#include #include #include #include "sha256avx.h" // Transpose 8 vectors containing 32-bit values void PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_transpose(u256 s[8]) { u256 tmp0[8]; u256 tmp1[8]; tmp0[0] = _mm256_unpacklo_epi32(s[0], s[1]); tmp0[1] = _mm256_unpackhi_epi32(s[0], s[1]); tmp0[2] = _mm256_unpacklo_epi32(s[2], s[3]); tmp0[3] = _mm256_unpackhi_epi32(s[2], s[3]); tmp0[4] = _mm256_unpacklo_epi32(s[4], s[5]); tmp0[5] = _mm256_unpackhi_epi32(s[4], s[5]); tmp0[6] = _mm256_unpacklo_epi32(s[6], s[7]); tmp0[7] = _mm256_unpackhi_epi32(s[6], s[7]); tmp1[0] = _mm256_unpacklo_epi64(tmp0[0], tmp0[2]); tmp1[1] = _mm256_unpackhi_epi64(tmp0[0], tmp0[2]); tmp1[2] = _mm256_unpacklo_epi64(tmp0[1], tmp0[3]); tmp1[3] = _mm256_unpackhi_epi64(tmp0[1], tmp0[3]); tmp1[4] = _mm256_unpacklo_epi64(tmp0[4], tmp0[6]); tmp1[5] = _mm256_unpackhi_epi64(tmp0[4], tmp0[6]); tmp1[6] = _mm256_unpacklo_epi64(tmp0[5], tmp0[7]); tmp1[7] = _mm256_unpackhi_epi64(tmp0[5], tmp0[7]); s[0] = _mm256_permute2x128_si256(tmp1[0], tmp1[4], 0x20); s[1] = _mm256_permute2x128_si256(tmp1[1], tmp1[5], 0x20); s[2] = _mm256_permute2x128_si256(tmp1[2], tmp1[6], 0x20); s[3] = _mm256_permute2x128_si256(tmp1[3], tmp1[7], 0x20); s[4] = _mm256_permute2x128_si256(tmp1[0], tmp1[4], 0x31); s[5] = _mm256_permute2x128_si256(tmp1[1], tmp1[5], 0x31); s[6] = _mm256_permute2x128_si256(tmp1[2], tmp1[6], 0x31); s[7] = _mm256_permute2x128_si256(tmp1[3], tmp1[7], 0x31); } void PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_sha256_clone_statex8(sha256ctxx8 *outctx, const sha256ctxx8 *inctx) { memcpy(outctx, inctx, sizeof(sha256ctxx8)); } void PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_sha256_init8x(sha256ctxx8 *ctx) { ctx->s[0] = _mm256_set_epi32((int)0x6a09e667, (int)0x6a09e667, (int)0x6a09e667, (int)0x6a09e667, (int)0x6a09e667, (int)0x6a09e667, (int)0x6a09e667, (int)0x6a09e667); ctx->s[1] = _mm256_set_epi32((int)0xbb67ae85, (int)0xbb67ae85, (int)0xbb67ae85, (int)0xbb67ae85, (int)0xbb67ae85, (int)0xbb67ae85, (int)0xbb67ae85, (int)0xbb67ae85); ctx->s[2] = _mm256_set_epi32((int)0x3c6ef372, (int)0x3c6ef372, (int)0x3c6ef372, (int)0x3c6ef372, (int)0x3c6ef372, (int)0x3c6ef372, (int)0x3c6ef372, (int)0x3c6ef372); ctx->s[3] = _mm256_set_epi32((int)0xa54ff53a, (int)0xa54ff53a, (int)0xa54ff53a, (int)0xa54ff53a, (int)0xa54ff53a, (int)0xa54ff53a, (int)0xa54ff53a, (int)0xa54ff53a); ctx->s[4] = _mm256_set_epi32((int)0x510e527f, (int)0x510e527f, (int)0x510e527f, (int)0x510e527f, (int)0x510e527f, (int)0x510e527f, (int)0x510e527f, (int)0x510e527f); ctx->s[5] = _mm256_set_epi32((int)0x9b05688c, (int)0x9b05688c, (int)0x9b05688c, (int)0x9b05688c, (int)0x9b05688c, (int)0x9b05688c, (int)0x9b05688c, (int)0x9b05688c); ctx->s[6] = _mm256_set_epi32((int)0x1f83d9ab, (int)0x1f83d9ab, (int)0x1f83d9ab, (int)0x1f83d9ab, (int)0x1f83d9ab, (int)0x1f83d9ab, (int)0x1f83d9ab, (int)0x1f83d9ab); ctx->s[7] = _mm256_set_epi32((int)0x5be0cd19, (int)0x5be0cd19, (int)0x5be0cd19, (int)0x5be0cd19, (int)0x5be0cd19, (int)0x5be0cd19, (int)0x5be0cd19, (int)0x5be0cd19); ctx->datalen = 0; ctx->msglen = 0; } void PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_sha256_update8x(sha256ctxx8 *ctx, const unsigned char *d0, const unsigned char *d1, const unsigned char *d2, const unsigned char *d3, const unsigned char *d4, const unsigned char *d5, const unsigned char *d6, const unsigned char *d7, unsigned long long len) { unsigned long long i = 0; while (i < len) { unsigned long long bytes_to_copy = (len - i) > 64 ? 64 : (len - i); memcpy(&ctx->msgblocks[64 * 0], d0 + i, bytes_to_copy); memcpy(&ctx->msgblocks[64 * 1], d1 + i, bytes_to_copy); memcpy(&ctx->msgblocks[64 * 2], d2 + i, bytes_to_copy); memcpy(&ctx->msgblocks[64 * 3], d3 + i, bytes_to_copy); memcpy(&ctx->msgblocks[64 * 4], d4 + i, bytes_to_copy); memcpy(&ctx->msgblocks[64 * 5], d5 + i, bytes_to_copy); memcpy(&ctx->msgblocks[64 * 6], d6 + i, bytes_to_copy); memcpy(&ctx->msgblocks[64 * 7], d7 + i, bytes_to_copy); ctx->datalen += (unsigned int)bytes_to_copy; i += bytes_to_copy; if (ctx->datalen == 64) { PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_sha256_transform8x(ctx, ctx->msgblocks); ctx->msglen += 512; ctx->datalen = 0; } } } void PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_sha256_final8x(sha256ctxx8 *ctx, unsigned char *out0, unsigned char *out1, unsigned char *out2, unsigned char *out3, unsigned char *out4, unsigned char *out5, unsigned char *out6, unsigned char *out7) { unsigned int i, curlen; // Padding if (ctx->datalen < 56) { for (i = 0; i < 8; ++i) { curlen = ctx->datalen; ctx->msgblocks[64 * i + curlen++] = 0x80; while (curlen < 64) { ctx->msgblocks[64 * i + curlen++] = 0x00; } } } else { for (i = 0; i < 8; ++i) { curlen = ctx->datalen; ctx->msgblocks[64 * i + curlen++] = 0x80; while (curlen < 64) { ctx->msgblocks[64 * i + curlen++] = 0x00; } } PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_sha256_transform8x(ctx, ctx->msgblocks); memset(ctx->msgblocks, 0, 8 * 64); } // Add length of the message to each block ctx->msglen += ctx->datalen * 8; for (i = 0; i < 8; i++) { ctx->msgblocks[64 * i + 63] = (unsigned char)ctx->msglen; ctx->msgblocks[64 * i + 62] = (unsigned char)(ctx->msglen >> 8); ctx->msgblocks[64 * i + 61] = (unsigned char)(ctx->msglen >> 16); ctx->msgblocks[64 * i + 60] = (unsigned char)(ctx->msglen >> 24); ctx->msgblocks[64 * i + 59] = (unsigned char)(ctx->msglen >> 32); ctx->msgblocks[64 * i + 58] = (unsigned char)(ctx->msglen >> 40); ctx->msgblocks[64 * i + 57] = (unsigned char)(ctx->msglen >> 48); ctx->msgblocks[64 * i + 56] = (unsigned char)(ctx->msglen >> 56); } PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_sha256_transform8x(ctx, ctx->msgblocks); // Compute final hash output PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_transpose(ctx->s); // Store Hash value STORE(out0, BYTESWAP(ctx->s[0])); STORE(out1, BYTESWAP(ctx->s[1])); STORE(out2, BYTESWAP(ctx->s[2])); STORE(out3, BYTESWAP(ctx->s[3])); STORE(out4, BYTESWAP(ctx->s[4])); STORE(out5, BYTESWAP(ctx->s[5])); STORE(out6, BYTESWAP(ctx->s[6])); STORE(out7, BYTESWAP(ctx->s[7])); } void PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_sha256_transform8x(sha256ctxx8 *ctx, const unsigned char *data) { u256 s[8], w[64], T0, T1; int i; // Load words and transform data correctly for (i = 0; i < 8; i++) { w[i] = BYTESWAP(LOAD(data + 64 * i)); w[i + 8] = BYTESWAP(LOAD(data + 32 + 64 * i)); } PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_transpose(w); PQCLEAN_SPHINCSSHA256256SSIMPLE_AVX2_transpose(w + 8); // Initial State s[0] = ctx->s[0]; s[1] = ctx->s[1]; s[2] = ctx->s[2]; s[3] = ctx->s[3]; s[4] = ctx->s[4]; s[5] = ctx->s[5]; s[6] = ctx->s[6]; s[7] = ctx->s[7]; SHA256ROUND_AVX(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], 0, w[0]); SHA256ROUND_AVX(s[7], s[0], s[1], s[2], s[3], s[4], s[5], s[6], 1, w[1]); SHA256ROUND_AVX(s[6], s[7], s[0], s[1], s[2], s[3], s[4], s[5], 2, w[2]); SHA256ROUND_AVX(s[5], s[6], s[7], s[0], s[1], s[2], s[3], s[4], 3, w[3]); SHA256ROUND_AVX(s[4], s[5], s[6], s[7], s[0], s[1], s[2], s[3], 4, w[4]); SHA256ROUND_AVX(s[3], s[4], s[5], s[6], s[7], s[0], s[1], s[2], 5, w[5]); SHA256ROUND_AVX(s[2], s[3], s[4], s[5], s[6], s[7], s[0], s[1], 6, w[6]); SHA256ROUND_AVX(s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[0], 7, w[7]); SHA256ROUND_AVX(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], 8, w[8]); SHA256ROUND_AVX(s[7], s[0], s[1], s[2], s[3], s[4], s[5], s[6], 9, w[9]); SHA256ROUND_AVX(s[6], s[7], s[0], s[1], s[2], s[3], s[4], s[5], 10, w[10]); SHA256ROUND_AVX(s[5], s[6], s[7], s[0], s[1], s[2], s[3], s[4], 11, w[11]); SHA256ROUND_AVX(s[4], s[5], s[6], s[7], s[0], s[1], s[2], s[3], 12, w[12]); SHA256ROUND_AVX(s[3], s[4], s[5], s[6], s[7], s[0], s[1], s[2], 13, w[13]); SHA256ROUND_AVX(s[2], s[3], s[4], s[5], s[6], s[7], s[0], s[1], 14, w[14]); SHA256ROUND_AVX(s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[0], 15, w[15]); w[16] = ADD4_32(WSIGMA1_AVX(w[14]), w[0], w[9], WSIGMA0_AVX(w[1])); SHA256ROUND_AVX(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], 16, w[16]); w[17] = ADD4_32(WSIGMA1_AVX(w[15]), w[1], w[10], WSIGMA0_AVX(w[2])); SHA256ROUND_AVX(s[7], s[0], s[1], s[2], s[3], s[4], s[5], s[6], 17, w[17]); w[18] = ADD4_32(WSIGMA1_AVX(w[16]), w[2], w[11], WSIGMA0_AVX(w[3])); SHA256ROUND_AVX(s[6], s[7], s[0], s[1], s[2], s[3], s[4], s[5], 18, w[18]); w[19] = ADD4_32(WSIGMA1_AVX(w[17]), w[3], w[12], WSIGMA0_AVX(w[4])); SHA256ROUND_AVX(s[5], s[6], s[7], s[0], s[1], s[2], s[3], s[4], 19, w[19]); w[20] = ADD4_32(WSIGMA1_AVX(w[18]), w[4], w[13], WSIGMA0_AVX(w[5])); SHA256ROUND_AVX(s[4], s[5], s[6], s[7], s[0], s[1], s[2], s[3], 20, w[20]); w[21] = ADD4_32(WSIGMA1_AVX(w[19]), w[5], w[14], WSIGMA0_AVX(w[6])); SHA256ROUND_AVX(s[3], s[4], s[5], s[6], s[7], s[0], s[1], s[2], 21, w[21]); w[22] = ADD4_32(WSIGMA1_AVX(w[20]), w[6], w[15], WSIGMA0_AVX(w[7])); SHA256ROUND_AVX(s[2], s[3], s[4], s[5], s[6], s[7], s[0], s[1], 22, w[22]); w[23] = ADD4_32(WSIGMA1_AVX(w[21]), w[7], w[16], WSIGMA0_AVX(w[8])); SHA256ROUND_AVX(s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[0], 23, w[23]); w[24] = ADD4_32(WSIGMA1_AVX(w[22]), w[8], w[17], WSIGMA0_AVX(w[9])); SHA256ROUND_AVX(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], 24, w[24]); w[25] = ADD4_32(WSIGMA1_AVX(w[23]), w[9], w[18], WSIGMA0_AVX(w[10])); SHA256ROUND_AVX(s[7], s[0], s[1], s[2], s[3], s[4], s[5], s[6], 25, w[25]); w[26] = ADD4_32(WSIGMA1_AVX(w[24]), w[10], w[19], WSIGMA0_AVX(w[11])); SHA256ROUND_AVX(s[6], s[7], s[0], s[1], s[2], s[3], s[4], s[5], 26, w[26]); w[27] = ADD4_32(WSIGMA1_AVX(w[25]), w[11], w[20], WSIGMA0_AVX(w[12])); SHA256ROUND_AVX(s[5], s[6], s[7], s[0], s[1], s[2], s[3], s[4], 27, w[27]); w[28] = ADD4_32(WSIGMA1_AVX(w[26]), w[12], w[21], WSIGMA0_AVX(w[13])); SHA256ROUND_AVX(s[4], s[5], s[6], s[7], s[0], s[1], s[2], s[3], 28, w[28]); w[29] = ADD4_32(WSIGMA1_AVX(w[27]), w[13], w[22], WSIGMA0_AVX(w[14])); SHA256ROUND_AVX(s[3], s[4], s[5], s[6], s[7], s[0], s[1], s[2], 29, w[29]); w[30] = ADD4_32(WSIGMA1_AVX(w[28]), w[14], w[23], WSIGMA0_AVX(w[15])); SHA256ROUND_AVX(s[2], s[3], s[4], s[5], s[6], s[7], s[0], s[1], 30, w[30]); w[31] = ADD4_32(WSIGMA1_AVX(w[29]), w[15], w[24], WSIGMA0_AVX(w[16])); SHA256ROUND_AVX(s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[0], 31, w[31]); w[32] = ADD4_32(WSIGMA1_AVX(w[30]), w[16], w[25], WSIGMA0_AVX(w[17])); SHA256ROUND_AVX(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], 32, w[32]); w[33] = ADD4_32(WSIGMA1_AVX(w[31]), w[17], w[26], WSIGMA0_AVX(w[18])); SHA256ROUND_AVX(s[7], s[0], s[1], s[2], s[3], s[4], s[5], s[6], 33, w[33]); w[34] = ADD4_32(WSIGMA1_AVX(w[32]), w[18], w[27], WSIGMA0_AVX(w[19])); SHA256ROUND_AVX(s[6], s[7], s[0], s[1], s[2], s[3], s[4], s[5], 34, w[34]); w[35] = ADD4_32(WSIGMA1_AVX(w[33]), w[19], w[28], WSIGMA0_AVX(w[20])); SHA256ROUND_AVX(s[5], s[6], s[7], s[0], s[1], s[2], s[3], s[4], 35, w[35]); w[36] = ADD4_32(WSIGMA1_AVX(w[34]), w[20], w[29], WSIGMA0_AVX(w[21])); SHA256ROUND_AVX(s[4], s[5], s[6], s[7], s[0], s[1], s[2], s[3], 36, w[36]); w[37] = ADD4_32(WSIGMA1_AVX(w[35]), w[21], w[30], WSIGMA0_AVX(w[22])); SHA256ROUND_AVX(s[3], s[4], s[5], s[6], s[7], s[0], s[1], s[2], 37, w[37]); w[38] = ADD4_32(WSIGMA1_AVX(w[36]), w[22], w[31], WSIGMA0_AVX(w[23])); SHA256ROUND_AVX(s[2], s[3], s[4], s[5], s[6], s[7], s[0], s[1], 38, w[38]); w[39] = ADD4_32(WSIGMA1_AVX(w[37]), w[23], w[32], WSIGMA0_AVX(w[24])); SHA256ROUND_AVX(s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[0], 39, w[39]); w[40] = ADD4_32(WSIGMA1_AVX(w[38]), w[24], w[33], WSIGMA0_AVX(w[25])); SHA256ROUND_AVX(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], 40, w[40]); w[41] = ADD4_32(WSIGMA1_AVX(w[39]), w[25], w[34], WSIGMA0_AVX(w[26])); SHA256ROUND_AVX(s[7], s[0], s[1], s[2], s[3], s[4], s[5], s[6], 41, w[41]); w[42] = ADD4_32(WSIGMA1_AVX(w[40]), w[26], w[35], WSIGMA0_AVX(w[27])); SHA256ROUND_AVX(s[6], s[7], s[0], s[1], s[2], s[3], s[4], s[5], 42, w[42]); w[43] = ADD4_32(WSIGMA1_AVX(w[41]), w[27], w[36], WSIGMA0_AVX(w[28])); SHA256ROUND_AVX(s[5], s[6], s[7], s[0], s[1], s[2], s[3], s[4], 43, w[43]); w[44] = ADD4_32(WSIGMA1_AVX(w[42]), w[28], w[37], WSIGMA0_AVX(w[29])); SHA256ROUND_AVX(s[4], s[5], s[6], s[7], s[0], s[1], s[2], s[3], 44, w[44]); w[45] = ADD4_32(WSIGMA1_AVX(w[43]), w[29], w[38], WSIGMA0_AVX(w[30])); SHA256ROUND_AVX(s[3], s[4], s[5], s[6], s[7], s[0], s[1], s[2], 45, w[45]); w[46] = ADD4_32(WSIGMA1_AVX(w[44]), w[30], w[39], WSIGMA0_AVX(w[31])); SHA256ROUND_AVX(s[2], s[3], s[4], s[5], s[6], s[7], s[0], s[1], 46, w[46]); w[47] = ADD4_32(WSIGMA1_AVX(w[45]), w[31], w[40], WSIGMA0_AVX(w[32])); SHA256ROUND_AVX(s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[0], 47, w[47]); w[48] = ADD4_32(WSIGMA1_AVX(w[46]), w[32], w[41], WSIGMA0_AVX(w[33])); SHA256ROUND_AVX(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], 48, w[48]); w[49] = ADD4_32(WSIGMA1_AVX(w[47]), w[33], w[42], WSIGMA0_AVX(w[34])); SHA256ROUND_AVX(s[7], s[0], s[1], s[2], s[3], s[4], s[5], s[6], 49, w[49]); w[50] = ADD4_32(WSIGMA1_AVX(w[48]), w[34], w[43], WSIGMA0_AVX(w[35])); SHA256ROUND_AVX(s[6], s[7], s[0], s[1], s[2], s[3], s[4], s[5], 50, w[50]); w[51] = ADD4_32(WSIGMA1_AVX(w[49]), w[35], w[44], WSIGMA0_AVX(w[36])); SHA256ROUND_AVX(s[5], s[6], s[7], s[0], s[1], s[2], s[3], s[4], 51, w[51]); w[52] = ADD4_32(WSIGMA1_AVX(w[50]), w[36], w[45], WSIGMA0_AVX(w[37])); SHA256ROUND_AVX(s[4], s[5], s[6], s[7], s[0], s[1], s[2], s[3], 52, w[52]); w[53] = ADD4_32(WSIGMA1_AVX(w[51]), w[37], w[46], WSIGMA0_AVX(w[38])); SHA256ROUND_AVX(s[3], s[4], s[5], s[6], s[7], s[0], s[1], s[2], 53, w[53]); w[54] = ADD4_32(WSIGMA1_AVX(w[52]), w[38], w[47], WSIGMA0_AVX(w[39])); SHA256ROUND_AVX(s[2], s[3], s[4], s[5], s[6], s[7], s[0], s[1], 54, w[54]); w[55] = ADD4_32(WSIGMA1_AVX(w[53]), w[39], w[48], WSIGMA0_AVX(w[40])); SHA256ROUND_AVX(s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[0], 55, w[55]); w[56] = ADD4_32(WSIGMA1_AVX(w[54]), w[40], w[49], WSIGMA0_AVX(w[41])); SHA256ROUND_AVX(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], 56, w[56]); w[57] = ADD4_32(WSIGMA1_AVX(w[55]), w[41], w[50], WSIGMA0_AVX(w[42])); SHA256ROUND_AVX(s[7], s[0], s[1], s[2], s[3], s[4], s[5], s[6], 57, w[57]); w[58] = ADD4_32(WSIGMA1_AVX(w[56]), w[42], w[51], WSIGMA0_AVX(w[43])); SHA256ROUND_AVX(s[6], s[7], s[0], s[1], s[2], s[3], s[4], s[5], 58, w[58]); w[59] = ADD4_32(WSIGMA1_AVX(w[57]), w[43], w[52], WSIGMA0_AVX(w[44])); SHA256ROUND_AVX(s[5], s[6], s[7], s[0], s[1], s[2], s[3], s[4], 59, w[59]); w[60] = ADD4_32(WSIGMA1_AVX(w[58]), w[44], w[53], WSIGMA0_AVX(w[45])); SHA256ROUND_AVX(s[4], s[5], s[6], s[7], s[0], s[1], s[2], s[3], 60, w[60]); w[61] = ADD4_32(WSIGMA1_AVX(w[59]), w[45], w[54], WSIGMA0_AVX(w[46])); SHA256ROUND_AVX(s[3], s[4], s[5], s[6], s[7], s[0], s[1], s[2], 61, w[61]); w[62] = ADD4_32(WSIGMA1_AVX(w[60]), w[46], w[55], WSIGMA0_AVX(w[47])); SHA256ROUND_AVX(s[2], s[3], s[4], s[5], s[6], s[7], s[0], s[1], 62, w[62]); w[63] = ADD4_32(WSIGMA1_AVX(w[61]), w[47], w[56], WSIGMA0_AVX(w[48])); SHA256ROUND_AVX(s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[0], 63, w[63]); // Feed Forward ctx->s[0] = ADD32(s[0], ctx->s[0]); ctx->s[1] = ADD32(s[1], ctx->s[1]); ctx->s[2] = ADD32(s[2], ctx->s[2]); ctx->s[3] = ADD32(s[3], ctx->s[3]); ctx->s[4] = ADD32(s[4], ctx->s[4]); ctx->s[5] = ADD32(s[5], ctx->s[5]); ctx->s[6] = ADD32(s[6], ctx->s[6]); ctx->s[7] = ADD32(s[7], ctx->s[7]); }