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introducing RSA-OAEP (can encrypt one message correctly)
[arm-crypto-lib.git] / shabal / shabal192.c
1 /* shabal192.c */
2 /*
3     This file is part of the ARM-Crypto-Lib.
4     Copyright (C) 2006-2010  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    shabal192.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 <string.h>
31
32 const uint32_t shabal192_iv[] = {
33         /* A */
34         0xFD749ED4, 0xB798E530, 0x33904B6F, 0x46BDA85E,
35         0x076934B4, 0x454B4058, 0x77F74527, 0xFB4CF465,
36     0x62931DA9, 0xE778C8DB, 0x22B3998E, 0xAC15CFB9,
37         /* B */
38         0x58BCBAC4, 0xEC47A08E, 0xAEE933B2, 0xDFCBC824,
39         0xA7944804, 0xBF65BDB0, 0x5A9D4502, 0x59979AF7,
40     0xC5CEA54E, 0x4B6B8150, 0x16E71909, 0x7D632319,
41         0x930573A0, 0xF34C63D1, 0xCAF914B4, 0xFDD6612C,
42         /* C */
43         0x61550878, 0x89EF2B75, 0xA1660C46, 0x7EF3855B,
44         0x7297B58C, 0x1BC67793, 0x7FB1C723, 0xB66FC640,
45     0x1A48B71C, 0xF0976D17, 0x088CE80A, 0xA454EDF3,
46         0x1C096BF4, 0xAC76224B, 0x5215781C, 0xCD5D2669
47 };
48
49 void shabal192_init(shabal_ctx_t* ctx){
50         uint8_t i;
51         ctx->b = ctx->b_buffer;
52         ctx->c = ctx->c_buffer;
53         ctx->w.w64 = 1LL;
54         for(i=0;i<SHABAL_R;++i){
55                 ctx->a[i] = shabal192_iv[i];
56         }
57         for(i=0;i<16;++i){
58                 ctx->b[i] = shabal192_iv[SHABAL_R+i];
59         }
60         for(i=0;i<16;++i){
61                 ctx->c[i] = shabal192_iv[SHABAL_R+16+i];
62         }
63 }
64
65 void shabal192_ctx2hash(void* dest, const shabal_ctx_t* ctx){
66         shabal_ctx2hash(dest, ctx, 192);
67 }
68
69 void shabal192(void* dest, void* msg, uint32_t length_b){
70         shabal_ctx_t ctx;
71         shabal192_init(&ctx);
72         while(length_b>=SHABAL_BLOCKSIZE){
73                 shabal_nextBlock(&ctx, msg);
74                 msg = (uint8_t*)msg+SHABAL_BLOCKSIZE_B;
75                 length_b -= SHABAL_BLOCKSIZE;
76         }
77         shabal_lastBlock(&ctx, msg, length_b);
78         shabal192_ctx2hash(dest, &ctx);
79 }