sl@0: /*
sl@0: * Copyright (c) 2006-2009 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: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #ifndef __BUFFEREDTRANSFORMATIONSHIM_H__
sl@0: #define __BUFFEREDTRANSFORMATIONSHIM_H__
sl@0: 
sl@0: #include <bufferedtransformation.h>
sl@0: 
sl@0: /**
sl@0: @file
sl@0: @internalComponent
sl@0: @released
sl@0: */
sl@0: 
sl@0: namespace CryptoSpi 
sl@0: 	{
sl@0: 	class CSymmetricCipher;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0:  Shim class that delegates all operations to an Crypto Spi object.
sl@0:  This object is constructed automatically by CBufferedEncryptorShim and should
sl@0:  not be used directly.
sl@0:  */
sl@0: NONSHARABLE_CLASS(CBufferedEncryptorShim) : public CBufferedEncryptor
sl@0: {
sl@0: public:
sl@0: 	/**
sl@0: 	Creates a new CBufferedEncryptorShim.
sl@0: 	N.B. It is the reponsiblity of the CALLER to check that block transform
sl@0: 	object contains an SPI delegate and that the delegate supports the specified
sl@0: 	padding mode.
sl@0: 	*/
sl@0: 	static CBufferedEncryptorShim* NewL(CBlockTransformation* aBT, CPadding* aPadding);
sl@0: 	
sl@0: 	// From CBufferedTransformation
sl@0: 	void Process(const TDesC8& aInput, TDes8& aOutput);
sl@0: 	TInt MaxOutputLength(TInt aInputLength) const;
sl@0: 	void Reset();
sl@0: 	TInt BlockSize() const;
sl@0: 	TInt KeySize() const;	
sl@0: 	void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput);
sl@0: 	TInt MaxFinalOutputLength(TInt aInputLength) const;
sl@0: private:	
sl@0: 	CBufferedEncryptorShim(CryptoSpi::CSymmetricCipher* aSymmetricCipherImpl);
sl@0: 	void ConstructL(CBlockTransformation* aBT, CPadding* aPadding);
sl@0: 	
sl@0: 	// owned by block transform - iBT
sl@0: 	CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;
sl@0: };
sl@0: 
sl@0: /**
sl@0:  Shim class that delegates all operations to an Crypto Spi object.
sl@0:  This object is constructed automatically by CBufferedEncryptorShim and should
sl@0:  not be used directly.
sl@0:  */
sl@0: NONSHARABLE_CLASS(CBufferedDecryptorShim) : public CBufferedDecryptor
sl@0: {
sl@0: public:
sl@0: 	/**
sl@0: 	Creates a new CBufferedDecryptorShim.
sl@0: 	N.B. It is the reponsiblity of the CALLER to check that block transform
sl@0: 	object contains an SPI delegate and that the delegate supports the specified
sl@0: 	padding mode.
sl@0: 	*/
sl@0: 	static CBufferedDecryptorShim* NewL(CBlockTransformation* aBT, CPadding* aPadding);
sl@0: 	
sl@0: 	// From CBufferedTransformation	
sl@0: 	void Process(const TDesC8& aInput, TDes8& aOutput);
sl@0: 	TInt MaxOutputLength(TInt aInputLength) const;
sl@0: 	void Reset();
sl@0: 	TInt BlockSize() const;
sl@0: 	TInt KeySize() const;	
sl@0: 	void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput);
sl@0: 	TInt MaxFinalOutputLength(TInt aInputLength) const;
sl@0: private:	
sl@0: 	CBufferedDecryptorShim(CryptoSpi::CSymmetricCipher* aSymmetricCipherImpl);
sl@0: 	void ConstructL(CBlockTransformation* aBT, CPadding* aPadding);
sl@0: 	
sl@0: 	// owned by block transform - iBT
sl@0: 	CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;
sl@0: };
sl@0: 
sl@0: #endif	//	__BUFFEREDTRANSFORMATIONSHIM_H__