118 lines
2.2 KiB
C
118 lines
2.2 KiB
C
/**
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* \file mtprng.h
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*
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* Mersenne twister pseudo-random number generator, header.
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*/
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/*
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* Copyright (c) 1998, 1999, 2000 Virtual Unlimited B.V.
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*
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* Author: Bob Deblier <bob@virtualunlimited.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef _MTPRNG_H
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#define _MTPRNG_H
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#include "beecrypt.h"
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#if WIN32
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# include <windows.h>
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# include <winbase.h>
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#else
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# if HAVE_SYNCH_H
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# include <synch.h>
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# elif HAVE_PTHREAD_H
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# include <pthread.h>
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# else
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# error need locking mechanism
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# endif
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#endif
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#define N 624
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#define M 397
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#define K 0x9908B0DF
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/**
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*/
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typedef struct
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{
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#ifdef _REENTRANT
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# if WIN32
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HANDLE lock;
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# else
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# if HAVE_SYNCH_H
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mutex_t lock;
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# elif HAVE_PTHREAD_H
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pthread_mutex_t lock;
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# else
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# error need locking mechanism
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# endif
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# endif
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#endif
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uint32 state[N+1];
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uint32 left;
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/*@kept@*/ uint32* nextw;
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} mtprngParam;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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*/
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/*@observer@*/ /*@checked@*/
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extern BEECRYPTAPI const randomGenerator mtprng;
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/**
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*/
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/*@-exportlocal@*/
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BEECRYPTAPI
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int mtprngSetup (mtprngParam* mp)
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/*@modifies mp @*/;
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/*@=exportlocal@*/
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/**
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*/
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/*@-exportlocal@*/
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BEECRYPTAPI
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int mtprngSeed (mtprngParam* mp, const uint32* data, int size)
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/*@modifies mp @*/;
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/*@=exportlocal@*/
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/**
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*/
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/*@-exportlocal@*/
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BEECRYPTAPI
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int mtprngNext (mtprngParam* mp, uint32* data, int size)
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/*@modifies mp, data @*/;
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/*@=exportlocal@*/
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/**
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*/
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/*@-exportlocal@*/
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BEECRYPTAPI
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int mtprngCleanup(mtprngParam* mp)
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/*@modifies mp @*/;
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/*@=exportlocal@*/
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#ifdef __cplusplus
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}
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#endif
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#endif
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