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             : 
      21             : #include <rtl/cipher.h>
      22             : #include <rtl/ref.hxx>
      23             : 
      24             : #include "blowfishcontext.hxx"
      25             : 
      26             : using namespace ::com::sun::star;
      27             : 
      28             : // static
      29           8 : uno::Reference< xml::crypto::XCipherContext > BlowfishCFB8CipherContext::Create( const uno::Sequence< sal_Int8 >& aDerivedKey, const uno::Sequence< sal_Int8 >& aInitVector, bool bEncrypt )
      30             : {
      31           8 :     ::rtl::Reference< BlowfishCFB8CipherContext > xResult = new BlowfishCFB8CipherContext();
      32           8 :     xResult->m_pCipher = rtl_cipher_create( rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeStream );
      33           8 :     if ( !xResult->m_pCipher )
      34             :         throw uno::RuntimeException("Can not create cipher!",
      35           0 :                                      uno::Reference< XInterface >() );
      36             : 
      37           8 :     if ( rtl_Cipher_E_None != rtl_cipher_init(
      38           8 :                                 xResult->m_pCipher,
      39             :                                 bEncrypt ? rtl_Cipher_DirectionEncode : rtl_Cipher_DirectionDecode,
      40           8 :                                 reinterpret_cast< const sal_uInt8* >( aDerivedKey.getConstArray() ),
      41           8 :                                 aDerivedKey.getLength(),
      42           8 :                                 reinterpret_cast< const sal_uInt8* >( aInitVector.getConstArray() ),
      43          32 :                                 aInitVector.getLength() ) )
      44             :     {
      45             :         throw uno::RuntimeException("Can not initialize cipher!",
      46           0 :                                      uno::Reference< XInterface >() );
      47             :     }
      48             : 
      49           8 :     xResult->m_bEncrypt = bEncrypt;
      50             : 
      51           8 :     return uno::Reference< xml::crypto::XCipherContext >( xResult.get() );
      52             : }
      53             : 
      54          24 : BlowfishCFB8CipherContext::~BlowfishCFB8CipherContext()
      55             : {
      56           8 :     if ( m_pCipher )
      57             :     {
      58           0 :         rtl_cipher_destroy ( m_pCipher );
      59           0 :         m_pCipher = NULL;
      60             :     }
      61          16 : }
      62             : 
      63           8 : uno::Sequence< sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::convertWithCipherContext( const uno::Sequence< ::sal_Int8 >& aData )
      64             :     throw( lang::IllegalArgumentException, lang::DisposedException, uno::RuntimeException )
      65             : {
      66           8 :     ::osl::MutexGuard aGuard( m_aMutex );
      67           8 :     if ( !m_pCipher )
      68           0 :         throw lang::DisposedException();
      69             : 
      70           8 :     uno::Sequence< sal_Int8 > aResult( aData.getLength() );
      71           8 :     rtlCipherError nError = rtl_Cipher_E_None;
      72             : 
      73           8 :     if ( m_bEncrypt )
      74             :     {
      75             :         nError = rtl_cipher_encode( m_pCipher,
      76           0 :                           aData.getConstArray(),
      77           0 :                           aData.getLength(),
      78           0 :                           reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
      79           0 :                           aResult.getLength() );
      80             :     }
      81             :     else
      82             :     {
      83             :         nError = rtl_cipher_decode( m_pCipher,
      84           8 :                           aData.getConstArray(),
      85           8 :                           aData.getLength(),
      86           8 :                           reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
      87          24 :                           aResult.getLength() );
      88             :     }
      89             : 
      90           8 :     if ( rtl_Cipher_E_None != nError )
      91             :     {
      92             :         throw uno::RuntimeException("Can not decrypt/encrypt with cipher!",
      93           0 :                                      uno::Reference< uno::XInterface >() );
      94             :     }
      95             : 
      96           8 :     return aResult;
      97             : }
      98             : 
      99           8 : uno::Sequence< ::sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::finalizeCipherContextAndDispose()
     100             :     throw( lang::DisposedException, uno::RuntimeException )
     101             : {
     102           8 :     ::osl::MutexGuard aGuard( m_aMutex );
     103           8 :     if ( !m_pCipher )
     104           0 :         throw lang::DisposedException();
     105             : 
     106           8 :     rtl_cipher_destroy ( m_pCipher );
     107           8 :     m_pCipher = NULL;
     108             : 
     109           8 :     return uno::Sequence< sal_Int8 >();
     110             : }
     111             : 
     112             : 
     113             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */