00001 /* libwpd 00002 * Copyright (C) 2007 Jaroslav Fojtik (JaFojtik@seznam.cz) 00003 * Copyright (C) 2007 Fridrich Strba (fridrich.strba@bluewin.ch) 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Library General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2 of the License, or (at your option) any later version. 00009 * 00010 * This library 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 GNU 00013 * Library General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU Library General Public 00016 * License along with this library; if not, write to the Free Software 00017 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA 00018 * 00019 * For further information visit http://libwpd.sourceforge.net 00020 */ 00021 00022 /* "This product is not manufactured, approved, or supported by 00023 * Corel Corporation or Corel Corporation Limited." 00024 */ 00025 00026 #ifndef WPXENCRYPTION_H 00027 #define WPXENCRYPTION_H 00028 00029 #include "libwpd_types.h" 00030 #include "WPXString.h" 00031 #include <stdio.h> 00032 00033 class WPXInputStream; 00034 00035 class WPXEncryption 00036 { 00037 public: 00038 WPXEncryption(const char *password, const size_t encryptionStartOffset = 0); 00039 ~WPXEncryption(); 00040 00041 const unsigned char *readAndDecrypt(WPXInputStream *input, size_t numBytes, size_t &numBytesRead); 00042 uint16_t getCheckSum() const; 00043 00044 void setEncryptionStartOffset(size_t encryptionStartOffset) { m_encryptionStartOffset = encryptionStartOffset; } 00045 size_t getEncryptionStartOffset() const { return m_encryptionStartOffset; } 00046 00047 void setEncryptionMaskBase(unsigned char encryptionMaskBase) { m_encryptionMaskBase = encryptionMaskBase; } 00048 unsigned char getEncryptionMaskBase() const { return m_encryptionMaskBase; } 00049 00050 const WPXString& getEncryptionPassword() const { return m_password; } 00051 00052 private: 00053 unsigned char *m_buffer; 00054 WPXString m_password; 00055 size_t m_encryptionStartOffset; 00056 unsigned char m_encryptionMaskBase; 00057 }; 00058 00059 #endif /* WPXENCRYPTION_H */