| /* |
| *********************************************************************** |
| * |
| * 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 |
