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223 lines
8.3 KiB
223 lines
8.3 KiB
/* |
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* Cryptographic API. |
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* |
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* SHA-256, as specified in |
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* http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf |
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* |
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* SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>. |
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* |
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* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com> |
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* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> |
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* Copyright (c) 2002 James Morris <jmorris@intercode.com.au> |
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* SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com> |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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*/ |
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#include <stdint.h> |
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typedef uint32_t u32; |
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typedef uint8_t u8; |
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static inline u32 ror32(u32 word, unsigned int shift) |
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{ |
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return (word >> shift) | (word << (32 - shift)); |
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} |
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static inline u32 Ch(u32 x, u32 y, u32 z) |
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{ |
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return z ^ (x & (y ^ z)); |
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} |
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static inline u32 Maj(u32 x, u32 y, u32 z) |
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{ |
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return (x & y) | (z & (x | y)); |
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} |
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#define e0(x) (ror32(x, 2) ^ ror32(x,13) ^ ror32(x,22)) |
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#define e1(x) (ror32(x, 6) ^ ror32(x,11) ^ ror32(x,25)) |
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#define s0(x) (ror32(x, 7) ^ ror32(x,18) ^ (x >> 3)) |
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#define s1(x) (ror32(x,17) ^ ror32(x,19) ^ (x >> 10)) |
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static inline void LOAD_OP(int I, u32 *W, const u8 *input) |
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{ |
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/* byteswap is commented out, because bitcoin input |
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* is already big-endian |
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*/ |
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W[I] = /* ntohl */ ( ((u32*)(input))[I] ); |
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} |
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static inline void BLEND_OP(int I, u32 *W) |
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{ |
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W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16]; |
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} |
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static void sha256_transform(u32 *state, const u8 *input) |
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{ |
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u32 a, b, c, d, e, f, g, h, t1, t2; |
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u32 W[64]; |
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int i; |
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/* load the input */ |
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for (i = 0; i < 16; i++) |
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LOAD_OP(i, W, input); |
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/* now blend */ |
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for (i = 16; i < 64; i++) |
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BLEND_OP(i, W); |
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/* load the state into our registers */ |
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a=state[0]; b=state[1]; c=state[2]; d=state[3]; |
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e=state[4]; f=state[5]; g=state[6]; h=state[7]; |
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/* now iterate */ |
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t1 = h + e1(e) + Ch(e,f,g) + 0x428a2f98 + W[ 0]; |
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; |
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t1 = g + e1(d) + Ch(d,e,f) + 0x71374491 + W[ 1]; |
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; |
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t1 = f + e1(c) + Ch(c,d,e) + 0xb5c0fbcf + W[ 2]; |
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; |
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t1 = e + e1(b) + Ch(b,c,d) + 0xe9b5dba5 + W[ 3]; |
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; |
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t1 = d + e1(a) + Ch(a,b,c) + 0x3956c25b + W[ 4]; |
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; |
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t1 = c + e1(h) + Ch(h,a,b) + 0x59f111f1 + W[ 5]; |
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t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; |
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t1 = b + e1(g) + Ch(g,h,a) + 0x923f82a4 + W[ 6]; |
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t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; |
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t1 = a + e1(f) + Ch(f,g,h) + 0xab1c5ed5 + W[ 7]; |
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t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; |
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t1 = h + e1(e) + Ch(e,f,g) + 0xd807aa98 + W[ 8]; |
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; |
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t1 = g + e1(d) + Ch(d,e,f) + 0x12835b01 + W[ 9]; |
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; |
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t1 = f + e1(c) + Ch(c,d,e) + 0x243185be + W[10]; |
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; |
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t1 = e + e1(b) + Ch(b,c,d) + 0x550c7dc3 + W[11]; |
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; |
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t1 = d + e1(a) + Ch(a,b,c) + 0x72be5d74 + W[12]; |
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; |
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t1 = c + e1(h) + Ch(h,a,b) + 0x80deb1fe + W[13]; |
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t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; |
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t1 = b + e1(g) + Ch(g,h,a) + 0x9bdc06a7 + W[14]; |
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t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; |
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t1 = a + e1(f) + Ch(f,g,h) + 0xc19bf174 + W[15]; |
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t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; |
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t1 = h + e1(e) + Ch(e,f,g) + 0xe49b69c1 + W[16]; |
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; |
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t1 = g + e1(d) + Ch(d,e,f) + 0xefbe4786 + W[17]; |
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; |
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t1 = f + e1(c) + Ch(c,d,e) + 0x0fc19dc6 + W[18]; |
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; |
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t1 = e + e1(b) + Ch(b,c,d) + 0x240ca1cc + W[19]; |
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; |
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t1 = d + e1(a) + Ch(a,b,c) + 0x2de92c6f + W[20]; |
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; |
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t1 = c + e1(h) + Ch(h,a,b) + 0x4a7484aa + W[21]; |
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t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; |
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t1 = b + e1(g) + Ch(g,h,a) + 0x5cb0a9dc + W[22]; |
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t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; |
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t1 = a + e1(f) + Ch(f,g,h) + 0x76f988da + W[23]; |
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t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; |
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t1 = h + e1(e) + Ch(e,f,g) + 0x983e5152 + W[24]; |
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; |
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t1 = g + e1(d) + Ch(d,e,f) + 0xa831c66d + W[25]; |
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; |
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t1 = f + e1(c) + Ch(c,d,e) + 0xb00327c8 + W[26]; |
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; |
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t1 = e + e1(b) + Ch(b,c,d) + 0xbf597fc7 + W[27]; |
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; |
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t1 = d + e1(a) + Ch(a,b,c) + 0xc6e00bf3 + W[28]; |
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; |
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t1 = c + e1(h) + Ch(h,a,b) + 0xd5a79147 + W[29]; |
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t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; |
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t1 = b + e1(g) + Ch(g,h,a) + 0x06ca6351 + W[30]; |
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t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; |
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t1 = a + e1(f) + Ch(f,g,h) + 0x14292967 + W[31]; |
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t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; |
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t1 = h + e1(e) + Ch(e,f,g) + 0x27b70a85 + W[32]; |
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; |
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t1 = g + e1(d) + Ch(d,e,f) + 0x2e1b2138 + W[33]; |
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; |
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t1 = f + e1(c) + Ch(c,d,e) + 0x4d2c6dfc + W[34]; |
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; |
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t1 = e + e1(b) + Ch(b,c,d) + 0x53380d13 + W[35]; |
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; |
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t1 = d + e1(a) + Ch(a,b,c) + 0x650a7354 + W[36]; |
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; |
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t1 = c + e1(h) + Ch(h,a,b) + 0x766a0abb + W[37]; |
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t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; |
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t1 = b + e1(g) + Ch(g,h,a) + 0x81c2c92e + W[38]; |
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t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; |
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t1 = a + e1(f) + Ch(f,g,h) + 0x92722c85 + W[39]; |
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t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; |
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t1 = h + e1(e) + Ch(e,f,g) + 0xa2bfe8a1 + W[40]; |
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; |
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t1 = g + e1(d) + Ch(d,e,f) + 0xa81a664b + W[41]; |
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; |
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t1 = f + e1(c) + Ch(c,d,e) + 0xc24b8b70 + W[42]; |
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; |
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t1 = e + e1(b) + Ch(b,c,d) + 0xc76c51a3 + W[43]; |
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; |
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t1 = d + e1(a) + Ch(a,b,c) + 0xd192e819 + W[44]; |
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; |
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t1 = c + e1(h) + Ch(h,a,b) + 0xd6990624 + W[45]; |
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t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; |
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t1 = b + e1(g) + Ch(g,h,a) + 0xf40e3585 + W[46]; |
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t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; |
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t1 = a + e1(f) + Ch(f,g,h) + 0x106aa070 + W[47]; |
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t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; |
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t1 = h + e1(e) + Ch(e,f,g) + 0x19a4c116 + W[48]; |
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; |
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t1 = g + e1(d) + Ch(d,e,f) + 0x1e376c08 + W[49]; |
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; |
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t1 = f + e1(c) + Ch(c,d,e) + 0x2748774c + W[50]; |
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; |
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t1 = e + e1(b) + Ch(b,c,d) + 0x34b0bcb5 + W[51]; |
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; |
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t1 = d + e1(a) + Ch(a,b,c) + 0x391c0cb3 + W[52]; |
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; |
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t1 = c + e1(h) + Ch(h,a,b) + 0x4ed8aa4a + W[53]; |
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t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; |
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t1 = b + e1(g) + Ch(g,h,a) + 0x5b9cca4f + W[54]; |
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t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; |
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t1 = a + e1(f) + Ch(f,g,h) + 0x682e6ff3 + W[55]; |
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t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; |
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t1 = h + e1(e) + Ch(e,f,g) + 0x748f82ee + W[56]; |
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; |
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t1 = g + e1(d) + Ch(d,e,f) + 0x78a5636f + W[57]; |
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; |
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t1 = f + e1(c) + Ch(c,d,e) + 0x84c87814 + W[58]; |
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; |
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t1 = e + e1(b) + Ch(b,c,d) + 0x8cc70208 + W[59]; |
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; |
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t1 = d + e1(a) + Ch(a,b,c) + 0x90befffa + W[60]; |
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; |
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t1 = c + e1(h) + Ch(h,a,b) + 0xa4506ceb + W[61]; |
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t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; |
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t1 = b + e1(g) + Ch(g,h,a) + 0xbef9a3f7 + W[62]; |
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t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; |
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t1 = a + e1(f) + Ch(f,g,h) + 0xc67178f2 + W[63]; |
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t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; |
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state[0] += a; state[1] += b; state[2] += c; state[3] += d; |
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state[4] += e; state[5] += f; state[6] += g; state[7] += h; |
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#if 0 |
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/* clear any sensitive info... */ |
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a = b = c = d = e = f = g = h = t1 = t2 = 0; |
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memset(W, 0, 64 * sizeof(u32)); |
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#endif |
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} |
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