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# beecrypt/mtprng.h

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    00001
    00007 /*
    00008  * Copyright (c) 1998, 1999, 2000 Virtual Unlimited B.V.
    00009  *
    00010  * Author: Bob Deblier <bob@virtualunlimited.com>
    00011  *
    00012  * This library is free software; you can redistribute it and/or
    00013  * modify it under the terms of the GNU Lesser General Public
    00014  * License as published by the Free Software Foundation; either
    00015  * version 2.1 of the License, or (at your option) any later version.
    00016  *
    00017  * This library is distributed in the hope that it will be useful,
    00018  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00019  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00020  * Lesser General Public License for more details.
    00021  *
    00022  * You should have received a copy of the GNU Lesser General Public
    00023  * License along with this library; if not, write to the Free Software
    00024  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    00025  *
    00026  */
    00027
    00028 #ifndef _MTPRNG_H
    00029 #define _MTPRNG_H
    00030
    00031 #include "beecrypt.h"
    00032
    00033 #if WIN32
    00034 # include <windows.h>
    00035 # include <winbase.h>
    00036 #else
    00037 # if HAVE_THREAD_H && HAVE_SYNCH_H
    00038 #  include <synch.h>
    00039 # elif HAVE_PTHREAD_H
    00040 #  include <pthread.h>
    00041 # else
    00042 #  error need locking mechanism
    00043 # endif
    00044 #endif
    00045
    00046 #define N       624
    00047 #define M       397
    00048 #define K       0x9908B0DF
    00049
    00052 typedef struct
    00053 {
    00054         #ifdef _REENTRANT
    00055         # if WIN32
    00056         HANDLE                  lock;
    00057         # else
    00058         # if HAVE_THREAD_H && HAVE_SYNCH_H
    00059         mutex_t                 lock;
    00060         #  elif HAVE_PTHREAD_H
    00061         pthread_mutex_t lock;
    00062         #  else
    00063         #   error need locking mechanism
    00064         #  endif
    00065         # endif
    00066         #endif
    00067         uint32  state[N+1];
    00068         uint32  left;
    00069 /*@kept@*/ uint32*      nextw;
    00070 } mtprngParam;
    00071
    00072 #ifdef __cplusplus
    00073 extern "C" {
    00074 #endif
    00075
    00078 /*@observer@*/ /*@checked@*/
    00079 extern BEECRYPTAPI const randomGenerator mtprng;
    00080
    00083 /*@-exportlocal@*/
    00084 BEECRYPTAPI
    00085 int mtprngSetup  (mtprngParam* mp)
    00086         /*@modifies mp @*/;
    00087 /*@=exportlocal@*/
    00088
    00091 /*@-exportlocal@*/
    00092 BEECRYPTAPI
    00093 int mtprngSeed   (mtprngParam* mp, const uint32* data, int size)
    00094         /*@modifies mp @*/;
    00095 /*@=exportlocal@*/
    00096
    00099 /*@-exportlocal@*/
    00100 BEECRYPTAPI
    00101 int mtprngNext   (mtprngParam* mp, uint32* data, int size)
    00102         /*@modifies mp, data @*/;
    00103 /*@=exportlocal@*/
    00104
    00107 /*@-exportlocal@*/
    00108 BEECRYPTAPI
    00109 int mtprngCleanup(mtprngParam* mp)
    00110         /*@modifies mp @*/;
    00111 /*@=exportlocal@*/
    00112
    00113 #ifdef __cplusplus
    00114 }
    00115 #endif
    00116
    00117 #endif