/usr/include/dar/scrambler.hpp is in libdar-dev 2.4.8-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// dar - disk archive - a backup/restoration program
// Copyright (C) 2002-2052 Denis Corbin
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// to contact the author : http://dar.linux.free.fr/email.html
/*********************************************************************/
/// \file scrambler.hpp
/// \brief contains the definition of the scrambler class, a very weak encryption scheme
/// \ingroup Private
#ifndef SCRAMBLER_HPP
#define SCRAMBLER_HPP
#include "/usr/include/dar/libdar_my_config.h"
#include <string>
#include "/usr/include/dar/infinint.hpp"
#include "/usr/include/dar/generic_file.hpp"
#include "/usr/include/dar/erreurs.hpp"
#include "/usr/include/dar/infinint.hpp"
#include "/usr/include/dar/secu_string.hpp"
namespace libdar
{
/// \brief scrambler is a very weak encryption scheme
/// \ingroup Private
class scrambler : public generic_file
{
public:
scrambler(const secu_string & pass, generic_file & hidden_side);
scrambler(const scrambler & ref) : generic_file(ref) { throw SRC_BUG; };
~scrambler() { if(buffer != NULL) delete [] buffer; };
const scrambler & operator = (const scrambler & ref) { throw SRC_BUG; };
bool skip(const infinint & pos) { if(ref == NULL) throw SRC_BUG; return ref->skip(pos); };
bool skip_to_eof() { if(ref==NULL) throw SRC_BUG; return ref->skip_to_eof(); };
bool skip_relative(S_I x) { if(ref == NULL) throw SRC_BUG; return ref->skip_relative(x); };
infinint get_position() { if(ref == NULL) throw SRC_BUG; return ref->get_position(); };
#ifdef LIBDAR_SPECIAL_ALLOC
USE_SPECIAL_ALLOC(scrambler);
#endif
protected:
U_I inherited_read(char *a, U_I size);
void inherited_write(const char *a, U_I size);
void inherited_sync_write() {}; // nothing to do
void inherited_terminate() {}; // nothing to do
private:
std::string key;
U_32 len;
generic_file *ref;
unsigned char *buffer;
U_I buf_size;
};
} // end of namespace
#endif
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