sl@0: /*
sl@0: * Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: * streamcipher.cpp
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #include "streamcipher.h"
sl@0: #include <cryptopanic.h>
sl@0: 
sl@0: EXPORT_C void CStreamCipher::ProcessFinalL(const TDesC8& aInput, TDes8& aOutput)
sl@0: 	{
sl@0: 	Process(aInput, aOutput);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CStreamCipher::Process(const TDesC8& aInput, TDes8& aOutput)
sl@0: 	{
sl@0: 	TInt outputIndex = aOutput.Size();
sl@0: 
sl@0: 	// aOutput may already have outputIndex bytes of data in it
sl@0: 	// check there will still be enough space to process the result
sl@0: 	__ASSERT_DEBUG(aOutput.MaxLength() - outputIndex >= MaxOutputLength(aInput.Length()), User::Panic(KCryptoPanic, ECryptoPanicOutputDescriptorOverflow));
sl@0: 
sl@0: 	aOutput.Append(aInput);
sl@0: 
sl@0: 	TPtr8 transformBuf((TUint8*)(aOutput.Ptr()) + outputIndex, aInput.Size(),
sl@0: 		aInput.Size());
sl@0: 	DoProcess(transformBuf);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CStreamCipher::BlockSize() const
sl@0: 	{
sl@0: 	return (1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CStreamCipher::MaxOutputLength(TInt aInputLength) const
sl@0: 	{
sl@0: 	return aInputLength;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CStreamCipher::MaxFinalOutputLength(TInt aInputLength) const
sl@0: 	{
sl@0: 	return aInputLength;
sl@0: 	}
sl@0: