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RandomSource.h

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00001 /* 00002 * steghide 0.5.1 - a steganography program 00003 * Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at> 00004 * 00005 * This program is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU General Public License 00007 * as published by the Free Software Foundation; either version 2 00008 * of the License, or (at your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with this program; if not, write to the Free Software 00017 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00018 * 00019 */ 00020 00021 #ifndef SH_RANDOMSOURCE_H 00022 #define SH_RANDOMSOURCE_H 00023 00024 #include <cstdio> 00025 #include <vector> 00026 00027 class BitString ; 00028 00033 class RandomSource { 00034 public: 00035 RandomSource (void) ; 00036 ~RandomSource (void) ; 00037 00042 BYTE getByte (void) ; 00043 00049 std::vector<BYTE> getBytes (unsigned int n) ; 00050 00056 BitString getBits (unsigned int n) ; 00057 00062 bool getBool (void) ; 00063 00069 unsigned long getValue (unsigned long n) ; 00070 00071 private: 00072 unsigned int RandomBytePos ; 00073 BYTE RandomByte ; 00078 FILE *RandomInput ; 00079 } ; 00080 00081 #endif // ndef SH_RANDOMSOURCE_H

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