shabal/shabal192.c

   1 /* shabal192.c */
   2 /*
   3     This file is part of the AVR-Crypto-Lib.
   4     Copyright (C) 2006-2015 Daniel Otte (bg@nerilex.org)
   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    shabal192.c
  21  * \author  Daniel Otte
  22  * \email   bg@nerilex.org
  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 const uint32_t shabal192_iv[] PROGMEM = {
  34         /* A */
  35         0xFD749ED4, 0xB798E530, 0x33904B6F, 0x46BDA85E,
  36         0x076934B4, 0x454B4058, 0x77F74527, 0xFB4CF465,
  37     0x62931DA9, 0xE778C8DB, 0x22B3998E, 0xAC15CFB9,
  38         /* B */
  39         0x58BCBAC4, 0xEC47A08E, 0xAEE933B2, 0xDFCBC824,
  40         0xA7944804, 0xBF65BDB0, 0x5A9D4502, 0x59979AF7,
  41     0xC5CEA54E, 0x4B6B8150, 0x16E71909, 0x7D632319,
  42         0x930573A0, 0xF34C63D1, 0xCAF914B4, 0xFDD6612C,
  43         /* C */
  44         0x61550878, 0x89EF2B75, 0xA1660C46, 0x7EF3855B,
  45         0x7297B58C, 0x1BC67793, 0x7FB1C723, 0xB66FC640,
  46     0x1A48B71C, 0xF0976D17, 0x088CE80A, 0xA454EDF3,
  47         0x1C096BF4, 0xAC76224B, 0x5215781C, 0xCD5D2669
  48 };
  49
  50 void shabal192_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(&(shabal192_iv[i]));
  57         }
  58         for(i=0;i<16;++i){
  59                 ctx->b[i] = pgm_read_dword(&(shabal192_iv[SHABAL_R+i]));
  60         }
  61         for(i=0;i<16;++i){
  62                 ctx->c[i] = pgm_read_dword(&(shabal192_iv[SHABAL_R+16+i]));
  63         }
  64 }
  65
  66 void shabal192_ctx2hash(void *dest, const shabal_ctx_t *ctx){
  67         shabal_ctx2hash(dest, ctx, 192);
  68 }
  69
  70 void shabal192(void *dest, void *msg, uint32_t length_b){
  71         shabal_ctx_t ctx;
  72         shabal192_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         shabal192_ctx2hash(dest, &ctx);
  80 }