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29e6411a7b
rijndael.c, rndunix.c, sha256.c, cast5.c, idea-stub.c, rmd160.c, rndw32.c, sha512.c, md5.c, rmd160test.c, rsa.c, tiger.c: Edit all preprocessor instructions to remove whitespace before the '#'. This is not required by C89, but there are some compilers out there that don't like it.
430 lines
12 KiB
C
430 lines
12 KiB
C
/* sha512.c - SHA384 and SHA512 hash functions
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* Copyright (C) 2003 Free Software Foundation, Inc.
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*
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* Please see below for more legal information!
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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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 <config.h>
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#include <string.h>
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#include "util.h"
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#include "algorithms.h"
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typedef struct {
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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[128];
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int count;
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} SHA512_CONTEXT;
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static void
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burn_stack (int bytes)
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{
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char buf[128];
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wipememory(buf,sizeof buf);
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bytes -= sizeof buf;
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if (bytes > 0)
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burn_stack (bytes);
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}
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void
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sha512_init( SHA512_CONTEXT *hd )
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{
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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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void
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sha384_init( SHA512_CONTEXT *hd )
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{
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hd->h0 = U64_C(0xcbbb9d5dc1059ed8);
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hd->h1 = U64_C(0x629a292a367cd507);
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hd->h2 = U64_C(0x9159015a3070dd17);
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hd->h3 = U64_C(0x152fecd8f70e5939);
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hd->h4 = U64_C(0x67332667ffc00b31);
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hd->h5 = U64_C(0x8eb44a8768581511);
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hd->h6 = U64_C(0xdb0c2e0d64f98fa7);
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hd->h7 = U64_C(0x47b5481dbefa4fa4);
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hd->nblocks = 0;
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hd->count = 0;
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}
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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( SHA512_CONTEXT *hd, byte *data )
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{
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u64 a,b,c,d,e,f,g,h;
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u64 w[80];
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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 BIG_ENDIAN_HOST
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memcpy( w, data, 128 );
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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 += 8 )
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{
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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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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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#define ROTR(x,n) (((x)>>(n)) | ((x)<<(64-(n))))
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#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
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#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
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#define Sum0(x) (ROTR((x),28) ^ ROTR((x),34) ^ ROTR((x),39))
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#define Sum1(x) (ROTR((x),14) ^ ROTR((x),18) ^ ROTR((x),41))
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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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for(t=16;t<80;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<80;t++)
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{
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u64 t1,t2;
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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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/* printf("t=%d a=%016llX b=%016llX c=%016llX d=%016llX e=%016llX f=%016llX g=%016llX h=%016llX\n",t,a,b,c,d,e,f,g,h); */
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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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sha512_write( SHA512_CONTEXT *hd, byte *inbuf, size_t inlen)
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{
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if( hd->count == 128 ) { /* flush the buffer */
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transform( hd, hd->buf );
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burn_stack (768);
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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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for( ; inlen && hd->count < 128; inlen-- )
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hd->buf[hd->count++] = *inbuf++;
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sha512_write( hd, NULL, 0 );
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if( !inlen )
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return;
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}
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while( inlen >= 128 ) {
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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 -= 128;
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inbuf += 128;
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}
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burn_stack (768);
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for( ; inlen && hd->count < 128; 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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sha512_final(SHA512_CONTEXT *hd)
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{
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u64 t, msb, lsb;
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byte *p;
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sha512_write(hd, 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 << 7;
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msb = t >> 57;
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/* add the count */
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t = lsb;
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if( (lsb += hd->count) < t )
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msb++;
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/* multiply by 8 to make a bit count */
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t = lsb;
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lsb <<= 3;
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msb <<= 3;
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msb |= t >> 61;
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if( hd->count < 112 ) { /* enough room */
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hd->buf[hd->count++] = 0x80; /* pad */
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while( hd->count < 112 )
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hd->buf[hd->count++] = 0; /* pad */
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}
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else { /* need one extra block */
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hd->buf[hd->count++] = 0x80; /* pad character */
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while( hd->count < 128 )
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hd->buf[hd->count++] = 0;
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sha512_write(hd, NULL, 0); /* flush */;
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memset(hd->buf, 0, 112 ); /* fill next block with zeroes */
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}
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/* append the 128 bit count */
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hd->buf[112] = msb >> 56;
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hd->buf[113] = msb >> 48;
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hd->buf[114] = msb >> 40;
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hd->buf[115] = msb >> 32;
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hd->buf[116] = msb >> 24;
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hd->buf[117] = msb >> 16;
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hd->buf[118] = msb >> 8;
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hd->buf[119] = msb ;
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hd->buf[120] = lsb >> 56;
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hd->buf[121] = lsb >> 48;
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hd->buf[122] = lsb >> 40;
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hd->buf[123] = lsb >> 32;
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hd->buf[124] = lsb >> 24;
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hd->buf[125] = lsb >> 16;
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hd->buf[126] = lsb >> 8;
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hd->buf[127] = lsb ;
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transform( hd, hd->buf );
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burn_stack (768);
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p = hd->buf;
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#ifdef BIG_ENDIAN_HOST
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#define X(a) do { *(u64*)p = hd->h##a ; p += 8; } while(0)
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#else /* little endian */
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#define X(a) do { *p++ = hd->h##a >> 56; *p++ = hd->h##a >> 48; \
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*p++ = hd->h##a >> 40; *p++ = hd->h##a >> 32; \
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*p++ = hd->h##a >> 24; *p++ = hd->h##a >> 16; \
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*p++ = hd->h##a >> 8; *p++ = hd->h##a; } while(0)
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#endif
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X(0);
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X(1);
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X(2);
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X(3);
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X(4);
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X(5);
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/* Note that these last two chunks are included even for SHA384.
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We just ignore them. */
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X(6);
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X(7);
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#undef X
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}
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static byte *
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sha512_read( SHA512_CONTEXT *hd )
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{
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return hd->buf;
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}
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/****************
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* Return some information about the algorithm. We need algo here to
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* distinguish different flavors of the algorithm.
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* Returns: A pointer to string describing the algorithm or NULL if
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* the ALGO is invalid.
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*/
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const char *
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sha512_get_info( int algo, size_t *contextsize,
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byte **r_asnoid, int *r_asnlen, int *r_mdlen,
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void (**r_init)( void *c ),
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void (**r_write)( void *c, byte *buf, size_t nbytes ),
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void (**r_final)( void *c ),
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byte *(**r_read)( void *c )
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)
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{
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static byte asn[] = /* Object ID is 2.16.840.1.101.3.4.2.3 */
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{
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0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
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0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05,
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0x00, 0x04, 0x40
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};
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if( algo != 10 )
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return NULL;
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*contextsize = sizeof(SHA512_CONTEXT);
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*r_asnoid = asn;
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*r_asnlen = DIM(asn);
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*r_mdlen = 64;
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*(void (**)(SHA512_CONTEXT *))r_init = sha512_init;
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*(void (**)(SHA512_CONTEXT *, byte*, size_t))r_write = sha512_write;
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*(void (**)(SHA512_CONTEXT *))r_final = sha512_final;
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*(byte *(**)(SHA512_CONTEXT *))r_read = sha512_read;
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return "SHA512";
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}
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/* SHA384 is really a truncated SHA512 with a different
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initialization */
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const char *
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sha384_get_info( int algo, size_t *contextsize,
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byte **r_asnoid, int *r_asnlen, int *r_mdlen,
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void (**r_init)( void *c ),
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void (**r_write)( void *c, byte *buf, size_t nbytes ),
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void (**r_final)( void *c ),
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byte *(**r_read)( void *c )
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)
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{
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static byte asn[] = /* Object ID is 2.16.840.1.101.3.4.2.2 */
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{
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0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
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0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05,
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0x00, 0x04, 0x30
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};
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if( algo != 9 )
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return NULL;
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*contextsize = sizeof(SHA512_CONTEXT);
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*r_asnoid = asn;
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*r_asnlen = DIM(asn);
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*r_mdlen = 48;
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*(void (**)(SHA512_CONTEXT *))r_init = sha384_init;
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*(void (**)(SHA512_CONTEXT *, byte*, size_t))r_write = sha512_write;
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*(void (**)(SHA512_CONTEXT *))r_final = sha512_final;
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*(byte *(**)(SHA512_CONTEXT *))r_read = sha512_read;
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|
|
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return "SHA384";
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}
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