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skein.c
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skein.h
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skein_block.c
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skein_debug.c
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skein_debug.h
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skein_freebsd.h
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skein_iv.h
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skein_port.h
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Editing: skein_block.c
/*********************************************************************** ** ** 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] ** ************************************************************************/ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/endian.h> #include <sys/types.h> #ifdef _KERNEL #include <sys/systm.h> #else #include <string.h> #endif #include "skein.h" #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 DebugSaveTweak(ctx) { ctx->h.T[0] = ts[0]; ctx->h.T[1] = ts[1]; } #else #define DebugSaveTweak(ctx) #endif /*****************************************************************/ /* functions to process blkCnt (nonzero) full block(s) of data. */ void Skein_256_Process_Block(Skein_256_Ctxt_t *ctx,const u08b_t *blkPtr,size_t blkCnt,size_t byteCntAdd); void Skein_512_Process_Block(Skein_512_Ctxt_t *ctx,const u08b_t *blkPtr,size_t blkCnt,size_t byteCntAdd); void Skein1024_Process_Block(Skein1024_Ctxt_t *ctx,const u08b_t *blkPtr,size_t blkCnt,size_t byteCntAdd); /***************************** Skein_256 ******************************/ #if !(SKEIN_USE_ASM & 256) void Skein_256_Process_Block(Skein_256_Ctxt_t *ctx,const u08b_t *blkPtr,size_t blkCnt,size_t byteCntAdd) { /* 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 #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; u64b_t kw[WCNT+4+RCNT*2]; /* key schedule words : chaining vars + tweak + "rotation"*/ #else u64b_t kw[WCNT+4]; /* key schedule words : chaining vars + tweak */ #endif u64b_t X0,X1,X2,X3; /* local copy of context vars, for speed */ u64b_t w [WCNT]; /* local copy of input block */ #ifdef SKEIN_DEBUG const u64b_t *Xptr[4]; /* use for debugging (help compiler put Xn in registers) */ 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]; Skein_Get64_LSB_First(w,blkPtr,WCNT); /* get input block in little-endian format */ 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); for (r=1;r < 2*RCNT;r+=2*SKEIN_UNROLL_256) /* loop thru it */ #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 ((u08b_t *) Skein_256_Process_Block_CodeSize) - ((u08b_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 u08b_t *blkPtr,size_t blkCnt,size_t byteCntAdd) { /* do it in C */ 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; u64b_t kw[WCNT+4+RCNT*2]; /* key schedule words : chaining vars + tweak + "rotation"*/ #else u64b_t kw[WCNT+4]; /* key schedule words : chaining vars + tweak */ #endif u64b_t X0,X1,X2,X3,X4,X5,X6,X7; /* local copy of vars, for speed */ u64b_t w [WCNT]; /* local copy of input block */ #ifdef SKEIN_DEBUG const u64b_t *Xptr[8]; /* use for debugging (help compiler put Xn in registers) */ 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]; Skein_Get64_LSB_First(w,blkPtr,WCNT); /* get input block in little-endian format */ 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); for (r=1;r < 2*RCNT;r+=2*SKEIN_UNROLL_512) /* loop thru it */ #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 ((u08b_t *) Skein_512_Process_Block_CodeSize) - ((u08b_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 u08b_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; u64b_t kw[WCNT+4+RCNT*2]; /* key schedule words : chaining vars + tweak + "rotation"*/ #else u64b_t kw[WCNT+4]; /* key schedule words : chaining vars + tweak */ #endif u64b_t X00,X01,X02,X03,X04,X05,X06,X07, /* local copy of vars, for speed */ X08,X09,X10,X11,X12,X13,X14,X15; u64b_t w [WCNT]; /* local copy of input block */ #ifdef SKEIN_DEBUG const u64b_t *Xptr[16]; /* use for debugging (help compiler put Xn in registers) */ 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]; Skein_Get64_LSB_First(w,blkPtr,WCNT); /* get input block in little-endian format */ 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); for (r=1;r <= 2*RCNT;r+=2*SKEIN_UNROLL_1024) /* loop thru it */ #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 ((u08b_t *) Skein1024_Process_Block_CodeSize) - ((u08b_t *) Skein1024_Process_Block); } uint_t Skein1024_Unroll_Cnt(void) { return SKEIN_UNROLL_1024; } #endif #endif
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