/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

/**

 @file

 @internalComponent

 @released

*/

#ifndef	CDUMMYECCIMPL_H

#define	CDUMMYECCIMPL_H

#include <e32base.h>

#include <e32cmn.h>

#include <cryptospi/cryptospidef.h>

#include "keys.h"

#include "asymmetriccipherplugin.h"

namespace DummyEccHwCrypto

	{

	using namespace CryptoSpi;

	/**

	 * Implements the MAsymmetricCipher interface.

	 * 

	 * This should be used to create the cipher object to perform 

	 * encryption / decryption using ECC.

	 */

	NONSHARABLE_CLASS(CDummyECCCipherImpl) : public CBase, public MAsymmetricCipher

		{

	public:

	    static CDummyECCCipherImpl* NewL(const CKey& aKey, TUid aCryptoMode, TUid aPaddingMode);

	    static CDummyECCCipherImpl* NewLC(const CKey& aKey, TUid aCryptoMode, TUid aPaddingMode);

	    // MPlugin Interface

	    void Close();

	    void Reset();

	    void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);

	    const CExtendedCharacteristics* GetExtendedCharacteristicsL();

	    TAny* GetExtension(TUid aExtensionId); 

	    // End of MPlugin Interface

	    // MAsymmetricCipherBase Interface

	    void SetKeyL(const CKey& aKey);

	    void SetCryptoModeL(TUid aCryptoMode);

	    void SetPaddingModeL(TUid aPaddingMode);

	    TInt GetMaximumInputLengthL() const;

	    TInt GetMaximumOutputLengthL() const;

	    // End of MAsymmetricCipherBase Interface

		// MAsymmetricCipher Interface

		void ProcessL(const TDesC8& aInput, TDes8& aOutput);

		TUid ImplementationUid() const;

		// Destructor

		~CDummyECCCipherImpl();

	private:

		CDummyECCCipherImpl(TUid aCryptoMode, TUid aPaddingMode);

		void ConstructL(const CKey& aKey);

		void DecryptL(const TDesC8& aInput, TDes8& aOutput);

		void EncryptL(const TDesC8& aInput, TDes8& aOutput);

	private:

		/* The key extracted from a CKey object. This would just have 

		 * a handle to the key stored in hardware. Hence the actual key 

		 * would not be available to the user of this cryptoSPI plugin.

		 */

	    CKey* iKey;

		/// encryption or decryption

		TUid iCryptoMode;		

		/* The current padding scheme. This is not being used in the 

		 * reference implementation.

		 */

		TUid iPaddingMode;

		};

	}

#endif	//	CDUMMYECCIMPL_H