/*

* Copyright (c) 2006-2009 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: 

*

*/

#ifndef __DHIMPL_H__

#define __DHIMPL_H__

/**

@file 

@internalComponent

@released

*/

#include <e32base.h>

#include "keyagreementimpl.h"

#include "dhimpl.h"

/**

 * Implementation of DH Key Agreement as described in PKCS#3.

 */

namespace SoftwareCrypto

	{

	using namespace CryptoSpi;

	NONSHARABLE_CLASS(CDHImpl) : public CKeyAgreementImpl

		{

	public:

		static CDHImpl* NewL(const CKey& aPrivateKey, const CCryptoParams* aParams);

		static CDHImpl* NewLC(const CKey& aPrivateKey, const CCryptoParams* aParams);

		// Destructor

		~CDHImpl();

		// from MKeyAgreement

		CKey* AgreeL(const CKey& aOtherPublicKey, const CCryptoParams* aParams);

		// Override CKeyAgreementImpl virtual functions

		TUid ImplementationUid() const;

		static CExtendedCharacteristics* CreateExtendedCharacteristicsL();

		const CExtendedCharacteristics* GetExtendedCharacteristicsL();

	private:

		/**

		Constructor

		*/

		CDHImpl();

		};

	}

#endif // __DHIMPL_H__