/*

 * 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__