Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include <rtl/cipher.h>
      21             : #include <rtl/ref.hxx>
      22             : 
      23             : #include "blowfishcontext.hxx"
      24             : 
      25             : using namespace ::com::sun::star;
      26             : 
      27             : // static
      28          16 : uno::Reference< xml::crypto::XCipherContext > BlowfishCFB8CipherContext::Create( const uno::Sequence< sal_Int8 >& aDerivedKey, const uno::Sequence< sal_Int8 >& aInitVector, bool bEncrypt )
      29             : {
      30          16 :     ::rtl::Reference< BlowfishCFB8CipherContext > xResult = new BlowfishCFB8CipherContext();
      31          16 :     xResult->m_pCipher = rtl_cipher_create( rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeStream );
      32          16 :     if ( !xResult->m_pCipher )
      33           0 :         throw uno::RuntimeException("Can not create cipher!" );
      34             : 
      35          16 :     if ( rtl_Cipher_E_None != rtl_cipher_init(
      36          16 :                                 xResult->m_pCipher,
      37             :                                 bEncrypt ? rtl_Cipher_DirectionEncode : rtl_Cipher_DirectionDecode,
      38          16 :                                 reinterpret_cast< const sal_uInt8* >( aDerivedKey.getConstArray() ),
      39          16 :                                 aDerivedKey.getLength(),
      40          16 :                                 reinterpret_cast< const sal_uInt8* >( aInitVector.getConstArray() ),
      41          64 :                                 aInitVector.getLength() ) )
      42             :     {
      43           0 :         throw uno::RuntimeException("Can not initialize cipher!" );
      44             :     }
      45             : 
      46          16 :     xResult->m_bEncrypt = bEncrypt;
      47             : 
      48          16 :     return uno::Reference< xml::crypto::XCipherContext >( xResult.get() );
      49             : }
      50             : 
      51          48 : BlowfishCFB8CipherContext::~BlowfishCFB8CipherContext()
      52             : {
      53          16 :     if ( m_pCipher )
      54             :     {
      55           0 :         rtl_cipher_destroy ( m_pCipher );
      56           0 :         m_pCipher = NULL;
      57             :     }
      58          32 : }
      59             : 
      60          16 : uno::Sequence< sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::convertWithCipherContext( const uno::Sequence< ::sal_Int8 >& aData )
      61             :     throw( lang::IllegalArgumentException, lang::DisposedException, uno::RuntimeException, std::exception )
      62             : {
      63          16 :     ::osl::MutexGuard aGuard( m_aMutex );
      64          16 :     if ( !m_pCipher )
      65           0 :         throw lang::DisposedException();
      66             : 
      67          16 :     uno::Sequence< sal_Int8 > aResult( aData.getLength() );
      68          16 :     rtlCipherError nError = rtl_Cipher_E_None;
      69             : 
      70          16 :     if ( m_bEncrypt )
      71             :     {
      72             :         nError = rtl_cipher_encode( m_pCipher,
      73           0 :                           aData.getConstArray(),
      74           0 :                           aData.getLength(),
      75           0 :                           reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
      76           0 :                           aResult.getLength() );
      77             :     }
      78             :     else
      79             :     {
      80             :         nError = rtl_cipher_decode( m_pCipher,
      81          16 :                           aData.getConstArray(),
      82          16 :                           aData.getLength(),
      83          16 :                           reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
      84          48 :                           aResult.getLength() );
      85             :     }
      86             : 
      87          16 :     if ( rtl_Cipher_E_None != nError )
      88             :     {
      89           0 :         throw uno::RuntimeException("Can not decrypt/encrypt with cipher!" );
      90             :     }
      91             : 
      92          16 :     return aResult;
      93             : }
      94             : 
      95          16 : uno::Sequence< ::sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::finalizeCipherContextAndDispose()
      96             :     throw( lang::DisposedException, uno::RuntimeException, std::exception )
      97             : {
      98          16 :     ::osl::MutexGuard aGuard( m_aMutex );
      99          16 :     if ( !m_pCipher )
     100           0 :         throw lang::DisposedException();
     101             : 
     102          16 :     rtl_cipher_destroy ( m_pCipher );
     103          16 :     m_pCipher = NULL;
     104             : 
     105          16 :     return uno::Sequence< sal_Int8 >();
     106             : }
     107             : 
     108             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */