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 routines 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 <sys/cdefs.h> 60 __FBSDID("$FreeBSD$"); 61 62 #include <sys/types.h> 63 64 #include <stdio.h> 65 #include <string.h> 66 67 #if 0 68 #include <machine/ansi.h> /* we use the __ variants of bit-sized types */ 69 #endif 70 #include <machine/endian.h> 71 72 #undef SHA_0 73 #define SHA_1 74 #include "sha.h" 75 #include "sha_locl.h" 76 77 /* 78 * The assembly-language code is not position-independent, so don't 79 * try to use it in a shared library. 80 */ 81 #ifdef PIC 82 #undef SHA1_ASM 83 #endif 84 85 char *SHA1_version="SHA1 part of SSLeay 0.9.0b 11-Oct-1998"; 86 87 /* Implemented from SHA-1 document - The Secure Hash Algorithm 88 */ 89 90 #define INIT_DATA_h0 (unsigned long)0x67452301L 91 #define INIT_DATA_h1 (unsigned long)0xefcdab89L 92 #define INIT_DATA_h2 (unsigned long)0x98badcfeL 93 #define INIT_DATA_h3 (unsigned long)0x10325476L 94 #define INIT_DATA_h4 (unsigned long)0xc3d2e1f0L 95 96 #define K_00_19 0x5a827999L 97 #define K_20_39 0x6ed9eba1L 98 #define K_40_59 0x8f1bbcdcL 99 #define K_60_79 0xca62c1d6L 100 101 #ifndef NOPROTO 102 # ifdef SHA1_ASM 103 void sha1_block_x86(SHA_CTX *c, const u_int32_t *p, int num); 104 # define sha1_block sha1_block_x86 105 # else 106 void sha1_block(SHA_CTX *c, const u_int32_t *p, int num); 107 # endif 108 #else 109 # ifdef SHA1_ASM 110 void sha1_block_x86(); 111 # define sha1_block sha1_block_x86 112 # else 113 void sha1_block(); 114 # endif 115 #endif 116 117 118 #if BYTE_ORDER == LITTLE_ENDIAN && defined(SHA1_ASM) 119 # define M_c2nl c2l 120 # define M_p_c2nl p_c2l 121 # define M_c2nl_p c2l_p 122 # define M_p_c2nl_p p_c2l_p 123 # define M_nl2c l2c 124 #else 125 # define M_c2nl c2nl 126 # define M_p_c2nl p_c2nl 127 # define M_c2nl_p c2nl_p 128 # define M_p_c2nl_p p_c2nl_p 129 # define M_nl2c nl2c 130 #endif 131 132 void SHA1_Init(c) 133 SHA_CTX *c; 134 { 135 c->h0=INIT_DATA_h0; 136 c->h1=INIT_DATA_h1; 137 c->h2=INIT_DATA_h2; 138 c->h3=INIT_DATA_h3; 139 c->h4=INIT_DATA_h4; 140 c->Nl=0; 141 c->Nh=0; 142 c->num=0; 143 } 144 145 void 146 SHA1_Update(c, in, len) 147 SHA_CTX *c; 148 const void *in; 149 size_t len; 150 { 151 u_int32_t *p; 152 int ew,ec,sw,sc; 153 u_int32_t l; 154 const unsigned char *data = in; 155 156 if (len == 0) return; 157 158 l=(c->Nl+(len<<3))&0xffffffffL; 159 if (l < c->Nl) /* overflow */ 160 c->Nh++; 161 c->Nh+=(len>>29); 162 c->Nl=l; 163 164 if (c->num != 0) 165 { 166 p=c->data; 167 sw=c->num>>2; 168 sc=c->num&0x03; 169 170 if ((c->num+len) >= SHA_CBLOCK) 171 { 172 l= p[sw]; 173 M_p_c2nl(data,l,sc); 174 p[sw++]=l; 175 for (; sw<SHA_LBLOCK; sw++) 176 { 177 M_c2nl(data,l); 178 p[sw]=l; 179 } 180 len-=(SHA_CBLOCK-c->num); 181 182 sha1_block(c,p,64); 183 c->num=0; 184 /* drop through and do the rest */ 185 } 186 else 187 { 188 c->num+=(int)len; 189 if ((sc+len) < 4) /* ugly, add char's to a word */ 190 { 191 l= p[sw]; 192 M_p_c2nl_p(data,l,sc,len); 193 p[sw]=l; 194 } 195 else 196 { 197 ew=(c->num>>2); 198 ec=(c->num&0x03); 199 l= p[sw]; 200 M_p_c2nl(data,l,sc); 201 p[sw++]=l; 202 for (; sw < ew; sw++) 203 { M_c2nl(data,l); p[sw]=l; } 204 if (ec) 205 { 206 M_c2nl_p(data,l,ec); 207 p[sw]=l; 208 } 209 } 210 return; 211 } 212 } 213 /* We can only do the following code for assember, the reason 214 * being that the sha1_block 'C' version changes the values 215 * in the 'data' array. The assember code avoids this and 216 * copies it to a local array. I should be able to do this for 217 * the C version as well.... 218 */ 219 #if 1 220 #if BYTE_ORDER == BIG_ENDIAN || defined(SHA1_ASM) 221 if ((((unsigned int)data)%sizeof(u_int32_t)) == 0) 222 { 223 sw=len/SHA_CBLOCK; 224 if (sw) 225 { 226 sw*=SHA_CBLOCK; 227 sha1_block(c,(u_int32_t *)data,sw); 228 data+=sw; 229 len-=sw; 230 } 231 } 232 #endif 233 #endif 234 /* we now can process the input data in blocks of SHA_CBLOCK 235 * chars and save the leftovers to c->data. */ 236 p=c->data; 237 while (len >= SHA_CBLOCK) 238 { 239 #if BYTE_ORDER == BIG_ENDIAN || BYTE_ORDER == LITTLE_ENDIAN 240 if (p != (u_int32_t *)data) 241 memcpy(p,data,SHA_CBLOCK); 242 data+=SHA_CBLOCK; 243 # if BYTE_ORDER == LITTLE_ENDIAN 244 # ifndef SHA1_ASM /* Will not happen */ 245 for (sw=(SHA_LBLOCK/4); sw; sw--) 246 { 247 Endian_Reverse32(p[0]); 248 Endian_Reverse32(p[1]); 249 Endian_Reverse32(p[2]); 250 Endian_Reverse32(p[3]); 251 p+=4; 252 } 253 p=c->data; 254 # endif 255 # endif 256 #else 257 for (sw=(SHA_BLOCK/4); sw; sw--) 258 { 259 M_c2nl(data,l); *(p++)=l; 260 M_c2nl(data,l); *(p++)=l; 261 M_c2nl(data,l); *(p++)=l; 262 M_c2nl(data,l); *(p++)=l; 263 } 264 p=c->data; 265 #endif 266 sha1_block(c,p,64); 267 len-=SHA_CBLOCK; 268 } 269 ec=(int)len; 270 c->num=ec; 271 ew=(ec>>2); 272 ec&=0x03; 273 274 for (sw=0; sw < ew; sw++) 275 { M_c2nl(data,l); p[sw]=l; } 276 M_c2nl_p(data,l,ec); 277 p[sw]=l; 278 } 279 280 void SHA1_Transform(c,b) 281 SHA_CTX *c; 282 unsigned char *b; 283 { 284 u_int32_t p[16]; 285 #if BYTE_ORDER != BIG_ENDIAN 286 u_int32_t *q; 287 int i; 288 #endif 289 290 #if BYTE_ORDER == BIG_ENDIAN || BYTE_ORDER == LITTLE_ENDIAN 291 memcpy(p,b,64); 292 #if BYTE_ORDER == LITTLE_ENDIAN 293 q=p; 294 for (i=(SHA_LBLOCK/4); i; i--) 295 { 296 Endian_Reverse32(q[0]); 297 Endian_Reverse32(q[1]); 298 Endian_Reverse32(q[2]); 299 Endian_Reverse32(q[3]); 300 q+=4; 301 } 302 #endif 303 #else 304 q=p; 305 for (i=(SHA_LBLOCK/4); i; i--) 306 { 307 u_int32_t l; 308 c2nl(b,l); *(q++)=l; 309 c2nl(b,l); *(q++)=l; 310 c2nl(b,l); *(q++)=l; 311 c2nl(b,l); *(q++)=l; 312 } 313 #endif 314 sha1_block(c,p,64); 315 } 316 317 #ifndef SHA1_ASM 318 319 void 320 sha1_block(c, W, num) 321 SHA_CTX *c; 322 const u_int32_t *W; 323 int num; 324 { 325 u_int32_t A,B,C,D,E,T; 326 u_int32_t X[16]; 327 328 A=c->h0; 329 B=c->h1; 330 C=c->h2; 331 D=c->h3; 332 E=c->h4; 333 334 for (;;) 335 { 336 BODY_00_15( 0,A,B,C,D,E,T,W); 337 BODY_00_15( 1,T,A,B,C,D,E,W); 338 BODY_00_15( 2,E,T,A,B,C,D,W); 339 BODY_00_15( 3,D,E,T,A,B,C,W); 340 BODY_00_15( 4,C,D,E,T,A,B,W); 341 BODY_00_15( 5,B,C,D,E,T,A,W); 342 BODY_00_15( 6,A,B,C,D,E,T,W); 343 BODY_00_15( 7,T,A,B,C,D,E,W); 344 BODY_00_15( 8,E,T,A,B,C,D,W); 345 BODY_00_15( 9,D,E,T,A,B,C,W); 346 BODY_00_15(10,C,D,E,T,A,B,W); 347 BODY_00_15(11,B,C,D,E,T,A,W); 348 BODY_00_15(12,A,B,C,D,E,T,W); 349 BODY_00_15(13,T,A,B,C,D,E,W); 350 BODY_00_15(14,E,T,A,B,C,D,W); 351 BODY_00_15(15,D,E,T,A,B,C,W); 352 BODY_16_19(16,C,D,E,T,A,B,W,W,W,W); 353 BODY_16_19(17,B,C,D,E,T,A,W,W,W,W); 354 BODY_16_19(18,A,B,C,D,E,T,W,W,W,W); 355 BODY_16_19(19,T,A,B,C,D,E,W,W,W,X); 356 357 BODY_20_31(20,E,T,A,B,C,D,W,W,W,X); 358 BODY_20_31(21,D,E,T,A,B,C,W,W,W,X); 359 BODY_20_31(22,C,D,E,T,A,B,W,W,W,X); 360 BODY_20_31(23,B,C,D,E,T,A,W,W,W,X); 361 BODY_20_31(24,A,B,C,D,E,T,W,W,X,X); 362 BODY_20_31(25,T,A,B,C,D,E,W,W,X,X); 363 BODY_20_31(26,E,T,A,B,C,D,W,W,X,X); 364 BODY_20_31(27,D,E,T,A,B,C,W,W,X,X); 365 BODY_20_31(28,C,D,E,T,A,B,W,W,X,X); 366 BODY_20_31(29,B,C,D,E,T,A,W,W,X,X); 367 BODY_20_31(30,A,B,C,D,E,T,W,X,X,X); 368 BODY_20_31(31,T,A,B,C,D,E,W,X,X,X); 369 BODY_32_39(32,E,T,A,B,C,D,X); 370 BODY_32_39(33,D,E,T,A,B,C,X); 371 BODY_32_39(34,C,D,E,T,A,B,X); 372 BODY_32_39(35,B,C,D,E,T,A,X); 373 BODY_32_39(36,A,B,C,D,E,T,X); 374 BODY_32_39(37,T,A,B,C,D,E,X); 375 BODY_32_39(38,E,T,A,B,C,D,X); 376 BODY_32_39(39,D,E,T,A,B,C,X); 377 378 BODY_40_59(40,C,D,E,T,A,B,X); 379 BODY_40_59(41,B,C,D,E,T,A,X); 380 BODY_40_59(42,A,B,C,D,E,T,X); 381 BODY_40_59(43,T,A,B,C,D,E,X); 382 BODY_40_59(44,E,T,A,B,C,D,X); 383 BODY_40_59(45,D,E,T,A,B,C,X); 384 BODY_40_59(46,C,D,E,T,A,B,X); 385 BODY_40_59(47,B,C,D,E,T,A,X); 386 BODY_40_59(48,A,B,C,D,E,T,X); 387 BODY_40_59(49,T,A,B,C,D,E,X); 388 BODY_40_59(50,E,T,A,B,C,D,X); 389 BODY_40_59(51,D,E,T,A,B,C,X); 390 BODY_40_59(52,C,D,E,T,A,B,X); 391 BODY_40_59(53,B,C,D,E,T,A,X); 392 BODY_40_59(54,A,B,C,D,E,T,X); 393 BODY_40_59(55,T,A,B,C,D,E,X); 394 BODY_40_59(56,E,T,A,B,C,D,X); 395 BODY_40_59(57,D,E,T,A,B,C,X); 396 BODY_40_59(58,C,D,E,T,A,B,X); 397 BODY_40_59(59,B,C,D,E,T,A,X); 398 399 BODY_60_79(60,A,B,C,D,E,T,X); 400 BODY_60_79(61,T,A,B,C,D,E,X); 401 BODY_60_79(62,E,T,A,B,C,D,X); 402 BODY_60_79(63,D,E,T,A,B,C,X); 403 BODY_60_79(64,C,D,E,T,A,B,X); 404 BODY_60_79(65,B,C,D,E,T,A,X); 405 BODY_60_79(66,A,B,C,D,E,T,X); 406 BODY_60_79(67,T,A,B,C,D,E,X); 407 BODY_60_79(68,E,T,A,B,C,D,X); 408 BODY_60_79(69,D,E,T,A,B,C,X); 409 BODY_60_79(70,C,D,E,T,A,B,X); 410 BODY_60_79(71,B,C,D,E,T,A,X); 411 BODY_60_79(72,A,B,C,D,E,T,X); 412 BODY_60_79(73,T,A,B,C,D,E,X); 413 BODY_60_79(74,E,T,A,B,C,D,X); 414 BODY_60_79(75,D,E,T,A,B,C,X); 415 BODY_60_79(76,C,D,E,T,A,B,X); 416 BODY_60_79(77,B,C,D,E,T,A,X); 417 BODY_60_79(78,A,B,C,D,E,T,X); 418 BODY_60_79(79,T,A,B,C,D,E,X); 419 420 c->h0=(c->h0+E)&0xffffffffL; 421 c->h1=(c->h1+T)&0xffffffffL; 422 c->h2=(c->h2+A)&0xffffffffL; 423 c->h3=(c->h3+B)&0xffffffffL; 424 c->h4=(c->h4+C)&0xffffffffL; 425 426 num-=64; 427 if (num <= 0) break; 428 429 A=c->h0; 430 B=c->h1; 431 C=c->h2; 432 D=c->h3; 433 E=c->h4; 434 435 W+=16; 436 } 437 } 438 #endif 439 440 void SHA1_Final(md, c) 441 unsigned char *md; 442 SHA_CTX *c; 443 { 444 int i,j; 445 u_int32_t l; 446 u_int32_t *p; 447 static unsigned char end[4]={0x80,0x00,0x00,0x00}; 448 unsigned char *cp=end; 449 450 /* c->num should definitly have room for at least one more byte. */ 451 p=c->data; 452 j=c->num; 453 i=j>>2; 454 #ifdef PURIFY 455 if ((j&0x03) == 0) p[i]=0; 456 #endif 457 l=p[i]; 458 M_p_c2nl(cp,l,j&0x03); 459 p[i]=l; 460 i++; 461 /* i is the next 'undefined word' */ 462 if (c->num >= SHA_LAST_BLOCK) 463 { 464 for (; i<SHA_LBLOCK; i++) 465 p[i]=0; 466 sha1_block(c,p,64); 467 i=0; 468 } 469 for (; i<(SHA_LBLOCK-2); i++) 470 p[i]=0; 471 p[SHA_LBLOCK-2]=c->Nh; 472 p[SHA_LBLOCK-1]=c->Nl; 473 #if BYTE_ORDER == LITTLE_ENDIAN && defined(SHA1_ASM) 474 Endian_Reverse32(p[SHA_LBLOCK-2]); 475 Endian_Reverse32(p[SHA_LBLOCK-1]); 476 #endif 477 sha1_block(c,p,64); 478 cp=md; 479 l=c->h0; nl2c(l,cp); 480 l=c->h1; nl2c(l,cp); 481 l=c->h2; nl2c(l,cp); 482 l=c->h3; nl2c(l,cp); 483 l=c->h4; nl2c(l,cp); 484 485 /* Clear the context state */ 486 explicit_bzero(&c, sizeof(c)); 487 } 488 489 #ifdef WEAK_REFS 490 /* When building libmd, provide weak references. Note: this is not 491 activated in the context of compiling these sources for internal 492 use in libcrypt. 493 */ 494 #undef SHA_Init 495 __weak_reference(_libmd_SHA_Init, SHA_Init); 496 #undef SHA_Update 497 __weak_reference(_libmd_SHA_Update, SHA_Update); 498 #undef SHA_Final 499 __weak_reference(_libmd_SHA_Final, SHA_Final); 500 #undef SHA_Transform 501 __weak_reference(_libmd_SHA_Transform, SHA_Transform); 502 #undef SHA_version 503 __weak_reference(_libmd_SHA_version, SHA_version); 504 #undef sha_block 505 __weak_reference(_libmd_sha_block, sha_block); 506 #undef SHA1_Init 507 __weak_reference(_libmd_SHA1_Init, SHA1_Init); 508 #undef SHA1_Update 509 __weak_reference(_libmd_SHA1_Update, SHA1_Update); 510 #undef SHA1_Final 511 __weak_reference(_libmd_SHA1_Final, SHA1_Final); 512 #undef SHA1_Transform 513 __weak_reference(_libmd_SHA1_Transform, SHA1_Transform); 514 #undef SHA1_version 515 __weak_reference(_libmd_SHA1_version, SHA1_version); 516 #undef sha1_block 517 __weak_reference(_libmd_sha1_block, sha1_block); 518 #endif 519