shabal/shabal384.c

   1 /* shabal384.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    shabal384.c
  21  * \author  Daniel Otte
  22  * \email   daniel.otte@rub.de
  23  * \date    2009-04-27
  24  * \license GPLv3 or later
  25  *
  26  */
  27
  28 #include <stdint.h>
  29 #include "shabal.h"
  30 #include <avr/pgmspace.h>
  31 #include <string.h>
  32
  33 uint32_t shabal384_iv[] PROGMEM = {
  34         /* A */
  35         0xC8FCA331, 0xE55C504E, 0x003EBF26, 0xBB6B8D83,
  36         0x7B0448C1, 0x41B82789, 0x0A7C9601, 0x8D659CFF,
  37         0xB6E2673E, 0xCA54C77B, 0x1460FD7E, 0x3FCB8F2D,
  38         /* B */
  39         0x527291FC, 0x2A16455F, 0x78E627E5, 0x944F169F,
  40         0x1CA6F016, 0xA854EA25, 0x8DB98ABE, 0xF2C62641,
  41     0x30117DCB, 0xCF5C4309, 0x93711A25, 0xF9F671B8,
  42         0xB01D2116, 0x333F4B89, 0xB285D165, 0x86829B36,
  43         /* C */
  44         0xF764B11A, 0x76172146, 0xCEF6934D, 0xC6D28399,
  45         0xFE095F61, 0x5E6018B4, 0x5048ECF5, 0x51353261,
  46     0x6E6E36DC, 0x63130DAD, 0xA9C69BD6, 0x1E90EA0C,
  47         0x7C35073B, 0x28D95E6D, 0xAA340E0D, 0xCB3DEE70
  48 };
  49
  50 void shabal384_init(shabal_ctx_t* ctx){
  51         uint8_t i;
  52         ctx->b = ctx->b_buffer;
  53         ctx->c = ctx->c_buffer;
  54         ctx->w.w64 = 1LL;
  55         for(i=0;i<SHABAL_R;++i){
  56                 ctx->a[i] = pgm_read_dword(&(shabal384_iv[i]));
  57         }
  58         for(i=0;i<16;++i){
  59                 ctx->b[i] = pgm_read_dword(&(shabal384_iv[SHABAL_R+i]));
  60         }
  61         for(i=0;i<16;++i){
  62                 ctx->c[i] = pgm_read_dword(&(shabal384_iv[SHABAL_R+16+i]));
  63         }
  64 }
  65
  66 void shabal384_ctx2hash(void* dest, const shabal_ctx_t* ctx){
  67         shabal_ctx2hash(dest, ctx, 384);
  68 }
  69
  70 void shabal384(void* dest, void* msg, uint32_t length_b){
  71         shabal_ctx_t ctx;
  72         shabal384_init(&ctx);
  73         while(length_b>=SHABAL_BLOCKSIZE){
  74                 shabal_nextBlock(&ctx, msg);
  75                 msg = (uint8_t*)msg+SHABAL_BLOCKSIZE_B;
  76                 length_b -= SHABAL_BLOCKSIZE;
  77         }
  78         shabal_lastBlock(&ctx, msg, length_b);
  79         shabal384_ctx2hash(dest, &ctx);
  80 }