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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/config.h>
#include <com/sun/star/lang/DisposedException.hpp>
#include <rtl/cipher.h>
#include <rtl/ref.hxx>
#include "blowfishcontext.hxx"
using namespace ::com::sun::star;
// static
uno::Reference< xml::crypto::XCipherContext > BlowfishCFB8CipherContext::Create( const uno::Sequence< sal_Int8 >& aDerivedKey, const uno::Sequence< sal_Int8 >& aInitVector, bool bEncrypt )
{
::rtl::Reference< BlowfishCFB8CipherContext > xResult = new BlowfishCFB8CipherContext();
xResult->m_pCipher = rtl_cipher_create( rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeStream );
if ( !xResult->m_pCipher )
throw uno::RuntimeException("Can not create cipher!" );
if ( rtl_Cipher_E_None != rtl_cipher_init(
xResult->m_pCipher,
bEncrypt ? rtl_Cipher_DirectionEncode : rtl_Cipher_DirectionDecode,
reinterpret_cast< const sal_uInt8* >( aDerivedKey.getConstArray() ),
aDerivedKey.getLength(),
reinterpret_cast< const sal_uInt8* >( aInitVector.getConstArray() ),
aInitVector.getLength() ) )
{
throw uno::RuntimeException("Can not initialize cipher!" );
}
xResult->m_bEncrypt = bEncrypt;
return xResult;
}
BlowfishCFB8CipherContext::~BlowfishCFB8CipherContext()
{
if ( m_pCipher )
{
rtl_cipher_destroy ( m_pCipher );
m_pCipher = nullptr;
}
}
uno::Sequence< sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::convertWithCipherContext( const uno::Sequence< ::sal_Int8 >& aData )
{
std::scoped_lock aGuard( m_aMutex );
if ( !m_pCipher )
throw lang::DisposedException();
uno::Sequence< sal_Int8 > aResult( aData.getLength() );
rtlCipherError nError = rtl_Cipher_E_None;
if ( m_bEncrypt )
{
nError = rtl_cipher_encode( m_pCipher,
aData.getConstArray(),
aData.getLength(),
reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
aResult.getLength() );
}
else
{
nError = rtl_cipher_decode( m_pCipher,
aData.getConstArray(),
aData.getLength(),
reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
aResult.getLength() );
}
if ( rtl_Cipher_E_None != nError )
{
throw uno::RuntimeException("Can not decrypt/encrypt with cipher!" );
}
return aResult;
}
uno::Sequence< ::sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::finalizeCipherContextAndDispose()
{
std::scoped_lock aGuard( m_aMutex );
if ( !m_pCipher )
throw lang::DisposedException();
rtl_cipher_destroy ( m_pCipher );
m_pCipher = nullptr;
return uno::Sequence< sal_Int8 >();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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