1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * The basic framework for this code came from the reference 8 * implementation for MD5. That implementation is Copyright (C) 9 * 1991-2, RSA Data Security, Inc. Created 1991. All rights reserved. 10 * 11 * License to copy and use this software is granted provided that it 12 * is identified as the "RSA Data Security, Inc. MD5 Message-Digest 13 * Algorithm" in all material mentioning or referencing this software 14 * or this function. 15 * 16 * License is also granted to make and use derivative works provided 17 * that such works are identified as "derived from the RSA Data 18 * Security, Inc. MD5 Message-Digest Algorithm" in all material 19 * mentioning or referencing the derived work. 20 * 21 * RSA Data Security, Inc. makes no representations concerning either 22 * the merchantability of this software or the suitability of this 23 * software for any particular purpose. It is provided "as is" 24 * without express or implied warranty of any kind. 25 * 26 * These notices must be retained in any copies of any part of this 27 * documentation and/or software. 28 * 29 * NOTE: Cleaned-up and optimized, version of SHA1, based on the FIPS 180-1 30 * standard, available at http://www.itl.nist.gov/fipspubs/fip180-1.htm 31 * Not as fast as one would like -- further optimizations are encouraged 32 * and appreciated. 33 */ 34 35 #if defined(_STANDALONE) 36 #include <sys/cdefs.h> 37 #define _RESTRICT_KYWD restrict 38 #else 39 #if !defined(_KERNEL) && !defined(_BOOT) 40 #include <stdint.h> 41 #include <strings.h> 42 #include <stdlib.h> 43 #include <errno.h> 44 #include <sys/systeminfo.h> 45 #endif /* !_KERNEL && !_BOOT */ 46 #endif /* _STANDALONE */ 47 48 #include <sys/types.h> 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/sysmacros.h> 52 #include <sys/sha1.h> 53 #include <sys/sha1_consts.h> 54 55 #if defined(_STANDALONE) 56 #include <sys/endian.h> 57 #define HAVE_HTONL 58 #if _BYTE_ORDER == _LITTLE_ENDIAN 59 #undef _BIG_ENDIAN 60 #else 61 #undef _LITTLE_ENDIAN 62 #endif 63 #else 64 #ifdef _LITTLE_ENDIAN 65 #include <sys/byteorder.h> 66 #define HAVE_HTONL 67 #endif 68 #endif /* _STANDALONE */ 69 70 #ifdef _BOOT 71 #define bcopy(_s, _d, _l) ((void) memcpy((_d), (_s), (_l))) 72 #define bzero(_m, _l) ((void) memset((_m), 0, (_l))) 73 #endif 74 75 static void Encode(uint8_t *, const uint32_t *, size_t); 76 77 #if defined(__sparc) 78 79 #define SHA1_TRANSFORM(ctx, in) \ 80 SHA1Transform((ctx)->state[0], (ctx)->state[1], (ctx)->state[2], \ 81 (ctx)->state[3], (ctx)->state[4], (ctx), (in)) 82 83 static void SHA1Transform(uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, 84 SHA1_CTX *, const uint8_t *); 85 86 #elif defined(__amd64) 87 88 #define SHA1_TRANSFORM(ctx, in) sha1_block_data_order((ctx), (in), 1) 89 #define SHA1_TRANSFORM_BLOCKS(ctx, in, num) sha1_block_data_order((ctx), \ 90 (in), (num)) 91 92 void sha1_block_data_order(SHA1_CTX *ctx, const void *inpp, size_t num_blocks); 93 94 #else 95 96 #define SHA1_TRANSFORM(ctx, in) SHA1Transform((ctx), (in)) 97 98 static void SHA1Transform(SHA1_CTX *, const uint8_t *); 99 100 #endif 101 102 103 static uint8_t PADDING[64] = { 0x80, /* all zeros */ }; 104 105 /* 106 * F, G, and H are the basic SHA1 functions. 107 */ 108 #define F(b, c, d) (((b) & (c)) | ((~b) & (d))) 109 #define G(b, c, d) ((b) ^ (c) ^ (d)) 110 #define H(b, c, d) (((b) & (c)) | (((b)|(c)) & (d))) 111 112 /* 113 * ROTATE_LEFT rotates x left n bits. 114 */ 115 116 #if defined(__GNUC__) && defined(_LP64) 117 static __inline__ uint64_t 118 ROTATE_LEFT(uint64_t value, uint32_t n) 119 { 120 uint32_t t32; 121 122 t32 = (uint32_t)value; 123 return ((t32 << n) | (t32 >> (32 - n))); 124 } 125 126 #else 127 128 #define ROTATE_LEFT(x, n) \ 129 (((x) << (n)) | ((x) >> ((sizeof (x) * NBBY)-(n)))) 130 131 #endif 132 133 134 /* 135 * SHA1Init() 136 * 137 * purpose: initializes the sha1 context and begins and sha1 digest operation 138 * input: SHA1_CTX * : the context to initializes. 139 * output: void 140 */ 141 142 void 143 SHA1Init(SHA1_CTX *ctx) 144 { 145 ctx->count[0] = ctx->count[1] = 0; 146 147 /* 148 * load magic initialization constants. Tell lint 149 * that these constants are unsigned by using U. 150 */ 151 152 ctx->state[0] = 0x67452301U; 153 ctx->state[1] = 0xefcdab89U; 154 ctx->state[2] = 0x98badcfeU; 155 ctx->state[3] = 0x10325476U; 156 ctx->state[4] = 0xc3d2e1f0U; 157 } 158 159 #ifdef VIS_SHA1 160 #ifdef _KERNEL 161 162 #include <sys/regset.h> 163 #include <sys/vis.h> 164 #include <sys/fpu/fpusystm.h> 165 166 /* the alignment for block stores to save fp registers */ 167 #define VIS_ALIGN (64) 168 169 extern int sha1_savefp(kfpu_t *, int); 170 extern void sha1_restorefp(kfpu_t *); 171 172 uint32_t vis_sha1_svfp_threshold = 128; 173 174 #endif /* _KERNEL */ 175 176 /* 177 * VIS SHA-1 consts. 178 */ 179 static uint64_t VIS[] = { 180 0x8000000080000000ULL, 181 0x0002000200020002ULL, 182 0x5a8279996ed9eba1ULL, 183 0x8f1bbcdcca62c1d6ULL, 184 0x012389ab456789abULL}; 185 186 extern void SHA1TransformVIS(uint64_t *, uint32_t *, uint32_t *, uint64_t *); 187 188 189 /* 190 * SHA1Update() 191 * 192 * purpose: continues an sha1 digest operation, using the message block 193 * to update the context. 194 * input: SHA1_CTX * : the context to update 195 * void * : the message block 196 * size_t : the length of the message block in bytes 197 * output: void 198 */ 199 200 void 201 SHA1Update(SHA1_CTX *ctx, const void *inptr, size_t input_len) 202 { 203 uint32_t i, buf_index, buf_len; 204 uint64_t X0[40], input64[8]; 205 const uint8_t *input = inptr; 206 #ifdef _KERNEL 207 int usevis = 0; 208 #else 209 int usevis = 1; 210 #endif /* _KERNEL */ 211 212 /* check for noop */ 213 if (input_len == 0) 214 return; 215 216 /* compute number of bytes mod 64 */ 217 buf_index = (ctx->count[1] >> 3) & 0x3F; 218 219 /* update number of bits */ 220 if ((ctx->count[1] += (input_len << 3)) < (input_len << 3)) 221 ctx->count[0]++; 222 223 ctx->count[0] += (input_len >> 29); 224 225 buf_len = 64 - buf_index; 226 227 /* transform as many times as possible */ 228 i = 0; 229 if (input_len >= buf_len) { 230 #ifdef _KERNEL 231 kfpu_t *fpu; 232 if (fpu_exists) { 233 uint8_t fpua[sizeof (kfpu_t) + GSR_SIZE + VIS_ALIGN]; 234 uint32_t len = (input_len + buf_index) & ~0x3f; 235 int svfp_ok; 236 237 fpu = (kfpu_t *)P2ROUNDUP((uintptr_t)fpua, 64); 238 svfp_ok = ((len >= vis_sha1_svfp_threshold) ? 1 : 0); 239 usevis = fpu_exists && sha1_savefp(fpu, svfp_ok); 240 } else { 241 usevis = 0; 242 } 243 #endif /* _KERNEL */ 244 245 /* 246 * general optimization: 247 * 248 * only do initial bcopy() and SHA1Transform() if 249 * buf_index != 0. if buf_index == 0, we're just 250 * wasting our time doing the bcopy() since there 251 * wasn't any data left over from a previous call to 252 * SHA1Update(). 253 */ 254 255 if (buf_index) { 256 bcopy(input, &ctx->buf_un.buf8[buf_index], buf_len); 257 if (usevis) { 258 SHA1TransformVIS(X0, 259 ctx->buf_un.buf32, 260 &ctx->state[0], VIS); 261 } else { 262 SHA1_TRANSFORM(ctx, ctx->buf_un.buf8); 263 } 264 i = buf_len; 265 } 266 267 /* 268 * VIS SHA-1: uses the VIS 1.0 instructions to accelerate 269 * SHA-1 processing. This is achieved by "offloading" the 270 * computation of the message schedule (MS) to the VIS units. 271 * This allows the VIS computation of the message schedule 272 * to be performed in parallel with the standard integer 273 * processing of the remainder of the SHA-1 computation. 274 * performance by up to around 1.37X, compared to an optimized 275 * integer-only implementation. 276 * 277 * The VIS implementation of SHA1Transform has a different API 278 * to the standard integer version: 279 * 280 * void SHA1TransformVIS( 281 * uint64_t *, // Pointer to MS for ith block 282 * uint32_t *, // Pointer to ith block of message data 283 * uint32_t *, // Pointer to SHA state i.e ctx->state 284 * uint64_t *, // Pointer to various VIS constants 285 * ) 286 * 287 * Note: the message data must by 4-byte aligned. 288 * 289 * Function requires VIS 1.0 support. 290 * 291 * Handling is provided to deal with arbitrary byte alingment 292 * of the input data but the performance gains are reduced 293 * for alignments other than 4-bytes. 294 */ 295 if (usevis) { 296 if (!IS_P2ALIGNED(&input[i], sizeof (uint32_t))) { 297 /* 298 * Main processing loop - input misaligned 299 */ 300 for (; i + 63 < input_len; i += 64) { 301 bcopy(&input[i], input64, 64); 302 SHA1TransformVIS(X0, 303 (uint32_t *)input64, 304 &ctx->state[0], VIS); 305 } 306 } else { 307 /* 308 * Main processing loop - input 8-byte aligned 309 */ 310 for (; i + 63 < input_len; i += 64) { 311 SHA1TransformVIS(X0, 312 /* LINTED E_BAD_PTR_CAST_ALIGN */ 313 (uint32_t *)&input[i], /* CSTYLED */ 314 &ctx->state[0], VIS); 315 } 316 317 } 318 #ifdef _KERNEL 319 sha1_restorefp(fpu); 320 #endif /* _KERNEL */ 321 } else { 322 for (; i + 63 < input_len; i += 64) { 323 SHA1_TRANSFORM(ctx, &input[i]); 324 } 325 } 326 327 /* 328 * general optimization: 329 * 330 * if i and input_len are the same, return now instead 331 * of calling bcopy(), since the bcopy() in this case 332 * will be an expensive nop. 333 */ 334 335 if (input_len == i) 336 return; 337 338 buf_index = 0; 339 } 340 341 /* buffer remaining input */ 342 bcopy(&input[i], &ctx->buf_un.buf8[buf_index], input_len - i); 343 } 344 345 #else /* VIS_SHA1 */ 346 347 void 348 SHA1Update(SHA1_CTX *ctx, const void *inptr, size_t input_len) 349 { 350 uint32_t i, buf_index, buf_len; 351 const uint8_t *input = inptr; 352 #if defined(__amd64) 353 uint32_t block_count; 354 #endif /* __amd64 */ 355 356 /* check for noop */ 357 if (input_len == 0) 358 return; 359 360 /* compute number of bytes mod 64 */ 361 buf_index = (ctx->count[1] >> 3) & 0x3F; 362 363 /* update number of bits */ 364 if ((ctx->count[1] += (input_len << 3)) < (input_len << 3)) 365 ctx->count[0]++; 366 367 ctx->count[0] += (input_len >> 29); 368 369 buf_len = 64 - buf_index; 370 371 /* transform as many times as possible */ 372 i = 0; 373 if (input_len >= buf_len) { 374 375 /* 376 * general optimization: 377 * 378 * only do initial bcopy() and SHA1Transform() if 379 * buf_index != 0. if buf_index == 0, we're just 380 * wasting our time doing the bcopy() since there 381 * wasn't any data left over from a previous call to 382 * SHA1Update(). 383 */ 384 385 if (buf_index) { 386 bcopy(input, &ctx->buf_un.buf8[buf_index], buf_len); 387 SHA1_TRANSFORM(ctx, ctx->buf_un.buf8); 388 i = buf_len; 389 } 390 391 #if !defined(__amd64) 392 for (; i + 63 < input_len; i += 64) 393 SHA1_TRANSFORM(ctx, &input[i]); 394 #else 395 block_count = (input_len - i) >> 6; 396 if (block_count > 0) { 397 SHA1_TRANSFORM_BLOCKS(ctx, &input[i], block_count); 398 i += block_count << 6; 399 } 400 #endif /* !__amd64 */ 401 402 /* 403 * general optimization: 404 * 405 * if i and input_len are the same, return now instead 406 * of calling bcopy(), since the bcopy() in this case 407 * will be an expensive nop. 408 */ 409 410 if (input_len == i) 411 return; 412 413 buf_index = 0; 414 } 415 416 /* buffer remaining input */ 417 bcopy(&input[i], &ctx->buf_un.buf8[buf_index], input_len - i); 418 } 419 420 #endif /* VIS_SHA1 */ 421 422 /* 423 * SHA1Final() 424 * 425 * purpose: ends an sha1 digest operation, finalizing the message digest and 426 * zeroing the context. 427 * input: uchar_t * : A buffer to store the digest. 428 * : The function actually uses void* because many 429 * : callers pass things other than uchar_t here. 430 * SHA1_CTX * : the context to finalize, save, and zero 431 * output: void 432 */ 433 434 void 435 SHA1Final(void *digest, SHA1_CTX *ctx) 436 { 437 uint8_t bitcount_be[sizeof (ctx->count)]; 438 uint32_t index = (ctx->count[1] >> 3) & 0x3f; 439 440 /* store bit count, big endian */ 441 Encode(bitcount_be, ctx->count, sizeof (bitcount_be)); 442 443 /* pad out to 56 mod 64 */ 444 SHA1Update(ctx, PADDING, ((index < 56) ? 56 : 120) - index); 445 446 /* append length (before padding) */ 447 SHA1Update(ctx, bitcount_be, sizeof (bitcount_be)); 448 449 /* store state in digest */ 450 Encode(digest, ctx->state, sizeof (ctx->state)); 451 452 /* zeroize sensitive information */ 453 bzero(ctx, sizeof (*ctx)); 454 } 455 456 457 #if !defined(__amd64) 458 459 typedef uint32_t sha1word; 460 461 /* 462 * sparc optimization: 463 * 464 * on the sparc, we can load big endian 32-bit data easily. note that 465 * special care must be taken to ensure the address is 32-bit aligned. 466 * in the interest of speed, we don't check to make sure, since 467 * careful programming can guarantee this for us. 468 */ 469 470 #if defined(_BIG_ENDIAN) 471 #define LOAD_BIG_32(addr) (*(uint32_t *)(addr)) 472 473 #elif defined(HAVE_HTONL) 474 #define LOAD_BIG_32(addr) htonl(*((uint32_t *)(addr))) 475 476 #else 477 /* little endian -- will work on big endian, but slowly */ 478 #define LOAD_BIG_32(addr) \ 479 (((addr)[0] << 24) | ((addr)[1] << 16) | ((addr)[2] << 8) | (addr)[3]) 480 #endif /* _BIG_ENDIAN */ 481 482 /* 483 * SHA1Transform() 484 */ 485 #if defined(W_ARRAY) 486 #define W(n) w[n] 487 #else /* !defined(W_ARRAY) */ 488 #define W(n) w_ ## n 489 #endif /* !defined(W_ARRAY) */ 490 491 492 #if defined(__sparc) 493 494 /* 495 * sparc register window optimization: 496 * 497 * `a', `b', `c', `d', and `e' are passed into SHA1Transform 498 * explicitly since it increases the number of registers available to 499 * the compiler. under this scheme, these variables can be held in 500 * %i0 - %i4, which leaves more local and out registers available. 501 * 502 * purpose: sha1 transformation -- updates the digest based on `block' 503 * input: uint32_t : bytes 1 - 4 of the digest 504 * uint32_t : bytes 5 - 8 of the digest 505 * uint32_t : bytes 9 - 12 of the digest 506 * uint32_t : bytes 12 - 16 of the digest 507 * uint32_t : bytes 16 - 20 of the digest 508 * SHA1_CTX * : the context to update 509 * uint8_t [64]: the block to use to update the digest 510 * output: void 511 */ 512 513 void 514 SHA1Transform(uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, 515 SHA1_CTX *ctx, const uint8_t blk[64]) 516 { 517 /* 518 * sparc optimization: 519 * 520 * while it is somewhat counter-intuitive, on sparc, it is 521 * more efficient to place all the constants used in this 522 * function in an array and load the values out of the array 523 * than to manually load the constants. this is because 524 * setting a register to a 32-bit value takes two ops in most 525 * cases: a `sethi' and an `or', but loading a 32-bit value 526 * from memory only takes one `ld' (or `lduw' on v9). while 527 * this increases memory usage, the compiler can find enough 528 * other things to do while waiting to keep the pipeline does 529 * not stall. additionally, it is likely that many of these 530 * constants are cached so that later accesses do not even go 531 * out to the bus. 532 * 533 * this array is declared `static' to keep the compiler from 534 * having to bcopy() this array onto the stack frame of 535 * SHA1Transform() each time it is called -- which is 536 * unacceptably expensive. 537 * 538 * the `const' is to ensure that callers are good citizens and 539 * do not try to munge the array. since these routines are 540 * going to be called from inside multithreaded kernelland, 541 * this is a good safety check. -- `sha1_consts' will end up in 542 * .rodata. 543 * 544 * unfortunately, loading from an array in this manner hurts 545 * performance under Intel. So, there is a macro, 546 * SHA1_CONST(), used in SHA1Transform(), that either expands to 547 * a reference to this array, or to the actual constant, 548 * depending on what platform this code is compiled for. 549 */ 550 551 static const uint32_t sha1_consts[] = { 552 SHA1_CONST_0, SHA1_CONST_1, SHA1_CONST_2, SHA1_CONST_3 553 }; 554 555 /* 556 * general optimization: 557 * 558 * use individual integers instead of using an array. this is a 559 * win, although the amount it wins by seems to vary quite a bit. 560 */ 561 562 uint32_t w_0, w_1, w_2, w_3, w_4, w_5, w_6, w_7; 563 uint32_t w_8, w_9, w_10, w_11, w_12, w_13, w_14, w_15; 564 565 /* 566 * sparc optimization: 567 * 568 * if `block' is already aligned on a 4-byte boundary, use 569 * LOAD_BIG_32() directly. otherwise, bcopy() into a 570 * buffer that *is* aligned on a 4-byte boundary and then do 571 * the LOAD_BIG_32() on that buffer. benchmarks have shown 572 * that using the bcopy() is better than loading the bytes 573 * individually and doing the endian-swap by hand. 574 * 575 * even though it's quite tempting to assign to do: 576 * 577 * blk = bcopy(ctx->buf_un.buf32, blk, sizeof (ctx->buf_un.buf32)); 578 * 579 * and only have one set of LOAD_BIG_32()'s, the compiler 580 * *does not* like that, so please resist the urge. 581 */ 582 583 if ((uintptr_t)blk & 0x3) { /* not 4-byte aligned? */ 584 bcopy(blk, ctx->buf_un.buf32, sizeof (ctx->buf_un.buf32)); 585 w_15 = LOAD_BIG_32(ctx->buf_un.buf32 + 15); 586 w_14 = LOAD_BIG_32(ctx->buf_un.buf32 + 14); 587 w_13 = LOAD_BIG_32(ctx->buf_un.buf32 + 13); 588 w_12 = LOAD_BIG_32(ctx->buf_un.buf32 + 12); 589 w_11 = LOAD_BIG_32(ctx->buf_un.buf32 + 11); 590 w_10 = LOAD_BIG_32(ctx->buf_un.buf32 + 10); 591 w_9 = LOAD_BIG_32(ctx->buf_un.buf32 + 9); 592 w_8 = LOAD_BIG_32(ctx->buf_un.buf32 + 8); 593 w_7 = LOAD_BIG_32(ctx->buf_un.buf32 + 7); 594 w_6 = LOAD_BIG_32(ctx->buf_un.buf32 + 6); 595 w_5 = LOAD_BIG_32(ctx->buf_un.buf32 + 5); 596 w_4 = LOAD_BIG_32(ctx->buf_un.buf32 + 4); 597 w_3 = LOAD_BIG_32(ctx->buf_un.buf32 + 3); 598 w_2 = LOAD_BIG_32(ctx->buf_un.buf32 + 2); 599 w_1 = LOAD_BIG_32(ctx->buf_un.buf32 + 1); 600 w_0 = LOAD_BIG_32(ctx->buf_un.buf32 + 0); 601 } else { 602 /* LINTED E_BAD_PTR_CAST_ALIGN */ 603 w_15 = LOAD_BIG_32(blk + 60); 604 /* LINTED E_BAD_PTR_CAST_ALIGN */ 605 w_14 = LOAD_BIG_32(blk + 56); 606 /* LINTED E_BAD_PTR_CAST_ALIGN */ 607 w_13 = LOAD_BIG_32(blk + 52); 608 /* LINTED E_BAD_PTR_CAST_ALIGN */ 609 w_12 = LOAD_BIG_32(blk + 48); 610 /* LINTED E_BAD_PTR_CAST_ALIGN */ 611 w_11 = LOAD_BIG_32(blk + 44); 612 /* LINTED E_BAD_PTR_CAST_ALIGN */ 613 w_10 = LOAD_BIG_32(blk + 40); 614 /* LINTED E_BAD_PTR_CAST_ALIGN */ 615 w_9 = LOAD_BIG_32(blk + 36); 616 /* LINTED E_BAD_PTR_CAST_ALIGN */ 617 w_8 = LOAD_BIG_32(blk + 32); 618 /* LINTED E_BAD_PTR_CAST_ALIGN */ 619 w_7 = LOAD_BIG_32(blk + 28); 620 /* LINTED E_BAD_PTR_CAST_ALIGN */ 621 w_6 = LOAD_BIG_32(blk + 24); 622 /* LINTED E_BAD_PTR_CAST_ALIGN */ 623 w_5 = LOAD_BIG_32(blk + 20); 624 /* LINTED E_BAD_PTR_CAST_ALIGN */ 625 w_4 = LOAD_BIG_32(blk + 16); 626 /* LINTED E_BAD_PTR_CAST_ALIGN */ 627 w_3 = LOAD_BIG_32(blk + 12); 628 /* LINTED E_BAD_PTR_CAST_ALIGN */ 629 w_2 = LOAD_BIG_32(blk + 8); 630 /* LINTED E_BAD_PTR_CAST_ALIGN */ 631 w_1 = LOAD_BIG_32(blk + 4); 632 /* LINTED E_BAD_PTR_CAST_ALIGN */ 633 w_0 = LOAD_BIG_32(blk + 0); 634 } 635 #else /* !defined(__sparc) */ 636 637 void /* CSTYLED */ 638 SHA1Transform(SHA1_CTX *ctx, const uint8_t blk[64]) 639 { 640 /* CSTYLED */ 641 sha1word a = ctx->state[0]; 642 sha1word b = ctx->state[1]; 643 sha1word c = ctx->state[2]; 644 sha1word d = ctx->state[3]; 645 sha1word e = ctx->state[4]; 646 647 #if defined(W_ARRAY) 648 sha1word w[16]; 649 #else /* !defined(W_ARRAY) */ 650 sha1word w_0, w_1, w_2, w_3, w_4, w_5, w_6, w_7; 651 sha1word w_8, w_9, w_10, w_11, w_12, w_13, w_14, w_15; 652 #endif /* !defined(W_ARRAY) */ 653 654 W(0) = LOAD_BIG_32((void *)(blk + 0)); 655 W(1) = LOAD_BIG_32((void *)(blk + 4)); 656 W(2) = LOAD_BIG_32((void *)(blk + 8)); 657 W(3) = LOAD_BIG_32((void *)(blk + 12)); 658 W(4) = LOAD_BIG_32((void *)(blk + 16)); 659 W(5) = LOAD_BIG_32((void *)(blk + 20)); 660 W(6) = LOAD_BIG_32((void *)(blk + 24)); 661 W(7) = LOAD_BIG_32((void *)(blk + 28)); 662 W(8) = LOAD_BIG_32((void *)(blk + 32)); 663 W(9) = LOAD_BIG_32((void *)(blk + 36)); 664 W(10) = LOAD_BIG_32((void *)(blk + 40)); 665 W(11) = LOAD_BIG_32((void *)(blk + 44)); 666 W(12) = LOAD_BIG_32((void *)(blk + 48)); 667 W(13) = LOAD_BIG_32((void *)(blk + 52)); 668 W(14) = LOAD_BIG_32((void *)(blk + 56)); 669 W(15) = LOAD_BIG_32((void *)(blk + 60)); 670 671 #endif /* !defined(__sparc) */ 672 673 /* 674 * general optimization: 675 * 676 * even though this approach is described in the standard as 677 * being slower algorithmically, it is 30-40% faster than the 678 * "faster" version under SPARC, because this version has more 679 * of the constraints specified at compile-time and uses fewer 680 * variables (and therefore has better register utilization) 681 * than its "speedier" brother. (i've tried both, trust me) 682 * 683 * for either method given in the spec, there is an "assignment" 684 * phase where the following takes place: 685 * 686 * tmp = (main_computation); 687 * e = d; d = c; c = rotate_left(b, 30); b = a; a = tmp; 688 * 689 * we can make the algorithm go faster by not doing this work, 690 * but just pretending that `d' is now `e', etc. this works 691 * really well and obviates the need for a temporary variable. 692 * however, we still explicitly perform the rotate action, 693 * since it is cheaper on SPARC to do it once than to have to 694 * do it over and over again. 695 */ 696 697 /* round 1 */ 698 e = ROTATE_LEFT(a, 5) + F(b, c, d) + e + W(0) + SHA1_CONST(0); /* 0 */ 699 b = ROTATE_LEFT(b, 30); 700 701 d = ROTATE_LEFT(e, 5) + F(a, b, c) + d + W(1) + SHA1_CONST(0); /* 1 */ 702 a = ROTATE_LEFT(a, 30); 703 704 c = ROTATE_LEFT(d, 5) + F(e, a, b) + c + W(2) + SHA1_CONST(0); /* 2 */ 705 e = ROTATE_LEFT(e, 30); 706 707 b = ROTATE_LEFT(c, 5) + F(d, e, a) + b + W(3) + SHA1_CONST(0); /* 3 */ 708 d = ROTATE_LEFT(d, 30); 709 710 a = ROTATE_LEFT(b, 5) + F(c, d, e) + a + W(4) + SHA1_CONST(0); /* 4 */ 711 c = ROTATE_LEFT(c, 30); 712 713 e = ROTATE_LEFT(a, 5) + F(b, c, d) + e + W(5) + SHA1_CONST(0); /* 5 */ 714 b = ROTATE_LEFT(b, 30); 715 716 d = ROTATE_LEFT(e, 5) + F(a, b, c) + d + W(6) + SHA1_CONST(0); /* 6 */ 717 a = ROTATE_LEFT(a, 30); 718 719 c = ROTATE_LEFT(d, 5) + F(e, a, b) + c + W(7) + SHA1_CONST(0); /* 7 */ 720 e = ROTATE_LEFT(e, 30); 721 722 b = ROTATE_LEFT(c, 5) + F(d, e, a) + b + W(8) + SHA1_CONST(0); /* 8 */ 723 d = ROTATE_LEFT(d, 30); 724 725 a = ROTATE_LEFT(b, 5) + F(c, d, e) + a + W(9) + SHA1_CONST(0); /* 9 */ 726 c = ROTATE_LEFT(c, 30); 727 728 e = ROTATE_LEFT(a, 5) + F(b, c, d) + e + W(10) + SHA1_CONST(0); /* 10 */ 729 b = ROTATE_LEFT(b, 30); 730 731 d = ROTATE_LEFT(e, 5) + F(a, b, c) + d + W(11) + SHA1_CONST(0); /* 11 */ 732 a = ROTATE_LEFT(a, 30); 733 734 c = ROTATE_LEFT(d, 5) + F(e, a, b) + c + W(12) + SHA1_CONST(0); /* 12 */ 735 e = ROTATE_LEFT(e, 30); 736 737 b = ROTATE_LEFT(c, 5) + F(d, e, a) + b + W(13) + SHA1_CONST(0); /* 13 */ 738 d = ROTATE_LEFT(d, 30); 739 740 a = ROTATE_LEFT(b, 5) + F(c, d, e) + a + W(14) + SHA1_CONST(0); /* 14 */ 741 c = ROTATE_LEFT(c, 30); 742 743 e = ROTATE_LEFT(a, 5) + F(b, c, d) + e + W(15) + SHA1_CONST(0); /* 15 */ 744 b = ROTATE_LEFT(b, 30); 745 746 W(0) = ROTATE_LEFT((W(13) ^ W(8) ^ W(2) ^ W(0)), 1); /* 16 */ 747 d = ROTATE_LEFT(e, 5) + F(a, b, c) + d + W(0) + SHA1_CONST(0); 748 a = ROTATE_LEFT(a, 30); 749 750 W(1) = ROTATE_LEFT((W(14) ^ W(9) ^ W(3) ^ W(1)), 1); /* 17 */ 751 c = ROTATE_LEFT(d, 5) + F(e, a, b) + c + W(1) + SHA1_CONST(0); 752 e = ROTATE_LEFT(e, 30); 753 754 W(2) = ROTATE_LEFT((W(15) ^ W(10) ^ W(4) ^ W(2)), 1); /* 18 */ 755 b = ROTATE_LEFT(c, 5) + F(d, e, a) + b + W(2) + SHA1_CONST(0); 756 d = ROTATE_LEFT(d, 30); 757 758 W(3) = ROTATE_LEFT((W(0) ^ W(11) ^ W(5) ^ W(3)), 1); /* 19 */ 759 a = ROTATE_LEFT(b, 5) + F(c, d, e) + a + W(3) + SHA1_CONST(0); 760 c = ROTATE_LEFT(c, 30); 761 762 /* round 2 */ 763 W(4) = ROTATE_LEFT((W(1) ^ W(12) ^ W(6) ^ W(4)), 1); /* 20 */ 764 e = ROTATE_LEFT(a, 5) + G(b, c, d) + e + W(4) + SHA1_CONST(1); 765 b = ROTATE_LEFT(b, 30); 766 767 W(5) = ROTATE_LEFT((W(2) ^ W(13) ^ W(7) ^ W(5)), 1); /* 21 */ 768 d = ROTATE_LEFT(e, 5) + G(a, b, c) + d + W(5) + SHA1_CONST(1); 769 a = ROTATE_LEFT(a, 30); 770 771 W(6) = ROTATE_LEFT((W(3) ^ W(14) ^ W(8) ^ W(6)), 1); /* 22 */ 772 c = ROTATE_LEFT(d, 5) + G(e, a, b) + c + W(6) + SHA1_CONST(1); 773 e = ROTATE_LEFT(e, 30); 774 775 W(7) = ROTATE_LEFT((W(4) ^ W(15) ^ W(9) ^ W(7)), 1); /* 23 */ 776 b = ROTATE_LEFT(c, 5) + G(d, e, a) + b + W(7) + SHA1_CONST(1); 777 d = ROTATE_LEFT(d, 30); 778 779 W(8) = ROTATE_LEFT((W(5) ^ W(0) ^ W(10) ^ W(8)), 1); /* 24 */ 780 a = ROTATE_LEFT(b, 5) + G(c, d, e) + a + W(8) + SHA1_CONST(1); 781 c = ROTATE_LEFT(c, 30); 782 783 W(9) = ROTATE_LEFT((W(6) ^ W(1) ^ W(11) ^ W(9)), 1); /* 25 */ 784 e = ROTATE_LEFT(a, 5) + G(b, c, d) + e + W(9) + SHA1_CONST(1); 785 b = ROTATE_LEFT(b, 30); 786 787 W(10) = ROTATE_LEFT((W(7) ^ W(2) ^ W(12) ^ W(10)), 1); /* 26 */ 788 d = ROTATE_LEFT(e, 5) + G(a, b, c) + d + W(10) + SHA1_CONST(1); 789 a = ROTATE_LEFT(a, 30); 790 791 W(11) = ROTATE_LEFT((W(8) ^ W(3) ^ W(13) ^ W(11)), 1); /* 27 */ 792 c = ROTATE_LEFT(d, 5) + G(e, a, b) + c + W(11) + SHA1_CONST(1); 793 e = ROTATE_LEFT(e, 30); 794 795 W(12) = ROTATE_LEFT((W(9) ^ W(4) ^ W(14) ^ W(12)), 1); /* 28 */ 796 b = ROTATE_LEFT(c, 5) + G(d, e, a) + b + W(12) + SHA1_CONST(1); 797 d = ROTATE_LEFT(d, 30); 798 799 W(13) = ROTATE_LEFT((W(10) ^ W(5) ^ W(15) ^ W(13)), 1); /* 29 */ 800 a = ROTATE_LEFT(b, 5) + G(c, d, e) + a + W(13) + SHA1_CONST(1); 801 c = ROTATE_LEFT(c, 30); 802 803 W(14) = ROTATE_LEFT((W(11) ^ W(6) ^ W(0) ^ W(14)), 1); /* 30 */ 804 e = ROTATE_LEFT(a, 5) + G(b, c, d) + e + W(14) + SHA1_CONST(1); 805 b = ROTATE_LEFT(b, 30); 806 807 W(15) = ROTATE_LEFT((W(12) ^ W(7) ^ W(1) ^ W(15)), 1); /* 31 */ 808 d = ROTATE_LEFT(e, 5) + G(a, b, c) + d + W(15) + SHA1_CONST(1); 809 a = ROTATE_LEFT(a, 30); 810 811 W(0) = ROTATE_LEFT((W(13) ^ W(8) ^ W(2) ^ W(0)), 1); /* 32 */ 812 c = ROTATE_LEFT(d, 5) + G(e, a, b) + c + W(0) + SHA1_CONST(1); 813 e = ROTATE_LEFT(e, 30); 814 815 W(1) = ROTATE_LEFT((W(14) ^ W(9) ^ W(3) ^ W(1)), 1); /* 33 */ 816 b = ROTATE_LEFT(c, 5) + G(d, e, a) + b + W(1) + SHA1_CONST(1); 817 d = ROTATE_LEFT(d, 30); 818 819 W(2) = ROTATE_LEFT((W(15) ^ W(10) ^ W(4) ^ W(2)), 1); /* 34 */ 820 a = ROTATE_LEFT(b, 5) + G(c, d, e) + a + W(2) + SHA1_CONST(1); 821 c = ROTATE_LEFT(c, 30); 822 823 W(3) = ROTATE_LEFT((W(0) ^ W(11) ^ W(5) ^ W(3)), 1); /* 35 */ 824 e = ROTATE_LEFT(a, 5) + G(b, c, d) + e + W(3) + SHA1_CONST(1); 825 b = ROTATE_LEFT(b, 30); 826 827 W(4) = ROTATE_LEFT((W(1) ^ W(12) ^ W(6) ^ W(4)), 1); /* 36 */ 828 d = ROTATE_LEFT(e, 5) + G(a, b, c) + d + W(4) + SHA1_CONST(1); 829 a = ROTATE_LEFT(a, 30); 830 831 W(5) = ROTATE_LEFT((W(2) ^ W(13) ^ W(7) ^ W(5)), 1); /* 37 */ 832 c = ROTATE_LEFT(d, 5) + G(e, a, b) + c + W(5) + SHA1_CONST(1); 833 e = ROTATE_LEFT(e, 30); 834 835 W(6) = ROTATE_LEFT((W(3) ^ W(14) ^ W(8) ^ W(6)), 1); /* 38 */ 836 b = ROTATE_LEFT(c, 5) + G(d, e, a) + b + W(6) + SHA1_CONST(1); 837 d = ROTATE_LEFT(d, 30); 838 839 W(7) = ROTATE_LEFT((W(4) ^ W(15) ^ W(9) ^ W(7)), 1); /* 39 */ 840 a = ROTATE_LEFT(b, 5) + G(c, d, e) + a + W(7) + SHA1_CONST(1); 841 c = ROTATE_LEFT(c, 30); 842 843 /* round 3 */ 844 W(8) = ROTATE_LEFT((W(5) ^ W(0) ^ W(10) ^ W(8)), 1); /* 40 */ 845 e = ROTATE_LEFT(a, 5) + H(b, c, d) + e + W(8) + SHA1_CONST(2); 846 b = ROTATE_LEFT(b, 30); 847 848 W(9) = ROTATE_LEFT((W(6) ^ W(1) ^ W(11) ^ W(9)), 1); /* 41 */ 849 d = ROTATE_LEFT(e, 5) + H(a, b, c) + d + W(9) + SHA1_CONST(2); 850 a = ROTATE_LEFT(a, 30); 851 852 W(10) = ROTATE_LEFT((W(7) ^ W(2) ^ W(12) ^ W(10)), 1); /* 42 */ 853 c = ROTATE_LEFT(d, 5) + H(e, a, b) + c + W(10) + SHA1_CONST(2); 854 e = ROTATE_LEFT(e, 30); 855 856 W(11) = ROTATE_LEFT((W(8) ^ W(3) ^ W(13) ^ W(11)), 1); /* 43 */ 857 b = ROTATE_LEFT(c, 5) + H(d, e, a) + b + W(11) + SHA1_CONST(2); 858 d = ROTATE_LEFT(d, 30); 859 860 W(12) = ROTATE_LEFT((W(9) ^ W(4) ^ W(14) ^ W(12)), 1); /* 44 */ 861 a = ROTATE_LEFT(b, 5) + H(c, d, e) + a + W(12) + SHA1_CONST(2); 862 c = ROTATE_LEFT(c, 30); 863 864 W(13) = ROTATE_LEFT((W(10) ^ W(5) ^ W(15) ^ W(13)), 1); /* 45 */ 865 e = ROTATE_LEFT(a, 5) + H(b, c, d) + e + W(13) + SHA1_CONST(2); 866 b = ROTATE_LEFT(b, 30); 867 868 W(14) = ROTATE_LEFT((W(11) ^ W(6) ^ W(0) ^ W(14)), 1); /* 46 */ 869 d = ROTATE_LEFT(e, 5) + H(a, b, c) + d + W(14) + SHA1_CONST(2); 870 a = ROTATE_LEFT(a, 30); 871 872 W(15) = ROTATE_LEFT((W(12) ^ W(7) ^ W(1) ^ W(15)), 1); /* 47 */ 873 c = ROTATE_LEFT(d, 5) + H(e, a, b) + c + W(15) + SHA1_CONST(2); 874 e = ROTATE_LEFT(e, 30); 875 876 W(0) = ROTATE_LEFT((W(13) ^ W(8) ^ W(2) ^ W(0)), 1); /* 48 */ 877 b = ROTATE_LEFT(c, 5) + H(d, e, a) + b + W(0) + SHA1_CONST(2); 878 d = ROTATE_LEFT(d, 30); 879 880 W(1) = ROTATE_LEFT((W(14) ^ W(9) ^ W(3) ^ W(1)), 1); /* 49 */ 881 a = ROTATE_LEFT(b, 5) + H(c, d, e) + a + W(1) + SHA1_CONST(2); 882 c = ROTATE_LEFT(c, 30); 883 884 W(2) = ROTATE_LEFT((W(15) ^ W(10) ^ W(4) ^ W(2)), 1); /* 50 */ 885 e = ROTATE_LEFT(a, 5) + H(b, c, d) + e + W(2) + SHA1_CONST(2); 886 b = ROTATE_LEFT(b, 30); 887 888 W(3) = ROTATE_LEFT((W(0) ^ W(11) ^ W(5) ^ W(3)), 1); /* 51 */ 889 d = ROTATE_LEFT(e, 5) + H(a, b, c) + d + W(3) + SHA1_CONST(2); 890 a = ROTATE_LEFT(a, 30); 891 892 W(4) = ROTATE_LEFT((W(1) ^ W(12) ^ W(6) ^ W(4)), 1); /* 52 */ 893 c = ROTATE_LEFT(d, 5) + H(e, a, b) + c + W(4) + SHA1_CONST(2); 894 e = ROTATE_LEFT(e, 30); 895 896 W(5) = ROTATE_LEFT((W(2) ^ W(13) ^ W(7) ^ W(5)), 1); /* 53 */ 897 b = ROTATE_LEFT(c, 5) + H(d, e, a) + b + W(5) + SHA1_CONST(2); 898 d = ROTATE_LEFT(d, 30); 899 900 W(6) = ROTATE_LEFT((W(3) ^ W(14) ^ W(8) ^ W(6)), 1); /* 54 */ 901 a = ROTATE_LEFT(b, 5) + H(c, d, e) + a + W(6) + SHA1_CONST(2); 902 c = ROTATE_LEFT(c, 30); 903 904 W(7) = ROTATE_LEFT((W(4) ^ W(15) ^ W(9) ^ W(7)), 1); /* 55 */ 905 e = ROTATE_LEFT(a, 5) + H(b, c, d) + e + W(7) + SHA1_CONST(2); 906 b = ROTATE_LEFT(b, 30); 907 908 W(8) = ROTATE_LEFT((W(5) ^ W(0) ^ W(10) ^ W(8)), 1); /* 56 */ 909 d = ROTATE_LEFT(e, 5) + H(a, b, c) + d + W(8) + SHA1_CONST(2); 910 a = ROTATE_LEFT(a, 30); 911 912 W(9) = ROTATE_LEFT((W(6) ^ W(1) ^ W(11) ^ W(9)), 1); /* 57 */ 913 c = ROTATE_LEFT(d, 5) + H(e, a, b) + c + W(9) + SHA1_CONST(2); 914 e = ROTATE_LEFT(e, 30); 915 916 W(10) = ROTATE_LEFT((W(7) ^ W(2) ^ W(12) ^ W(10)), 1); /* 58 */ 917 b = ROTATE_LEFT(c, 5) + H(d, e, a) + b + W(10) + SHA1_CONST(2); 918 d = ROTATE_LEFT(d, 30); 919 920 W(11) = ROTATE_LEFT((W(8) ^ W(3) ^ W(13) ^ W(11)), 1); /* 59 */ 921 a = ROTATE_LEFT(b, 5) + H(c, d, e) + a + W(11) + SHA1_CONST(2); 922 c = ROTATE_LEFT(c, 30); 923 924 /* round 4 */ 925 W(12) = ROTATE_LEFT((W(9) ^ W(4) ^ W(14) ^ W(12)), 1); /* 60 */ 926 e = ROTATE_LEFT(a, 5) + G(b, c, d) + e + W(12) + SHA1_CONST(3); 927 b = ROTATE_LEFT(b, 30); 928 929 W(13) = ROTATE_LEFT((W(10) ^ W(5) ^ W(15) ^ W(13)), 1); /* 61 */ 930 d = ROTATE_LEFT(e, 5) + G(a, b, c) + d + W(13) + SHA1_CONST(3); 931 a = ROTATE_LEFT(a, 30); 932 933 W(14) = ROTATE_LEFT((W(11) ^ W(6) ^ W(0) ^ W(14)), 1); /* 62 */ 934 c = ROTATE_LEFT(d, 5) + G(e, a, b) + c + W(14) + SHA1_CONST(3); 935 e = ROTATE_LEFT(e, 30); 936 937 W(15) = ROTATE_LEFT((W(12) ^ W(7) ^ W(1) ^ W(15)), 1); /* 63 */ 938 b = ROTATE_LEFT(c, 5) + G(d, e, a) + b + W(15) + SHA1_CONST(3); 939 d = ROTATE_LEFT(d, 30); 940 941 W(0) = ROTATE_LEFT((W(13) ^ W(8) ^ W(2) ^ W(0)), 1); /* 64 */ 942 a = ROTATE_LEFT(b, 5) + G(c, d, e) + a + W(0) + SHA1_CONST(3); 943 c = ROTATE_LEFT(c, 30); 944 945 W(1) = ROTATE_LEFT((W(14) ^ W(9) ^ W(3) ^ W(1)), 1); /* 65 */ 946 e = ROTATE_LEFT(a, 5) + G(b, c, d) + e + W(1) + SHA1_CONST(3); 947 b = ROTATE_LEFT(b, 30); 948 949 W(2) = ROTATE_LEFT((W(15) ^ W(10) ^ W(4) ^ W(2)), 1); /* 66 */ 950 d = ROTATE_LEFT(e, 5) + G(a, b, c) + d + W(2) + SHA1_CONST(3); 951 a = ROTATE_LEFT(a, 30); 952 953 W(3) = ROTATE_LEFT((W(0) ^ W(11) ^ W(5) ^ W(3)), 1); /* 67 */ 954 c = ROTATE_LEFT(d, 5) + G(e, a, b) + c + W(3) + SHA1_CONST(3); 955 e = ROTATE_LEFT(e, 30); 956 957 W(4) = ROTATE_LEFT((W(1) ^ W(12) ^ W(6) ^ W(4)), 1); /* 68 */ 958 b = ROTATE_LEFT(c, 5) + G(d, e, a) + b + W(4) + SHA1_CONST(3); 959 d = ROTATE_LEFT(d, 30); 960 961 W(5) = ROTATE_LEFT((W(2) ^ W(13) ^ W(7) ^ W(5)), 1); /* 69 */ 962 a = ROTATE_LEFT(b, 5) + G(c, d, e) + a + W(5) + SHA1_CONST(3); 963 c = ROTATE_LEFT(c, 30); 964 965 W(6) = ROTATE_LEFT((W(3) ^ W(14) ^ W(8) ^ W(6)), 1); /* 70 */ 966 e = ROTATE_LEFT(a, 5) + G(b, c, d) + e + W(6) + SHA1_CONST(3); 967 b = ROTATE_LEFT(b, 30); 968 969 W(7) = ROTATE_LEFT((W(4) ^ W(15) ^ W(9) ^ W(7)), 1); /* 71 */ 970 d = ROTATE_LEFT(e, 5) + G(a, b, c) + d + W(7) + SHA1_CONST(3); 971 a = ROTATE_LEFT(a, 30); 972 973 W(8) = ROTATE_LEFT((W(5) ^ W(0) ^ W(10) ^ W(8)), 1); /* 72 */ 974 c = ROTATE_LEFT(d, 5) + G(e, a, b) + c + W(8) + SHA1_CONST(3); 975 e = ROTATE_LEFT(e, 30); 976 977 W(9) = ROTATE_LEFT((W(6) ^ W(1) ^ W(11) ^ W(9)), 1); /* 73 */ 978 b = ROTATE_LEFT(c, 5) + G(d, e, a) + b + W(9) + SHA1_CONST(3); 979 d = ROTATE_LEFT(d, 30); 980 981 W(10) = ROTATE_LEFT((W(7) ^ W(2) ^ W(12) ^ W(10)), 1); /* 74 */ 982 a = ROTATE_LEFT(b, 5) + G(c, d, e) + a + W(10) + SHA1_CONST(3); 983 c = ROTATE_LEFT(c, 30); 984 985 W(11) = ROTATE_LEFT((W(8) ^ W(3) ^ W(13) ^ W(11)), 1); /* 75 */ 986 e = ROTATE_LEFT(a, 5) + G(b, c, d) + e + W(11) + SHA1_CONST(3); 987 b = ROTATE_LEFT(b, 30); 988 989 W(12) = ROTATE_LEFT((W(9) ^ W(4) ^ W(14) ^ W(12)), 1); /* 76 */ 990 d = ROTATE_LEFT(e, 5) + G(a, b, c) + d + W(12) + SHA1_CONST(3); 991 a = ROTATE_LEFT(a, 30); 992 993 W(13) = ROTATE_LEFT((W(10) ^ W(5) ^ W(15) ^ W(13)), 1); /* 77 */ 994 c = ROTATE_LEFT(d, 5) + G(e, a, b) + c + W(13) + SHA1_CONST(3); 995 e = ROTATE_LEFT(e, 30); 996 997 W(14) = ROTATE_LEFT((W(11) ^ W(6) ^ W(0) ^ W(14)), 1); /* 78 */ 998 b = ROTATE_LEFT(c, 5) + G(d, e, a) + b + W(14) + SHA1_CONST(3); 999 d = ROTATE_LEFT(d, 30); 1000 1001 W(15) = ROTATE_LEFT((W(12) ^ W(7) ^ W(1) ^ W(15)), 1); /* 79 */ 1002 1003 ctx->state[0] += ROTATE_LEFT(b, 5) + G(c, d, e) + a + W(15) + 1004 SHA1_CONST(3); 1005 ctx->state[1] += b; 1006 ctx->state[2] += ROTATE_LEFT(c, 30); 1007 ctx->state[3] += d; 1008 ctx->state[4] += e; 1009 1010 /* zeroize sensitive information */ 1011 W(0) = W(1) = W(2) = W(3) = W(4) = W(5) = W(6) = W(7) = W(8) = 0; 1012 W(9) = W(10) = W(11) = W(12) = W(13) = W(14) = W(15) = 0; 1013 } 1014 #endif /* !__amd64 */ 1015 1016 1017 /* 1018 * Encode() 1019 * 1020 * purpose: to convert a list of numbers from little endian to big endian 1021 * input: uint8_t * : place to store the converted big endian numbers 1022 * uint32_t * : place to get numbers to convert from 1023 * size_t : the length of the input in bytes 1024 * output: void 1025 */ 1026 1027 static void 1028 Encode(uint8_t *_RESTRICT_KYWD output, const uint32_t *_RESTRICT_KYWD input, 1029 size_t len) 1030 { 1031 size_t i, j; 1032 1033 #if defined(__sparc) 1034 if (IS_P2ALIGNED(output, sizeof (uint32_t))) { 1035 for (i = 0, j = 0; j < len; i++, j += 4) { 1036 /* LINTED E_BAD_PTR_CAST_ALIGN */ 1037 *((uint32_t *)(output + j)) = input[i]; 1038 } 1039 } else { 1040 #endif /* little endian -- will work on big endian, but slowly */ 1041 for (i = 0, j = 0; j < len; i++, j += 4) { 1042 output[j] = (input[i] >> 24) & 0xff; 1043 output[j + 1] = (input[i] >> 16) & 0xff; 1044 output[j + 2] = (input[i] >> 8) & 0xff; 1045 output[j + 3] = input[i] & 0xff; 1046 } 1047 #if defined(__sparc) 1048 } 1049 #endif 1050 } 1051