Annotation of embedaddon/ntp/lib/isc/sha2.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2005-2007, 2009 Internet Systems Consortium, Inc. ("ISC")
! 3: *
! 4: * Permission to use, copy, modify, and/or distribute this software for any
! 5: * purpose with or without fee is hereby granted, provided that the above
! 6: * copyright notice and this permission notice appear in all copies.
! 7: *
! 8: * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
! 9: * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
! 10: * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
! 11: * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
! 12: * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
! 13: * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
! 14: * PERFORMANCE OF THIS SOFTWARE.
! 15: */
! 16:
! 17: /* $Id: sha2.c,v 1.13.332.2 2009/01/18 23:47:41 tbox Exp $ */
! 18:
! 19: /* $FreeBSD: src/sys/crypto/sha2/sha2.c,v 1.2.2.2 2002/03/05 08:36:47 ume Exp $ */
! 20: /* $KAME: sha2.c,v 1.8 2001/11/08 01:07:52 itojun Exp $ */
! 21:
! 22: /*
! 23: * sha2.c
! 24: *
! 25: * Version 1.0.0beta1
! 26: *
! 27: * Written by Aaron D. Gifford <me@aarongifford.com>
! 28: *
! 29: * Copyright 2000 Aaron D. Gifford. All rights reserved.
! 30: *
! 31: * Redistribution and use in source and binary forms, with or without
! 32: * modification, are permitted provided that the following conditions
! 33: * are met:
! 34: * 1. Redistributions of source code must retain the above copyright
! 35: * notice, this list of conditions and the following disclaimer.
! 36: * 2. Redistributions in binary form must reproduce the above copyright
! 37: * notice, this list of conditions and the following disclaimer in the
! 38: * documentation and/or other materials provided with the distribution.
! 39: * 3. Neither the name of the copyright holder nor the names of contributors
! 40: * may be used to endorse or promote products derived from this software
! 41: * without specific prior written permission.
! 42: *
! 43: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTOR(S) ``AS IS'' AND
! 44: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 45: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 46: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTOR(S) BE LIABLE
! 47: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 48: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 49: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 50: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 51: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 52: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 53: * SUCH DAMAGE.
! 54: *
! 55: */
! 56:
! 57:
! 58: #include <config.h>
! 59:
! 60: #include <isc/assertions.h>
! 61: #include <isc/sha2.h>
! 62: #include <isc/string.h>
! 63: #include <isc/util.h>
! 64:
! 65: /*
! 66: * UNROLLED TRANSFORM LOOP NOTE:
! 67: * You can define SHA2_UNROLL_TRANSFORM to use the unrolled transform
! 68: * loop version for the hash transform rounds (defined using macros
! 69: * later in this file). Either define on the command line, for example:
! 70: *
! 71: * cc -DISC_SHA2_UNROLL_TRANSFORM -o sha2 sha2.c sha2prog.c
! 72: *
! 73: * or define below:
! 74: *
! 75: * \#define ISC_SHA2_UNROLL_TRANSFORM
! 76: *
! 77: */
! 78:
! 79: /*** SHA-256/384/512 Machine Architecture Definitions *****************/
! 80: /*
! 81: * BYTE_ORDER NOTE:
! 82: *
! 83: * Please make sure that your system defines BYTE_ORDER. If your
! 84: * architecture is little-endian, make sure it also defines
! 85: * LITTLE_ENDIAN and that the two (BYTE_ORDER and LITTLE_ENDIAN) are
! 86: * equivalent.
! 87: *
! 88: * If your system does not define the above, then you can do so by
! 89: * hand like this:
! 90: *
! 91: * \#define LITTLE_ENDIAN 1234
! 92: * \#define BIG_ENDIAN 4321
! 93: *
! 94: * And for little-endian machines, add:
! 95: *
! 96: * \#define BYTE_ORDER LITTLE_ENDIAN
! 97: *
! 98: * Or for big-endian machines:
! 99: *
! 100: * \#define BYTE_ORDER BIG_ENDIAN
! 101: *
! 102: * The FreeBSD machine this was written on defines BYTE_ORDER
! 103: * appropriately by including <sys/types.h> (which in turn includes
! 104: * <machine/endian.h> where the appropriate definitions are actually
! 105: * made).
! 106: */
! 107: #if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
! 108: #ifndef BYTE_ORDER
! 109: #ifndef BIG_ENDIAN
! 110: #define BIG_ENDIAN 4321
! 111: #endif
! 112: #ifndef LITTLE_ENDIAN
! 113: #define LITTLE_ENDIAN 1234
! 114: #endif
! 115: #ifdef WORDS_BIGENDIAN
! 116: #define BYTE_ORDER BIG_ENDIAN
! 117: #else
! 118: #define BYTE_ORDER LITTLE_ENDIAN
! 119: #endif
! 120: #else
! 121: #error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
! 122: #endif
! 123: #endif
! 124:
! 125: /*** SHA-256/384/512 Various Length Definitions ***********************/
! 126: /* NOTE: Most of these are in sha2.h */
! 127: #define ISC_SHA256_SHORT_BLOCK_LENGTH (ISC_SHA256_BLOCK_LENGTH - 8)
! 128: #define ISC_SHA384_SHORT_BLOCK_LENGTH (ISC_SHA384_BLOCK_LENGTH - 16)
! 129: #define ISC_SHA512_SHORT_BLOCK_LENGTH (ISC_SHA512_BLOCK_LENGTH - 16)
! 130:
! 131:
! 132: /*** ENDIAN REVERSAL MACROS *******************************************/
! 133: #if BYTE_ORDER == LITTLE_ENDIAN
! 134: #define REVERSE32(w,x) { \
! 135: isc_uint32_t tmp = (w); \
! 136: tmp = (tmp >> 16) | (tmp << 16); \
! 137: (x) = ((tmp & 0xff00ff00UL) >> 8) | ((tmp & 0x00ff00ffUL) << 8); \
! 138: }
! 139: #ifdef WIN32
! 140: #define REVERSE64(w,x) { \
! 141: isc_uint64_t tmp = (w); \
! 142: tmp = (tmp >> 32) | (tmp << 32); \
! 143: tmp = ((tmp & 0xff00ff00ff00ff00UL) >> 8) | \
! 144: ((tmp & 0x00ff00ff00ff00ffUL) << 8); \
! 145: (x) = ((tmp & 0xffff0000ffff0000UL) >> 16) | \
! 146: ((tmp & 0x0000ffff0000ffffUL) << 16); \
! 147: }
! 148: #else
! 149: #define REVERSE64(w,x) { \
! 150: isc_uint64_t tmp = (w); \
! 151: tmp = (tmp >> 32) | (tmp << 32); \
! 152: tmp = ((tmp & 0xff00ff00ff00ff00ULL) >> 8) | \
! 153: ((tmp & 0x00ff00ff00ff00ffULL) << 8); \
! 154: (x) = ((tmp & 0xffff0000ffff0000ULL) >> 16) | \
! 155: ((tmp & 0x0000ffff0000ffffULL) << 16); \
! 156: }
! 157: #endif
! 158: #endif /* BYTE_ORDER == LITTLE_ENDIAN */
! 159:
! 160: /*
! 161: * Macro for incrementally adding the unsigned 64-bit integer n to the
! 162: * unsigned 128-bit integer (represented using a two-element array of
! 163: * 64-bit words):
! 164: */
! 165: #define ADDINC128(w,n) { \
! 166: (w)[0] += (isc_uint64_t)(n); \
! 167: if ((w)[0] < (n)) { \
! 168: (w)[1]++; \
! 169: } \
! 170: }
! 171:
! 172: /*** THE SIX LOGICAL FUNCTIONS ****************************************/
! 173: /*
! 174: * Bit shifting and rotation (used by the six SHA-XYZ logical functions:
! 175: *
! 176: * NOTE: The naming of R and S appears backwards here (R is a SHIFT and
! 177: * S is a ROTATION) because the SHA-256/384/512 description document
! 178: * (see http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf) uses this
! 179: * same "backwards" definition.
! 180: */
! 181: /* Shift-right (used in SHA-256, SHA-384, and SHA-512): */
! 182: #define R(b,x) ((x) >> (b))
! 183: /* 32-bit Rotate-right (used in SHA-256): */
! 184: #define S32(b,x) (((x) >> (b)) | ((x) << (32 - (b))))
! 185: /* 64-bit Rotate-right (used in SHA-384 and SHA-512): */
! 186: #define S64(b,x) (((x) >> (b)) | ((x) << (64 - (b))))
! 187:
! 188: /* Two of six logical functions used in SHA-256, SHA-384, and SHA-512: */
! 189: #define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
! 190: #define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
! 191:
! 192: /* Four of six logical functions used in SHA-256: */
! 193: #define Sigma0_256(x) (S32(2, (x)) ^ S32(13, (x)) ^ S32(22, (x)))
! 194: #define Sigma1_256(x) (S32(6, (x)) ^ S32(11, (x)) ^ S32(25, (x)))
! 195: #define sigma0_256(x) (S32(7, (x)) ^ S32(18, (x)) ^ R(3 , (x)))
! 196: #define sigma1_256(x) (S32(17, (x)) ^ S32(19, (x)) ^ R(10, (x)))
! 197:
! 198: /* Four of six logical functions used in SHA-384 and SHA-512: */
! 199: #define Sigma0_512(x) (S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x)))
! 200: #define Sigma1_512(x) (S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x)))
! 201: #define sigma0_512(x) (S64( 1, (x)) ^ S64( 8, (x)) ^ R( 7, (x)))
! 202: #define sigma1_512(x) (S64(19, (x)) ^ S64(61, (x)) ^ R( 6, (x)))
! 203:
! 204: /*** INTERNAL FUNCTION PROTOTYPES *************************************/
! 205: /* NOTE: These should not be accessed directly from outside this
! 206: * library -- they are intended for private internal visibility/use
! 207: * only.
! 208: */
! 209: void isc_sha512_last(isc_sha512_t *);
! 210: void isc_sha256_transform(isc_sha256_t *, const isc_uint32_t*);
! 211: void isc_sha512_transform(isc_sha512_t *, const isc_uint64_t*);
! 212:
! 213:
! 214: /*** SHA-XYZ INITIAL HASH VALUES AND CONSTANTS ************************/
! 215: /* Hash constant words K for SHA-224 and SHA-256: */
! 216: static const isc_uint32_t K256[64] = {
! 217: 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
! 218: 0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
! 219: 0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
! 220: 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
! 221: 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
! 222: 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
! 223: 0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
! 224: 0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
! 225: 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
! 226: 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
! 227: 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
! 228: 0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
! 229: 0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
! 230: 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
! 231: 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
! 232: 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
! 233: };
! 234:
! 235: /* Initial hash value H for SHA-224: */
! 236: static const isc_uint32_t sha224_initial_hash_value[8] = {
! 237: 0xc1059ed8UL,
! 238: 0x367cd507UL,
! 239: 0x3070dd17UL,
! 240: 0xf70e5939UL,
! 241: 0xffc00b31UL,
! 242: 0x68581511UL,
! 243: 0x64f98fa7UL,
! 244: 0xbefa4fa4UL
! 245: };
! 246:
! 247: /* Initial hash value H for SHA-256: */
! 248: static const isc_uint32_t sha256_initial_hash_value[8] = {
! 249: 0x6a09e667UL,
! 250: 0xbb67ae85UL,
! 251: 0x3c6ef372UL,
! 252: 0xa54ff53aUL,
! 253: 0x510e527fUL,
! 254: 0x9b05688cUL,
! 255: 0x1f83d9abUL,
! 256: 0x5be0cd19UL
! 257: };
! 258:
! 259: #ifdef WIN32
! 260: /* Hash constant words K for SHA-384 and SHA-512: */
! 261: static const isc_uint64_t K512[80] = {
! 262: 0x428a2f98d728ae22UL, 0x7137449123ef65cdUL,
! 263: 0xb5c0fbcfec4d3b2fUL, 0xe9b5dba58189dbbcUL,
! 264: 0x3956c25bf348b538UL, 0x59f111f1b605d019UL,
! 265: 0x923f82a4af194f9bUL, 0xab1c5ed5da6d8118UL,
! 266: 0xd807aa98a3030242UL, 0x12835b0145706fbeUL,
! 267: 0x243185be4ee4b28cUL, 0x550c7dc3d5ffb4e2UL,
! 268: 0x72be5d74f27b896fUL, 0x80deb1fe3b1696b1UL,
! 269: 0x9bdc06a725c71235UL, 0xc19bf174cf692694UL,
! 270: 0xe49b69c19ef14ad2UL, 0xefbe4786384f25e3UL,
! 271: 0x0fc19dc68b8cd5b5UL, 0x240ca1cc77ac9c65UL,
! 272: 0x2de92c6f592b0275UL, 0x4a7484aa6ea6e483UL,
! 273: 0x5cb0a9dcbd41fbd4UL, 0x76f988da831153b5UL,
! 274: 0x983e5152ee66dfabUL, 0xa831c66d2db43210UL,
! 275: 0xb00327c898fb213fUL, 0xbf597fc7beef0ee4UL,
! 276: 0xc6e00bf33da88fc2UL, 0xd5a79147930aa725UL,
! 277: 0x06ca6351e003826fUL, 0x142929670a0e6e70UL,
! 278: 0x27b70a8546d22ffcUL, 0x2e1b21385c26c926UL,
! 279: 0x4d2c6dfc5ac42aedUL, 0x53380d139d95b3dfUL,
! 280: 0x650a73548baf63deUL, 0x766a0abb3c77b2a8UL,
! 281: 0x81c2c92e47edaee6UL, 0x92722c851482353bUL,
! 282: 0xa2bfe8a14cf10364UL, 0xa81a664bbc423001UL,
! 283: 0xc24b8b70d0f89791UL, 0xc76c51a30654be30UL,
! 284: 0xd192e819d6ef5218UL, 0xd69906245565a910UL,
! 285: 0xf40e35855771202aUL, 0x106aa07032bbd1b8UL,
! 286: 0x19a4c116b8d2d0c8UL, 0x1e376c085141ab53UL,
! 287: 0x2748774cdf8eeb99UL, 0x34b0bcb5e19b48a8UL,
! 288: 0x391c0cb3c5c95a63UL, 0x4ed8aa4ae3418acbUL,
! 289: 0x5b9cca4f7763e373UL, 0x682e6ff3d6b2b8a3UL,
! 290: 0x748f82ee5defb2fcUL, 0x78a5636f43172f60UL,
! 291: 0x84c87814a1f0ab72UL, 0x8cc702081a6439ecUL,
! 292: 0x90befffa23631e28UL, 0xa4506cebde82bde9UL,
! 293: 0xbef9a3f7b2c67915UL, 0xc67178f2e372532bUL,
! 294: 0xca273eceea26619cUL, 0xd186b8c721c0c207UL,
! 295: 0xeada7dd6cde0eb1eUL, 0xf57d4f7fee6ed178UL,
! 296: 0x06f067aa72176fbaUL, 0x0a637dc5a2c898a6UL,
! 297: 0x113f9804bef90daeUL, 0x1b710b35131c471bUL,
! 298: 0x28db77f523047d84UL, 0x32caab7b40c72493UL,
! 299: 0x3c9ebe0a15c9bebcUL, 0x431d67c49c100d4cUL,
! 300: 0x4cc5d4becb3e42b6UL, 0x597f299cfc657e2aUL,
! 301: 0x5fcb6fab3ad6faecUL, 0x6c44198c4a475817UL
! 302: };
! 303:
! 304: /* Initial hash value H for SHA-384: */
! 305: static const isc_uint64_t sha384_initial_hash_value[8] = {
! 306: 0xcbbb9d5dc1059ed8UL,
! 307: 0x629a292a367cd507UL,
! 308: 0x9159015a3070dd17UL,
! 309: 0x152fecd8f70e5939UL,
! 310: 0x67332667ffc00b31UL,
! 311: 0x8eb44a8768581511UL,
! 312: 0xdb0c2e0d64f98fa7UL,
! 313: 0x47b5481dbefa4fa4UL
! 314: };
! 315:
! 316: /* Initial hash value H for SHA-512: */
! 317: static const isc_uint64_t sha512_initial_hash_value[8] = {
! 318: 0x6a09e667f3bcc908U,
! 319: 0xbb67ae8584caa73bUL,
! 320: 0x3c6ef372fe94f82bUL,
! 321: 0xa54ff53a5f1d36f1UL,
! 322: 0x510e527fade682d1UL,
! 323: 0x9b05688c2b3e6c1fUL,
! 324: 0x1f83d9abfb41bd6bUL,
! 325: 0x5be0cd19137e2179UL
! 326: };
! 327: #else
! 328: /* Hash constant words K for SHA-384 and SHA-512: */
! 329: static const isc_uint64_t K512[80] = {
! 330: 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
! 331: 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
! 332: 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
! 333: 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
! 334: 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
! 335: 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
! 336: 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
! 337: 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
! 338: 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
! 339: 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
! 340: 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
! 341: 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
! 342: 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
! 343: 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
! 344: 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
! 345: 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
! 346: 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
! 347: 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
! 348: 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
! 349: 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
! 350: 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
! 351: 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
! 352: 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
! 353: 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
! 354: 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
! 355: 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
! 356: 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
! 357: 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
! 358: 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
! 359: 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
! 360: 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
! 361: 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
! 362: 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
! 363: 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
! 364: 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
! 365: 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
! 366: 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
! 367: 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
! 368: 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
! 369: 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
! 370: };
! 371:
! 372: /* Initial hash value H for SHA-384: */
! 373: static const isc_uint64_t sha384_initial_hash_value[8] = {
! 374: 0xcbbb9d5dc1059ed8ULL,
! 375: 0x629a292a367cd507ULL,
! 376: 0x9159015a3070dd17ULL,
! 377: 0x152fecd8f70e5939ULL,
! 378: 0x67332667ffc00b31ULL,
! 379: 0x8eb44a8768581511ULL,
! 380: 0xdb0c2e0d64f98fa7ULL,
! 381: 0x47b5481dbefa4fa4ULL
! 382: };
! 383:
! 384: /* Initial hash value H for SHA-512: */
! 385: static const isc_uint64_t sha512_initial_hash_value[8] = {
! 386: 0x6a09e667f3bcc908ULL,
! 387: 0xbb67ae8584caa73bULL,
! 388: 0x3c6ef372fe94f82bULL,
! 389: 0xa54ff53a5f1d36f1ULL,
! 390: 0x510e527fade682d1ULL,
! 391: 0x9b05688c2b3e6c1fULL,
! 392: 0x1f83d9abfb41bd6bULL,
! 393: 0x5be0cd19137e2179ULL
! 394: };
! 395: #endif
! 396:
! 397: /*
! 398: * Constant used by SHA256/384/512_End() functions for converting the
! 399: * digest to a readable hexadecimal character string:
! 400: */
! 401: static const char *sha2_hex_digits = "0123456789abcdef";
! 402:
! 403:
! 404:
! 405: /*** SHA-224: *********************************************************/
! 406: void
! 407: isc_sha224_init(isc_sha224_t *context) {
! 408: if (context == (isc_sha256_t *)0) {
! 409: return;
! 410: }
! 411: memcpy(context->state, sha224_initial_hash_value,
! 412: ISC_SHA256_DIGESTLENGTH);
! 413: memset(context->buffer, 0, ISC_SHA256_BLOCK_LENGTH);
! 414: context->bitcount = 0;
! 415: }
! 416:
! 417: void
! 418: isc_sha224_update(isc_sha224_t *context, const isc_uint8_t* data, size_t len) {
! 419: isc_sha256_update((isc_sha256_t *)context, data, len);
! 420: }
! 421:
! 422: void
! 423: isc_sha224_final(isc_uint8_t digest[], isc_sha224_t *context) {
! 424: isc_uint8_t sha256_digest[ISC_SHA256_DIGESTLENGTH];
! 425: isc_sha256_final(sha256_digest, (isc_sha256_t *)context);
! 426: memcpy(digest, sha256_digest, ISC_SHA224_DIGESTLENGTH);
! 427: memset(sha256_digest, 0, ISC_SHA256_DIGESTLENGTH);
! 428: }
! 429:
! 430: char *
! 431: isc_sha224_end(isc_sha224_t *context, char buffer[]) {
! 432: isc_uint8_t digest[ISC_SHA224_DIGESTLENGTH], *d = digest;
! 433: unsigned int i;
! 434:
! 435: /* Sanity check: */
! 436: REQUIRE(context != (isc_sha224_t *)0);
! 437:
! 438: if (buffer != (char*)0) {
! 439: isc_sha224_final(digest, context);
! 440:
! 441: for (i = 0; i < ISC_SHA224_DIGESTLENGTH; i++) {
! 442: *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
! 443: *buffer++ = sha2_hex_digits[*d & 0x0f];
! 444: d++;
! 445: }
! 446: *buffer = (char)0;
! 447: } else {
! 448: memset(context, 0, sizeof(context));
! 449: }
! 450: memset(digest, 0, ISC_SHA224_DIGESTLENGTH);
! 451: return buffer;
! 452: }
! 453:
! 454: char*
! 455: isc_sha224_data(const isc_uint8_t *data, size_t len,
! 456: char digest[ISC_SHA224_DIGESTSTRINGLENGTH])
! 457: {
! 458: isc_sha224_t context;
! 459:
! 460: isc_sha224_init(&context);
! 461: isc_sha224_update(&context, data, len);
! 462: return (isc_sha224_end(&context, digest));
! 463: }
! 464:
! 465: /*** SHA-256: *********************************************************/
! 466: void
! 467: isc_sha256_init(isc_sha256_t *context) {
! 468: if (context == (isc_sha256_t *)0) {
! 469: return;
! 470: }
! 471: memcpy(context->state, sha256_initial_hash_value,
! 472: ISC_SHA256_DIGESTLENGTH);
! 473: memset(context->buffer, 0, ISC_SHA256_BLOCK_LENGTH);
! 474: context->bitcount = 0;
! 475: }
! 476:
! 477: #ifdef ISC_SHA2_UNROLL_TRANSFORM
! 478:
! 479: /* Unrolled SHA-256 round macros: */
! 480:
! 481: #if BYTE_ORDER == LITTLE_ENDIAN
! 482:
! 483: #define ROUND256_0_TO_15(a,b,c,d,e,f,g,h) \
! 484: REVERSE32(*data++, W256[j]); \
! 485: T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \
! 486: K256[j] + W256[j]; \
! 487: (d) += T1; \
! 488: (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
! 489: j++
! 490:
! 491:
! 492: #else /* BYTE_ORDER == LITTLE_ENDIAN */
! 493:
! 494: #define ROUND256_0_TO_15(a,b,c,d,e,f,g,h) \
! 495: T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \
! 496: K256[j] + (W256[j] = *data++); \
! 497: (d) += T1; \
! 498: (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
! 499: j++
! 500:
! 501: #endif /* BYTE_ORDER == LITTLE_ENDIAN */
! 502:
! 503: #define ROUND256(a,b,c,d,e,f,g,h) \
! 504: s0 = W256[(j+1)&0x0f]; \
! 505: s0 = sigma0_256(s0); \
! 506: s1 = W256[(j+14)&0x0f]; \
! 507: s1 = sigma1_256(s1); \
! 508: T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[j] + \
! 509: (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); \
! 510: (d) += T1; \
! 511: (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
! 512: j++
! 513:
! 514: void isc_sha256_transform(isc_sha256_t *context, const isc_uint32_t* data) {
! 515: isc_uint32_t a, b, c, d, e, f, g, h, s0, s1;
! 516: isc_uint32_t T1, *W256;
! 517: int j;
! 518:
! 519: W256 = (isc_uint32_t*)context->buffer;
! 520:
! 521: /* Initialize registers with the prev. intermediate value */
! 522: a = context->state[0];
! 523: b = context->state[1];
! 524: c = context->state[2];
! 525: d = context->state[3];
! 526: e = context->state[4];
! 527: f = context->state[5];
! 528: g = context->state[6];
! 529: h = context->state[7];
! 530:
! 531: j = 0;
! 532: do {
! 533: /* Rounds 0 to 15 (unrolled): */
! 534: ROUND256_0_TO_15(a,b,c,d,e,f,g,h);
! 535: ROUND256_0_TO_15(h,a,b,c,d,e,f,g);
! 536: ROUND256_0_TO_15(g,h,a,b,c,d,e,f);
! 537: ROUND256_0_TO_15(f,g,h,a,b,c,d,e);
! 538: ROUND256_0_TO_15(e,f,g,h,a,b,c,d);
! 539: ROUND256_0_TO_15(d,e,f,g,h,a,b,c);
! 540: ROUND256_0_TO_15(c,d,e,f,g,h,a,b);
! 541: ROUND256_0_TO_15(b,c,d,e,f,g,h,a);
! 542: } while (j < 16);
! 543:
! 544: /* Now for the remaining rounds to 64: */
! 545: do {
! 546: ROUND256(a,b,c,d,e,f,g,h);
! 547: ROUND256(h,a,b,c,d,e,f,g);
! 548: ROUND256(g,h,a,b,c,d,e,f);
! 549: ROUND256(f,g,h,a,b,c,d,e);
! 550: ROUND256(e,f,g,h,a,b,c,d);
! 551: ROUND256(d,e,f,g,h,a,b,c);
! 552: ROUND256(c,d,e,f,g,h,a,b);
! 553: ROUND256(b,c,d,e,f,g,h,a);
! 554: } while (j < 64);
! 555:
! 556: /* Compute the current intermediate hash value */
! 557: context->state[0] += a;
! 558: context->state[1] += b;
! 559: context->state[2] += c;
! 560: context->state[3] += d;
! 561: context->state[4] += e;
! 562: context->state[5] += f;
! 563: context->state[6] += g;
! 564: context->state[7] += h;
! 565:
! 566: /* Clean up */
! 567: a = b = c = d = e = f = g = h = T1 = 0;
! 568: }
! 569:
! 570: #else /* ISC_SHA2_UNROLL_TRANSFORM */
! 571:
! 572: void
! 573: isc_sha256_transform(isc_sha256_t *context, const isc_uint32_t* data) {
! 574: isc_uint32_t a, b, c, d, e, f, g, h, s0, s1;
! 575: isc_uint32_t T1, T2, *W256;
! 576: int j;
! 577:
! 578: W256 = (isc_uint32_t*)context->buffer;
! 579:
! 580: /* Initialize registers with the prev. intermediate value */
! 581: a = context->state[0];
! 582: b = context->state[1];
! 583: c = context->state[2];
! 584: d = context->state[3];
! 585: e = context->state[4];
! 586: f = context->state[5];
! 587: g = context->state[6];
! 588: h = context->state[7];
! 589:
! 590: j = 0;
! 591: do {
! 592: #if BYTE_ORDER == LITTLE_ENDIAN
! 593: /* Copy data while converting to host byte order */
! 594: REVERSE32(*data++,W256[j]);
! 595: /* Apply the SHA-256 compression function to update a..h */
! 596: T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j];
! 597: #else /* BYTE_ORDER == LITTLE_ENDIAN */
! 598: /* Apply the SHA-256 compression function to update a..h with copy */
! 599: T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + (W256[j] = *data++);
! 600: #endif /* BYTE_ORDER == LITTLE_ENDIAN */
! 601: T2 = Sigma0_256(a) + Maj(a, b, c);
! 602: h = g;
! 603: g = f;
! 604: f = e;
! 605: e = d + T1;
! 606: d = c;
! 607: c = b;
! 608: b = a;
! 609: a = T1 + T2;
! 610:
! 611: j++;
! 612: } while (j < 16);
! 613:
! 614: do {
! 615: /* Part of the message block expansion: */
! 616: s0 = W256[(j+1)&0x0f];
! 617: s0 = sigma0_256(s0);
! 618: s1 = W256[(j+14)&0x0f];
! 619: s1 = sigma1_256(s1);
! 620:
! 621: /* Apply the SHA-256 compression function to update a..h */
! 622: T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] +
! 623: (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0);
! 624: T2 = Sigma0_256(a) + Maj(a, b, c);
! 625: h = g;
! 626: g = f;
! 627: f = e;
! 628: e = d + T1;
! 629: d = c;
! 630: c = b;
! 631: b = a;
! 632: a = T1 + T2;
! 633:
! 634: j++;
! 635: } while (j < 64);
! 636:
! 637: /* Compute the current intermediate hash value */
! 638: context->state[0] += a;
! 639: context->state[1] += b;
! 640: context->state[2] += c;
! 641: context->state[3] += d;
! 642: context->state[4] += e;
! 643: context->state[5] += f;
! 644: context->state[6] += g;
! 645: context->state[7] += h;
! 646:
! 647: /* Clean up */
! 648: a = b = c = d = e = f = g = h = T1 = T2 = 0;
! 649: }
! 650:
! 651: #endif /* ISC_SHA2_UNROLL_TRANSFORM */
! 652:
! 653: void
! 654: isc_sha256_update(isc_sha256_t *context, const isc_uint8_t *data, size_t len) {
! 655: unsigned int freespace, usedspace;
! 656:
! 657: if (len == 0U) {
! 658: /* Calling with no data is valid - we do nothing */
! 659: return;
! 660: }
! 661:
! 662: /* Sanity check: */
! 663: REQUIRE(context != (isc_sha256_t *)0 && data != (isc_uint8_t*)0);
! 664:
! 665: usedspace = (unsigned int)((context->bitcount >> 3) %
! 666: ISC_SHA256_BLOCK_LENGTH);
! 667: if (usedspace > 0) {
! 668: /* Calculate how much free space is available in the buffer */
! 669: freespace = ISC_SHA256_BLOCK_LENGTH - usedspace;
! 670:
! 671: if (len >= freespace) {
! 672: /* Fill the buffer completely and process it */
! 673: memcpy(&context->buffer[usedspace], data, freespace);
! 674: context->bitcount += freespace << 3;
! 675: len -= freespace;
! 676: data += freespace;
! 677: isc_sha256_transform(context,
! 678: (isc_uint32_t*)context->buffer);
! 679: } else {
! 680: /* The buffer is not yet full */
! 681: memcpy(&context->buffer[usedspace], data, len);
! 682: context->bitcount += len << 3;
! 683: /* Clean up: */
! 684: usedspace = freespace = 0;
! 685: return;
! 686: }
! 687: }
! 688: while (len >= ISC_SHA256_BLOCK_LENGTH) {
! 689: /* Process as many complete blocks as we can */
! 690: memcpy(context->buffer, data, ISC_SHA256_BLOCK_LENGTH);
! 691: isc_sha256_transform(context, (isc_uint32_t*)context->buffer);
! 692: context->bitcount += ISC_SHA256_BLOCK_LENGTH << 3;
! 693: len -= ISC_SHA256_BLOCK_LENGTH;
! 694: data += ISC_SHA256_BLOCK_LENGTH;
! 695: }
! 696: if (len > 0U) {
! 697: /* There's left-overs, so save 'em */
! 698: memcpy(context->buffer, data, len);
! 699: context->bitcount += len << 3;
! 700: }
! 701: /* Clean up: */
! 702: usedspace = freespace = 0;
! 703: }
! 704:
! 705: void
! 706: isc_sha256_final(isc_uint8_t digest[], isc_sha256_t *context) {
! 707: isc_uint32_t *d = (isc_uint32_t*)digest;
! 708: unsigned int usedspace;
! 709:
! 710: /* Sanity check: */
! 711: REQUIRE(context != (isc_sha256_t *)0);
! 712:
! 713: /* If no digest buffer is passed, we don't bother doing this: */
! 714: if (digest != (isc_uint8_t*)0) {
! 715: usedspace = (unsigned int)((context->bitcount >> 3) %
! 716: ISC_SHA256_BLOCK_LENGTH);
! 717: #if BYTE_ORDER == LITTLE_ENDIAN
! 718: /* Convert FROM host byte order */
! 719: REVERSE64(context->bitcount,context->bitcount);
! 720: #endif
! 721: if (usedspace > 0) {
! 722: /* Begin padding with a 1 bit: */
! 723: context->buffer[usedspace++] = 0x80;
! 724:
! 725: if (usedspace <= ISC_SHA256_SHORT_BLOCK_LENGTH) {
! 726: /* Set-up for the last transform: */
! 727: memset(&context->buffer[usedspace], 0,
! 728: ISC_SHA256_SHORT_BLOCK_LENGTH - usedspace);
! 729: } else {
! 730: if (usedspace < ISC_SHA256_BLOCK_LENGTH) {
! 731: memset(&context->buffer[usedspace], 0,
! 732: ISC_SHA256_BLOCK_LENGTH -
! 733: usedspace);
! 734: }
! 735: /* Do second-to-last transform: */
! 736: isc_sha256_transform(context,
! 737: (isc_uint32_t*)context->buffer);
! 738:
! 739: /* And set-up for the last transform: */
! 740: memset(context->buffer, 0,
! 741: ISC_SHA256_SHORT_BLOCK_LENGTH);
! 742: }
! 743: } else {
! 744: /* Set-up for the last transform: */
! 745: memset(context->buffer, 0, ISC_SHA256_SHORT_BLOCK_LENGTH);
! 746:
! 747: /* Begin padding with a 1 bit: */
! 748: *context->buffer = 0x80;
! 749: }
! 750: /* Set the bit count: */
! 751: *(isc_uint64_t*)&context->buffer[ISC_SHA256_SHORT_BLOCK_LENGTH] = context->bitcount;
! 752:
! 753: /* Final transform: */
! 754: isc_sha256_transform(context, (isc_uint32_t*)context->buffer);
! 755:
! 756: #if BYTE_ORDER == LITTLE_ENDIAN
! 757: {
! 758: /* Convert TO host byte order */
! 759: int j;
! 760: for (j = 0; j < 8; j++) {
! 761: REVERSE32(context->state[j],context->state[j]);
! 762: *d++ = context->state[j];
! 763: }
! 764: }
! 765: #else
! 766: memcpy(d, context->state, ISC_SHA256_DIGESTLENGTH);
! 767: #endif
! 768: }
! 769:
! 770: /* Clean up state data: */
! 771: memset(context, 0, sizeof(context));
! 772: usedspace = 0;
! 773: }
! 774:
! 775: char *
! 776: isc_sha256_end(isc_sha256_t *context, char buffer[]) {
! 777: isc_uint8_t digest[ISC_SHA256_DIGESTLENGTH], *d = digest;
! 778: unsigned int i;
! 779:
! 780: /* Sanity check: */
! 781: REQUIRE(context != (isc_sha256_t *)0);
! 782:
! 783: if (buffer != (char*)0) {
! 784: isc_sha256_final(digest, context);
! 785:
! 786: for (i = 0; i < ISC_SHA256_DIGESTLENGTH; i++) {
! 787: *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
! 788: *buffer++ = sha2_hex_digits[*d & 0x0f];
! 789: d++;
! 790: }
! 791: *buffer = (char)0;
! 792: } else {
! 793: memset(context, 0, sizeof(context));
! 794: }
! 795: memset(digest, 0, ISC_SHA256_DIGESTLENGTH);
! 796: return buffer;
! 797: }
! 798:
! 799: char *
! 800: isc_sha256_data(const isc_uint8_t* data, size_t len,
! 801: char digest[ISC_SHA256_DIGESTSTRINGLENGTH])
! 802: {
! 803: isc_sha256_t context;
! 804:
! 805: isc_sha256_init(&context);
! 806: isc_sha256_update(&context, data, len);
! 807: return (isc_sha256_end(&context, digest));
! 808: }
! 809:
! 810:
! 811: /*** SHA-512: *********************************************************/
! 812: void
! 813: isc_sha512_init(isc_sha512_t *context) {
! 814: if (context == (isc_sha512_t *)0) {
! 815: return;
! 816: }
! 817: memcpy(context->state, sha512_initial_hash_value,
! 818: ISC_SHA512_DIGESTLENGTH);
! 819: memset(context->buffer, 0, ISC_SHA512_BLOCK_LENGTH);
! 820: context->bitcount[0] = context->bitcount[1] = 0;
! 821: }
! 822:
! 823: #ifdef ISC_SHA2_UNROLL_TRANSFORM
! 824:
! 825: /* Unrolled SHA-512 round macros: */
! 826: #if BYTE_ORDER == LITTLE_ENDIAN
! 827:
! 828: #define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) \
! 829: REVERSE64(*data++, W512[j]); \
! 830: T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \
! 831: K512[j] + W512[j]; \
! 832: (d) += T1, \
! 833: (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)), \
! 834: j++
! 835:
! 836:
! 837: #else /* BYTE_ORDER == LITTLE_ENDIAN */
! 838:
! 839: #define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) \
! 840: T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \
! 841: K512[j] + (W512[j] = *data++); \
! 842: (d) += T1; \
! 843: (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
! 844: j++
! 845:
! 846: #endif /* BYTE_ORDER == LITTLE_ENDIAN */
! 847:
! 848: #define ROUND512(a,b,c,d,e,f,g,h) \
! 849: s0 = W512[(j+1)&0x0f]; \
! 850: s0 = sigma0_512(s0); \
! 851: s1 = W512[(j+14)&0x0f]; \
! 852: s1 = sigma1_512(s1); \
! 853: T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[j] + \
! 854: (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); \
! 855: (d) += T1; \
! 856: (h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
! 857: j++
! 858:
! 859: void isc_sha512_transform(isc_sha512_t *context, const isc_uint64_t* data) {
! 860: isc_uint64_t a, b, c, d, e, f, g, h, s0, s1;
! 861: isc_uint64_t T1, *W512 = (isc_uint64_t*)context->buffer;
! 862: int j;
! 863:
! 864: /* Initialize registers with the prev. intermediate value */
! 865: a = context->state[0];
! 866: b = context->state[1];
! 867: c = context->state[2];
! 868: d = context->state[3];
! 869: e = context->state[4];
! 870: f = context->state[5];
! 871: g = context->state[6];
! 872: h = context->state[7];
! 873:
! 874: j = 0;
! 875: do {
! 876: ROUND512_0_TO_15(a,b,c,d,e,f,g,h);
! 877: ROUND512_0_TO_15(h,a,b,c,d,e,f,g);
! 878: ROUND512_0_TO_15(g,h,a,b,c,d,e,f);
! 879: ROUND512_0_TO_15(f,g,h,a,b,c,d,e);
! 880: ROUND512_0_TO_15(e,f,g,h,a,b,c,d);
! 881: ROUND512_0_TO_15(d,e,f,g,h,a,b,c);
! 882: ROUND512_0_TO_15(c,d,e,f,g,h,a,b);
! 883: ROUND512_0_TO_15(b,c,d,e,f,g,h,a);
! 884: } while (j < 16);
! 885:
! 886: /* Now for the remaining rounds up to 79: */
! 887: do {
! 888: ROUND512(a,b,c,d,e,f,g,h);
! 889: ROUND512(h,a,b,c,d,e,f,g);
! 890: ROUND512(g,h,a,b,c,d,e,f);
! 891: ROUND512(f,g,h,a,b,c,d,e);
! 892: ROUND512(e,f,g,h,a,b,c,d);
! 893: ROUND512(d,e,f,g,h,a,b,c);
! 894: ROUND512(c,d,e,f,g,h,a,b);
! 895: ROUND512(b,c,d,e,f,g,h,a);
! 896: } while (j < 80);
! 897:
! 898: /* Compute the current intermediate hash value */
! 899: context->state[0] += a;
! 900: context->state[1] += b;
! 901: context->state[2] += c;
! 902: context->state[3] += d;
! 903: context->state[4] += e;
! 904: context->state[5] += f;
! 905: context->state[6] += g;
! 906: context->state[7] += h;
! 907:
! 908: /* Clean up */
! 909: a = b = c = d = e = f = g = h = T1 = 0;
! 910: }
! 911:
! 912: #else /* ISC_SHA2_UNROLL_TRANSFORM */
! 913:
! 914: void
! 915: isc_sha512_transform(isc_sha512_t *context, const isc_uint64_t* data) {
! 916: isc_uint64_t a, b, c, d, e, f, g, h, s0, s1;
! 917: isc_uint64_t T1, T2, *W512 = (isc_uint64_t*)context->buffer;
! 918: int j;
! 919:
! 920: /* Initialize registers with the prev. intermediate value */
! 921: a = context->state[0];
! 922: b = context->state[1];
! 923: c = context->state[2];
! 924: d = context->state[3];
! 925: e = context->state[4];
! 926: f = context->state[5];
! 927: g = context->state[6];
! 928: h = context->state[7];
! 929:
! 930: j = 0;
! 931: do {
! 932: #if BYTE_ORDER == LITTLE_ENDIAN
! 933: /* Convert TO host byte order */
! 934: REVERSE64(*data++, W512[j]);
! 935: /* Apply the SHA-512 compression function to update a..h */
! 936: T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j];
! 937: #else /* BYTE_ORDER == LITTLE_ENDIAN */
! 938: /* Apply the SHA-512 compression function to update a..h with copy */
! 939: T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + (W512[j] = *data++);
! 940: #endif /* BYTE_ORDER == LITTLE_ENDIAN */
! 941: T2 = Sigma0_512(a) + Maj(a, b, c);
! 942: h = g;
! 943: g = f;
! 944: f = e;
! 945: e = d + T1;
! 946: d = c;
! 947: c = b;
! 948: b = a;
! 949: a = T1 + T2;
! 950:
! 951: j++;
! 952: } while (j < 16);
! 953:
! 954: do {
! 955: /* Part of the message block expansion: */
! 956: s0 = W512[(j+1)&0x0f];
! 957: s0 = sigma0_512(s0);
! 958: s1 = W512[(j+14)&0x0f];
! 959: s1 = sigma1_512(s1);
! 960:
! 961: /* Apply the SHA-512 compression function to update a..h */
! 962: T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] +
! 963: (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0);
! 964: T2 = Sigma0_512(a) + Maj(a, b, c);
! 965: h = g;
! 966: g = f;
! 967: f = e;
! 968: e = d + T1;
! 969: d = c;
! 970: c = b;
! 971: b = a;
! 972: a = T1 + T2;
! 973:
! 974: j++;
! 975: } while (j < 80);
! 976:
! 977: /* Compute the current intermediate hash value */
! 978: context->state[0] += a;
! 979: context->state[1] += b;
! 980: context->state[2] += c;
! 981: context->state[3] += d;
! 982: context->state[4] += e;
! 983: context->state[5] += f;
! 984: context->state[6] += g;
! 985: context->state[7] += h;
! 986:
! 987: /* Clean up */
! 988: a = b = c = d = e = f = g = h = T1 = T2 = 0;
! 989: }
! 990:
! 991: #endif /* ISC_SHA2_UNROLL_TRANSFORM */
! 992:
! 993: void isc_sha512_update(isc_sha512_t *context, const isc_uint8_t *data, size_t len) {
! 994: unsigned int freespace, usedspace;
! 995:
! 996: if (len == 0U) {
! 997: /* Calling with no data is valid - we do nothing */
! 998: return;
! 999: }
! 1000:
! 1001: /* Sanity check: */
! 1002: REQUIRE(context != (isc_sha512_t *)0 && data != (isc_uint8_t*)0);
! 1003:
! 1004: usedspace = (unsigned int)((context->bitcount[0] >> 3) %
! 1005: ISC_SHA512_BLOCK_LENGTH);
! 1006: if (usedspace > 0) {
! 1007: /* Calculate how much free space is available in the buffer */
! 1008: freespace = ISC_SHA512_BLOCK_LENGTH - usedspace;
! 1009:
! 1010: if (len >= freespace) {
! 1011: /* Fill the buffer completely and process it */
! 1012: memcpy(&context->buffer[usedspace], data, freespace);
! 1013: ADDINC128(context->bitcount, freespace << 3);
! 1014: len -= freespace;
! 1015: data += freespace;
! 1016: isc_sha512_transform(context,
! 1017: (isc_uint64_t*)context->buffer);
! 1018: } else {
! 1019: /* The buffer is not yet full */
! 1020: memcpy(&context->buffer[usedspace], data, len);
! 1021: ADDINC128(context->bitcount, len << 3);
! 1022: /* Clean up: */
! 1023: usedspace = freespace = 0;
! 1024: return;
! 1025: }
! 1026: }
! 1027: while (len >= ISC_SHA512_BLOCK_LENGTH) {
! 1028: /* Process as many complete blocks as we can */
! 1029: memcpy(context->buffer, data, ISC_SHA512_BLOCK_LENGTH);
! 1030: isc_sha512_transform(context, (isc_uint64_t*)context->buffer);
! 1031: ADDINC128(context->bitcount, ISC_SHA512_BLOCK_LENGTH << 3);
! 1032: len -= ISC_SHA512_BLOCK_LENGTH;
! 1033: data += ISC_SHA512_BLOCK_LENGTH;
! 1034: }
! 1035: if (len > 0U) {
! 1036: /* There's left-overs, so save 'em */
! 1037: memcpy(context->buffer, data, len);
! 1038: ADDINC128(context->bitcount, len << 3);
! 1039: }
! 1040: /* Clean up: */
! 1041: usedspace = freespace = 0;
! 1042: }
! 1043:
! 1044: void isc_sha512_last(isc_sha512_t *context) {
! 1045: unsigned int usedspace;
! 1046:
! 1047: usedspace = (unsigned int)((context->bitcount[0] >> 3) %
! 1048: ISC_SHA512_BLOCK_LENGTH);
! 1049: #if BYTE_ORDER == LITTLE_ENDIAN
! 1050: /* Convert FROM host byte order */
! 1051: REVERSE64(context->bitcount[0],context->bitcount[0]);
! 1052: REVERSE64(context->bitcount[1],context->bitcount[1]);
! 1053: #endif
! 1054: if (usedspace > 0) {
! 1055: /* Begin padding with a 1 bit: */
! 1056: context->buffer[usedspace++] = 0x80;
! 1057:
! 1058: if (usedspace <= ISC_SHA512_SHORT_BLOCK_LENGTH) {
! 1059: /* Set-up for the last transform: */
! 1060: memset(&context->buffer[usedspace], 0,
! 1061: ISC_SHA512_SHORT_BLOCK_LENGTH - usedspace);
! 1062: } else {
! 1063: if (usedspace < ISC_SHA512_BLOCK_LENGTH) {
! 1064: memset(&context->buffer[usedspace], 0,
! 1065: ISC_SHA512_BLOCK_LENGTH - usedspace);
! 1066: }
! 1067: /* Do second-to-last transform: */
! 1068: isc_sha512_transform(context,
! 1069: (isc_uint64_t*)context->buffer);
! 1070:
! 1071: /* And set-up for the last transform: */
! 1072: memset(context->buffer, 0, ISC_SHA512_BLOCK_LENGTH - 2);
! 1073: }
! 1074: } else {
! 1075: /* Prepare for final transform: */
! 1076: memset(context->buffer, 0, ISC_SHA512_SHORT_BLOCK_LENGTH);
! 1077:
! 1078: /* Begin padding with a 1 bit: */
! 1079: *context->buffer = 0x80;
! 1080: }
! 1081: /* Store the length of input data (in bits): */
! 1082: *(isc_uint64_t*)&context->buffer[ISC_SHA512_SHORT_BLOCK_LENGTH] = context->bitcount[1];
! 1083: *(isc_uint64_t*)&context->buffer[ISC_SHA512_SHORT_BLOCK_LENGTH+8] = context->bitcount[0];
! 1084:
! 1085: /* Final transform: */
! 1086: isc_sha512_transform(context, (isc_uint64_t*)context->buffer);
! 1087: }
! 1088:
! 1089: void isc_sha512_final(isc_uint8_t digest[], isc_sha512_t *context) {
! 1090: isc_uint64_t *d = (isc_uint64_t*)digest;
! 1091:
! 1092: /* Sanity check: */
! 1093: REQUIRE(context != (isc_sha512_t *)0);
! 1094:
! 1095: /* If no digest buffer is passed, we don't bother doing this: */
! 1096: if (digest != (isc_uint8_t*)0) {
! 1097: isc_sha512_last(context);
! 1098:
! 1099: /* Save the hash data for output: */
! 1100: #if BYTE_ORDER == LITTLE_ENDIAN
! 1101: {
! 1102: /* Convert TO host byte order */
! 1103: int j;
! 1104: for (j = 0; j < 8; j++) {
! 1105: REVERSE64(context->state[j],context->state[j]);
! 1106: *d++ = context->state[j];
! 1107: }
! 1108: }
! 1109: #else
! 1110: memcpy(d, context->state, ISC_SHA512_DIGESTLENGTH);
! 1111: #endif
! 1112: }
! 1113:
! 1114: /* Zero out state data */
! 1115: memset(context, 0, sizeof(context));
! 1116: }
! 1117:
! 1118: char *
! 1119: isc_sha512_end(isc_sha512_t *context, char buffer[]) {
! 1120: isc_uint8_t digest[ISC_SHA512_DIGESTLENGTH], *d = digest;
! 1121: unsigned int i;
! 1122:
! 1123: /* Sanity check: */
! 1124: REQUIRE(context != (isc_sha512_t *)0);
! 1125:
! 1126: if (buffer != (char*)0) {
! 1127: isc_sha512_final(digest, context);
! 1128:
! 1129: for (i = 0; i < ISC_SHA512_DIGESTLENGTH; i++) {
! 1130: *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
! 1131: *buffer++ = sha2_hex_digits[*d & 0x0f];
! 1132: d++;
! 1133: }
! 1134: *buffer = (char)0;
! 1135: } else {
! 1136: memset(context, 0, sizeof(context));
! 1137: }
! 1138: memset(digest, 0, ISC_SHA512_DIGESTLENGTH);
! 1139: return buffer;
! 1140: }
! 1141:
! 1142: char *
! 1143: isc_sha512_data(const isc_uint8_t *data, size_t len,
! 1144: char digest[ISC_SHA512_DIGESTSTRINGLENGTH])
! 1145: {
! 1146: isc_sha512_t context;
! 1147:
! 1148: isc_sha512_init(&context);
! 1149: isc_sha512_update(&context, data, len);
! 1150: return (isc_sha512_end(&context, digest));
! 1151: }
! 1152:
! 1153:
! 1154: /*** SHA-384: *********************************************************/
! 1155: void
! 1156: isc_sha384_init(isc_sha384_t *context) {
! 1157: if (context == (isc_sha384_t *)0) {
! 1158: return;
! 1159: }
! 1160: memcpy(context->state, sha384_initial_hash_value,
! 1161: ISC_SHA512_DIGESTLENGTH);
! 1162: memset(context->buffer, 0, ISC_SHA384_BLOCK_LENGTH);
! 1163: context->bitcount[0] = context->bitcount[1] = 0;
! 1164: }
! 1165:
! 1166: void
! 1167: isc_sha384_update(isc_sha384_t *context, const isc_uint8_t* data, size_t len) {
! 1168: isc_sha512_update((isc_sha512_t *)context, data, len);
! 1169: }
! 1170:
! 1171: void
! 1172: isc_sha384_final(isc_uint8_t digest[], isc_sha384_t *context) {
! 1173: isc_uint64_t *d = (isc_uint64_t*)digest;
! 1174:
! 1175: /* Sanity check: */
! 1176: REQUIRE(context != (isc_sha384_t *)0);
! 1177:
! 1178: /* If no digest buffer is passed, we don't bother doing this: */
! 1179: if (digest != (isc_uint8_t*)0) {
! 1180: isc_sha512_last((isc_sha512_t *)context);
! 1181:
! 1182: /* Save the hash data for output: */
! 1183: #if BYTE_ORDER == LITTLE_ENDIAN
! 1184: {
! 1185: /* Convert TO host byte order */
! 1186: int j;
! 1187: for (j = 0; j < 6; j++) {
! 1188: REVERSE64(context->state[j],context->state[j]);
! 1189: *d++ = context->state[j];
! 1190: }
! 1191: }
! 1192: #else
! 1193: memcpy(d, context->state, ISC_SHA384_DIGESTLENGTH);
! 1194: #endif
! 1195: }
! 1196:
! 1197: /* Zero out state data */
! 1198: memset(context, 0, sizeof(context));
! 1199: }
! 1200:
! 1201: char *
! 1202: isc_sha384_end(isc_sha384_t *context, char buffer[]) {
! 1203: isc_uint8_t digest[ISC_SHA384_DIGESTLENGTH], *d = digest;
! 1204: unsigned int i;
! 1205:
! 1206: /* Sanity check: */
! 1207: REQUIRE(context != (isc_sha384_t *)0);
! 1208:
! 1209: if (buffer != (char*)0) {
! 1210: isc_sha384_final(digest, context);
! 1211:
! 1212: for (i = 0; i < ISC_SHA384_DIGESTLENGTH; i++) {
! 1213: *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
! 1214: *buffer++ = sha2_hex_digits[*d & 0x0f];
! 1215: d++;
! 1216: }
! 1217: *buffer = (char)0;
! 1218: } else {
! 1219: memset(context, 0, sizeof(context));
! 1220: }
! 1221: memset(digest, 0, ISC_SHA384_DIGESTLENGTH);
! 1222: return buffer;
! 1223: }
! 1224:
! 1225: char*
! 1226: isc_sha384_data(const isc_uint8_t *data, size_t len,
! 1227: char digest[ISC_SHA384_DIGESTSTRINGLENGTH])
! 1228: {
! 1229: isc_sha384_t context;
! 1230:
! 1231: isc_sha384_init(&context);
! 1232: isc_sha384_update(&context, data, len);
! 1233: return (isc_sha384_end(&context, digest));
! 1234: }
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