hfal-nessie.c

   1 /* hfal-nessie.c */
   2 /*
   3     This file is part of the AVR-Crypto-Lib.
   4     Copyright (C) 2009  Daniel Otte (daniel.otte@rub.de)
   5
   6     This program is free software: you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation, either version 3 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19 /*
  20  * \file    hfal-nessie.c
  21  * \author  Daniel Otte
  22  * \email   daniel.otte@rub.de
  23  * \date    2009-05-10
  24  * \license GPLv3 or later
  25  *
  26  */
  27
  28 #include "nessie_hash_test.h"
  29 #include "hashfunction_descriptor.h"
  30 #include <stdint.h>
  31 #include <avr/pgmspace.h>
  32
  33 void hfal_nessie(const hfdesc_t* hd){
  34         if(pgm_read_byte(&(hd->type))!=HFDESC_TYPE_HASHFUNCTION)
  35                 return;
  36         char name[1+strlen_P((void*)pgm_read_word(&(hd->name)))];
  37         strcpy_P(name, (void*)pgm_read_word(&(hd->name)));
  38
  39         nessie_hash_ctx.hashsize_b  = pgm_read_word(&(hd->hashsize_b));
  40         nessie_hash_ctx.name = name;
  41         nessie_hash_ctx.blocksize_B = pgm_read_word(&(hd->blocksize_b))/8;
  42         nessie_hash_ctx.ctx_size_B  = pgm_read_word(&(hd->ctxsize_B));
  43         nessie_hash_ctx.hash_init = (nessie_hash_init_fpt)pgm_read_word(&(hd->init));
  44         nessie_hash_ctx.hash_next = (nessie_hash_next_fpt)pgm_read_word(&(hd->nextBlock));
  45         nessie_hash_ctx.hash_last = (nessie_hash_last_fpt)pgm_read_word(&(hd->lastBlock));
  46         nessie_hash_ctx.hash_conv = (nessie_hash_conv_fpt)pgm_read_word(&(hd->ctx2hash));
  47
  48         nessie_hash_run();
  49 }
  50
  51 void hfal_nessie_multiple(const hfdesc_t** hd_list){
  52         const hfdesc_t* hd;
  53         for(;;){
  54                 hd = (void*)pgm_read_word(hd_list);
  55                 if(!hd)
  56                         return;
  57                 hfal_nessie(hd);
  58                 hd_list = (void*)((uint8_t*)hd_list + 2);
  59         }
  60 }
  61