sl@0: /*
sl@0: * Copyright (c) 2008-2009 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: * mac plugin implementation
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @internalComponent
sl@0:  @released
sl@0: */
sl@0: 
sl@0: #ifndef __CRYPTOAPI_SOFTWAREMACIMPL_H__
sl@0: #define __CRYPTOAPI_SOFTWAREMACIMPL_H__
sl@0: 
sl@0: #include <cryptospi/macplugin.h>
sl@0: #include "cryptosymmetriccipherapi.h"
sl@0: #include "softwarehashbase.h"
sl@0: #include "keys.h"
sl@0: #include "cmacimpl.h"
sl@0: #include "hmacimpl.h"
sl@0: 
sl@0: 
sl@0: namespace SoftwareCrypto
sl@0: 	{
sl@0: 	using namespace CryptoSpi;
sl@0:     	
sl@0: 	NONSHARABLE_CLASS(CMacImpl) : public CBase, public MMac  
sl@0: 		{		
sl@0: 	public:
sl@0: 		/**
sl@0: 		 * MAC implementation instance creation methods
sl@0: 		 */
sl@0: 		static CMacImpl* NewL(const CKey& aKey,
sl@0: 				              const TUid aImplementationId,
sl@0: 				              const CCryptoParams* aAlgorithmParams);
sl@0: 
sl@0: 		/**
sl@0: 		 * Methods from MPlugin: Base class for all the plugins
sl@0: 		 */
sl@0: 		void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);	
sl@0: 		const CExtendedCharacteristics* GetExtendedCharacteristicsL();
sl@0: 		TAny* GetExtension(TUid aExtensionId);
sl@0: 		void Reset();
sl@0: 		// this deletes the instance of this class. The method is called at the user side
sl@0: 		// indirectly through the MPlugin pointer instance.
sl@0: 		void Close();		
sl@0: 		
sl@0: 		/**
sl@0: 		 *  From MMac: MAC interface (Software based)
sl@0: 		 */
sl@0: 	    TPtrC8 MacL(const TDesC8& aMessage);
sl@0:         void UpdateL(const TDesC8& aMessage);
sl@0:         TPtrC8 FinalL(const TDesC8& aMessage);
sl@0: 		void ReInitialiseAndSetKeyL(const CKey& aKey);    
sl@0: 		MMac* ReplicateL();
sl@0: 		MMac* CopyL();
sl@0: 	
sl@0: 	private:
sl@0: 	
sl@0: 		/**
sl@0: 		 *  Enumerators to recognize the type of algorithm used for MAC
sl@0: 		 */
sl@0: 		enum TMacBase {EHashBased, ECipherBased};
sl@0: 
sl@0: 
sl@0: 		/**
sl@0: 		 * Constructors and Destructors
sl@0: 		 */
sl@0: 		~CMacImpl();
sl@0:     	CMacImpl();
sl@0: 		CMacImpl(const CMacImpl& aMacImpl);
sl@0: 		
sl@0: 		/**
sl@0: 		 * Initialize the 'iHmacImpl' and 'iCipherImpl' instances.
sl@0: 		 */
sl@0: 		void ConstructL(const CKey& aKey, const TUid aImplementationId,const CCryptoParams* aAlgorithmParams);
sl@0: 		
sl@0: 		/**
sl@0: 		 * This will return the Uid of the specific implementation
sl@0: 		 * used for the algorithm.
sl@0: 		 */
sl@0: 		TUid ImplementationUid() const;
sl@0: 	
sl@0: 	private:			
sl@0: 		TUid iImplementationUid;
sl@0: 		TMacBase iBase;
sl@0: 		CKey* iKey;
sl@0: 		
sl@0: 		/**
sl@0: 		 * The hash based MAC implementation. This is software based implementation.
sl@0: 		 */
sl@0: 		CHMacImpl* iHmacImpl;
sl@0: 	
sl@0: 		/**
sl@0: 		 * The symmetric cipher based MAC implementation.
sl@0: 		 */
sl@0: 		CCMacImpl* iCmacImpl;
sl@0: 		};
sl@0: 	}
sl@0: 
sl@0: #endif // __CRYPTOAPI_SOFTWAREMACIMPL_H__