/* * SHA-{224,256} * (C) 1999-2010 Jack Lloyd * 2007 FlexSecure GmbH * * Botan is released under the Simplified BSD License (see license.txt) */ #include namespace Botan { namespace { namespace SHA2_32 { /* * SHA-256 Rho Function */ inline u32bit rho(u32bit X, u32bit rot1, u32bit rot2, u32bit rot3) { return (rotate_right(X, rot1) ^ rotate_right(X, rot2) ^ rotate_right(X, rot3)); } /* * SHA-256 Sigma Function */ inline u32bit sigma(u32bit X, u32bit rot1, u32bit rot2, u32bit shift) { return (rotate_right(X, rot1) ^ rotate_right(X, rot2) ^ (X >> shift)); } /* * SHA-256 F1 Function * * Use a macro as many compilers won't inline a function this big, * even though it is much faster if inlined. */ #define SHA2_32_F(A, B, C, D, E, F, G, H, M1, M2, M3, M4, magic) \ do { \ H += magic + rho(E, 6, 11, 25) + ((E & F) ^ (~E & G)) + M1; \ D += H; \ H += rho(A, 2, 13, 22) + ((A & B) | ((A | B) & C)); \ M1 += sigma(M2, 17, 19, 10) + M3 + sigma(M4, 7, 18, 3); \ } while(0); /* * SHA-224 / SHA-256 compression function */ void compress(secure_vector& digest, const byte input[], size_t blocks) { u32bit A = digest[0], B = digest[1], C = digest[2], D = digest[3], E = digest[4], F = digest[5], G = digest[6], H = digest[7]; for(size_t i = 0; i != blocks; ++i) { u32bit W00 = load_be(input, 0); u32bit W01 = load_be(input, 1); u32bit W02 = load_be(input, 2); u32bit W03 = load_be(input, 3); u32bit W04 = load_be(input, 4); u32bit W05 = load_be(input, 5); u32bit W06 = load_be(input, 6); u32bit W07 = load_be(input, 7); u32bit W08 = load_be(input, 8); u32bit W09 = load_be(input, 9); u32bit W10 = load_be(input, 10); u32bit W11 = load_be(input, 11); u32bit W12 = load_be(input, 12); u32bit W13 = load_be(input, 13); u32bit W14 = load_be(input, 14); u32bit W15 = load_be(input, 15); SHA2_32_F(A, B, C, D, E, F, G, H, W00, W14, W09, W01, 0x428A2F98); SHA2_32_F(H, A, B, C, D, E, F, G, W01, W15, W10, W02, 0x71374491); SHA2_32_F(G, H, A, B, C, D, E, F, W02, W00, W11, W03, 0xB5C0FBCF); SHA2_32_F(F, G, H, A, B, C, D, E, W03, W01, W12, W04, 0xE9B5DBA5); SHA2_32_F(E, F, G, H, A, B, C, D, W04, W02, W13, W05, 0x3956C25B); SHA2_32_F(D, E, F, G, H, A, B, C, W05, W03, W14, W06, 0x59F111F1); SHA2_32_F(C, D, E, F, G, H, A, B, W06, W04, W15, W07, 0x923F82A4); SHA2_32_F(B, C, D, E, F, G, H, A, W07, W05, W00, W08, 0xAB1C5ED5); SHA2_32_F(A, B, C, D, E, F, G, H, W08, W06, W01, W09, 0xD807AA98); SHA2_32_F(H, A, B, C, D, E, F, G, W09, W07, W02, W10, 0x12835B01); SHA2_32_F(G, H, A, B, C, D, E, F, W10, W08, W03, W11, 0x243185BE); SHA2_32_F(F, G, H, A, B, C, D, E, W11, W09, W04, W12, 0x550C7DC3); SHA2_32_F(E, F, G, H, A, B, C, D, W12, W10, W05, W13, 0x72BE5D74); SHA2_32_F(D, E, F, G, H, A, B, C, W13, W11, W06, W14, 0x80DEB1FE); SHA2_32_F(C, D, E, F, G, H, A, B, W14, W12, W07, W15, 0x9BDC06A7); SHA2_32_F(B, C, D, E, F, G, H, A, W15, W13, W08, W00, 0xC19BF174); SHA2_32_F(A, B, C, D, E, F, G, H, W00, W14, W09, W01, 0xE49B69C1); SHA2_32_F(H, A, B, C, D, E, F, G, W01, W15, W10, W02, 0xEFBE4786); SHA2_32_F(G, H, A, B, C, D, E, F, W02, W00, W11, W03, 0x0FC19DC6); SHA2_32_F(F, G, H, A, B, C, D, E, W03, W01, W12, W04, 0x240CA1CC); SHA2_32_F(E, F, G, H, A, B, C, D, W04, W02, W13, W05, 0x2DE92C6F); SHA2_32_F(D, E, F, G, H, A, B, C, W05, W03, W14, W06, 0x4A7484AA); SHA2_32_F(C, D, E, F, G, H, A, B, W06, W04, W15, W07, 0x5CB0A9DC); SHA2_32_F(B, C, D, E, F, G, H, A, W07, W05, W00, W08, 0x76F988DA); SHA2_32_F(A, B, C, D, E, F, G, H, W08, W06, W01, W09, 0x983E5152); SHA2_32_F(H, A, B, C, D, E, F, G, W09, W07, W02, W10, 0xA831C66D); SHA2_32_F(G, H, A, B, C, D, E, F, W10, W08, W03, W11, 0xB00327C8); SHA2_32_F(F, G, H, A, B, C, D, E, W11, W09, W04, W12, 0xBF597FC7); SHA2_32_F(E, F, G, H, A, B, C, D, W12, W10, W05, W13, 0xC6E00BF3); SHA2_32_F(D, E, F, G, H, A, B, C, W13, W11, W06, W14, 0xD5A79147); SHA2_32_F(C, D, E, F, G, H, A, B, W14, W12, W07, W15, 0x06CA6351); SHA2_32_F(B, C, D, E, F, G, H, A, W15, W13, W08, W00, 0x14292967); SHA2_32_F(A, B, C, D, E, F, G, H, W00, W14, W09, W01, 0x27B70A85); SHA2_32_F(H, A, B, C, D, E, F, G, W01, W15, W10, W02, 0x2E1B2138); SHA2_32_F(G, H, A, B, C, D, E, F, W02, W00, W11, W03, 0x4D2C6DFC); SHA2_32_F(F, G, H, A, B, C, D, E, W03, W01, W12, W04, 0x53380D13); SHA2_32_F(E, F, G, H, A, B, C, D, W04, W02, W13, W05, 0x650A7354); SHA2_32_F(D, E, F, G, H, A, B, C, W05, W03, W14, W06, 0x766A0ABB); SHA2_32_F(C, D, E, F, G, H, A, B, W06, W04, W15, W07, 0x81C2C92E); SHA2_32_F(B, C, D, E, F, G, H, A, W07, W05, W00, W08, 0x92722C85); SHA2_32_F(A, B, C, D, E, F, G, H, W08, W06, W01, W09, 0xA2BFE8A1); SHA2_32_F(H, A, B, C, D, E, F, G, W09, W07, W02, W10, 0xA81A664B); SHA2_32_F(G, H, A, B, C, D, E, F, W10, W08, W03, W11, 0xC24B8B70); SHA2_32_F(F, G, H, A, B, C, D, E, W11, W09, W04, W12, 0xC76C51A3); SHA2_32_F(E, F, G, H, A, B, C, D, W12, W10, W05, W13, 0xD192E819); SHA2_32_F(D, E, F, G, H, A, B, C, W13, W11, W06, W14, 0xD6990624); SHA2_32_F(C, D, E, F, G, H, A, B, W14, W12, W07, W15, 0xF40E3585); SHA2_32_F(B, C, D, E, F, G, H, A, W15, W13, W08, W00, 0x106AA070); SHA2_32_F(A, B, C, D, E, F, G, H, W00, W14, W09, W01, 0x19A4C116); SHA2_32_F(H, A, B, C, D, E, F, G, W01, W15, W10, W02, 0x1E376C08); SHA2_32_F(G, H, A, B, C, D, E, F, W02, W00, W11, W03, 0x2748774C); SHA2_32_F(F, G, H, A, B, C, D, E, W03, W01, W12, W04, 0x34B0BCB5); SHA2_32_F(E, F, G, H, A, B, C, D, W04, W02, W13, W05, 0x391C0CB3); SHA2_32_F(D, E, F, G, H, A, B, C, W05, W03, W14, W06, 0x4ED8AA4A); SHA2_32_F(C, D, E, F, G, H, A, B, W06, W04, W15, W07, 0x5B9CCA4F); SHA2_32_F(B, C, D, E, F, G, H, A, W07, W05, W00, W08, 0x682E6FF3); SHA2_32_F(A, B, C, D, E, F, G, H, W08, W06, W01, W09, 0x748F82EE); SHA2_32_F(H, A, B, C, D, E, F, G, W09, W07, W02, W10, 0x78A5636F); SHA2_32_F(G, H, A, B, C, D, E, F, W10, W08, W03, W11, 0x84C87814); SHA2_32_F(F, G, H, A, B, C, D, E, W11, W09, W04, W12, 0x8CC70208); SHA2_32_F(E, F, G, H, A, B, C, D, W12, W10, W05, W13, 0x90BEFFFA); SHA2_32_F(D, E, F, G, H, A, B, C, W13, W11, W06, W14, 0xA4506CEB); SHA2_32_F(C, D, E, F, G, H, A, B, W14, W12, W07, W15, 0xBEF9A3F7); SHA2_32_F(B, C, D, E, F, G, H, A, W15, W13, W08, W00, 0xC67178F2); A = (digest[0] += A); B = (digest[1] += B); C = (digest[2] += C); D = (digest[3] += D); E = (digest[4] += E); F = (digest[5] += F); G = (digest[6] += G); H = (digest[7] += H); input += 64; } } } } /* * SHA-224 compression function */ void SHA_224::compress_n(const byte input[], size_t blocks) { SHA2_32::compress(m_digest, input, blocks); } /* * Copy out the digest */ void SHA_224::copy_out(byte output[]) { copy_out_vec_be(output, output_length(), m_digest); } /* * Clear memory of sensitive data */ void SHA_224::clear() { MDx_HashFunction::clear(); m_digest[0] = 0xC1059ED8; m_digest[1] = 0x367CD507; m_digest[2] = 0x3070DD17; m_digest[3] = 0xF70E5939; m_digest[4] = 0xFFC00B31; m_digest[5] = 0x68581511; m_digest[6] = 0x64F98FA7; m_digest[7] = 0xBEFA4FA4; } /* * SHA-256 compression function */ void SHA_256::compress_n(const byte input[], size_t blocks) { SHA2_32::compress(m_digest, input, blocks); } /* * Copy out the digest */ void SHA_256::copy_out(byte output[]) { copy_out_vec_be(output, output_length(), m_digest); } /* * Clear memory of sensitive data */ void SHA_256::clear() { MDx_HashFunction::clear(); m_digest[0] = 0x6A09E667; m_digest[1] = 0xBB67AE85; m_digest[2] = 0x3C6EF372; m_digest[3] = 0xA54FF53A; m_digest[4] = 0x510E527F; m_digest[5] = 0x9B05688C; m_digest[6] = 0x1F83D9AB; m_digest[7] = 0x5BE0CD19; } }