EncryptionAlgorithm.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_ENCALGO_H
00022 #define SH_ENCALGO_H
00023 
00024 #include <string>
00025 
00026 class EncryptionAlgorithm {
00027         public:
00029         static const unsigned int IRep_size = 5 ;
00030 
00032         enum IRep {
00033                 NONE = 0,
00034                 TWOFISH = 1,
00035                 RIJNDAEL128 = 2,
00036                 RIJNDAEL192 = 3,
00037                 RIJNDAEL256 = 4,
00038                 SAFERPLUS = 5,
00039                 RC2 = 6,
00040                 XTEA = 7,
00041                 SERPENT = 8,
00042                 SAFERSK64 = 9,
00043                 SAFERSK128 = 10,
00044                 CAST256 = 11,
00045                 LOKI97 = 12,
00046                 GOST = 13,
00047                 THREEWAY = 14,
00048                 CAST128 = 15,
00049                 BLOWFISH = 16,
00050                 DES = 17,
00051                 TRIPLEDES = 18,
00052                 ENIGMA = 19,
00053                 ARCFOUR = 20,
00054                 PANAMA = 21,
00055                 WAKE = 22
00056         } ;
00057 
00058         EncryptionAlgorithm (void) ;
00059         EncryptionAlgorithm (IRep irep) ;
00064         EncryptionAlgorithm (std::string srep) ;
00065 
00066         void setValue (IRep irep) ;
00067 
00068         std::string getStringRep (void) const ;
00069         IRep getIntegerRep (void) const ;
00070 
00071         bool operator== (const EncryptionAlgorithm& algo) const
00072                 { return (Value == algo.Value) ; } ;
00073 
00079         static bool isValidStringRep (std::string srep) ;
00080 
00081         static bool isValidIntegerRep (unsigned int irep) ;
00082 
00086         static std::string translate (IRep irep) ;
00087 
00091         static IRep translate (std::string srep) ;
00092 
00093         private:
00094         static const unsigned int NumValues = 23 ;
00095         IRep Value ;
00096 
00097         typedef struct struct_Translation {
00098                 IRep    irep ;
00099                 char*   srep ;
00100         } Translation ;
00101         static const Translation Translations[] ;
00102 } ;
00103 
00104 #endif // ndef SH_ENCALGO_H

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