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include/beecrypt/mtprng.h

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00001 /*
00002  * Copyright (c) 1998, 1999, 2000, 2003 X-Way Rights BV
00003  *
00004  * This library is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Lesser General Public
00006  * License as published by the Free Software Foundation; either
00007  * version 2.1 of the License, or (at your option) any later version.
00008  *
00009  * This library is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Lesser General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public
00015  * License along with this library; if not, write to the Free Software
00016  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00017  *
00018  */
00019 
00026 #ifndef _MTPRNG_H
00027 #define _MTPRNG_H
00028 
00029 #include "beecrypt/beecrypt.h"
00030 
00031 #ifdef _REENTRANT
00032 # if WIN32
00033 #  include <windows.h>
00034 #  include <winbase.h>
00035 # endif
00036 #endif
00037 
00038 #define N   624
00039 #define M   397
00040 #define K   0x9908B0DFU
00041 
00042 /*
00043  */
00044 #ifdef __cplusplus
00045 struct BEECRYPTAPI mtprngParam
00046 #else
00047 struct _mtprngParam
00048 #endif
00049 {
00050     #ifdef _REENTRANT
00051     bc_mutex_t  lock;
00052     #endif
00053     uint32_t    state[N+1];
00054     uint32_t    left;
00055     uint32_t*   nextw;
00056 };
00057 
00058 #ifndef __cplusplus
00059 typedef struct _mtprngParam mtprngParam;
00060 #endif
00061 
00062 #ifdef __cplusplus
00063 extern "C" {
00064 #endif
00065 
00066 /*
00067  */
00068 extern BEECRYPTAPI const randomGenerator mtprng;
00069 
00070 /*
00071  */
00072 BEECRYPTAPI
00073 int mtprngSetup  (mtprngParam* mp);
00074 
00075 /*
00076  */
00077 BEECRYPTAPI
00078 int mtprngSeed   (mtprngParam* mp, const byte* data, size_t size);
00079 
00080 /*
00081  */
00082 BEECRYPTAPI
00083 int mtprngNext   (mtprngParam* mp, byte* data, size_t size);
00084 
00085 /*
00086  */
00087 BEECRYPTAPI
00088 int mtprngCleanup(mtprngParam* mp);
00089 
00090 #ifdef __cplusplus
00091 }
00092 #endif
00093 
00094 #endif

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