/* *********************************************************************** * * Implementation of the Skein hash function. * * Source code author: Doug Whiting, 2008. * * This algorithm and source code is released to the public domain. * *********************************************************************** */ #ifndef _SKEIN_BLOCK_H_ #define _SKEIN_BLOCK_H_ #include "skein_base.h" /* get the Skein API definitions */ #ifndef SKEIN_USE_ASM #define SKEIN_USE_ASM (0) /* default is all C code (no ASM) */ #endif #ifndef SKEIN_LOOP #define SKEIN_LOOP 001 /* default: unroll 256 and 512, but not 1024 */ #endif #define BLK_BITS (WCNT * 64) /* some useful definitions for code here */ #define KW_TWK_BASE (0) #define KW_KEY_BASE (3) #define ks (kw + KW_KEY_BASE) #define ts (kw + KW_TWK_BASE) #ifdef SKEIN_DEBUG #define debug_save_tweak(ctx) \ { \ ctx->h.tweak[0] = ts[0]; \ ctx->h.tweak[1] = ts[1]; \ } #else #define debug_save_tweak(ctx) #endif #if !(SKEIN_USE_ASM & 256) #undef RCNT #define RCNT (SKEIN_256_ROUNDS_TOTAL / 8) #ifdef SKEIN_LOOP /* configure how much to unroll the loop */ #define SKEIN_UNROLL_256 (((SKEIN_LOOP) / 100) % 10) #else #define SKEIN_UNROLL_256 (0) #endif #if SKEIN_UNROLL_256 #if (RCNT % SKEIN_UNROLL_256) #error "Invalid SKEIN_UNROLL_256" /* sanity check on unroll count */ #endif #endif #define ROUND256(p0, p1, p2, p3, ROT, r_num) \ do { \ X##p0 += X##p1; \ X##p1 = rol64(X##p1, ROT##_0); \ X##p1 ^= X##p0; \ X##p2 += X##p3; \ X##p3 = rol64(X##p3, ROT##_1); \ X##p3 ^= X##p2; \ } while (0) #if SKEIN_UNROLL_256 == 0 #define R256(p0, p1, p2, p3, ROT, r_num) /* fully unrolled */ \ ROUND256(p0, p1, p2, p3, ROT, r_num) #define I256(R) \ do { \ /* inject the key schedule value */ \ X0 += ks[((R) + 1) % 5]; \ X1 += ks[((R) + 2) % 5] + ts[((R) + 1) % 3]; \ X2 += ks[((R) + 3) % 5] + ts[((R) + 2) % 3]; \ X3 += ks[((R) + 4) % 5] + (R) + 1; \ } while (0) #else /* looping version */ #define R256(p0, p1, p2, p3, ROT, r_num) ROUND256(p0, p1, p2, p3, ROT, r_num) #define I256(R) \ do { \ /* inject the key schedule value */ \ X0 += ks[r + (R) + 0]; \ X1 += ks[r + (R) + 1] + ts[r + (R) + 0];\ X2 += ks[r + (R) + 2] + ts[r + (R) + 1];\ X3 += ks[r + (R) + 3] + r + (R); \ /* rotate key schedule */ \ ks[r + (R) + 4] = ks[r + (R) - 1]; \ ts[r + (R) + 2] = ts[r + (R) - 1]; \ } while (0) #endif #define R256_8_ROUNDS(R) \ do { \ R256(0, 1, 2, 3, R_256_0, 8 * (R) + 1); \ R256(0, 3, 2, 1, R_256_1, 8 * (R) + 2); \ R256(0, 1, 2, 3, R_256_2, 8 * (R) + 3); \ R256(0, 3, 2, 1, R_256_3, 8 * (R) + 4); \ I256(2 * (R)); \ R256(0, 1, 2, 3, R_256_4, 8 * (R) + 5); \ R256(0, 3, 2, 1, R_256_5, 8 * (R) + 6); \ R256(0, 1, 2, 3, R_256_6, 8 * (R) + 7); \ R256(0, 3, 2, 1, R_256_7, 8 * (R) + 8); \ I256(2 * (R) + 1); \ } while (0) #define R256_UNROLL_R(NN) \ ((SKEIN_UNROLL_256 == 0 && \ SKEIN_256_ROUNDS_TOTAL / 8 > (NN)) || \ (SKEIN_UNROLL_256 > (NN))) #if (SKEIN_UNROLL_256 > 14) #error "need more unrolling in skein_256_process_block" #endif #endif #if !(SKEIN_USE_ASM & 512) #undef RCNT #define RCNT (SKEIN_512_ROUNDS_TOTAL / 8) #ifdef SKEIN_LOOP /* configure how much to unroll the loop */ #define SKEIN_UNROLL_512 (((SKEIN_LOOP) / 10) % 10) #else #define SKEIN_UNROLL_512 (0) #endif #if SKEIN_UNROLL_512 #if (RCNT % SKEIN_UNROLL_512) #error "Invalid SKEIN_UNROLL_512" /* sanity check on unroll count */ #endif #endif #define ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \ do { \ X##p0 += X##p1; \ X##p1 = rol64(X##p1, ROT##_0); \ X##p1 ^= X##p0; \ X##p2 += X##p3; \ X##p3 = rol64(X##p3, ROT##_1); \ X##p3 ^= X##p2; \ X##p4 += X##p5; \ X##p5 = rol64(X##p5, ROT##_2); \ X##p5 ^= X##p4; \ X##p6 += X##p7; \ X##p7 = rol64(X##p7, ROT##_3); \ X##p7 ^= X##p6; \ } while (0) #if SKEIN_UNROLL_512 == 0 #define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) /* unrolled */ \ ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) #define I512(R) \ do { \ /* inject the key schedule value */ \ X0 += ks[((R) + 1) % 9]; \ X1 += ks[((R) + 2) % 9]; \ X2 += ks[((R) + 3) % 9]; \ X3 += ks[((R) + 4) % 9]; \ X4 += ks[((R) + 5) % 9]; \ X5 += ks[((R) + 6) % 9] + ts[((R) + 1) % 3]; \ X6 += ks[((R) + 7) % 9] + ts[((R) + 2) % 3]; \ X7 += ks[((R) + 8) % 9] + (R) + 1; \ } while (0) #else /* looping version */ #define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \ ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \ #define I512(R) \ do { \ /* inject the key schedule value */ \ X0 += ks[r + (R) + 0]; \ X1 += ks[r + (R) + 1]; \ X2 += ks[r + (R) + 2]; \ X3 += ks[r + (R) + 3]; \ X4 += ks[r + (R) + 4]; \ X5 += ks[r + (R) + 5] + ts[r + (R) + 0]; \ X6 += ks[r + (R) + 6] + ts[r + (R) + 1]; \ X7 += ks[r + (R) + 7] + r + (R); \ /* rotate key schedule */ \ ks[r + (R) + 8] = ks[r + (R) - 1]; \ ts[r + (R) + 2] = ts[r + (R) - 1]; \ } while (0) #endif /* end of looped code definitions */ #define R512_8_ROUNDS(R) /* do 8 full rounds */ \ do { \ R512(0, 1, 2, 3, 4, 5, 6, 7, R_512_0, 8 * (R) + 1); \ R512(2, 1, 4, 7, 6, 5, 0, 3, R_512_1, 8 * (R) + 2); \ R512(4, 1, 6, 3, 0, 5, 2, 7, R_512_2, 8 * (R) + 3); \ R512(6, 1, 0, 7, 2, 5, 4, 3, R_512_3, 8 * (R) + 4); \ I512(2 * (R)); \ R512(0, 1, 2, 3, 4, 5, 6, 7, R_512_4, 8 * (R) + 5); \ R512(2, 1, 4, 7, 6, 5, 0, 3, R_512_5, 8 * (R) + 6); \ R512(4, 1, 6, 3, 0, 5, 2, 7, R_512_6, 8 * (R) + 7); \ R512(6, 1, 0, 7, 2, 5, 4, 3, R_512_7, 8 * (R) + 8); \ I512(2 * (R) + 1); /* and key injection */ \ } while (0) #define R512_UNROLL_R(NN) \ ((SKEIN_UNROLL_512 == 0 && \ SKEIN_512_ROUNDS_TOTAL / 8 > (NN)) || \ (SKEIN_UNROLL_512 > (NN))) #if (SKEIN_UNROLL_512 > 14) #error "need more unrolling in skein_512_process_block" #endif #endif #if !(SKEIN_USE_ASM & 1024) #undef RCNT #define RCNT (SKEIN_1024_ROUNDS_TOTAL / 8) #ifdef SKEIN_LOOP /* configure how much to unroll the loop */ #define SKEIN_UNROLL_1024 ((SKEIN_LOOP) % 10) #else #define SKEIN_UNROLL_1024 (0) #endif #if (SKEIN_UNROLL_1024 != 0) #if (RCNT % SKEIN_UNROLL_1024) #error "Invalid SKEIN_UNROLL_1024" /* sanity check on unroll count */ #endif #endif #define ROUND1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \ pF, ROT, r_num) \ do { \ X##p0 += X##p1; \ X##p1 = rol64(X##p1, ROT##_0); \ X##p1 ^= X##p0; \ X##p2 += X##p3; \ X##p3 = rol64(X##p3, ROT##_1); \ X##p3 ^= X##p2; \ X##p4 += X##p5; \ X##p5 = rol64(X##p5, ROT##_2); \ X##p5 ^= X##p4; \ X##p6 += X##p7; \ X##p7 = rol64(X##p7, ROT##_3); \ X##p7 ^= X##p6; \ X##p8 += X##p9; \ X##p9 = rol64(X##p9, ROT##_4); \ X##p9 ^= X##p8; \ X##pA += X##pB; \ X##pB = rol64(X##pB, ROT##_5); \ X##pB ^= X##pA; \ X##pC += X##pD; \ X##pD = rol64(X##pD, ROT##_6); \ X##pD ^= X##pC; \ X##pE += X##pF; \ X##pF = rol64(X##pF, ROT##_7); \ X##pF ^= X##pE; \ } while (0) #if SKEIN_UNROLL_1024 == 0 #define R1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, pF, \ ROT, rn) \ ROUND1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \ pF, ROT, rn) \ #define I1024(R) \ do { \ /* inject the key schedule value */ \ X00 += ks[((R) + 1) % 17]; \ X01 += ks[((R) + 2) % 17]; \ X02 += ks[((R) + 3) % 17]; \ X03 += ks[((R) + 4) % 17]; \ X04 += ks[((R) + 5) % 17]; \ X05 += ks[((R) + 6) % 17]; \ X06 += ks[((R) + 7) % 17]; \ X07 += ks[((R) + 8) % 17]; \ X08 += ks[((R) + 9) % 17]; \ X09 += ks[((R) + 10) % 17]; \ X10 += ks[((R) + 11) % 17]; \ X11 += ks[((R) + 12) % 17]; \ X12 += ks[((R) + 13) % 17]; \ X13 += ks[((R) + 14) % 17] + ts[((R) + 1) % 3]; \ X14 += ks[((R) + 15) % 17] + ts[((R) + 2) % 3]; \ X15 += ks[((R) + 16) % 17] + (R) + 1; \ } while (0) #else /* looping version */ #define R1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, pF, \ ROT, rn) \ ROUND1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \ pF, ROT, rn) \ #define I1024(R) \ do { \ /* inject the key schedule value */ \ X00 += ks[r + (R) + 0]; \ X01 += ks[r + (R) + 1]; \ X02 += ks[r + (R) + 2]; \ X03 += ks[r + (R) + 3]; \ X04 += ks[r + (R) + 4]; \ X05 += ks[r + (R) + 5]; \ X06 += ks[r + (R) + 6]; \ X07 += ks[r + (R) + 7]; \ X08 += ks[r + (R) + 8]; \ X09 += ks[r + (R) + 9]; \ X10 += ks[r + (R) + 10]; \ X11 += ks[r + (R) + 11]; \ X12 += ks[r + (R) + 12]; \ X13 += ks[r + (R) + 13] + ts[r + (R) + 0]; \ X14 += ks[r + (R) + 14] + ts[r + (R) + 1]; \ X15 += ks[r + (R) + 15] + r + (R); \ /* rotate key schedule */ \ ks[r + (R) + 16] = ks[r + (R) - 1]; \ ts[r + (R) + 2] = ts[r + (R) - 1]; \ } while (0) #endif #define R1024_8_ROUNDS(R) \ do { \ R1024(00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, \ 13, 14, 15, R1024_0, 8 * (R) + 1); \ R1024(00, 09, 02, 13, 06, 11, 04, 15, 10, 07, 12, 03, 14, \ 05, 08, 01, R1024_1, 8 * (R) + 2); \ R1024(00, 07, 02, 05, 04, 03, 06, 01, 12, 15, 14, 13, 08, \ 11, 10, 09, R1024_2, 8 * (R) + 3); \ R1024(00, 15, 02, 11, 06, 13, 04, 09, 14, 01, 08, 05, 10, \ 03, 12, 07, R1024_3, 8 * (R) + 4); \ I1024(2 * (R)); \ R1024(00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, \ 13, 14, 15, R1024_4, 8 * (R) + 5); \ R1024(00, 09, 02, 13, 06, 11, 04, 15, 10, 07, 12, 03, 14, \ 05, 08, 01, R1024_5, 8 * (R) + 6); \ R1024(00, 07, 02, 05, 04, 03, 06, 01, 12, 15, 14, 13, 08, \ 11, 10, 09, R1024_6, 8 * (R) + 7); \ R1024(00, 15, 02, 11, 06, 13, 04, 09, 14, 01, 08, 05, 10, \ 03, 12, 07, R1024_7, 8 * (R) + 8); \ I1024(2 * (R) + 1); \ } while (0) #define R1024_UNROLL_R(NN) \ ((SKEIN_UNROLL_1024 == 0 && \ SKEIN_1024_ROUNDS_TOTAL / 8 > (NN)) || \ (SKEIN_UNROLL_1024 > (NN))) #if (SKEIN_UNROLL_1024 > 14) #error "need more unrolling in Skein_1024_Process_Block" #endif #endif void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr, size_t blk_cnt, size_t byte_cnt_add); void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr, size_t blk_cnt, size_t byte_cnt_add); void skein_1024_process_block(struct skein_1024_ctx *ctx, const u8 *blk_ptr, size_t blk_cnt, size_t byte_cnt_add); #endif