93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
/*
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* steghide 0.5.1 - a steganography program
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* Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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 SH_MHASHPP_H
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#define SH_MHASHPP_H
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#include <mhash.h>
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#include "common.h"
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class BitString ;
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class MHashPP {
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public:
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enum Command { endhash } ;
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MHashPP (void) ;
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MHashPP (hashid a) ;
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void init (hashid a) ;
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const std::vector<BYTE>& end (void) ;
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/**
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* feed the std::string v to the hashing algorithm
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* \param v the std::string to be feeded to the hashing algorithm (without '\0' at the end)
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**/
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MHashPP& operator<< (std::string v) ;
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/**
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* feed the BitString v to the hashing algorithm
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* \param v the BitString to be feeded to the hashing algorithm (v.getLength() % 8 == 0 must hold)
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**/
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MHashPP& operator<< (BitString v) ;
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/**
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* feed the byte v to the hashing algorithm
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* \param v the byte to be feeded to the hashing algorithm
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**/
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MHashPP& operator<< (BYTE v) ;
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/**
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* interpret the command c
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* \param c a command (member of MHashPP::Command)
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**/
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MHashPP& operator<< (Command c) ;
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/**
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* get the hash bits
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* \return the hash value of the data that has been passed via <<
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**/
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BitString getHashBits (void) ;
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const std::vector<BYTE>& getHashBytes (void) ;
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/**
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* get the hash size
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* \return the size of the value returned by getHashBits in bytes
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**/
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unsigned int getHashSize (void) ;
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private:
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/// true iff HashD contains a legal hash descriptor and data can be passed via <<
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bool hashing ;
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MHASH HashD ;
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/// true iff HashBytes contains a valid hash value
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bool HashBytesValid ;
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std::vector<BYTE> HashBytes ;
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std::string getAlgorithmName (void) ;
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static std::string getAlgorithmName (hashid id) ;
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} ;
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#endif // ndef SH_MHASHPP_H
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