--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/source/softwarecrypto/hmacimpl.h	Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,93 @@
+/*
+* 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: 
+* hmac implementation
+*
+*/
+
+
+/**
+ @file
+ @internalComponent
+ @released
+*/
+
+#ifndef __CRYPTOAPI_SOFTWAREHMACIMPL_H__
+#define __CRYPTOAPI_SOFTWAREHMACIMPL_H__
+
+#include "softwarehashbase.h"
+#include "keys.h"
+
+namespace SoftwareCrypto
+	{
+	using namespace CryptoSpi;
+	
+	/**
+	 * This is the maximum block size currently supported by HMAC implementation.
+	 */  
+	const TInt KMaxBlockSize = 128;		
+	
+	NONSHARABLE_CLASS(CHMacImpl) : public CBase, public MSoftwareHash
+		{		
+	public:
+		//NewL & NewLC
+		static CHMacImpl* NewL(MSoftwareHash* aHash);
+		static CHMacImpl* NewLC(MSoftwareHash* aHash);
+		static CHMacImpl* NewL(const CKey& aKey, MSoftwareHash* aHash);
+		static CHMacImpl* NewLC(const CKey& aKey, MSoftwareHash* aHash);
+
+		//From MPlugin
+		void Reset();
+		void Close();		
+		void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);		
+		const CExtendedCharacteristics* GetExtendedCharacteristicsL();
+		TAny* GetExtension(TUid aExtensionId);
+		
+		//From MHmac
+	    TPtrC8 Hash(const TDesC8& aMessage);
+	    void Update(const TDesC8& aMessage);
+		TPtrC8 Final(const TDesC8& aMessage);
+		void SetKeyL(const CKey& aKey);
+		void SetOperationModeL(TUid aOperationMode);
+		MHash* ReplicateL();		
+		MHash* CopyL();
+				
+	private:
+		//Constructors
+		CHMacImpl();
+		CHMacImpl(const CHMacImpl& aHMacImpl);
+		
+		//Destructor
+		~CHMacImpl();
+		void RestoreState();
+		void StoreState();
+		void ConstructL(const CKey& aKey, MSoftwareHash* aHash);
+		void ConstructL(MSoftwareHash* aHash);
+		void Initialise(const TDesC8& aKey);
+		void InitBlockSizeL();
+		
+	private:
+		TUid iImplementationUid;
+		MSoftwareHash* iDigest;
+		
+		TBuf8<KMaxBlockSize> iInnerPad;
+		TBuf8<KMaxBlockSize> iOuterPad;
+		TBuf8<KMaxBlockSize> iInnerPadCopy;
+		TBuf8<KMaxBlockSize> iOuterPadCopy;
+		
+		TInt iBlockSize;
+		};
+	}
+
+#endif // __CRYPTOAPI_SOFTWAREHMACIMPL_H__