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: * ** IMPORTANT ** PublishedPartner API's in this file are published to 3rd party developers via the 
sl@0: * Symbian website. Changes to these API's should be treated as PublishedAll API changes and the Security TA should be consulted.
sl@0: * CNullCipher class implementation
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: /**
sl@0:  @file 
sl@0:  @publishedPartner
sl@0:  @released 
sl@0: */
sl@0:  
sl@0: #ifndef __NULLCIPHER_H__
sl@0: #define __NULLCIPHER_H__
sl@0: 
sl@0: #include <streamcipher.h>
sl@0: 
sl@0: /**
sl@0: * Stream cipher that does no encryption or decryption, but simply returns the
sl@0: * data given to it.
sl@0: * From CBlockTransformation
sl@0: *
sl@0: */
sl@0: class CNullCipher : public CStreamCipher
sl@0: {
sl@0: public:	
sl@0: 	/**
sl@0: 	 * Creates a new CNullCipher object.
sl@0: 	 * 
sl@0: 	 * @return	A pointer to a new CNullCipher object
sl@0: 	 */
sl@0: 	IMPORT_C static CNullCipher* NewL(void);
sl@0: 
sl@0: 	/**
sl@0: 	 * Creates a new CNullCipher object.
sl@0: 	 * 
sl@0: 	 * The returned pointer is put onto the cleanup stack.
sl@0: 	 * 
sl@0: 	 * @return	A pointer to a new CNullCipher object
sl@0: 	 */
sl@0: 	IMPORT_C static CNullCipher* NewLC(void);
sl@0: 	virtual void Reset(void);
sl@0: 	virtual TInt KeySize(void) const;
sl@0: protected:
sl@0: 	virtual void DoProcess(TDes8& aData);
sl@0: 	/**
sl@0: 	 * @internalAll
sl@0: 	 */
sl@0: 	CNullCipher();
sl@0: };
sl@0: 
sl@0: #endif	//	__NULLCIPHER_H__