c->h3; nl2c(l,cp);
461 l=c->h4; nl2c(l,cp);
462
463 /* clear stuff, sha1_block may be leaving some stuff on the stack
464 * but I'm not worried :-) */
465 c->num=0;
466/* memset((char *)&c,0,sizeof(c));*/
467 }
468
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