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Diffstat (limited to 'src/lib/lib7z/Sha256.c')
-rw-r--r-- | src/lib/lib7z/Sha256.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/src/lib/lib7z/Sha256.c b/src/lib/lib7z/Sha256.c deleted file mode 100644 index fd330df36cf..00000000000 --- a/src/lib/lib7z/Sha256.c +++ /dev/null @@ -1,204 +0,0 @@ -/* Crypto/Sha256.c -- SHA-256 Hash -2010-06-11 : Igor Pavlov : Public domain -This code is based on public domain code from Wei Dai's Crypto++ library. */ - -#include "RotateDefs.h" -#include "Sha256.h" - -/* define it for speed optimization */ -/* #define _SHA256_UNROLL */ -/* #define _SHA256_UNROLL2 */ - -void Sha256_Init(CSha256 *p) -{ - p->state[0] = 0x6a09e667; - p->state[1] = 0xbb67ae85; - p->state[2] = 0x3c6ef372; - p->state[3] = 0xa54ff53a; - p->state[4] = 0x510e527f; - p->state[5] = 0x9b05688c; - p->state[6] = 0x1f83d9ab; - p->state[7] = 0x5be0cd19; - p->count = 0; -} - -#define S0(x) (rotrFixed(x, 2) ^ rotrFixed(x,13) ^ rotrFixed(x, 22)) -#define S1(x) (rotrFixed(x, 6) ^ rotrFixed(x,11) ^ rotrFixed(x, 25)) -#define s0(x) (rotrFixed(x, 7) ^ rotrFixed(x,18) ^ (x >> 3)) -#define s1(x) (rotrFixed(x,17) ^ rotrFixed(x,19) ^ (x >> 10)) - -#define blk0(i) (W[i] = data[i]) -#define blk2(i) (W[i&15] += s1(W[(i-2)&15]) + W[(i-7)&15] + s0(W[(i-15)&15])) - -#define Ch(x,y,z) (z^(x&(y^z))) -#define Maj(x,y,z) ((x&y)|(z&(x|y))) - -#define a(i) T[(0-(i))&7] -#define b(i) T[(1-(i))&7] -#define c(i) T[(2-(i))&7] -#define d(i) T[(3-(i))&7] -#define e(i) T[(4-(i))&7] -#define f(i) T[(5-(i))&7] -#define g(i) T[(6-(i))&7] -#define h(i) T[(7-(i))&7] - - -#ifdef _SHA256_UNROLL2 - -#define R(a,b,c,d,e,f,g,h, i) h += S1(e) + Ch(e,f,g) + K[i+j] + (j?blk2(i):blk0(i));\ - d += h; h += S0(a) + Maj(a, b, c) - -#define RX_8(i) \ - R(a,b,c,d,e,f,g,h, i); \ - R(h,a,b,c,d,e,f,g, i+1); \ - R(g,h,a,b,c,d,e,f, i+2); \ - R(f,g,h,a,b,c,d,e, i+3); \ - R(e,f,g,h,a,b,c,d, i+4); \ - R(d,e,f,g,h,a,b,c, i+5); \ - R(c,d,e,f,g,h,a,b, i+6); \ - R(b,c,d,e,f,g,h,a, i+7) - -#else - -#define R(i) h(i) += S1(e(i)) + Ch(e(i),f(i),g(i)) + K[i+j] + (j?blk2(i):blk0(i));\ - d(i) += h(i); h(i) += S0(a(i)) + Maj(a(i), b(i), c(i)) - -#ifdef _SHA256_UNROLL - -#define RX_8(i) R(i+0); R(i+1); R(i+2); R(i+3); R(i+4); R(i+5); R(i+6); R(i+7); - -#endif - -#endif - -static const UInt32 K[64] = { - 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, - 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, - 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, - 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, - 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, - 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, - 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, - 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, - 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, - 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, - 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, - 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, - 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, - 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, - 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, - 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 -}; - -static void Sha256_Transform(UInt32 *state, const UInt32 *data) -{ - UInt32 W[16]; - unsigned j; - #ifdef _SHA256_UNROLL2 - UInt32 a,b,c,d,e,f,g,h; - a = state[0]; - b = state[1]; - c = state[2]; - d = state[3]; - e = state[4]; - f = state[5]; - g = state[6]; - h = state[7]; - #else - UInt32 T[8]; - for (j = 0; j < 8; j++) - T[j] = state[j]; - #endif - - for (j = 0; j < 64; j += 16) - { - #if defined(_SHA256_UNROLL) || defined(_SHA256_UNROLL2) - RX_8(0); RX_8(8); - #else - unsigned i; - for (i = 0; i < 16; i++) { R(i); } - #endif - } - - #ifdef _SHA256_UNROLL2 - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - state[4] += e; - state[5] += f; - state[6] += g; - state[7] += h; - #else - for (j = 0; j < 8; j++) - state[j] += T[j]; - #endif - - /* Wipe variables */ - /* memset(W, 0, sizeof(W)); */ - /* memset(T, 0, sizeof(T)); */ -} - -#undef S0 -#undef S1 -#undef s0 -#undef s1 - -static void Sha256_WriteByteBlock(CSha256 *p) -{ - UInt32 data32[16]; - unsigned i; - for (i = 0; i < 16; i++) - data32[i] = - ((UInt32)(p->buffer[i * 4 ]) << 24) + - ((UInt32)(p->buffer[i * 4 + 1]) << 16) + - ((UInt32)(p->buffer[i * 4 + 2]) << 8) + - ((UInt32)(p->buffer[i * 4 + 3])); - Sha256_Transform(p->state, data32); -} - -void Sha256_Update(CSha256 *p, const Byte *data, size_t size) -{ - UInt32 curBufferPos = (UInt32)p->count & 0x3F; - while (size > 0) - { - p->buffer[curBufferPos++] = *data++; - p->count++; - size--; - if (curBufferPos == 64) - { - curBufferPos = 0; - Sha256_WriteByteBlock(p); - } - } -} - -void Sha256_Final(CSha256 *p, Byte *digest) -{ - UInt64 lenInBits = (p->count << 3); - UInt32 curBufferPos = (UInt32)p->count & 0x3F; - unsigned i; - p->buffer[curBufferPos++] = 0x80; - while (curBufferPos != (64 - 8)) - { - curBufferPos &= 0x3F; - if (curBufferPos == 0) - Sha256_WriteByteBlock(p); - p->buffer[curBufferPos++] = 0; - } - for (i = 0; i < 8; i++) - { - p->buffer[curBufferPos++] = (Byte)(lenInBits >> 56); - lenInBits <<= 8; - } - Sha256_WriteByteBlock(p); - - for (i = 0; i < 8; i++) - { - *digest++ = (Byte)(p->state[i] >> 24); - *digest++ = (Byte)(p->state[i] >> 16); - *digest++ = (Byte)(p->state[i] >> 8); - *digest++ = (Byte)(p->state[i]); - } - Sha256_Init(p); -} |