diff options
author | Eric Rost <eric.rost@mybabylon.net> | 2014-09-30 22:23:23 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-10-20 11:27:52 +0800 |
commit | 468d958d2478c5dca4eb08c34cdb5c2a1436ad79 (patch) | |
tree | bda86b82ad547a8554a64f82554df32bcfb7d32f /drivers/staging/skein | |
parent | 6ffb16475c99b59a5db1a127f1b82084840c0779 (diff) | |
download | op-kernel-dev-468d958d2478c5dca4eb08c34cdb5c2a1436ad79.zip op-kernel-dev-468d958d2478c5dca4eb08c34cdb5c2a1436ad79.tar.gz |
staging: skein: File Reorg
Reorganizes file to remove #defines from middle of functions. Also
removes #if'd loop declarations and adds ternary if driven loops.
Signed-off-by: Eric Rost <eric.rost@mybabylon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/skein')
-rw-r--r-- | drivers/staging/skein/skein_block.c | 674 |
1 files changed, 348 insertions, 326 deletions
diff --git a/drivers/staging/skein/skein_block.c b/drivers/staging/skein/skein_block.c index 71c14f5..88bc718 100644 --- a/drivers/staging/skein/skein_block.c +++ b/drivers/staging/skein/skein_block.c @@ -42,17 +42,9 @@ #define debug_save_tweak(ctx) #endif -/***************************** SKEIN_256 ******************************/ #if !(SKEIN_USE_ASM & 256) -void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr, - size_t blk_cnt, size_t byte_cnt_add) -{ /* do it in C */ - 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 @@ -63,56 +55,7 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr, #if (RCNT % SKEIN_UNROLL_256) #error "Invalid SKEIN_UNROLL_256" /* sanity check on unroll count */ #endif - size_t r; - u64 kw[WCNT+4+RCNT*2]; /* key schedule: chaining vars + tweak + "rot"*/ -#else - u64 kw[WCNT+4]; /* key schedule words : chaining vars + tweak */ #endif - u64 X0, X1, X2, X3; /* local copy of context vars, for speed */ - u64 w[WCNT]; /* local copy of input block */ -#ifdef SKEIN_DEBUG - const u64 *X_ptr[4]; /* use for debugging (help cc put Xn in regs) */ - - X_ptr[0] = &X0; X_ptr[1] = &X1; X_ptr[2] = &X2; X_ptr[3] = &X3; -#endif - skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */ - ts[0] = ctx->h.tweak[0]; - ts[1] = ctx->h.tweak[1]; - do { - /* - * this implementation only supports 2**64 input bytes - * (no carry out here) - */ - ts[0] += byte_cnt_add; /* 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, blk_ptr, WCNT); - debug_save_tweak(ctx); - skein_show_block(BLK_BITS, &ctx->h, ctx->x, blk_ptr, w, ks, ts); - - /* do the first full key injection */ - X0 = w[0] + ks[0]; - X1 = w[1] + ks[1] + ts[0]; - X2 = w[2] + ks[2] + ts[1]; - X3 = w[3] + ks[3]; - - /* show starting state values */ - skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL, - x_ptr); - - blk_ptr += SKEIN_256_BLOCK_BYTES; - - /* run the rounds */ - #define ROUND256(p0, p1, p2, p3, ROT, r_num) \ do { \ X##p0 += X##p1; \ @@ -159,10 +102,7 @@ do { \ ts[r + (R) + 2] = ts[r + (R) - 1]; \ skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ } while (0) - - for (r = 1; r < 2 * RCNT; r += 2 * SKEIN_UNROLL_256) #endif - { #define R256_8_ROUNDS(R) \ do { \ R256(0, 1, 2, 3, R_256_0, 8 * (R) + 1); \ @@ -177,57 +117,362 @@ do { \ I256(2 * (R) + 1); \ } while (0) - R256_8_ROUNDS(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 = 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; \ +} while (0) + +#if SKEIN_UNROLL_512 == 0 +#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) /* unrolled */ \ +do { \ + ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \ + skein_show_r_ptr(BLK_BITS, &ctx->h, r_num, X_ptr); \ +} while (0) + +#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; \ + skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ +} while (0) + +#else /* looping version */ +#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \ +do { \ + ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num); \ + skein_show_r_ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + r_num, X_ptr); \ +} while (0) + +#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]; \ + skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ +} 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 = 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; \ +} 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) \ +do { \ + 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, X_ptr); \ +} while (0) + +#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; \ + skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ +} 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) \ +do { \ + 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, X_ptr); \ +} while (0) + +#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]; \ + skein_show_r_ptr(BLK_BITSi, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ +} 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 + +/***************************** SKEIN_256 ******************************/ +#if !(SKEIN_USE_ASM & 256) +void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr, + size_t blk_cnt, size_t byte_cnt_add) +{ /* do it in C */ + enum { + WCNT = SKEIN_256_STATE_WORDS + }; + size_t r; +#if SKEIN_UNROLL_256 + /* key schedule: chaining vars + tweak + "rot"*/ + u64 kw[WCNT+4+RCNT*2]; +#else + /* key schedule words : chaining vars + tweak */ + u64 kw[WCNT+4]; +#endif + u64 X0, X1, X2, X3; /* local copy of context vars, for speed */ + u64 w[WCNT]; /* local copy of input block */ +#ifdef SKEIN_DEBUG + const u64 *X_ptr[4]; /* use for debugging (help cc put Xn in regs) */ + + X_ptr[0] = &X0; + X_ptr[1] = &X1; + X_ptr[2] = &X2; + X_ptr[3] = &X3; +#endif + skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */ + ts[0] = ctx->h.tweak[0]; + ts[1] = ctx->h.tweak[1]; + do { + /* + * this implementation only supports 2**64 input bytes + * (no carry out here) + */ + ts[0] += byte_cnt_add; /* 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, blk_ptr, WCNT); + debug_save_tweak(ctx); + skein_show_block(BLK_BITS, &ctx->h, ctx->x, blk_ptr, w, ks, ts); + + /* do the first full key injection */ + X0 = w[0] + ks[0]; + X1 = w[1] + ks[1] + ts[0]; + X2 = w[2] + ks[2] + ts[1]; + X3 = w[3] + ks[3]; + + /* show starting state values */ + skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL, + x_ptr); + + blk_ptr += SKEIN_256_BLOCK_BYTES; + + /* run the rounds */ + for (r = 1; + r < (SKEIN_UNROLL_256 ? 2 * RCNT : 2); + r += (SKEIN_UNROLL_256 ? 2 * SKEIN_UNROLL_256 : 1)) { + R256_8_ROUNDS(0); #if R256_UNROLL_R(1) - R256_8_ROUNDS(1); + R256_8_ROUNDS(1); #endif #if R256_UNROLL_R(2) - R256_8_ROUNDS(2); + R256_8_ROUNDS(2); #endif #if R256_UNROLL_R(3) - R256_8_ROUNDS(3); + R256_8_ROUNDS(3); #endif #if R256_UNROLL_R(4) - R256_8_ROUNDS(4); + R256_8_ROUNDS(4); #endif #if R256_UNROLL_R(5) - R256_8_ROUNDS(5); + R256_8_ROUNDS(5); #endif #if R256_UNROLL_R(6) - R256_8_ROUNDS(6); + R256_8_ROUNDS(6); #endif #if R256_UNROLL_R(7) - R256_8_ROUNDS(7); + R256_8_ROUNDS(7); #endif #if R256_UNROLL_R(8) - R256_8_ROUNDS(8); + R256_8_ROUNDS(8); #endif #if R256_UNROLL_R(9) - R256_8_ROUNDS(9); + R256_8_ROUNDS(9); #endif #if R256_UNROLL_R(10) - R256_8_ROUNDS(10); + R256_8_ROUNDS(10); #endif #if R256_UNROLL_R(11) - R256_8_ROUNDS(11); + R256_8_ROUNDS(11); #endif #if R256_UNROLL_R(12) - R256_8_ROUNDS(12); + R256_8_ROUNDS(12); #endif #if R256_UNROLL_R(13) - R256_8_ROUNDS(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" + R256_8_ROUNDS(14); #endif } /* do the final "feedforward" xor, update context chaining */ @@ -265,20 +510,8 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr, 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; +#if SKEIN_UNROLL_512 u64 kw[WCNT+4+RCNT*2]; /* key sched: chaining vars + tweak + "rot"*/ #else u64 kw[WCNT+4]; /* key schedule words : chaining vars + tweak */ @@ -288,8 +521,14 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr, #ifdef SKEIN_DEBUG const u64 *X_ptr[8]; /* use for debugging (help cc put Xn in regs) */ - X_ptr[0] = &X0; X_ptr[1] = &X1; X_ptr[2] = &X2; X_ptr[3] = &X3; - X_ptr[4] = &X4; X_ptr[5] = &X5; X_ptr[6] = &X6; X_ptr[7] = &X7; + X_ptr[0] = &X0; + X_ptr[1] = &X1; + X_ptr[2] = &X2; + X_ptr[3] = &X3; + X_ptr[4] = &X4; + X_ptr[5] = &X5; + X_ptr[6] = &X6; + X_ptr[7] = &X7; #endif skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */ @@ -322,104 +561,26 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr, skein_show_block(BLK_BITS, &ctx->h, ctx->x, blk_ptr, w, ks, ts); /* do the first full key injection */ - X0 = w[0] + ks[0]; - 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]; + X0 = w[0] + ks[0]; + 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]; blk_ptr += SKEIN_512_BLOCK_BYTES; skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL, X_ptr); /* run the rounds */ -#define ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \ -do { \ - 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; \ -} while (0) - -#if SKEIN_UNROLL_512 == 0 -#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) /* unrolled */ \ -do { \ - ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \ - skein_show_r_ptr(BLK_BITS, &ctx->h, r_num, X_ptr); \ -} while (0) - -#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; \ - skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ -} while (0) - -#else /* looping version */ -#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \ -do { \ - ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num); \ - skein_show_r_ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + r_num, X_ptr); \ -} while (0) - -#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]; \ - skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ -} while (0) - - 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 */ \ -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) + for (r = 1; + r < (SKEIN_UNROLL_512 ? 2 * RCNT : 2); + r += (SKEIN_UNROLL_512 ? 2 * SKEIN_UNROLL_512 : 1)) { 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 @@ -462,9 +623,6 @@ do { \ #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 */ @@ -505,20 +663,8 @@ void skein_1024_process_block(struct skein_1024_ctx *ctx, const u8 *blk_ptr, enum { WCNT = SKEIN_1024_STATE_WORDS }; -#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 size_t r; +#if (SKEIN_UNROLL_1024 != 0) u64 kw[WCNT+4+RCNT*2]; /* key sched: chaining vars + tweak + "rot" */ #else u64 kw[WCNT+4]; /* key schedule words : chaining vars + tweak */ @@ -609,131 +755,10 @@ void skein_1024_process_block(struct skein_1024_ctx *ctx, const u8 *blk_ptr, skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL, X_ptr); -#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 = 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; \ -} 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) \ -do { \ - 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, X_ptr); \ -} while (0) - -#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; \ - skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ -} 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) \ -do { \ - 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, X_ptr); \ -} while (0) - -#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]; \ - skein_show_r_ptr(BLK_BITSi, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \ -} while (0) - - for (r = 1; r <= 2 * RCNT; r += 2 * SKEIN_UNROLL_1024) -#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) - + for (r = 1; + r < (SKEIN_UNROLL_1024 ? 2 * RCNT : 2); + r += (SKEIN_UNROLL_1024 ? 2 * SKEIN_UNROLL_1024 : 1)) { R1024_8_ROUNDS(0); - -#define R1024_UNROLL_R(NN) \ - ((SKEIN_UNROLL_1024 == 0 && \ - SKEIN_1024_ROUNDS_TOTAL/8 > (NN)) || \ - (SKEIN_UNROLL_1024 > (NN))) - #if R1024_UNROLL_R(1) R1024_8_ROUNDS(1); #endif @@ -776,9 +801,6 @@ do { \ #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 */ |