1 /*

     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #ifndef __KEYAGREEMENTIMPL_H__

    20 #define __KEYAGREEMENTIMPL_H__

    21 

    22 /**

    23 @file 

    24 @internalComponent

    25 @released

    26 */

    27 

    28 #include <e32base.h>

    29 #include <cryptospi/cryptospidef.h>

    30 #include "keys.h"

    31 #include "keyagreementplugin.h"

    32 

    33 /**

    34  * Abstract base class for key agreement plug-ins.

    35  */

    36 namespace SoftwareCrypto

    37 	{

    38 	using namespace CryptoSpi;

    39 	

    40 	NONSHARABLE_CLASS(CKeyAgreementImpl) : public CBase, public MKeyAgreement

    41 		{

    42 	public:

    43 		

    44 		// Override MPlugin virtual functions

    45 		void Close();

    46 		void Reset(); // Always call reset in super-class if you override this

    47 		TAny* GetExtension(TUid aExtensionId);

    48 		void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);

    49 		// End of MPlugin

    50 

    51 		// Override MKeyAgreement virtual functions

    52 		void SetKeyL(const CKey& aSelfPrivateKey, const CCryptoParams* aParams);

    53 		// End of MKeyAgreement

    54 

    55 		/// Destructor

    56 		~CKeyAgreementImpl();

    57 		

    58 	protected:

    59 		/**

    60 		Constructor

    61 		*/

    62 		CKeyAgreementImpl();

    63 			

    64 		/**

    65 		Second phase of construction. Always call ConstructL in the super-class

    66 		if your override this method.

    67 		@param aPrivateKey The private key of one of the parties

    68 		@param aParams	The parameters shared between both parties

    69 		*/

    70 		virtual void ConstructL(const CKey& aPrivateKey, const CCryptoParams* aParams);

    71 

    72 		/**

    73 		Helper function implemented by concrete cipher sub-class that allows

    74 		GetCharacteristicsL to return the correct characteristics object.

    75 		@return The implemention uid

    76 		*/

    77 		virtual TUid ImplementationUid() const = 0;

    78 

    79 	private:

    80 

    81 	protected:

    82 		CKey* iPrivateKey;

    83 		CCryptoParams* iSharedParams;	// common parameters between our private key and their public key

    84 		};

    85 	}

    86 

    87 #endif	//	__KEYAGREEMENTIMPL_H__