--- /dev/null
+/* hfal-basic.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2009 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <avr/pgmspace.h>
+#include "hashfunction_descriptor.h"
+#include "hfal-basic.h"
+#include <stdlib.h>
+
+uint8_t hfal_hash_init(const hfdesc_t* hash_descriptor, hfgen_ctx_t* ctx){
+ hf_init_fpt f;
+ uint16_t tmp;
+ ctx->desc_ptr = (hfdesc_t*)hash_descriptor;
+ tmp = pgm_read_word(&(hash_descriptor->ctxsize_B));
+ if(!(ctx->ctx=malloc(tmp)))
+ return 3;
+ f= (hf_init_fpt)pgm_read_word(&(hash_descriptor->init));
+ f(ctx->ctx);
+ return 0;
+}
+
+void hfal_hash_nextBlock(hfgen_ctx_t* ctx, const void* block){
+ hf_nextBlock_fpt f;
+ hfdesc_t* x=(ctx->desc_ptr);
+ f =(hf_nextBlock_fpt)pgm_read_word(&(x->nextBlock));
+ f(ctx->ctx, block);
+}
+
+void hfal_hash_lastBlock(hfgen_ctx_t* ctx, const void* block, uint16_t length_b){
+ hf_lastBlock_fpt f;
+ hfdesc_t* x=ctx->desc_ptr;
+ f =(hf_lastBlock_fpt)pgm_read_word(&(x->lastBlock));
+ f(ctx->ctx, block, length_b);
+}
+
+void hfal_hash_ctx2hash(void* dest, hfgen_ctx_t* ctx){
+ hf_ctx2hash_fpt f;
+ hfdesc_t* x=ctx->desc_ptr;
+ f =(hf_ctx2hash_fpt)pgm_read_word(&(x->ctx2hash));
+ f(dest, ctx->ctx);
+}
+
+void hfal_hash_free(hfgen_ctx_t* ctx){
+ hf_free_fpt f;
+ hfdesc_t* x=ctx->desc_ptr;
+ f =(hf_free_fpt)pgm_read_word(&(x->free));
+ if(f)
+ f(ctx->ctx);
+ free(ctx->ctx);
+}
+
+void hfal_hash_mem(const hfdesc_t* hash_descriptor, void* dest, const void* msg, uint32_t length_b){
+ void_fpt f;
+ f = (void_fpt)pgm_read_word(&(hash_descriptor->mem));
+ if(f){
+ ((hf_mem_fpt)f)(dest, msg, length_b);
+ }else{
+ uint16_t bs,bsb;
+ uint8_t ctx[pgm_read_word(&(hash_descriptor->ctxsize_B))];
+ f=(void_fpt)(pgm_read_word(&(hash_descriptor->init)));
+ ((hf_init_fpt)f)(ctx);
+ bs=pgm_read_word(&(hash_descriptor->blocksize_b));
+ bsb=bs/8;
+ f=(void_fpt)(pgm_read_word(&(hash_descriptor->nextBlock)));
+ while(length_b>bs){
+ ((hf_nextBlock_fpt)f)(ctx, msg);
+ length_b -= bs;
+ msg = (uint8_t*)msg + bsb;
+ }
+ f=(void_fpt)(pgm_read_word(&(hash_descriptor->lastBlock)));
+ ((hf_lastBlock_fpt)f)(ctx, msg, length_b);
+ f=(void_fpt)(pgm_read_word(&(hash_descriptor->ctx2hash)));
+ ((hf_ctx2hash_fpt)f)(dest, ctx);
+ }
+}
+
+uint16_t hfal_hash_getBlocksize(const hfdesc_t* hash_descriptor){
+ uint16_t ret;
+ ret = pgm_read_word(&(hash_descriptor->blocksize_b));
+ return ret;
+}
+
+uint16_t hfal_hash_getHashsize(const hfdesc_t* hash_descriptor){
+ uint16_t ret;
+ ret = pgm_read_word(&(hash_descriptor->hashsize_b));
+ return ret;
+}