1 /* crypto/sha/sha_dgst.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.]
63 #include <openssl/sha.h>
65 #include <openssl/opensslv.h>
68 char *SHA_version="SHA" OPENSSL_VERSION_PTEXT;
70 /* Implemented from SHA-0 document - The Secure Hash Algorithm
73 #define INIT_DATA_h0 0x67452301UL
74 #define INIT_DATA_h1 0xefcdab89UL
75 #define INIT_DATA_h2 0x98badcfeUL
76 #define INIT_DATA_h3 0x10325476UL
77 #define INIT_DATA_h4 0xc3d2e1f0UL
79 #define K_00_19 0x5a827999UL
80 #define K_20_39 0x6ed9eba1UL
81 #define K_40_59 0x8f1bbcdcUL
82 #define K_60_79 0xca62c1d6UL
84 static void sha_block(SHA_CTX *c, register SHA_LONG *p, int num);
86 #if !defined(B_ENDIAN) && defined(SHA_ASM)
88 # define M_p_c2nl p_c2l
89 # define M_c2nl_p c2l_p
90 # define M_p_c2nl_p p_c2l_p
94 # define M_p_c2nl p_c2nl
95 # define M_c2nl_p c2nl_p
96 # define M_p_c2nl_p p_c2nl_p
100 void SHA_Init(SHA_CTX *c)
112 void SHA_Update(SHA_CTX *c, register const unsigned char *data,
115 register SHA_LONG *p;
119 if (len == 0) return;
121 l=(c->Nl+(len<<3))&0xffffffffL;
122 if (l < c->Nl) /* overflow */
133 if ((c->num+len) >= SHA_CBLOCK)
138 for (; sw<SHA_LBLOCK; sw++)
143 len-=(SHA_CBLOCK-c->num);
147 /* drop through and do the rest */
152 if ((sc+len) < 4) /* ugly, add char's to a word */
155 M_p_c2nl_p(data,l,sc,len);
165 for (; sw < ew; sw++)
166 { M_c2nl(data,l); p[sw]=l; }
176 /* We can only do the following code for assember, the reason
177 * being that the sha_block 'C' version changes the values
178 * in the 'data' array. The assember code avoids this and
179 * copies it to a local array. I should be able to do this for
180 * the C version as well....
183 #if defined(B_ENDIAN) || defined(SHA_ASM)
184 if ((((unsigned long)data)%sizeof(SHA_LONG)) == 0)
189 sha_block(c,(SHA_LONG *)data,sw);
197 /* we now can process the input data in blocks of SHA_CBLOCK
198 * chars and save the leftovers to c->data. */
200 while (len >= SHA_CBLOCK)
203 #if defined(B_ENDIAN) || defined(SHA_ASM)
204 #define SHA_NO_TAIL_CODE
206 * Basically we get here only when data happens
209 if (p != (SHA_LONG *)data)
210 memcpy(p,data,SHA_CBLOCK);
212 sha_block(c,p=c->data,1);
214 #elif defined(L_ENDIAN)
215 #define BE_COPY(dst,src,i) { \
216 l = ((SHA_LONG *)src)[i]; \
217 Endian_Reverse32(l); \
220 if ((((unsigned long)data)%sizeof(SHA_LONG)) == 0)
222 for (sw=(SHA_LBLOCK/4); sw; sw--)
229 data += 4*sizeof(SHA_LONG);
231 sha_block(c,p=c->data,1);
237 #ifndef SHA_NO_TAIL_CODE
239 * In addition to "sizeof(SHA_LONG)!= 4" case the
240 * following code covers unaligned access cases on
241 * little-endian machines.
242 * <appro@fy.chalmers.se>
245 for (sw=(SHA_LBLOCK/4); sw; sw--)
247 M_c2nl(data,l); p[0]=l;
248 M_c2nl(data,l); p[1]=l;
249 M_c2nl(data,l); p[2]=l;
250 M_c2nl(data,l); p[3]=l;
263 for (sw=0; sw < ew; sw++)
264 { M_c2nl(data,l); p[sw]=l; }
269 void SHA_Transform(SHA_CTX *c, unsigned char *b)
271 SHA_LONG p[SHA_LBLOCK];
274 #if defined(B_ENDIAN) || defined(SHA_ASM)
275 memcpy(p,b,SHA_CBLOCK);
278 #elif defined(L_ENDIAN)
279 if (((unsigned long)b%sizeof(SHA_LONG)) == 0)
285 for (i=(SHA_LBLOCK/4); i; i--)
288 BE_COPY(q,b,0); /* BE_COPY was defined above */
293 b+=4*sizeof(SHA_LONG);
300 #ifndef SHA_NO_TAIL_CODE /* defined above, see comment */
306 for (i=(SHA_LBLOCK/4); i; i--)
320 static void sha_block(SHA_CTX *c, register SHA_LONG *W, int num)
322 register SHA_LONG A,B,C,D,E,T;
323 SHA_LONG X[SHA_LBLOCK];
333 BODY_00_15( 0,A,B,C,D,E,T,W);
334 BODY_00_15( 1,T,A,B,C,D,E,W);
335 BODY_00_15( 2,E,T,A,B,C,D,W);
336 BODY_00_15( 3,D,E,T,A,B,C,W);
337 BODY_00_15( 4,C,D,E,T,A,B,W);
338 BODY_00_15( 5,B,C,D,E,T,A,W);
339 BODY_00_15( 6,A,B,C,D,E,T,W);
340 BODY_00_15( 7,T,A,B,C,D,E,W);
341 BODY_00_15( 8,E,T,A,B,C,D,W);
342 BODY_00_15( 9,D,E,T,A,B,C,W);
343 BODY_00_15(10,C,D,E,T,A,B,W);
344 BODY_00_15(11,B,C,D,E,T,A,W);
345 BODY_00_15(12,A,B,C,D,E,T,W);
346 BODY_00_15(13,T,A,B,C,D,E,W);
347 BODY_00_15(14,E,T,A,B,C,D,W);
348 BODY_00_15(15,D,E,T,A,B,C,W);
349 BODY_16_19(16,C,D,E,T,A,B,W,W,W,W);
350 BODY_16_19(17,B,C,D,E,T,A,W,W,W,W);
351 BODY_16_19(18,A,B,C,D,E,T,W,W,W,W);
352 BODY_16_19(19,T,A,B,C,D,E,W,W,W,X);
354 BODY_20_31(20,E,T,A,B,C,D,W,W,W,X);
355 BODY_20_31(21,D,E,T,A,B,C,W,W,W,X);
356 BODY_20_31(22,C,D,E,T,A,B,W,W,W,X);
357 BODY_20_31(23,B,C,D,E,T,A,W,W,W,X);
358 BODY_20_31(24,A,B,C,D,E,T,W,W,X,X);
359 BODY_20_31(25,T,A,B,C,D,E,W,W,X,X);
360 BODY_20_31(26,E,T,A,B,C,D,W,W,X,X);
361 BODY_20_31(27,D,E,T,A,B,C,W,W,X,X);
362 BODY_20_31(28,C,D,E,T,A,B,W,W,X,X);
363 BODY_20_31(29,B,C,D,E,T,A,W,W,X,X);
364 BODY_20_31(30,A,B,C,D,E,T,W,X,X,X);
365 BODY_20_31(31,T,A,B,C,D,E,W,X,X,X);
366 BODY_32_39(32,E,T,A,B,C,D,X);
367 BODY_32_39(33,D,E,T,A,B,C,X);
368 BODY_32_39(34,C,D,E,T,A,B,X);
369 BODY_32_39(35,B,C,D,E,T,A,X);
370 BODY_32_39(36,A,B,C,D,E,T,X);
371 BODY_32_39(37,T,A,B,C,D,E,X);
372 BODY_32_39(38,E,T,A,B,C,D,X);
373 BODY_32_39(39,D,E,T,A,B,C,X);
375 BODY_40_59(40,C,D,E,T,A,B,X);
376 BODY_40_59(41,B,C,D,E,T,A,X);
377 BODY_40_59(42,A,B,C,D,E,T,X);
378 BODY_40_59(43,T,A,B,C,D,E,X);
379 BODY_40_59(44,E,T,A,B,C,D,X);
380 BODY_40_59(45,D,E,T,A,B,C,X);
381 BODY_40_59(46,C,D,E,T,A,B,X);
382 BODY_40_59(47,B,C,D,E,T,A,X);
383 BODY_40_59(48,A,B,C,D,E,T,X);
384 BODY_40_59(49,T,A,B,C,D,E,X);
385 BODY_40_59(50,E,T,A,B,C,D,X);
386 BODY_40_59(51,D,E,T,A,B,C,X);
387 BODY_40_59(52,C,D,E,T,A,B,X);
388 BODY_40_59(53,B,C,D,E,T,A,X);
389 BODY_40_59(54,A,B,C,D,E,T,X);
390 BODY_40_59(55,T,A,B,C,D,E,X);
391 BODY_40_59(56,E,T,A,B,C,D,X);
392 BODY_40_59(57,D,E,T,A,B,C,X);
393 BODY_40_59(58,C,D,E,T,A,B,X);
394 BODY_40_59(59,B,C,D,E,T,A,X);
396 BODY_60_79(60,A,B,C,D,E,T,X);
397 BODY_60_79(61,T,A,B,C,D,E,X);
398 BODY_60_79(62,E,T,A,B,C,D,X);
399 BODY_60_79(63,D,E,T,A,B,C,X);
400 BODY_60_79(64,C,D,E,T,A,B,X);
401 BODY_60_79(65,B,C,D,E,T,A,X);
402 BODY_60_79(66,A,B,C,D,E,T,X);
403 BODY_60_79(67,T,A,B,C,D,E,X);
404 BODY_60_79(68,E,T,A,B,C,D,X);
405 BODY_60_79(69,D,E,T,A,B,C,X);
406 BODY_60_79(70,C,D,E,T,A,B,X);
407 BODY_60_79(71,B,C,D,E,T,A,X);
408 BODY_60_79(72,A,B,C,D,E,T,X);
409 BODY_60_79(73,T,A,B,C,D,E,X);
410 BODY_60_79(74,E,T,A,B,C,D,X);
411 BODY_60_79(75,D,E,T,A,B,C,X);
412 BODY_60_79(76,C,D,E,T,A,B,X);
413 BODY_60_79(77,B,C,D,E,T,A,X);
414 BODY_60_79(78,A,B,C,D,E,T,X);
415 BODY_60_79(79,T,A,B,C,D,E,X);
417 c->h0=(c->h0+E)&0xffffffffL;
418 c->h1=(c->h1+T)&0xffffffffL;
419 c->h2=(c->h2+A)&0xffffffffL;
420 c->h3=(c->h3+B)&0xffffffffL;
421 c->h4=(c->h4+C)&0xffffffffL;
423 if (--num <= 0) break;
431 W+=SHA_LBLOCK; /* Note! This can happen only when sizeof(SHA_LONG)
432 * is 4. Whenever it's not the actual case this
433 * function is never called with num larger than 1
434 * and we never advance down here.
435 * <appro@fy.chalmers.se>
441 void SHA_Final(unsigned char *md, SHA_CTX *c)
445 register SHA_LONG *p;
446 static unsigned char end[4]={0x80,0x00,0x00,0x00};
447 unsigned char *cp=end;
449 /* c->num should definitly have room for at least one more byte. */
454 if ((j&0x03) == 0) p[i]=0;
457 M_p_c2nl(cp,l,j&0x03);
460 /* i is the next 'undefined word' */
461 if (c->num >= SHA_LAST_BLOCK)
463 for (; i<SHA_LBLOCK; i++)
468 for (; i<(SHA_LBLOCK-2); i++)
470 p[SHA_LBLOCK-2]=c->Nh;
471 p[SHA_LBLOCK-1]=c->Nl;
473 #if !defined(B_ENDIAN) && defined(SHA_ASM)
474 Endian_Reverse32(p[SHA_LBLOCK-2]);
475 Endian_Reverse32(p[SHA_LBLOCK-1]);
487 /* sha_block may be leaving some stuff on the stack
488 * but I'm not worried :-)
489 memset((void *)c,0,sizeof(SHA_CTX));