/* * SHA-1 using SSE2 * Based on public domain code by Dean Gaudet * (http://arctic.org/~dean/crypto/sha1.html) * (C) 2009-2011 Jack Lloyd * * Botan is released under the Simplified BSD License (see license.txt) */ #include #include #include namespace Botan { namespace SHA1_SSE2_F { namespace { /* * First 16 bytes just need byte swapping. Preparing just means * adding in the round constants. */ #define prep00_15(P, W) \ do { \ W = _mm_shufflehi_epi16(W, _MM_SHUFFLE(2, 3, 0, 1)); \ W = _mm_shufflelo_epi16(W, _MM_SHUFFLE(2, 3, 0, 1)); \ W = _mm_or_si128(_mm_slli_epi16(W, 8), \ _mm_srli_epi16(W, 8)); \ P.u128 = _mm_add_epi32(W, K00_19); \ } while(0) /* For each multiple of 4, t, we want to calculate this: W[t+0] = rol(W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16], 1); W[t+1] = rol(W[t-2] ^ W[t-7] ^ W[t-13] ^ W[t-15], 1); W[t+2] = rol(W[t-1] ^ W[t-6] ^ W[t-12] ^ W[t-14], 1); W[t+3] = rol(W[t] ^ W[t-5] ^ W[t-11] ^ W[t-13], 1); we'll actually calculate this: W[t+0] = rol(W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16], 1); W[t+1] = rol(W[t-2] ^ W[t-7] ^ W[t-13] ^ W[t-15], 1); W[t+2] = rol(W[t-1] ^ W[t-6] ^ W[t-12] ^ W[t-14], 1); W[t+3] = rol( 0 ^ W[t-5] ^ W[t-11] ^ W[t-13], 1); W[t+3] ^= rol(W[t+0], 1); the parameters are: W0 = &W[t-16]; W1 = &W[t-12]; W2 = &W[t- 8]; W3 = &W[t- 4]; and on output: prepared = W0 + K W0 = W[t]..W[t+3] */ /* note that there is a step here where i want to do a rol by 1, which * normally would look like this: * * r1 = psrld r0,$31 * r0 = pslld r0,$1 * r0 = por r0,r1 * * but instead i do this: * * r1 = pcmpltd r0,zero * r0 = paddd r0,r0 * r0 = psub r0,r1 * * because pcmpltd and paddd are available in both MMX units on * efficeon, pentium-m, and opteron but shifts are available in * only one unit. */ #define prep(prep, XW0, XW1, XW2, XW3, K) \ do { \ __m128i r0, r1, r2, r3; \ \ /* load W[t-4] 16-byte aligned, and shift */ \ r3 = _mm_srli_si128((XW3), 4); \ r0 = (XW0); \ /* get high 64-bits of XW0 into low 64-bits */ \ r1 = _mm_shuffle_epi32((XW0), _MM_SHUFFLE(1,0,3,2)); \ /* load high 64-bits of r1 */ \ r1 = _mm_unpacklo_epi64(r1, (XW1)); \ r2 = (XW2); \ \ r0 = _mm_xor_si128(r1, r0); \ r2 = _mm_xor_si128(r3, r2); \ r0 = _mm_xor_si128(r2, r0); \ /* unrotated W[t]..W[t+2] in r0 ... still need W[t+3] */ \ \ r2 = _mm_slli_si128(r0, 12); \ r1 = _mm_cmplt_epi32(r0, _mm_setzero_si128()); \ r0 = _mm_add_epi32(r0, r0); /* shift left by 1 */ \ r0 = _mm_sub_epi32(r0, r1); /* r0 has W[t]..W[t+2] */ \ \ r3 = _mm_srli_epi32(r2, 30); \ r2 = _mm_slli_epi32(r2, 2); \ \ r0 = _mm_xor_si128(r0, r3); \ r0 = _mm_xor_si128(r0, r2); /* r0 now has W[t+3] */ \ \ (XW0) = r0; \ (prep).u128 = _mm_add_epi32(r0, K); \ } while(0) /* * SHA-160 F1 Function */ inline void F1(uint32_t A, uint32_t& B, uint32_t C, uint32_t D, uint32_t& E, uint32_t msg) { E += (D ^ (B & (C ^ D))) + msg + rotl<5>(A); B = rotl<30>(B); } /* * SHA-160 F2 Function */ inline void F2(uint32_t A, uint32_t& B, uint32_t C, uint32_t D, uint32_t& E, uint32_t msg) { E += (B ^ C ^ D) + msg + rotl<5>(A); B = rotl<30>(B); } /* * SHA-160 F3 Function */ inline void F3(uint32_t A, uint32_t& B, uint32_t C, uint32_t D, uint32_t& E, uint32_t msg) { E += ((B & C) | ((B | C) & D)) + msg + rotl<5>(A); B = rotl<30>(B); } /* * SHA-160 F4 Function */ inline void F4(uint32_t A, uint32_t& B, uint32_t C, uint32_t D, uint32_t& E, uint32_t msg) { E += (B ^ C ^ D) + msg + rotl<5>(A); B = rotl<30>(B); } } } /* * SHA-160 Compression Function using SSE for message expansion */ //static BOTAN_FUNC_ISA("sse2") void SHA_160::sse2_compress_n(secure_vector& digest, const uint8_t input[], size_t blocks) { using namespace SHA1_SSE2_F; const __m128i K00_19 = _mm_set1_epi32(0x5A827999); const __m128i K20_39 = _mm_set1_epi32(0x6ED9EBA1); const __m128i K40_59 = _mm_set1_epi32(0x8F1BBCDC); const __m128i K60_79 = _mm_set1_epi32(0xCA62C1D6); uint32_t A = digest[0], B = digest[1], C = digest[2], D = digest[3], E = digest[4]; const __m128i* input_mm = reinterpret_cast(input); for(size_t i = 0; i != blocks; ++i) { union v4si { uint32_t u32[4]; __m128i u128; }; v4si P0, P1, P2, P3; __m128i W0 = _mm_loadu_si128(&input_mm[0]); prep00_15(P0, W0); __m128i W1 = _mm_loadu_si128(&input_mm[1]); prep00_15(P1, W1); __m128i W2 = _mm_loadu_si128(&input_mm[2]); prep00_15(P2, W2); __m128i W3 = _mm_loadu_si128(&input_mm[3]); prep00_15(P3, W3); /* Using SSE4; slower on Core2 and Nehalem #define GET_P_32(P, i) _mm_extract_epi32(P.u128, i) Much slower on all tested platforms #define GET_P_32(P,i) _mm_cvtsi128_si32(_mm_srli_si128(P.u128, i*4)) */ #define GET_P_32(P, i) P.u32[i] F1(A, B, C, D, E, GET_P_32(P0, 0)); F1(E, A, B, C, D, GET_P_32(P0, 1)); F1(D, E, A, B, C, GET_P_32(P0, 2)); F1(C, D, E, A, B, GET_P_32(P0, 3)); prep(P0, W0, W1, W2, W3, K00_19); F1(B, C, D, E, A, GET_P_32(P1, 0)); F1(A, B, C, D, E, GET_P_32(P1, 1)); F1(E, A, B, C, D, GET_P_32(P1, 2)); F1(D, E, A, B, C, GET_P_32(P1, 3)); prep(P1, W1, W2, W3, W0, K20_39); F1(C, D, E, A, B, GET_P_32(P2, 0)); F1(B, C, D, E, A, GET_P_32(P2, 1)); F1(A, B, C, D, E, GET_P_32(P2, 2)); F1(E, A, B, C, D, GET_P_32(P2, 3)); prep(P2, W2, W3, W0, W1, K20_39); F1(D, E, A, B, C, GET_P_32(P3, 0)); F1(C, D, E, A, B, GET_P_32(P3, 1)); F1(B, C, D, E, A, GET_P_32(P3, 2)); F1(A, B, C, D, E, GET_P_32(P3, 3)); prep(P3, W3, W0, W1, W2, K20_39); F1(E, A, B, C, D, GET_P_32(P0, 0)); F1(D, E, A, B, C, GET_P_32(P0, 1)); F1(C, D, E, A, B, GET_P_32(P0, 2)); F1(B, C, D, E, A, GET_P_32(P0, 3)); prep(P0, W0, W1, W2, W3, K20_39); F2(A, B, C, D, E, GET_P_32(P1, 0)); F2(E, A, B, C, D, GET_P_32(P1, 1)); F2(D, E, A, B, C, GET_P_32(P1, 2)); F2(C, D, E, A, B, GET_P_32(P1, 3)); prep(P1, W1, W2, W3, W0, K20_39); F2(B, C, D, E, A, GET_P_32(P2, 0)); F2(A, B, C, D, E, GET_P_32(P2, 1)); F2(E, A, B, C, D, GET_P_32(P2, 2)); F2(D, E, A, B, C, GET_P_32(P2, 3)); prep(P2, W2, W3, W0, W1, K40_59); F2(C, D, E, A, B, GET_P_32(P3, 0)); F2(B, C, D, E, A, GET_P_32(P3, 1)); F2(A, B, C, D, E, GET_P_32(P3, 2)); F2(E, A, B, C, D, GET_P_32(P3, 3)); prep(P3, W3, W0, W1, W2, K40_59); F2(D, E, A, B, C, GET_P_32(P0, 0)); F2(C, D, E, A, B, GET_P_32(P0, 1)); F2(B, C, D, E, A, GET_P_32(P0, 2)); F2(A, B, C, D, E, GET_P_32(P0, 3)); prep(P0, W0, W1, W2, W3, K40_59); F2(E, A, B, C, D, GET_P_32(P1, 0)); F2(D, E, A, B, C, GET_P_32(P1, 1)); F2(C, D, E, A, B, GET_P_32(P1, 2)); F2(B, C, D, E, A, GET_P_32(P1, 3)); prep(P1, W1, W2, W3, W0, K40_59); F3(A, B, C, D, E, GET_P_32(P2, 0)); F3(E, A, B, C, D, GET_P_32(P2, 1)); F3(D, E, A, B, C, GET_P_32(P2, 2)); F3(C, D, E, A, B, GET_P_32(P2, 3)); prep(P2, W2, W3, W0, W1, K40_59); F3(B, C, D, E, A, GET_P_32(P3, 0)); F3(A, B, C, D, E, GET_P_32(P3, 1)); F3(E, A, B, C, D, GET_P_32(P3, 2)); F3(D, E, A, B, C, GET_P_32(P3, 3)); prep(P3, W3, W0, W1, W2, K60_79); F3(C, D, E, A, B, GET_P_32(P0, 0)); F3(B, C, D, E, A, GET_P_32(P0, 1)); F3(A, B, C, D, E, GET_P_32(P0, 2)); F3(E, A, B, C, D, GET_P_32(P0, 3)); prep(P0, W0, W1, W2, W3, K60_79); F3(D, E, A, B, C, GET_P_32(P1, 0)); F3(C, D, E, A, B, GET_P_32(P1, 1)); F3(B, C, D, E, A, GET_P_32(P1, 2)); F3(A, B, C, D, E, GET_P_32(P1, 3)); prep(P1, W1, W2, W3, W0, K60_79); F3(E, A, B, C, D, GET_P_32(P2, 0)); F3(D, E, A, B, C, GET_P_32(P2, 1)); F3(C, D, E, A, B, GET_P_32(P2, 2)); F3(B, C, D, E, A, GET_P_32(P2, 3)); prep(P2, W2, W3, W0, W1, K60_79); F4(A, B, C, D, E, GET_P_32(P3, 0)); F4(E, A, B, C, D, GET_P_32(P3, 1)); F4(D, E, A, B, C, GET_P_32(P3, 2)); F4(C, D, E, A, B, GET_P_32(P3, 3)); prep(P3, W3, W0, W1, W2, K60_79); F4(B, C, D, E, A, GET_P_32(P0, 0)); F4(A, B, C, D, E, GET_P_32(P0, 1)); F4(E, A, B, C, D, GET_P_32(P0, 2)); F4(D, E, A, B, C, GET_P_32(P0, 3)); F4(C, D, E, A, B, GET_P_32(P1, 0)); F4(B, C, D, E, A, GET_P_32(P1, 1)); F4(A, B, C, D, E, GET_P_32(P1, 2)); F4(E, A, B, C, D, GET_P_32(P1, 3)); F4(D, E, A, B, C, GET_P_32(P2, 0)); F4(C, D, E, A, B, GET_P_32(P2, 1)); F4(B, C, D, E, A, GET_P_32(P2, 2)); F4(A, B, C, D, E, GET_P_32(P2, 3)); F4(E, A, B, C, D, GET_P_32(P3, 0)); F4(D, E, A, B, C, GET_P_32(P3, 1)); F4(C, D, E, A, B, GET_P_32(P3, 2)); F4(B, C, D, E, A, GET_P_32(P3, 3)); A = (digest[0] += A); B = (digest[1] += B); C = (digest[2] += C); D = (digest[3] += D); E = (digest[4] += E); input_mm += (64 / 16); } #undef GET_P_32 } #undef prep00_15 #undef prep }