564 lines
14 KiB
C
564 lines
14 KiB
C
/* sha512.c - SHA384 and SHA512 hash functions
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* Copyright (C) 2003, 2008, 2009 Free Software Foundation, Inc.
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*
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* This file is part of Libgcrypt.
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*
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* Libgcrypt is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser general Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Libgcrypt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* Test vectors from FIPS-180-2:
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*
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* "abc"
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* 384:
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* CB00753F 45A35E8B B5A03D69 9AC65007 272C32AB 0EDED163
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* 1A8B605A 43FF5BED 8086072B A1E7CC23 58BAECA1 34C825A7
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* 512:
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* DDAF35A1 93617ABA CC417349 AE204131 12E6FA4E 89A97EA2 0A9EEEE6 4B55D39A
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* 2192992A 274FC1A8 36BA3C23 A3FEEBBD 454D4423 643CE80E 2A9AC94F A54CA49F
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*
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* "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu"
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* 384:
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* 09330C33 F71147E8 3D192FC7 82CD1B47 53111B17 3B3B05D2
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* 2FA08086 E3B0F712 FCC7C71A 557E2DB9 66C3E9FA 91746039
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* 512:
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* 8E959B75 DAE313DA 8CF4F728 14FC143F 8F7779C6 EB9F7FA1 7299AEAD B6889018
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* 501D289E 4900F7E4 331B99DE C4B5433A C7D329EE B6DD2654 5E96E55B 874BE909
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*
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* "a" x 1000000
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* 384:
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* 9D0E1809 716474CB 086E834E 310A4A1C ED149E9C 00F24852
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* 7972CEC5 704C2A5B 07B8B3DC 38ECC4EB AE97DDD8 7F3D8985
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* 512:
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* E718483D 0CE76964 4E2E42C7 BC15B463 8E1F98B1 3B204428 5632A803 AFA973EB
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* DE0FF244 877EA60A 4CB0432C E577C31B EB009C5C 2C49AA2E 4EADB217 AD8CC09B
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*/
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#include "quakedef.h"
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#ifndef SHA2
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#define SHA2 256
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#include "sha2.c"
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#undef SHA2
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#define SHA2 512
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#endif
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#undef U64_C
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#undef U64_C_LOW
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#undef u64
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#undef ROUNDS
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#undef SHA2_CONTEXT
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#undef sha2trunc_init
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#undef sha2_init
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#if SHA2==256
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#define U64_C(n) (n##ull>>32)
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#define U64_C_LOW(n) (u64)U64_C(n)
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#define u64 quint32_t
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#define ROUNDS 64
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#define SHA2_CONTEXT SHA256_CONTEXT
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#define sha2trunc_init sha224_init
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#define sha2_init sha256_init
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#else
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#define U64_C(n) n##ull
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#define U64_C_LOW(n) n##ull
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#define u64 quint64_t
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#define ROUNDS 80
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#define SHA2_CONTEXT SHA512_CONTEXT
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#define ROTR ROTR64
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#define Ch Ch64
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#define Maj Maj64
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#define Sum0 Sum0_64
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#define Sum1 Sum1_64
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#define transform transform_64
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#define sha2trunc_init sha384_init
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#define sha2_init sha512_init
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#define sha2_write sha512_write
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#define sha2_final sha512_final
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#endif
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#define BLOCKBYTES (16*sizeof(u64))
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#define byte qbyte
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typedef struct
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{
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u64 h0, h1, h2, h3, h4, h5, h6, h7;
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u64 nblocks;
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byte buf[BLOCKBYTES];
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int count;
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} SHA2_CONTEXT;
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static void
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sha2_init (void *context)
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{
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SHA2_CONTEXT *hd = context;
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hd->h0 = U64_C(0x6a09e667f3bcc908);
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hd->h1 = U64_C(0xbb67ae8584caa73b);
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hd->h2 = U64_C(0x3c6ef372fe94f82b);
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hd->h3 = U64_C(0xa54ff53a5f1d36f1);
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hd->h4 = U64_C(0x510e527fade682d1);
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hd->h5 = U64_C(0x9b05688c2b3e6c1f);
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hd->h6 = U64_C(0x1f83d9abfb41bd6b);
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hd->h7 = U64_C(0x5be0cd19137e2179);
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hd->nblocks = 0;
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hd->count = 0;
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}
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static void sha2trunc_init (void *context)
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{
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SHA2_CONTEXT *hd = context;
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//sha224 uses only the low parts.
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hd->h0 = U64_C_LOW(0xcbbb9d5dc1059ed8);
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hd->h1 = U64_C_LOW(0x629a292a367cd507);
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hd->h2 = U64_C_LOW(0x9159015a3070dd17);
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hd->h3 = U64_C_LOW(0x152fecd8f70e5939);
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hd->h4 = U64_C_LOW(0x67332667ffc00b31);
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hd->h5 = U64_C_LOW(0x8eb44a8768581511);
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hd->h6 = U64_C_LOW(0xdb0c2e0d64f98fa7);
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hd->h7 = U64_C_LOW(0x47b5481dbefa4fa4);
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hd->nblocks = 0;
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hd->count = 0;
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}
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fte_inlinestatic u64
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ROTR (u64 x, u64 n)
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{
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return ((x >> n) | (x << (64 - n)));
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}
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fte_inlinestatic u64
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Ch (u64 x, u64 y, u64 z)
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{
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return ((x & y) ^ ( ~x & z));
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}
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fte_inlinestatic u64
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Maj (u64 x, u64 y, u64 z)
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{
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return ((x & y) ^ (x & z) ^ (y & z));
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}
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#undef S0
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#undef S1
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#if SHA2==256
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#define S0(x) (ROTR((x),7) ^ ROTR((x),18) ^ ((x)>>3))
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#define S1(x) (ROTR((x),17) ^ ROTR((x),19) ^ ((x)>>10))
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fte_inlinestatic u64
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Sum0 (u64 x)
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{
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return (ROTR (x, 2) ^ ROTR (x, 13) ^ ROTR (x, 22));
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}
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fte_inlinestatic u64
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Sum1 (u64 x)
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{
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return (ROTR (x, 6) ^ ROTR (x, 11) ^ ROTR (x, 25));
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}
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#else
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#define S0(x) (ROTR((x),1) ^ ROTR((x),8) ^ ((x)>>7))
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#define S1(x) (ROTR((x),19) ^ ROTR((x),61) ^ ((x)>>6))
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fte_inlinestatic u64
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Sum0 (u64 x)
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{
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return (ROTR (x, 28) ^ ROTR (x, 34) ^ ROTR (x, 39));
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}
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fte_inlinestatic u64
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Sum1 (u64 x)
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{
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return (ROTR (x, 14) ^ ROTR (x, 18) ^ ROTR (x, 41));
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}
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#endif
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/****************
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* Transform the message W which consists of 16 64-bit-words
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*/
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static void
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transform (SHA2_CONTEXT *hd, const unsigned char *data)
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{
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u64 a, b, c, d, e, f, g, h;
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u64 w[ROUNDS];
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int t;
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static const u64 k[] =
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{
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U64_C(0x428a2f98d728ae22), U64_C(0x7137449123ef65cd),
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U64_C(0xb5c0fbcfec4d3b2f), U64_C(0xe9b5dba58189dbbc),
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U64_C(0x3956c25bf348b538), U64_C(0x59f111f1b605d019),
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U64_C(0x923f82a4af194f9b), U64_C(0xab1c5ed5da6d8118),
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U64_C(0xd807aa98a3030242), U64_C(0x12835b0145706fbe),
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U64_C(0x243185be4ee4b28c), U64_C(0x550c7dc3d5ffb4e2),
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U64_C(0x72be5d74f27b896f), U64_C(0x80deb1fe3b1696b1),
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U64_C(0x9bdc06a725c71235), U64_C(0xc19bf174cf692694),
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U64_C(0xe49b69c19ef14ad2), U64_C(0xefbe4786384f25e3),
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U64_C(0x0fc19dc68b8cd5b5), U64_C(0x240ca1cc77ac9c65),
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U64_C(0x2de92c6f592b0275), U64_C(0x4a7484aa6ea6e483),
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U64_C(0x5cb0a9dcbd41fbd4), U64_C(0x76f988da831153b5),
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U64_C(0x983e5152ee66dfab), U64_C(0xa831c66d2db43210),
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U64_C(0xb00327c898fb213f), U64_C(0xbf597fc7beef0ee4),
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U64_C(0xc6e00bf33da88fc2), U64_C(0xd5a79147930aa725),
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U64_C(0x06ca6351e003826f), U64_C(0x142929670a0e6e70),
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U64_C(0x27b70a8546d22ffc), U64_C(0x2e1b21385c26c926),
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U64_C(0x4d2c6dfc5ac42aed), U64_C(0x53380d139d95b3df),
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U64_C(0x650a73548baf63de), U64_C(0x766a0abb3c77b2a8),
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U64_C(0x81c2c92e47edaee6), U64_C(0x92722c851482353b),
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U64_C(0xa2bfe8a14cf10364), U64_C(0xa81a664bbc423001),
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U64_C(0xc24b8b70d0f89791), U64_C(0xc76c51a30654be30),
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U64_C(0xd192e819d6ef5218), U64_C(0xd69906245565a910),
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U64_C(0xf40e35855771202a), U64_C(0x106aa07032bbd1b8),
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U64_C(0x19a4c116b8d2d0c8), U64_C(0x1e376c085141ab53),
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U64_C(0x2748774cdf8eeb99), U64_C(0x34b0bcb5e19b48a8),
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U64_C(0x391c0cb3c5c95a63), U64_C(0x4ed8aa4ae3418acb),
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U64_C(0x5b9cca4f7763e373), U64_C(0x682e6ff3d6b2b8a3),
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U64_C(0x748f82ee5defb2fc), U64_C(0x78a5636f43172f60),
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U64_C(0x84c87814a1f0ab72), U64_C(0x8cc702081a6439ec),
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U64_C(0x90befffa23631e28), U64_C(0xa4506cebde82bde9),
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U64_C(0xbef9a3f7b2c67915), U64_C(0xc67178f2e372532b),
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U64_C(0xca273eceea26619c), U64_C(0xd186b8c721c0c207),
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U64_C(0xeada7dd6cde0eb1e), U64_C(0xf57d4f7fee6ed178),
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U64_C(0x06f067aa72176fba), U64_C(0x0a637dc5a2c898a6),
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U64_C(0x113f9804bef90dae), U64_C(0x1b710b35131c471b),
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U64_C(0x28db77f523047d84), U64_C(0x32caab7b40c72493),
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U64_C(0x3c9ebe0a15c9bebc), U64_C(0x431d67c49c100d4c),
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U64_C(0x4cc5d4becb3e42b6), U64_C(0x597f299cfc657e2a),
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U64_C(0x5fcb6fab3ad6faec), U64_C(0x6c44198c4a475817)
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};
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/* get values from the chaining vars */
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a = hd->h0;
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b = hd->h1;
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c = hd->h2;
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d = hd->h3;
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e = hd->h4;
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f = hd->h5;
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g = hd->h6;
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h = hd->h7;
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#ifdef WORDS_BIGENDIAN
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memcpy (w, data, BLOCKBYTES);
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#else
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{
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int i;
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byte *p2;
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for (i = 0, p2 = (byte *) w; i < 16; i++, p2 += sizeof(*w))
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{
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#if SHA2==512
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p2[7] = *data++;
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p2[6] = *data++;
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p2[5] = *data++;
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p2[4] = *data++;
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#endif
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p2[3] = *data++;
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p2[2] = *data++;
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p2[1] = *data++;
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p2[0] = *data++;
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}
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}
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#endif
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for (t = 16; t < ROUNDS; t++)
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w[t] = S1 (w[t - 2]) + w[t - 7] + S0 (w[t - 15]) + w[t - 16];
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for (t = 0; t < ROUNDS; )
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{
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u64 t1, t2;
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/* Performance on a AMD Athlon(tm) Dual Core Processor 4050e
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with gcc 4.3.3 using gcry_md_hash_buffer of each 10000 bytes
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initialized to 0,1,2,3...255,0,... and 1000 iterations:
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Not unrolled with macros: 440ms
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Unrolled with macros: 350ms
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Unrolled with inline: 330ms
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*/
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#if 0 /* Not unrolled. */
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t1 = h + Sum1 (e) + Ch (e, f, g) + k[t] + w[t];
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t2 = Sum0 (a) + Maj (a, b, c);
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h = g;
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g = f;
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f = e;
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e = d + t1;
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d = c;
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c = b;
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b = a;
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a = t1 + t2;
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t++;
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#else /* Unrolled to interweave the chain variables. */
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t1 = h + Sum1 (e) + Ch (e, f, g) + k[t] + w[t];
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t2 = Sum0 (a) + Maj (a, b, c);
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d += t1;
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h = t1 + t2;
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t1 = g + Sum1 (d) + Ch (d, e, f) + k[t+1] + w[t+1];
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t2 = Sum0 (h) + Maj (h, a, b);
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c += t1;
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g = t1 + t2;
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t1 = f + Sum1 (c) + Ch (c, d, e) + k[t+2] + w[t+2];
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t2 = Sum0 (g) + Maj (g, h, a);
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b += t1;
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f = t1 + t2;
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t1 = e + Sum1 (b) + Ch (b, c, d) + k[t+3] + w[t+3];
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t2 = Sum0 (f) + Maj (f, g, h);
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a += t1;
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e = t1 + t2;
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t1 = d + Sum1 (a) + Ch (a, b, c) + k[t+4] + w[t+4];
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t2 = Sum0 (e) + Maj (e, f, g);
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h += t1;
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d = t1 + t2;
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t1 = c + Sum1 (h) + Ch (h, a, b) + k[t+5] + w[t+5];
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t2 = Sum0 (d) + Maj (d, e, f);
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g += t1;
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c = t1 + t2;
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t1 = b + Sum1 (g) + Ch (g, h, a) + k[t+6] + w[t+6];
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t2 = Sum0 (c) + Maj (c, d, e);
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f += t1;
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b = t1 + t2;
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t1 = a + Sum1 (f) + Ch (f, g, h) + k[t+7] + w[t+7];
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t2 = Sum0 (b) + Maj (b, c, d);
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e += t1;
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a = t1 + t2;
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t += 8;
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#endif
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}
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/* Update chaining vars. */
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hd->h0 += a;
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hd->h1 += b;
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hd->h2 += c;
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hd->h3 += d;
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hd->h4 += e;
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hd->h5 += f;
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hd->h6 += g;
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hd->h7 += h;
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}
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/* Update the message digest with the contents
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* of INBUF with length INLEN.
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*/
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static void
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sha2_write (void *context, const void *inbuf_arg, size_t inlen)
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{
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const unsigned char *inbuf = inbuf_arg;
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SHA2_CONTEXT *hd = context;
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if (hd->count == BLOCKBYTES)
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{ /* flush the buffer */
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transform (hd, hd->buf);
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hd->count = 0;
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hd->nblocks++;
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}
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if (!inbuf)
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return;
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if (hd->count)
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{
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for (; inlen && hd->count < BLOCKBYTES; inlen--)
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hd->buf[hd->count++] = *inbuf++;
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sha2_write (context, NULL, 0);
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if (!inlen)
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return;
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}
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while (inlen >= BLOCKBYTES)
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{
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transform (hd, inbuf);
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hd->count = 0;
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hd->nblocks++;
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inlen -= BLOCKBYTES;
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inbuf += BLOCKBYTES;
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}
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for (; inlen && hd->count < BLOCKBYTES; inlen--)
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hd->buf[hd->count++] = *inbuf++;
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}
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/* The routine final terminates the computation and
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* returns the digest.
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* The handle is prepared for a new cycle, but adding bytes to the
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* handle will the destroy the returned buffer.
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* Returns: 64 bytes representing the digest. When used for sha384,
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* we take the leftmost 48 of those bytes.
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*/
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static void
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sha2_final (void *context)
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{
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SHA2_CONTEXT *hd = context;
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u64 t, msb, lsb;
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byte *p;
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sha2_write (context, NULL, 0); /* flush */ ;
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t = hd->nblocks;
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/* multiply by 128 to make a byte count */
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lsb = t * BLOCKBYTES;
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msb = t >> (sizeof(u64)*8-((BLOCKBYTES==128)?7:6));
|
|
/* add the count */
|
|
t = lsb;
|
|
if ((lsb += hd->count) < t)
|
|
msb++;
|
|
/* multiply by 8 to make a bit count */
|
|
t = lsb;
|
|
lsb <<= 3;
|
|
msb <<= 3;
|
|
msb |= t >> (sizeof(u64)*8-3);
|
|
|
|
if (hd->count < BLOCKBYTES-sizeof(u64)*2)
|
|
{ /* enough room */
|
|
hd->buf[hd->count++] = 0x80; /* pad */
|
|
while (hd->count < BLOCKBYTES-sizeof(u64)*2)
|
|
hd->buf[hd->count++] = 0; /* pad */
|
|
}
|
|
else
|
|
{ /* need one extra block */
|
|
hd->buf[hd->count++] = 0x80; /* pad character */
|
|
while (hd->count < BLOCKBYTES)
|
|
hd->buf[hd->count++] = 0;
|
|
sha2_write (context, NULL, 0); /* flush */ ;
|
|
memset (hd->buf, 0, BLOCKBYTES-sizeof(u64)*2); /* fill next block with zeroes */
|
|
}
|
|
|
|
#if SHA2==256
|
|
#define X(a) do { *p++ = hd->h##a >> 24; *p++ = hd->h##a >> 16; \
|
|
*p++ = hd->h##a >> 8; *p++ = hd->h##a; } while (0)
|
|
|
|
/* append the 128 bit count */
|
|
hd->buf[56] = msb >> 24;
|
|
hd->buf[57] = msb >> 16;
|
|
hd->buf[58] = msb >> 8;
|
|
hd->buf[59] = msb;
|
|
|
|
hd->buf[60] = lsb >> 24;
|
|
hd->buf[61] = lsb >> 16;
|
|
hd->buf[62] = lsb >> 8;
|
|
hd->buf[63] = lsb;
|
|
#else
|
|
#define X(a) do { *p++ = hd->h##a >> 56; *p++ = hd->h##a >> 48; \
|
|
*p++ = hd->h##a >> 40; *p++ = hd->h##a >> 32; \
|
|
*p++ = hd->h##a >> 24; *p++ = hd->h##a >> 16; \
|
|
*p++ = hd->h##a >> 8; *p++ = hd->h##a; } while (0)
|
|
|
|
/* append the 128 bit count */
|
|
hd->buf[112] = msb >> 56;
|
|
hd->buf[113] = msb >> 48;
|
|
hd->buf[114] = msb >> 40;
|
|
hd->buf[115] = msb >> 32;
|
|
hd->buf[116] = msb >> 24;
|
|
hd->buf[117] = msb >> 16;
|
|
hd->buf[118] = msb >> 8;
|
|
hd->buf[119] = msb;
|
|
|
|
hd->buf[120] = lsb >> 56;
|
|
hd->buf[121] = lsb >> 48;
|
|
hd->buf[122] = lsb >> 40;
|
|
hd->buf[123] = lsb >> 32;
|
|
hd->buf[124] = lsb >> 24;
|
|
hd->buf[125] = lsb >> 16;
|
|
hd->buf[126] = lsb >> 8;
|
|
hd->buf[127] = lsb;
|
|
#endif
|
|
transform (hd, hd->buf);
|
|
|
|
p = hd->buf;
|
|
#ifdef WORDS_BIGENDIAN
|
|
#undef X
|
|
#define X(a) do { *(u64*)p = hd->h##a ; p += sizeof(u64); } while (0)
|
|
#endif
|
|
X (0);
|
|
X (1);
|
|
X (2);
|
|
X (3);
|
|
X (4);
|
|
X (5);
|
|
/* Note that these last two chunks are included even for SHA384.
|
|
We just ignore them. */
|
|
X (6);
|
|
X (7);
|
|
#undef X
|
|
}
|
|
|
|
#if SHA2==256
|
|
static void sha224_finish (qbyte *digest, void *context)
|
|
{
|
|
SHA2_CONTEXT *hd = (SHA2_CONTEXT *) context;
|
|
sha2_final(context);
|
|
memcpy(digest, hd->buf, 224/8); //only the first 224 bits of the result...
|
|
}
|
|
static void sha256_finish (qbyte *digest, void *context)
|
|
{
|
|
SHA2_CONTEXT *hd = (SHA2_CONTEXT *) context;
|
|
sha2_final(context);
|
|
memcpy(digest, hd->buf, 256/8);
|
|
}
|
|
|
|
hashfunc_t hash_sha224 =
|
|
{
|
|
224/8,
|
|
sizeof(SHA2_CONTEXT),
|
|
sha224_init,
|
|
sha2_write,
|
|
sha224_finish
|
|
};
|
|
hashfunc_t hash_sha256 =
|
|
{
|
|
256/8,
|
|
sizeof(SHA2_CONTEXT),
|
|
sha256_init,
|
|
sha2_write,
|
|
sha256_finish
|
|
};
|
|
#endif
|
|
#if SHA2==512
|
|
static void sha384_finish (qbyte *digest, void *context)
|
|
{
|
|
SHA2_CONTEXT *hd = (SHA2_CONTEXT *) context;
|
|
sha2_final(context);
|
|
memcpy(digest, hd->buf, 384/8);
|
|
}
|
|
|
|
static void sha512_finish (qbyte *digest, void *context)
|
|
{
|
|
SHA2_CONTEXT *hd = (SHA2_CONTEXT *) context;
|
|
sha2_final(context);
|
|
memcpy(digest, hd->buf, 512/8);
|
|
}
|
|
|
|
hashfunc_t hash_sha384 =
|
|
{
|
|
384/8,
|
|
sizeof(SHA2_CONTEXT),
|
|
sha384_init,
|
|
sha2_write,
|
|
sha384_finish
|
|
};
|
|
hashfunc_t hash_sha512 =
|
|
{
|
|
512/8,
|
|
sizeof(SHA2_CONTEXT),
|
|
sha512_init,
|
|
sha2_write,
|
|
sha512_finish
|
|
};
|
|
#endif
|