cryptoplugins/cryptospiplugins/source/softwarecrypto/macimpl.h
changeset 19 cd501b96611d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/source/softwarecrypto/macimpl.h	Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,115 @@
+/*
+* Copyright (c) 2008-2009 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: 
+* mac plugin implementation
+*
+*/
+
+
+/**
+ @file
+ @internalComponent
+ @released
+*/
+
+#ifndef __CRYPTOAPI_SOFTWAREMACIMPL_H__
+#define __CRYPTOAPI_SOFTWAREMACIMPL_H__
+
+#include <cryptospi/macplugin.h>
+#include "cryptosymmetriccipherapi.h"
+#include "softwarehashbase.h"
+#include "keys.h"
+#include "cmacimpl.h"
+#include "hmacimpl.h"
+
+
+namespace SoftwareCrypto
+	{
+	using namespace CryptoSpi;
+    	
+	NONSHARABLE_CLASS(CMacImpl) : public CBase, public MMac  
+		{		
+	public:
+		/**
+		 * MAC implementation instance creation methods
+		 */
+		static CMacImpl* NewL(const CKey& aKey,
+				              const TUid aImplementationId,
+				              const CCryptoParams* aAlgorithmParams);
+
+		/**
+		 * Methods from MPlugin: Base class for all the plugins
+		 */
+		void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);	
+		const CExtendedCharacteristics* GetExtendedCharacteristicsL();
+		TAny* GetExtension(TUid aExtensionId);
+		void Reset();
+		// this deletes the instance of this class. The method is called at the user side
+		// indirectly through the MPlugin pointer instance.
+		void Close();		
+		
+		/**
+		 *  From MMac: MAC interface (Software based)
+		 */
+	    TPtrC8 MacL(const TDesC8& aMessage);
+        void UpdateL(const TDesC8& aMessage);
+        TPtrC8 FinalL(const TDesC8& aMessage);
+		void ReInitialiseAndSetKeyL(const CKey& aKey);    
+		MMac* ReplicateL();
+		MMac* CopyL();
+	
+	private:
+	
+		/**
+		 *  Enumerators to recognize the type of algorithm used for MAC
+		 */
+		enum TMacBase {EHashBased, ECipherBased};
+
+
+		/**
+		 * Constructors and Destructors
+		 */
+		~CMacImpl();
+    	CMacImpl();
+		CMacImpl(const CMacImpl& aMacImpl);
+		
+		/**
+		 * Initialize the 'iHmacImpl' and 'iCipherImpl' instances.
+		 */
+		void ConstructL(const CKey& aKey, const TUid aImplementationId,const CCryptoParams* aAlgorithmParams);
+		
+		/**
+		 * This will return the Uid of the specific implementation
+		 * used for the algorithm.
+		 */
+		TUid ImplementationUid() const;
+	
+	private:			
+		TUid iImplementationUid;
+		TMacBase iBase;
+		CKey* iKey;
+		
+		/**
+		 * The hash based MAC implementation. This is software based implementation.
+		 */
+		CHMacImpl* iHmacImpl;
+	
+		/**
+		 * The symmetric cipher based MAC implementation.
+		 */
+		CCMacImpl* iCmacImpl;
+		};
+	}
+
+#endif // __CRYPTOAPI_SOFTWAREMACIMPL_H__