hc128.h

00001 /* hc128.h
00002  *
00003  * Copyright (C) 2006-2009 Sawtooth Consulting Ltd.
00004  *
00005  * This file is part of CyaSSL.
00006  *
00007  * CyaSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * CyaSSL is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
00020  */
00021 
00022 
00023 #ifndef NO_HC128
00024 
00025 #ifndef CTAO_CRYPT_HC128_H
00026 #define CTAO_CRYPT_HC128_H
00027 
00028 #include "types.h"
00029 
00030 #ifdef __cplusplus
00031     extern "C" {
00032 #endif
00033 
00034 
00035 
00036 /* HC-128 stream cipher */
00037 typedef struct HC128 {
00038     word32 T[1024];             /* P[i] = T[i];  Q[i] = T[1024 + i ]; */
00039     word32 X[16];
00040     word32 Y[16];
00041     word32 counter1024;         /* counter1024 = i mod 1024 at the ith step */
00042     word32 key[8];
00043     word32 iv[8];
00044 } HC128;
00045 
00046 
00047 void Hc128_Process(HC128*, byte*, const byte*, word32);
00048 void Hc128_SetKey(HC128*, const byte* key, const byte* iv);
00049 
00050 
00051 #ifdef __cplusplus
00052     } /* extern "C" */
00053 #endif
00054 
00055 #endif /* CTAO_CRYPT_HC128_H */
00056 
00057 #endif /* NO_HC128 */