WPXEncryption.h
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
2 /* libwpd
3  * Copyright (C) 2007 Jaroslav Fojtik (JaFojtik@seznam.cz)
4  * Copyright (C) 2007 Fridrich Strba (fridrich.strba@bluewin.ch)
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
19  *
20  * For further information visit http://libwpd.sourceforge.net
21  */
22 
23 /* "This product is not manufactured, approved, or supported by
24  * Corel Corporation or Corel Corporation Limited."
25  */
26 
27 #ifndef WPXENCRYPTION_H
28 #define WPXENCRYPTION_H
29 
30 #include "libwpd_types.h"
31 #include "WPXString.h"
32 
33 class WPXInputStream;
34 
36 {
37 public:
38  WPXEncryption(const char *password, const unsigned long encryptionStartOffset = 0);
40 
41  const unsigned char *readAndDecrypt(WPXInputStream *input, unsigned long numBytes, unsigned long &numBytesRead);
42  uint16_t getCheckSum() const;
43 
44  void setEncryptionStartOffset(unsigned long encryptionStartOffset)
45  {
46  m_encryptionStartOffset = encryptionStartOffset;
47  }
48  unsigned long getEncryptionStartOffset() const
49  {
51  }
52 
53  void setEncryptionMaskBase(unsigned char encryptionMaskBase)
54  {
55  m_encryptionMaskBase = encryptionMaskBase;
56  }
57  unsigned char getEncryptionMaskBase() const
58  {
59  return m_encryptionMaskBase;
60  }
61 
63  {
64  return m_password;
65  }
66 
67 private:
68  unsigned char *m_buffer;
70  unsigned long m_encryptionStartOffset;
71  unsigned char m_encryptionMaskBase;
72  // Unimplemented to prevent compiler from creating crasher ones
75 };
76 
77 #endif /* WPXENCRYPTION_H */
78 /* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */

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