cryptbase.cpp

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//
// crypt/cryptbase.cpp
//
// Author:    Beosil <beosil@swileys.com>
// Date:      18. Apr. 2000
//
// Converted: Myrathi <tjh@myrathi.co.uk>
// Date:      03. Jan. 2003
//
// Copyright (C) 1999-2000 Bruno 'Beosil' Heidelberger
//
// 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
//
//
// History:
// - 03. Jan. 2003 : Updated for use alongside POL's multi-encryption code.
// - 18. Apr. 2000 : Keys updated for client 2.0.0
// - 27. Jan. 2000 : Keys updated for client 1.26.4
// - 18. Jan. 2000 : Keys updated for client 1.26.3
// - 23. Nov. 1999 : Keys updated for client 1.26.2 and some compatibility fixes
// - 21. Sep. 1999 : Full redesign to fix the "21036 bytes"-bug
// -  9. Sep. 1999 : Keys updated for client 1.26.1
// -  2. Sep. 1999 : Keys and boxes updated for client 1.26.0b and minor bugfixes
// - 13. Aug. 1999 : First release, working with client 1.26.0(a)
//

#include <string.h>

#include "cryptbase.h"

namespace Pol
{
namespace Crypt
{
// The following tables must be implimented by the relevant derived classes:
//
//   Crypt Boxes
//   Crypt Tables
//   Key Table
//   Seed Table
//   Compression Table

// Macro Definitions ( to avoid big-/little-endian problems )
#define N2L( C, LL )                                                                             \
  LL = ( (unsigned int)( *( ( C )++ ) ) ) << 24, LL |= ( (unsigned int)( *( ( C )++ ) ) ) << 16, \
  LL |= ( (unsigned int)( *( ( C )++ ) ) ) << 8, LL |= ( (unsigned int)( *( ( C )++ ) ) )
#define L2N( LL, C )                                                    \
  *( ( C )++ ) = (unsigned char)( ( ( LL ) >> 24 ) & 0xff ),            \
             *( ( C )++ ) = (unsigned char)( ( ( LL ) >> 16 ) & 0xff ), \
             *( ( C )++ ) = (unsigned char)( ( ( LL ) >> 8 ) & 0xff ),  \
             *( ( C )++ ) = (unsigned char)( ( ( LL ) ) & 0xff )
#define ROUND( LL, R, S, P )                                        \
  LL ^= P;                                                          \
  LL ^= ( ( S[( R >> 24 )] + S[0x0100 + ( ( R >> 16 ) & 0xff )] ) ^ \
          S[0x0200 + ( ( R >> 8 ) & 0xff )] ) +                     \
        S[0x0300 + ( (R)&0xff )]


// Constructor / Destructor
CCryptBase::CCryptBase() {}
CCryptBase::~CCryptBase() {}

// Constructor / Destructor
CCryptBaseCrypt::CCryptBaseCrypt() : CCryptBase(), lcrypt(), m_type( 0 )
{
  memset( &m_masterKey, 0, sizeof( m_masterKey ) );
  memset( &encrypted_data, 0, sizeof( encrypted_data ) );
}
CCryptBaseCrypt::~CCryptBaseCrypt() {}
}
}