264 lines
6.7 KiB
C
264 lines
6.7 KiB
C
/* blake_large.c */
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/*
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This file is part of the ARM-Crypto-Lib.
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Copyright (C) 2006-2010 Daniel Otte (daniel.otte@rub.de)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* \file blake_large.c
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* \author Daniel Otte
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* \email daniel.otte@rub.de
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* \date 2009-05-08
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* \license GPLv3 or later
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*
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*/
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#include <stdint.h>
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#include <string.h>
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#include "memxor.h"
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#include "blake_large.h"
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#include "blake_common.h"
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static const
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uint64_t blake_c[] = {
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0x243F6A8885A308D3LL, 0x13198A2E03707344LL,
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0xA4093822299F31D0LL, 0x082EFA98EC4E6C89LL,
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0x452821E638D01377LL, 0xBE5466CF34E90C6CLL,
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0xC0AC29B7C97C50DDLL, 0x3F84D5B5B5470917LL,
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0x9216D5D98979FB1BLL, 0xD1310BA698DFB5ACLL,
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0x2FFD72DBD01ADFB7LL, 0xB8E1AFED6A267E96LL,
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0xBA7C9045F12C7F99LL, 0x24A19947B3916CF7LL,
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0x0801F2E2858EFC16LL, 0x636920D871574E69LL
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};
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#define ROTL64(a, n) (((a)<<(n))|((a)>>(64-(n))))
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#define ROTR64(a, n) (((a)>>(n))|((a)<<(64-(n))))
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#define CHANGE_ENDIAN32(a) (((a)<<24)| \
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((0x0000ff00&(a))<<8)| \
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((0x00ff0000&(a))>>8)| \
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(a)>>24 )
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static
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void blake_large_expand(uint64_t* v, const blake_large_ctx_t* ctx){
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uint8_t i;
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memcpy(v, ctx->h, 8*8);
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for(i=0; i<8; ++i){
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v[8+i] = blake_c[i];
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}
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memxor((uint8_t*)v+8, ctx->s, 4*8);
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}
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static
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void blake_large_changeendian(void* dest, const void* src){
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uint8_t i;
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uint32_t tmp;
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for(i=0; i<32; i+=2){
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tmp = CHANGE_ENDIAN32(((uint32_t*)src)[i]);
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((uint32_t*)dest)[i] = CHANGE_ENDIAN32(((uint32_t*)src)[i+1]);
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((uint32_t*)dest)[i+1] = tmp;
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}
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}
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#define A (v[idx.v8[0]])
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#define B (v[idx.v8[1]])
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#define C (v[idx.v8[2]])
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#define D (v[idx.v8[3]])
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static
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void blake_large_compress(uint64_t* v,const void* m){
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uint8_t r,i;
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uint16_t s, *p=(uint16_t*)blake_sigma;
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union {
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uint32_t v32;
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uint8_t v8[4];
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}idx;
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for(r=0; r<16; ++r){
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for(i=0; i<8; ++i){
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idx.v32 = ((uint32_t*)blake_index_lut)[i];
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s = *p++;
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if(p==(uint16_t*)(blake_sigma + 160)){
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p=(uint16_t*)blake_sigma;
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}
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A += B + (((uint64_t*)m)[s&0xff] ^ blake_c[s>>8]);
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D = ROTR64(D^A, 32);
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C += D;
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B = ROTR64(B^C, 25);
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A += B + (((uint64_t*)m)[s>>8] ^ blake_c[s&0xff]);
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D = ROTR64(D^A, 16);
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C += D;
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B = ROTR64(B^C, 11);
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}
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}
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}
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static
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void blake_large_collapse(blake_large_ctx_t* ctx, uint64_t* v){
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uint8_t i;
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for(i=0; i<8; ++i){
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ctx->h[i] ^= ctx->s[i%4] ^ v[i] ^ v[8+i];
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}
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}
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void blake_large_nextBlock(blake_large_ctx_t* ctx, const void* msg){
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uint64_t v[16];
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uint64_t m[16];
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union {
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uint64_t v64;
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uint32_t v32[2];
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}ctr;
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blake_large_expand(v,ctx);
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ctx->counter++;
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ctr.v64 = ctx->counter*1024;
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v[12] ^= ctr.v64;
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v[13] ^= ctr.v64;
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blake_large_changeendian(m, msg);
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blake_large_compress(v, m);
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blake_large_collapse(ctx, v);
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}
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void blake_large_lastBlock(blake_large_ctx_t* ctx, const void* msg, uint16_t length_b){
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while(length_b>=BLAKE_LARGE_BLOCKSIZE){
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blake_large_nextBlock(ctx, msg);
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msg = (uint8_t*)msg + BLAKE_LARGE_BLOCKSIZE_B;
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length_b -= BLAKE_LARGE_BLOCKSIZE;
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}
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union {
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uint8_t v8[128];
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uint64_t v64[ 16];
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} buffer;
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uint64_t v[16];
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uint64_t ctr;
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ctr = ctx->counter*1024+length_b;
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memset(buffer.v8, 0, 128);
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memcpy(buffer.v8, msg, (length_b+7)/8);
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buffer.v8[length_b/8] |= 0x80 >> (length_b&0x7);
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blake_large_changeendian(buffer.v8, buffer.v8);
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blake_large_expand(v, ctx);
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if(length_b>1024-128-2){
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v[12] ^= ctr;
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v[13] ^= ctr;
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blake_large_compress(v, buffer.v8);
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blake_large_collapse(ctx, v);
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memset(buffer.v8, 0, 128-8);
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blake_large_expand(v, ctx);
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} else {
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if(length_b){
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v[12] ^= ctr;
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v[13] ^= ctr;
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}
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}
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if(ctx->appendone)
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buffer.v8[128-16-8] |= 0x01;
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buffer.v64[15] = ctr;
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blake_large_compress(v, buffer.v8);
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blake_large_collapse(ctx, v);
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}
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static const
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uint64_t blake512_iv[] = {
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0x6A09E667F3BCC908LL, 0xBB67AE8584CAA73BLL,
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0x3C6EF372FE94F82BLL, 0xA54FF53A5F1D36F1LL,
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0x510E527FADE682D1LL, 0x9B05688C2B3E6C1FLL,
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0x1F83D9ABFB41BD6BLL, 0x5BE0CD19137E2179LL
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};
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void blake512_init(blake512_ctx_t* ctx){
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uint8_t i;
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for(i=0; i<8; ++i){
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ctx->h[i] = blake512_iv[i];
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}
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memset(ctx->s, 0, 4*8);
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ctx->counter = 0;
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ctx->appendone = 1;
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}
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static const
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uint64_t blake384_iv[] = {
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0xCBBB9D5DC1059ED8LL, 0x629A292A367CD507LL,
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0x9159015A3070DD17LL, 0x152FECD8F70E5939LL,
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0x67332667FFC00B31LL, 0x8EB44A8768581511LL,
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0xDB0C2E0D64F98FA7LL, 0x47B5481DBEFA4FA4LL
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};
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void blake384_init(blake384_ctx_t* ctx){
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uint8_t i;
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for(i=0; i<8; ++i){
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ctx->h[i] = blake384_iv[i];
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}
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memset(ctx->s, 0, 4*8);
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ctx->counter = 0;
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ctx->appendone = 0;
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}
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void blake512_ctx2hash(void* dest, const blake512_ctx_t* ctx){
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uint8_t i;
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for(i=0; i<8; ++i){
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((uint32_t*)dest)[2*i+0] = CHANGE_ENDIAN32((ctx->h[i])>>32);
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((uint32_t*)dest)[2*i+1] = CHANGE_ENDIAN32((uint32_t)ctx->h[i]);
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}
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}
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void blake384_ctx2hash(void* dest, const blake384_ctx_t* ctx){
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uint8_t i;
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for(i=0; i<6; ++i){
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((uint32_t*)dest)[2*i+0] = CHANGE_ENDIAN32((ctx->h[i])>>32);
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((uint32_t*)dest)[2*i+1] = CHANGE_ENDIAN32((uint32_t)ctx->h[i]);
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}
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}
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void blake512_nextBlock(blake512_ctx_t* ctx, const void* block){
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blake_large_nextBlock(ctx, block);
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}
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void blake384_nextBlock(blake384_ctx_t* ctx, const void* block){
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blake_large_nextBlock(ctx, block);
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}
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void blake512_lastBlock(blake512_ctx_t* ctx, const void* block, uint16_t length_b){
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blake_large_lastBlock(ctx, block, length_b);
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}
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void blake384_lastBlock(blake384_ctx_t* ctx, const void* block, uint16_t length_b){
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blake_large_lastBlock(ctx, block, length_b);
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}
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void blake512(void* dest, const void* msg, uint32_t length_b){
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blake_large_ctx_t ctx;
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blake512_init(&ctx);
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while(length_b>=BLAKE_LARGE_BLOCKSIZE){
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blake_large_nextBlock(&ctx, msg);
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msg = (uint8_t*)msg + BLAKE_LARGE_BLOCKSIZE_B;
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length_b -= BLAKE_LARGE_BLOCKSIZE;
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}
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blake_large_lastBlock(&ctx, msg, length_b);
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blake512_ctx2hash(dest, &ctx);
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}
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void blake384(void* dest, const void* msg, uint32_t length_b){
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blake_large_ctx_t ctx;
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blake384_init(&ctx);
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while(length_b>=BLAKE_LARGE_BLOCKSIZE){
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blake_large_nextBlock(&ctx, msg);
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msg = (uint8_t*)msg + BLAKE_LARGE_BLOCKSIZE_B;
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length_b -= BLAKE_LARGE_BLOCKSIZE;
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}
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blake_large_lastBlock(&ctx, msg, length_b);
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blake384_ctx2hash(dest, &ctx);
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}
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