diff -r da2ae96f639b -r cd501b96611d cryptoplugins/cryptospiplugins/source/softwarecrypto/keyagreementimpl.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/source/softwarecrypto/keyagreementimpl.h	Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,87 @@
+/*
+* 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 __KEYAGREEMENTIMPL_H__
+#define __KEYAGREEMENTIMPL_H__
+
+/**
+@file 
+@internalComponent
+@released
+*/
+
+#include <e32base.h>
+#include <cryptospi/cryptospidef.h>
+#include "keys.h"
+#include "keyagreementplugin.h"
+
+/**
+ * Abstract base class for key agreement plug-ins.
+ */
+namespace SoftwareCrypto
+	{
+	using namespace CryptoSpi;
+	
+	NONSHARABLE_CLASS(CKeyAgreementImpl) : public CBase, public MKeyAgreement
+		{
+	public:
+		
+		// Override MPlugin virtual functions
+		void Close();
+		void Reset(); // Always call reset in super-class if you override this
+		TAny* GetExtension(TUid aExtensionId);
+		void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);
+		// End of MPlugin
+
+		// Override MKeyAgreement virtual functions
+		void SetKeyL(const CKey& aSelfPrivateKey, const CCryptoParams* aParams);
+		// End of MKeyAgreement
+
+		/// Destructor
+		~CKeyAgreementImpl();
+		
+	protected:
+		/**
+		Constructor
+		*/
+		CKeyAgreementImpl();
+			
+		/**
+		Second phase of construction. Always call ConstructL in the super-class
+		if your override this method.
+		@param aPrivateKey The private key of one of the parties
+		@param aParams	The parameters shared between both parties
+		*/
+		virtual void ConstructL(const CKey& aPrivateKey, const CCryptoParams* aParams);
+
+		/**
+		Helper function implemented by concrete cipher sub-class that allows
+		GetCharacteristicsL to return the correct characteristics object.
+		@return The implemention uid
+		*/
+		virtual TUid ImplementationUid() const = 0;
+
+	private:
+
+	protected:
+		CKey* iPrivateKey;
+		CCryptoParams* iSharedParams;	// common parameters between our private key and their public key
+		};
+	}
+
+#endif	//	__KEYAGREEMENTIMPL_H__