468 lines
13 KiB
C
468 lines
13 KiB
C
/*-
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* Copyright (c) 2014-2015 Carsten Larsen
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* Copyright (c) 2001-2003 Allan Saddi <allan@saddi.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY ALLAN SADDI AND HIS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL ALLAN SADDI OR HIS CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* Define WORDS_BIGENDIAN if compiling on a big-endian architecture.
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*
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* Define SHA512_TEST to test the implementation using the NIST's
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* sample messages. The output should be:
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*
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* ddaf35a193617aba cc417349ae204131 12e6fa4e89a97ea2 0a9eeee64b55d39a
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* 2192992a274fc1a8 36ba3c23a3feebbd 454d4423643ce80e 2a9ac94fa54ca49f
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* 8e959b75dae313da 8cf4f72814fc143f 8f7779c6eb9f7fa1 7299aeadb6889018
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* 501d289e4900f7e4 331b99dec4b5433a c7d329eeb6dd2654 5e96e55b874be909
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* e718483d0ce76964 4e2e42c7bc15b463 8e1f98b13b204428 5632a803afa973eb
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* de0ff244877ea60a 4cb0432ce577c31b eb009c5c2c49aa2e 4eadb217ad8cc09b
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*/
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#include "compiler.h"
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#include "sha512.h"
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#define ROTL(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
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#define ROTR(x, n) (((x) >> (n)) | ((x) << (32 - (n))))
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#define ROTL64(x, n) (((x) << (n)) | ((x) >> (64 - (n))))
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#define ROTR64(x, n) (((x) >> (n)) | ((x) << (64 - (n))))
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#define Ch(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
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#define Maj(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
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#define SIGMA0(x) (ROTR64((x), 28) ^ ROTR64((x), 34) ^ ROTR64((x), 39))
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#define SIGMA1(x) (ROTR64((x), 14) ^ ROTR64((x), 18) ^ ROTR64((x), 41))
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#define sigma0(x) (ROTR64((x), 1) ^ ROTR64((x), 8) ^ ((x) >> 7))
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#define sigma1(x) (ROTR64((x), 19) ^ ROTR64((x), 61) ^ ((x) >> 6))
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#define DO_ROUND() { \
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t1 = h + SIGMA1(e) + Ch(e, f, g) + *(Kp++) + *(W++); \
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t2 = SIGMA0(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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}
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static const uint64_t K[80] = {
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0x428a2f98d728ae22LL, 0x7137449123ef65cdLL,
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0xb5c0fbcfec4d3b2fLL, 0xe9b5dba58189dbbcLL,
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0x3956c25bf348b538LL, 0x59f111f1b605d019LL,
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0x923f82a4af194f9bLL, 0xab1c5ed5da6d8118LL,
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0xd807aa98a3030242LL, 0x12835b0145706fbeLL,
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0x243185be4ee4b28cLL, 0x550c7dc3d5ffb4e2LL,
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0x72be5d74f27b896fLL, 0x80deb1fe3b1696b1LL,
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0x9bdc06a725c71235LL, 0xc19bf174cf692694LL,
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0xe49b69c19ef14ad2LL, 0xefbe4786384f25e3LL,
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0x0fc19dc68b8cd5b5LL, 0x240ca1cc77ac9c65LL,
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0x2de92c6f592b0275LL, 0x4a7484aa6ea6e483LL,
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0x5cb0a9dcbd41fbd4LL, 0x76f988da831153b5LL,
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0x983e5152ee66dfabLL, 0xa831c66d2db43210LL,
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0xb00327c898fb213fLL, 0xbf597fc7beef0ee4LL,
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0xc6e00bf33da88fc2LL, 0xd5a79147930aa725LL,
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0x06ca6351e003826fLL, 0x142929670a0e6e70LL,
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0x27b70a8546d22ffcLL, 0x2e1b21385c26c926LL,
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0x4d2c6dfc5ac42aedLL, 0x53380d139d95b3dfLL,
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0x650a73548baf63deLL, 0x766a0abb3c77b2a8LL,
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0x81c2c92e47edaee6LL, 0x92722c851482353bLL,
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0xa2bfe8a14cf10364LL, 0xa81a664bbc423001LL,
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0xc24b8b70d0f89791LL, 0xc76c51a30654be30LL,
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0xd192e819d6ef5218LL, 0xd69906245565a910LL,
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0xf40e35855771202aLL, 0x106aa07032bbd1b8LL,
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0x19a4c116b8d2d0c8LL, 0x1e376c085141ab53LL,
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0x2748774cdf8eeb99LL, 0x34b0bcb5e19b48a8LL,
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0x391c0cb3c5c95a63LL, 0x4ed8aa4ae3418acbLL,
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0x5b9cca4f7763e373LL, 0x682e6ff3d6b2b8a3LL,
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0x748f82ee5defb2fcLL, 0x78a5636f43172f60LL,
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0x84c87814a1f0ab72LL, 0x8cc702081a6439ecLL,
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0x90befffa23631e28LL, 0xa4506cebde82bde9LL,
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0xbef9a3f7b2c67915LL, 0xc67178f2e372532bLL,
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0xca273eceea26619cLL, 0xd186b8c721c0c207LL,
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0xeada7dd6cde0eb1eLL, 0xf57d4f7fee6ed178LL,
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0x06f067aa72176fbaLL, 0x0a637dc5a2c898a6LL,
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0x113f9804bef90daeLL, 0x1b710b35131c471bLL,
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0x28db77f523047d84LL, 0x32caab7b40c72493LL,
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0x3c9ebe0a15c9bebcLL, 0x431d67c49c100d4cLL,
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0x4cc5d4becb3e42b6LL, 0x597f299cfc657e2aLL,
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0x5fcb6fab3ad6faecLL, 0x6c44198c4a475817LL
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};
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#ifndef RUNTIME_ENDIAN
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#ifdef WORDS_BIGENDIAN
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#define BYTESWAP(x) (x)
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#define BYTESWAP64(x) (x)
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#else /* WORDS_BIGENDIAN */
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#define BYTESWAP(x) ((ROTR((x), 8) & 0xff00ff00L) | \
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(ROTL((x), 8) & 0x00ff00ffL))
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#define BYTESWAP64(x) _byteswap64(x)
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static inline uint64_t _byteswap64(uint64_t x)
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{
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uint32_t a = x >> 32;
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uint32_t b = (uint32_t) x;
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return ((uint64_t) BYTESWAP(b) << 32) | (uint64_t) BYTESWAP(a);
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}
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#endif /* WORDS_BIGENDIAN */
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#else /* !RUNTIME_ENDIAN */
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#define BYTESWAP(x) _byteswap(sc->littleEndian, x)
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#define BYTESWAP64(x) _byteswap64(sc->littleEndian, x)
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#define _BYTESWAP(x) ((ROTR((x), 8) & 0xff00ff00L) | \
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(ROTL((x), 8) & 0x00ff00ffL))
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#define _BYTESWAP64(x) __byteswap64(x)
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static inline uint64_t __byteswap64(uint64_t x)
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{
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uint32_t a = x >> 32;
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uint32_t b = (uint32_t) x;
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return ((uint64_t) _BYTESWAP(b) << 32) | (uint64_t) _BYTESWAP(a);
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}
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static inline uint32_t _byteswap(int littleEndian, uint32_t x)
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{
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if (!littleEndian)
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return x;
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else
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return _BYTESWAP(x);
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}
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static inline uint64_t _byteswap64(int littleEndian, uint64_t x)
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{
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if (!littleEndian)
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return x;
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else
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return _BYTESWAP64(x);
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}
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static inline void setEndian(int *littleEndianp)
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{
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union {
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uint32_t w;
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uint8_t b[4];
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} endian;
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endian.w = 1L;
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*littleEndianp = endian.b[0] != 0;
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}
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#endif /* !RUNTIME_ENDIAN */
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static const uint8_t padding[128] = {
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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void
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SHA512Init (SHA512Context *sc)
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{
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#ifdef RUNTIME_ENDIAN
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setEndian (&sc->littleEndian);
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#endif /* RUNTIME_ENDIAN */
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sc->totalLength[0] = 0LL;
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sc->totalLength[1] = 0LL;
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sc->hash[0] = 0x6a09e667f3bcc908LL;
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sc->hash[1] = 0xbb67ae8584caa73bLL;
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sc->hash[2] = 0x3c6ef372fe94f82bLL;
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sc->hash[3] = 0xa54ff53a5f1d36f1LL;
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sc->hash[4] = 0x510e527fade682d1LL;
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sc->hash[5] = 0x9b05688c2b3e6c1fLL;
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sc->hash[6] = 0x1f83d9abfb41bd6bLL;
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sc->hash[7] = 0x5be0cd19137e2179LL;
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sc->bufferLength = 0L;
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}
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static void
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burnStack (int size)
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{
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char buf[128];
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memset (buf, 0, sizeof (buf));
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size -= sizeof (buf);
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if (size > 0)
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burnStack (size);
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}
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static void
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SHA512Guts (SHA512Context *sc, const uint64_t *cbuf)
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{
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uint64_t buf[80];
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uint64_t *W, *W2, *W7, *W15, *W16;
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uint64_t a, b, c, d, e, f, g, h;
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uint64_t t1, t2;
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const uint64_t *Kp;
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int i;
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W = buf;
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for (i = 15; i >= 0; i--) {
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*(W++) = BYTESWAP64(*cbuf);
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cbuf++;
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}
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W16 = &buf[0];
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W15 = &buf[1];
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W7 = &buf[9];
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W2 = &buf[14];
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for (i = 63; i >= 0; i--) {
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*(W++) = sigma1(*W2) + *(W7++) + sigma0(*W15) + *(W16++);
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W2++;
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W15++;
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}
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a = sc->hash[0];
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b = sc->hash[1];
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c = sc->hash[2];
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d = sc->hash[3];
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e = sc->hash[4];
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f = sc->hash[5];
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g = sc->hash[6];
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h = sc->hash[7];
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Kp = K;
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W = buf;
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for (i = 79; i >= 0; i--)
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DO_ROUND();
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sc->hash[0] += a;
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sc->hash[1] += b;
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sc->hash[2] += c;
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sc->hash[3] += d;
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sc->hash[4] += e;
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sc->hash[5] += f;
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sc->hash[6] += g;
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sc->hash[7] += h;
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}
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void
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SHA512Update (SHA512Context *sc, const void *vdata, uint32_t len)
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{
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const uint8_t *data = vdata;
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uint32_t bufferBytesLeft;
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uint32_t bytesToCopy;
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uint64_t carryCheck;
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int needBurn = 0;
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#ifdef SHA512_FAST_COPY
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if (sc->bufferLength) {
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bufferBytesLeft = 128L - sc->bufferLength;
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bytesToCopy = bufferBytesLeft;
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if (bytesToCopy > len)
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bytesToCopy = len;
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memcpy (&sc->buffer.bytes[sc->bufferLength], data, bytesToCopy);
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carryCheck = sc->totalLength[1];
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sc->totalLength[1] += bytesToCopy * 8L;
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if (sc->totalLength[1] < carryCheck)
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sc->totalLength[0]++;
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sc->bufferLength += bytesToCopy;
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data += bytesToCopy;
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len -= bytesToCopy;
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if (sc->bufferLength == 128L) {
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SHA512Guts (sc, sc->buffer.words);
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needBurn = 1;
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sc->bufferLength = 0L;
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}
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}
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while (len > 127) {
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carryCheck = sc->totalLength[1];
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sc->totalLength[1] += 1024L;
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if (sc->totalLength[1] < carryCheck)
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sc->totalLength[0]++;
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SHA512Guts (sc, data);
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needBurn = 1;
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data += 128L;
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len -= 128L;
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}
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if (len) {
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memcpy (&sc->buffer.bytes[sc->bufferLength], data, len);
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carryCheck = sc->totalLength[1];
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sc->totalLength[1] += len * 8L;
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if (sc->totalLength[1] < carryCheck)
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sc->totalLength[0]++;
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sc->bufferLength += len;
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}
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#else /* SHA512_FAST_COPY */
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while (len) {
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bufferBytesLeft = 128L - sc->bufferLength;
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bytesToCopy = bufferBytesLeft;
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if (bytesToCopy > len)
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bytesToCopy = len;
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memcpy (&sc->buffer.bytes[sc->bufferLength], data, bytesToCopy);
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carryCheck = sc->totalLength[1];
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sc->totalLength[1] += bytesToCopy * 8L;
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if (sc->totalLength[1] < carryCheck)
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sc->totalLength[0]++;
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sc->bufferLength += bytesToCopy;
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data += bytesToCopy;
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len -= bytesToCopy;
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if (sc->bufferLength == 128L) {
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SHA512Guts (sc, sc->buffer.words);
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needBurn = 1;
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sc->bufferLength = 0L;
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}
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}
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#endif /* SHA512_FAST_COPY */
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if (needBurn)
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burnStack (sizeof (uint64_t[90]) + sizeof (uint64_t *[6]) + sizeof (int));
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}
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void
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SHA512Final (SHA512Context *sc, uint8_t hash[SHA512_HASH_SIZE])
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{
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uint32_t bytesToPad;
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uint64_t lengthPad[2];
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int i;
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bytesToPad = 240L - sc->bufferLength;
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if (bytesToPad > 128L)
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bytesToPad -= 128L;
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lengthPad[0] = BYTESWAP64(sc->totalLength[0]);
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lengthPad[1] = BYTESWAP64(sc->totalLength[1]);
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SHA512Update (sc, padding, bytesToPad);
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SHA512Update (sc, lengthPad, 16L);
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if (hash) {
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for (i = 0; i < SHA512_HASH_WORDS; i++) {
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#ifdef SHA384_FAST_COPY
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*((uint64_t *) hash) = BYTESWAP64(sc->hash[i]);
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#else /* SHA384_FAST_COPY */
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hash[0] = (uint8_t) (sc->hash[i] >> 56);
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hash[1] = (uint8_t) (sc->hash[i] >> 48);
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hash[2] = (uint8_t) (sc->hash[i] >> 40);
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hash[3] = (uint8_t) (sc->hash[i] >> 32);
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hash[4] = (uint8_t) (sc->hash[i] >> 24);
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hash[5] = (uint8_t) (sc->hash[i] >> 16);
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hash[6] = (uint8_t) (sc->hash[i] >> 8);
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hash[7] = (uint8_t) sc->hash[i];
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#endif /* SHA384_FAST_COPY */
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hash += 8;
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}
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}
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}
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#ifdef SHA512_TEST
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int
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main (int argc, char *argv[])
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{
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SHA512Context foo;
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uint8_t hash[SHA512_HASH_SIZE];
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char buf[1000];
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int i;
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SHA512Init (&foo);
|
|
SHA512Update (&foo, "abc", 3);
|
|
SHA512Final (&foo, hash);
|
|
|
|
for (i = 0; i < SHA512_HASH_SIZE;) {
|
|
printf ("%02x", hash[i++]);
|
|
if (!(i % 8))
|
|
printf (" ");
|
|
if (!(i % 32))
|
|
printf ("\n");
|
|
}
|
|
|
|
SHA512Init (&foo);
|
|
SHA512Update (&foo,
|
|
"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
|
|
"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
|
|
112);
|
|
SHA512Final (&foo, hash);
|
|
|
|
for (i = 0; i < SHA512_HASH_SIZE;) {
|
|
printf ("%02x", hash[i++]);
|
|
if (!(i % 8))
|
|
printf (" ");
|
|
if (!(i % 32))
|
|
printf ("\n");
|
|
}
|
|
|
|
SHA512Init (&foo);
|
|
memset (buf, 'a', sizeof (buf));
|
|
for (i = 0; i < 1000; i++)
|
|
SHA512Update (&foo, buf, sizeof (buf));
|
|
SHA512Final (&foo, hash);
|
|
|
|
for (i = 0; i < SHA512_HASH_SIZE;) {
|
|
printf ("%02x", hash[i++]);
|
|
if (!(i % 8))
|
|
printf (" ");
|
|
if (!(i % 32))
|
|
printf ("\n");
|
|
}
|
|
|
|
exit (0);
|
|
}
|
|
|
|
#endif /* SHA512_TEST */
|