diff options
Diffstat (limited to 'src/lib/lib7z/Sha256.c')
-rw-r--r-- | src/lib/lib7z/Sha256.c | 254 |
1 files changed, 127 insertions, 127 deletions
diff --git a/src/lib/lib7z/Sha256.c b/src/lib/lib7z/Sha256.c index 8b824744ced..fd330df36cf 100644 --- a/src/lib/lib7z/Sha256.c +++ b/src/lib/lib7z/Sha256.c @@ -11,15 +11,15 @@ This code is based on public domain code from Wei Dai's Crypto++ library. */ 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; + 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)) @@ -46,22 +46,22 @@ void Sha256_Init(CSha256 *p) #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) + 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) + 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)) + d(i) += h(i); h(i) += S0(a(i)) + Maj(a(i), b(i), c(i)) #ifdef _SHA256_UNROLL @@ -72,71 +72,71 @@ void Sha256_Init(CSha256 *p) #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 + 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)); */ + 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 @@ -146,59 +146,59 @@ static void Sha256_Transform(UInt32 *state, const UInt32 *data) 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); + 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); - } - } + 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); + 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); } |