steghide 0.5.1
MCryptPP.h
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1/*
2 * steghide 0.5.1 - a steganography program
3 * Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 *
19 */
20
21#include "common.h"
22
23#ifdef USE_LIBMCRYPT
24
25#ifndef SH_MCRYPTPP_H
26#define SH_MCRYPTPP_H
27
28#include <string>
29
30#include <mcrypt.h>
31
32class BitString ;
34class EncryptionMode ;
35
36#ifdef WIN32
37#define MCRYPTPP_LIBDIR "./modules/"
38#else
39#define MCRYPTPP_LIBDIR NULL
40#endif
41
42class MCryptPP {
43 public:
44 MCryptPP (void) ;
45 MCryptPP (EncryptionAlgorithm a, EncryptionMode m) ;
46
47 ~MCryptPP (void) ;
48
54 void open (EncryptionAlgorithm a, EncryptionMode m) ;
55
59 void close (void) ;
60
67 BitString encrypt (BitString p, std::string pp) ;
68
75 BitString decrypt (BitString c, std::string pp) ;
76
77 EncryptionAlgorithm getAlgorithm (void) const ;
78 EncryptionMode getMode (void) const ;
79
87 static unsigned long getEncryptedSize (EncryptionAlgorithm a, EncryptionMode m, unsigned long plnsize) ;
88
89 static std::vector<std::string> getListModes (void) ;
90 static std::vector<std::string> getListAlgorithms (void) ;
91
92 static bool AlgoSupportsMode (EncryptionAlgorithm a, EncryptionMode m) ;
93
94 protected:
95 void *createKey (std::string pp) ;
96
105 std::vector<BYTE> _encrypt (std::vector<unsigned char> p, std::string pp) ;
106
115 std::vector<BYTE> _decrypt (std::vector<unsigned char> c, std::string pp) ;
116
117 private:
119 bool ModuleOpen ;
120 MCRYPT MCryptD ;
121
122 void *s_malloc (size_t size) ;
123} ;
124
125#endif // ndef SH_MCRYPTPP_H
126
127#endif // def USE_LIBMCRYPT
a string of bits
Definition: BitString.h:42
Definition: EncryptionAlgorithm.h:26
Definition: EncryptionMode.h:26