116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
/* jh_simple_speed.c */
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/*
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This file is part of the AVR-Crypto-Lib.
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Copyright (C) 2006-2015 Daniel Otte (bg@nerilex.org)
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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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#include <stdint.h>
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#include <avr/pgmspace.h>
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#include <stdlib.h>
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#include <string.h>
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#include "memxor.h"
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#include "jh_simple.h"
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#define DEBUG 0
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#if DEBUG
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#include "cli.h"
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#endif
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void jh_encrypt(uint8_t *a);
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void jh_init(uint16_t hashlen_b, jh_ctx_t *ctx){
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memset(ctx->a, 0, 128);
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ctx->a[0] = hashlen_b>>8;
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ctx->a[1] = hashlen_b&0xff;
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jh_encrypt(ctx->a);
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ctx->block_hashed=0;
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}
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void jh_nextBlock(jh_ctx_t *ctx, void *block){
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memxor(ctx->a, block, 64);
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jh_encrypt(ctx->a);
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memxor(ctx->a+64, block, 64);
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ctx->block_hashed++;
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}
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void jh_lastBlock(jh_ctx_t *ctx, void *block, uint16_t length_b){
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while(length_b>=64*8){
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jh_nextBlock(ctx, block);
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block = (uint8_t*)block + 64;
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length_b -= 64*8;
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}
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uint8_t buffer[64];
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uint64_t total_length;
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memset(buffer, 0, 64);
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memcpy(buffer, block, (length_b+7)/8);
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buffer[length_b/8] |= 0x80>>(length_b%8);
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total_length=ctx->block_hashed*512+length_b;
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if(length_b==0){
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}else{
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jh_nextBlock(ctx, buffer);
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buffer[0]=0;
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}
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memset(buffer+1, 0, 64-8-1);
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buffer[63] = total_length&0xff;
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buffer[62] = (total_length>> 8)&0xff;
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buffer[61] = (total_length>>16)&0xff;
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buffer[60] = (total_length>>24)&0xff;
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buffer[59] = (total_length>>32)&0xff;
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buffer[58] = (total_length>>40)&0xff;
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buffer[57] = (total_length>>48)&0xff;
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buffer[56] = (total_length>>56)&0xff;
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jh_nextBlock(ctx, buffer);
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}
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void jh_ctx2hash(void *dest, uint16_t length_b, jh_ctx_t *ctx){
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memcpy(dest, ctx->a+128-(length_b+7)/8, (length_b+7)/8);
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}
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void jh224_init(jh_ctx_t *ctx){
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jh_init(224, ctx);
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}
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void jh224_ctx2hash(void *dest, jh_ctx_t *ctx){
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jh_ctx2hash(dest, 224, ctx);
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}
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void jh256_init(jh_ctx_t *ctx){
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jh_init(256, ctx);
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}
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void jh256_ctx2hash(void *dest, jh_ctx_t *ctx){
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jh_ctx2hash(dest, 256, ctx);
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}
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void jh384_init(jh_ctx_t *ctx){
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jh_init(384, ctx);
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}
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void jh384_ctx2hash(void *dest, jh_ctx_t *ctx){
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jh_ctx2hash(dest, 384, ctx);
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}
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void jh512_init(jh_ctx_t *ctx){
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jh_init(512, ctx);
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}
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void jh512_ctx2hash(void *dest, jh_ctx_t *ctx){
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jh_ctx2hash(dest, 512, ctx);
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}
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