diff options
Diffstat (limited to 'module/icp/algs/skein/skein_block.c')
| -rw-r--r-- | module/icp/algs/skein/skein_block.c | 790 |
1 files changed, 790 insertions, 0 deletions
diff --git a/module/icp/algs/skein/skein_block.c b/module/icp/algs/skein/skein_block.c new file mode 100644 index 000000000000..7ba165a48511 --- /dev/null +++ b/module/icp/algs/skein/skein_block.c @@ -0,0 +1,790 @@ +/* + * Implementation of the Skein block functions. + * Source code author: Doug Whiting, 2008. + * This algorithm and source code is released to the public domain. + * Compile-time switches: + * SKEIN_USE_ASM -- set bits (256/512/1024) to select which + * versions use ASM code for block processing + * [default: use C for all block sizes] + */ +/* Copyright 2013 Doug Whiting. This code is released to the public domain. */ + +#include <sys/skein.h> +#include "skein_impl.h" +#include <sys/isa_defs.h> /* for _ILP32 */ + +#ifndef SKEIN_USE_ASM +#define SKEIN_USE_ASM (0) /* default is all C code (no ASM) */ +#endif + +#ifndef SKEIN_LOOP +/* + * The low-level checksum routines use a lot of stack space. On systems where + * small stacks frame are enforced (like 32-bit kernel builds), do not unroll + * checksum calculations to save stack space. + * + * Even with no loops unrolled, we still can exceed the 1k stack frame limit + * in Skein1024_Process_Block() (it hits 1272 bytes on ARM32). We can + * safely ignore it though, since that the checksum functions will be called + * from a worker thread that won't be using much stack. That's why we have + * the #pragma here to ignore the warning. + */ +#if defined(_ILP32) || defined(__powerpc) /* Assume small stack */ +#pragma GCC diagnostic ignored "-Wframe-larger-than=" +/* + * We're running on 32-bit, don't unroll loops to save stack frame space + * + * Due to the ways the calculations on SKEIN_LOOP are done in + * Skein_*_Process_Block(), a value of 111 disables unrolling loops + * in any of those functions. + */ +#define SKEIN_LOOP 111 +#else +/* We're compiling with large stacks */ +#define SKEIN_LOOP 001 /* default: unroll 256 and 512, but not 1024 */ +#endif +#endif + +/* some useful definitions for code here */ +#define BLK_BITS (WCNT*64) +#define KW_TWK_BASE (0) +#define KW_KEY_BASE (3) +#define ks (kw + KW_KEY_BASE) +#define ts (kw + KW_TWK_BASE) + +/* no debugging in Illumos version */ +#define DebugSaveTweak(ctx) + +/* Skein_256 */ +#if !(SKEIN_USE_ASM & 256) +void +Skein_256_Process_Block(Skein_256_Ctxt_t *ctx, const uint8_t *blkPtr, + size_t blkCnt, size_t byteCntAdd) +{ + enum { + WCNT = SKEIN_256_STATE_WORDS + }; +#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 + size_t r; + /* key schedule words : chaining vars + tweak + "rotation" */ + uint64_t kw[WCNT + 4 + RCNT * 2]; +#else + uint64_t kw[WCNT + 4]; /* key schedule words : chaining vars + tweak */ +#endif + /* local copy of context vars, for speed */ + uint64_t X0, X1, X2, X3; + uint64_t w[WCNT]; /* local copy of input block */ +#ifdef SKEIN_DEBUG + /* use for debugging (help compiler put Xn in registers) */ + const uint64_t *Xptr[4]; + Xptr[0] = &X0; + Xptr[1] = &X1; + Xptr[2] = &X2; + Xptr[3] = &X3; +#endif + Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */ + ts[0] = ctx->h.T[0]; + ts[1] = ctx->h.T[1]; + do { + /* + * this implementation only supports 2**64 input bytes + * (no carry out here) + */ + ts[0] += byteCntAdd; /* update processed length */ + + /* precompute the key schedule for this block */ + ks[0] = ctx->X[0]; + ks[1] = ctx->X[1]; + ks[2] = ctx->X[2]; + ks[3] = ctx->X[3]; + ks[4] = ks[0] ^ ks[1] ^ ks[2] ^ ks[3] ^ SKEIN_KS_PARITY; + + ts[2] = ts[0] ^ ts[1]; + + /* get input block in little-endian format */ + Skein_Get64_LSB_First(w, blkPtr, WCNT); + DebugSaveTweak(ctx); + Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blkPtr, w, ks, ts); + + X0 = w[0] + ks[0]; /* do the first full key injection */ + X1 = w[1] + ks[1] + ts[0]; + X2 = w[2] + ks[2] + ts[1]; + X3 = w[3] + ks[3]; + + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL, + Xptr); /* show starting state values */ + + blkPtr += SKEIN_256_BLOCK_BYTES; + + /* run the rounds */ + +#define Round256(p0, p1, p2, p3, ROT, rNum) \ + X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0; \ + X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2; \ + +#if SKEIN_UNROLL_256 == 0 +#define R256(p0, p1, p2, p3, ROT, rNum) /* fully unrolled */ \ + Round256(p0, p1, p2, p3, ROT, rNum) \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rNum, Xptr); + +#define I256(R) \ + X0 += ks[((R) + 1) % 5]; /* inject the key schedule value */ \ + 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; \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); +#else /* looping version */ +#define R256(p0, p1, p2, p3, ROT, rNum) \ + Round256(p0, p1, p2, p3, ROT, rNum) \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rNum, Xptr); + +#define I256(R) \ + X0 += ks[r + (R) + 0]; /* inject the key schedule value */ \ + 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); \ + ks[r + (R) + 4] = ks[r + (R) - 1]; /* rotate key schedule */ \ + ts[r + (R) + 2] = ts[r + (R) - 1]; \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); + + /* loop through it */ + for (r = 1; r < 2 * RCNT; r += 2 * SKEIN_UNROLL_256) +#endif + { +#define R256_8_rounds(R) \ + 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); + + R256_8_rounds(0); + +#define R256_Unroll_R(NN) \ + ((SKEIN_UNROLL_256 == 0 && SKEIN_256_ROUNDS_TOTAL / 8 > (NN)) || \ + (SKEIN_UNROLL_256 > (NN))) + +#if R256_Unroll_R(1) + R256_8_rounds(1); +#endif +#if R256_Unroll_R(2) + R256_8_rounds(2); +#endif +#if R256_Unroll_R(3) + R256_8_rounds(3); +#endif +#if R256_Unroll_R(4) + R256_8_rounds(4); +#endif +#if R256_Unroll_R(5) + R256_8_rounds(5); +#endif +#if R256_Unroll_R(6) + R256_8_rounds(6); +#endif +#if R256_Unroll_R(7) + R256_8_rounds(7); +#endif +#if R256_Unroll_R(8) + R256_8_rounds(8); +#endif +#if R256_Unroll_R(9) + R256_8_rounds(9); +#endif +#if R256_Unroll_R(10) + R256_8_rounds(10); +#endif +#if R256_Unroll_R(11) + R256_8_rounds(11); +#endif +#if R256_Unroll_R(12) + R256_8_rounds(12); +#endif +#if R256_Unroll_R(13) + R256_8_rounds(13); +#endif +#if R256_Unroll_R(14) + R256_8_rounds(14); +#endif +#if (SKEIN_UNROLL_256 > 14) +#error "need more unrolling in Skein_256_Process_Block" +#endif + } + /* + * do the final "feedforward" xor, update context chaining vars + */ + ctx->X[0] = X0 ^ w[0]; + ctx->X[1] = X1 ^ w[1]; + ctx->X[2] = X2 ^ w[2]; + ctx->X[3] = X3 ^ w[3]; + + Skein_Show_Round(BLK_BITS, &ctx->h, SKEIN_RND_FEED_FWD, ctx->X); + + ts[1] &= ~SKEIN_T1_FLAG_FIRST; + } while (--blkCnt); + ctx->h.T[0] = ts[0]; + ctx->h.T[1] = ts[1]; +} + +#if defined(SKEIN_CODE_SIZE) || defined(SKEIN_PERF) +size_t +Skein_256_Process_Block_CodeSize(void) +{ + return ((uint8_t *)Skein_256_Process_Block_CodeSize) - + ((uint8_t *)Skein_256_Process_Block); +} + +uint_t +Skein_256_Unroll_Cnt(void) +{ + return (SKEIN_UNROLL_256); +} +#endif +#endif + +/* Skein_512 */ +#if !(SKEIN_USE_ASM & 512) +void +Skein_512_Process_Block(Skein_512_Ctxt_t *ctx, const uint8_t *blkPtr, + size_t blkCnt, size_t byteCntAdd) +{ + enum { + WCNT = SKEIN_512_STATE_WORDS + }; +#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 + size_t r; + /* key schedule words : chaining vars + tweak + "rotation" */ + uint64_t kw[WCNT + 4 + RCNT * 2]; +#else + uint64_t kw[WCNT + 4]; /* key schedule words : chaining vars + tweak */ +#endif + /* local copy of vars, for speed */ + uint64_t X0, X1, X2, X3, X4, X5, X6, X7; + uint64_t w[WCNT]; /* local copy of input block */ +#ifdef SKEIN_DEBUG + /* use for debugging (help compiler put Xn in registers) */ + const uint64_t *Xptr[8]; + Xptr[0] = &X0; + Xptr[1] = &X1; + Xptr[2] = &X2; + Xptr[3] = &X3; + Xptr[4] = &X4; + Xptr[5] = &X5; + Xptr[6] = &X6; + Xptr[7] = &X7; +#endif + + Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */ + ts[0] = ctx->h.T[0]; + ts[1] = ctx->h.T[1]; + do { + /* + * this implementation only supports 2**64 input bytes + * (no carry out here) + */ + ts[0] += byteCntAdd; /* update processed length */ + + /* precompute the key schedule for this block */ + ks[0] = ctx->X[0]; + ks[1] = ctx->X[1]; + ks[2] = ctx->X[2]; + ks[3] = ctx->X[3]; + ks[4] = ctx->X[4]; + ks[5] = ctx->X[5]; + ks[6] = ctx->X[6]; + ks[7] = ctx->X[7]; + ks[8] = ks[0] ^ ks[1] ^ ks[2] ^ ks[3] ^ + ks[4] ^ ks[5] ^ ks[6] ^ ks[7] ^ SKEIN_KS_PARITY; + + ts[2] = ts[0] ^ ts[1]; + + /* get input block in little-endian format */ + Skein_Get64_LSB_First(w, blkPtr, WCNT); + DebugSaveTweak(ctx); + Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blkPtr, w, ks, ts); + + X0 = w[0] + ks[0]; /* do the first full key injection */ + X1 = w[1] + ks[1]; + X2 = w[2] + ks[2]; + X3 = w[3] + ks[3]; + X4 = w[4] + ks[4]; + X5 = w[5] + ks[5] + ts[0]; + X6 = w[6] + ks[6] + ts[1]; + X7 = w[7] + ks[7]; + + blkPtr += SKEIN_512_BLOCK_BYTES; + + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL, + Xptr); + /* run the rounds */ +#define Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \ + X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0;\ + X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2;\ + X##p4 += X##p5; X##p5 = RotL_64(X##p5, ROT##_2); X##p5 ^= X##p4;\ + X##p6 += X##p7; X##p7 = RotL_64(X##p7, ROT##_3); X##p7 ^= X##p6; + +#if SKEIN_UNROLL_512 == 0 +#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) /* unrolled */ \ + Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rNum, Xptr); + +#define I512(R) \ + X0 += ks[((R) + 1) % 9]; /* inject the key schedule value */\ + 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; \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); +#else /* looping version */ +#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \ + Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rNum, Xptr); + +#define I512(R) \ + X0 += ks[r + (R) + 0]; /* inject the key schedule value */ \ + 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); \ + ks[r + (R)+8] = ks[r + (R) - 1]; /* rotate key schedule */\ + ts[r + (R)+2] = ts[r + (R) - 1]; \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); + + /* loop through it */ + for (r = 1; r < 2 * RCNT; r += 2 * SKEIN_UNROLL_512) +#endif /* end of looped code definitions */ + { +#define R512_8_rounds(R) /* do 8 full rounds */ \ + 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 */ + + R512_8_rounds(0); + +#define R512_Unroll_R(NN) \ + ((SKEIN_UNROLL_512 == 0 && SKEIN_512_ROUNDS_TOTAL / 8 > (NN)) || \ + (SKEIN_UNROLL_512 > (NN))) + +#if R512_Unroll_R(1) + R512_8_rounds(1); +#endif +#if R512_Unroll_R(2) + R512_8_rounds(2); +#endif +#if R512_Unroll_R(3) + R512_8_rounds(3); +#endif +#if R512_Unroll_R(4) + R512_8_rounds(4); +#endif +#if R512_Unroll_R(5) + R512_8_rounds(5); +#endif +#if R512_Unroll_R(6) + R512_8_rounds(6); +#endif +#if R512_Unroll_R(7) + R512_8_rounds(7); +#endif +#if R512_Unroll_R(8) + R512_8_rounds(8); +#endif +#if R512_Unroll_R(9) + R512_8_rounds(9); +#endif +#if R512_Unroll_R(10) + R512_8_rounds(10); +#endif +#if R512_Unroll_R(11) + R512_8_rounds(11); +#endif +#if R512_Unroll_R(12) + R512_8_rounds(12); +#endif +#if R512_Unroll_R(13) + R512_8_rounds(13); +#endif +#if R512_Unroll_R(14) + R512_8_rounds(14); +#endif +#if (SKEIN_UNROLL_512 > 14) +#error "need more unrolling in Skein_512_Process_Block" +#endif + } + + /* + * do the final "feedforward" xor, update context chaining vars + */ + ctx->X[0] = X0 ^ w[0]; + ctx->X[1] = X1 ^ w[1]; + ctx->X[2] = X2 ^ w[2]; + ctx->X[3] = X3 ^ w[3]; + ctx->X[4] = X4 ^ w[4]; + ctx->X[5] = X5 ^ w[5]; + ctx->X[6] = X6 ^ w[6]; + ctx->X[7] = X7 ^ w[7]; + Skein_Show_Round(BLK_BITS, &ctx->h, SKEIN_RND_FEED_FWD, ctx->X); + + ts[1] &= ~SKEIN_T1_FLAG_FIRST; + } while (--blkCnt); + ctx->h.T[0] = ts[0]; + ctx->h.T[1] = ts[1]; +} + +#if defined(SKEIN_CODE_SIZE) || defined(SKEIN_PERF) +size_t +Skein_512_Process_Block_CodeSize(void) +{ + return ((uint8_t *)Skein_512_Process_Block_CodeSize) - + ((uint8_t *)Skein_512_Process_Block); +} + +uint_t +Skein_512_Unroll_Cnt(void) +{ + return (SKEIN_UNROLL_512); +} +#endif +#endif + +/* Skein1024 */ +#if !(SKEIN_USE_ASM & 1024) +void +Skein1024_Process_Block(Skein1024_Ctxt_t *ctx, const uint8_t *blkPtr, + size_t blkCnt, size_t byteCntAdd) +{ + /* do it in C, always looping (unrolled is bigger AND slower!) */ + enum { + WCNT = SKEIN1024_STATE_WORDS + }; +#undef RCNT +#define RCNT (SKEIN1024_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 + size_t r; + /* key schedule words : chaining vars + tweak + "rotation" */ + uint64_t kw[WCNT + 4 + RCNT * 2]; +#else + uint64_t kw[WCNT + 4]; /* key schedule words : chaining vars + tweak */ +#endif + + /* local copy of vars, for speed */ + uint64_t X00, X01, X02, X03, X04, X05, X06, X07, X08, X09, X10, X11, + X12, X13, X14, X15; + uint64_t w[WCNT]; /* local copy of input block */ +#ifdef SKEIN_DEBUG + /* use for debugging (help compiler put Xn in registers) */ + const uint64_t *Xptr[16]; + Xptr[0] = &X00; + Xptr[1] = &X01; + Xptr[2] = &X02; + Xptr[3] = &X03; + Xptr[4] = &X04; + Xptr[5] = &X05; + Xptr[6] = &X06; + Xptr[7] = &X07; + Xptr[8] = &X08; + Xptr[9] = &X09; + Xptr[10] = &X10; + Xptr[11] = &X11; + Xptr[12] = &X12; + Xptr[13] = &X13; + Xptr[14] = &X14; + Xptr[15] = &X15; +#endif + + Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */ + ts[0] = ctx->h.T[0]; + ts[1] = ctx->h.T[1]; + do { + /* + * this implementation only supports 2**64 input bytes + * (no carry out here) + */ + ts[0] += byteCntAdd; /* update processed length */ + + /* precompute the key schedule for this block */ + ks[0] = ctx->X[0]; + ks[1] = ctx->X[1]; + ks[2] = ctx->X[2]; + ks[3] = ctx->X[3]; + ks[4] = ctx->X[4]; + ks[5] = ctx->X[5]; + ks[6] = ctx->X[6]; + ks[7] = ctx->X[7]; + ks[8] = ctx->X[8]; + ks[9] = ctx->X[9]; + ks[10] = ctx->X[10]; + ks[11] = ctx->X[11]; + ks[12] = ctx->X[12]; + ks[13] = ctx->X[13]; + ks[14] = ctx->X[14]; + ks[15] = ctx->X[15]; + ks[16] = ks[0] ^ ks[1] ^ ks[2] ^ ks[3] ^ + ks[4] ^ ks[5] ^ ks[6] ^ ks[7] ^ + ks[8] ^ ks[9] ^ ks[10] ^ ks[11] ^ + ks[12] ^ ks[13] ^ ks[14] ^ ks[15] ^ SKEIN_KS_PARITY; + + ts[2] = ts[0] ^ ts[1]; + + /* get input block in little-endian format */ + Skein_Get64_LSB_First(w, blkPtr, WCNT); + DebugSaveTweak(ctx); + Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blkPtr, w, ks, ts); + + X00 = w[0] + ks[0]; /* do the first full key injection */ + X01 = w[1] + ks[1]; + X02 = w[2] + ks[2]; + X03 = w[3] + ks[3]; + X04 = w[4] + ks[4]; + X05 = w[5] + ks[5]; + X06 = w[6] + ks[6]; + X07 = w[7] + ks[7]; + X08 = w[8] + ks[8]; + X09 = w[9] + ks[9]; + X10 = w[10] + ks[10]; + X11 = w[11] + ks[11]; + X12 = w[12] + ks[12]; + X13 = w[13] + ks[13] + ts[0]; + X14 = w[14] + ks[14] + ts[1]; + X15 = w[15] + ks[15]; + + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL, + Xptr); + +#define Round1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, \ + pD, pE, pF, ROT, rNum) \ + X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0;\ + X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2;\ + X##p4 += X##p5; X##p5 = RotL_64(X##p5, ROT##_2); X##p5 ^= X##p4;\ + X##p6 += X##p7; X##p7 = RotL_64(X##p7, ROT##_3); X##p7 ^= X##p6;\ + X##p8 += X##p9; X##p9 = RotL_64(X##p9, ROT##_4); X##p9 ^= X##p8;\ + X##pA += X##pB; X##pB = RotL_64(X##pB, ROT##_5); X##pB ^= X##pA;\ + X##pC += X##pD; X##pD = RotL_64(X##pD, ROT##_6); X##pD ^= X##pC;\ + X##pE += X##pF; X##pF = RotL_64(X##pF, ROT##_7); X##pF ^= X##pE; + +#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) \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rn, Xptr); + +#define I1024(R) \ + X00 += ks[((R) + 1) % 17]; /* inject the key schedule value */\ + 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; \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); +#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) \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rn, Xptr); + +#define I1024(R) \ + X00 += ks[r + (R) + 0]; /* inject the key schedule value */ \ + 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); \ + ks[r + (R) + 16] = ks[r + (R) - 1]; /* rotate key schedule */\ + ts[r + (R) + 2] = ts[r + (R) - 1]; \ + Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); + + /* loop through it */ + for (r = 1; r <= 2 * RCNT; r += 2 * SKEIN_UNROLL_1024) +#endif + { +#define R1024_8_rounds(R) /* do 8 full rounds */ \ + 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); + + R1024_8_rounds(0); + +#define R1024_Unroll_R(NN) \ + ((SKEIN_UNROLL_1024 == 0 && SKEIN1024_ROUNDS_TOTAL/8 > (NN)) || \ + (SKEIN_UNROLL_1024 > (NN))) + +#if R1024_Unroll_R(1) + R1024_8_rounds(1); +#endif +#if R1024_Unroll_R(2) + R1024_8_rounds(2); +#endif +#if R1024_Unroll_R(3) + R1024_8_rounds(3); +#endif +#if R1024_Unroll_R(4) + R1024_8_rounds(4); +#endif +#if R1024_Unroll_R(5) + R1024_8_rounds(5); +#endif +#if R1024_Unroll_R(6) + R1024_8_rounds(6); +#endif +#if R1024_Unroll_R(7) + R1024_8_rounds(7); +#endif +#if R1024_Unroll_R(8) + R1024_8_rounds(8); +#endif +#if R1024_Unroll_R(9) + R1024_8_rounds(9); +#endif +#if R1024_Unroll_R(10) + R1024_8_rounds(10); +#endif +#if R1024_Unroll_R(11) + R1024_8_rounds(11); +#endif +#if R1024_Unroll_R(12) + R1024_8_rounds(12); +#endif +#if R1024_Unroll_R(13) + R1024_8_rounds(13); +#endif +#if R1024_Unroll_R(14) + R1024_8_rounds(14); +#endif +#if (SKEIN_UNROLL_1024 > 14) +#error "need more unrolling in Skein_1024_Process_Block" +#endif + } + /* + * do the final "feedforward" xor, update context chaining vars + */ + + ctx->X[0] = X00 ^ w[0]; + ctx->X[1] = X01 ^ w[1]; + ctx->X[2] = X02 ^ w[2]; + ctx->X[3] = X03 ^ w[3]; + ctx->X[4] = X04 ^ w[4]; + ctx->X[5] = X05 ^ w[5]; + ctx->X[6] = X06 ^ w[6]; + ctx->X[7] = X07 ^ w[7]; + ctx->X[8] = X08 ^ w[8]; + ctx->X[9] = X09 ^ w[9]; + ctx->X[10] = X10 ^ w[10]; + ctx->X[11] = X11 ^ w[11]; + ctx->X[12] = X12 ^ w[12]; + ctx->X[13] = X13 ^ w[13]; + ctx->X[14] = X14 ^ w[14]; + ctx->X[15] = X15 ^ w[15]; + + Skein_Show_Round(BLK_BITS, &ctx->h, SKEIN_RND_FEED_FWD, ctx->X); + + ts[1] &= ~SKEIN_T1_FLAG_FIRST; + blkPtr += SKEIN1024_BLOCK_BYTES; + } while (--blkCnt); + ctx->h.T[0] = ts[0]; + ctx->h.T[1] = ts[1]; +} + +#if defined(SKEIN_CODE_SIZE) || defined(SKEIN_PERF) +size_t +Skein1024_Process_Block_CodeSize(void) +{ + return ((uint8_t *)Skein1024_Process_Block_CodeSize) - + ((uint8_t *)Skein1024_Process_Block); +} + +uint_t +Skein1024_Unroll_Cnt(void) +{ + return (SKEIN_UNROLL_1024); +} +#endif +#endif |