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EncryptionMode.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_ENCMODE_H 00022 #define SH_ENCMODE_H 00023 00024 #include <string> 00025 00026 class EncryptionMode { 00027 public: 00029 static const unsigned int IRep_size = 3 ; 00030 00032 enum IRep { 00033 ECB = 0, 00034 CBC = 1, 00035 OFB = 2, 00036 CFB = 3, 00037 NOFB = 4, 00038 NCFB = 5, 00039 CTR = 6, 00040 STREAM = 7 00041 } ; 00042 00046 EncryptionMode (void) ; 00047 EncryptionMode (IRep irep) ; 00052 EncryptionMode (std::string srep) ; 00053 00054 void setValue (IRep irep) ; 00055 00056 std::string getStringRep (void) const ; 00057 IRep getIntegerRep (void) const ; 00058 00059 bool operator== (const EncryptionMode& mode) const 00060 { return (Value == mode.Value) ; } ; 00061 00062 static bool isValidStringRep (std::string srep) ; 00063 static bool isValidIntegerRep (unsigned int irep) ; 00064 00065 static std::string translate (IRep irep) ; 00066 static IRep translate (std::string srep) ; 00067 00068 private: 00069 static const unsigned int NumValues = 8 ; 00070 IRep Value ; 00071 00072 typedef struct struct_Translation { 00073 IRep irep ; 00074 char* srep ; 00075 } Translation ; 00076 static const Translation Translations[] ; 00077 } ; 00078 00079 #endif // ndef SH_ENCMODE_H

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