/*

* 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 __SIGNERIMPL_H__

#define __SIGNERIMPL_H__

/**

@file 

@internalComponent

@released

*/

#include <e32base.h>

#include <e32cmn.h>

#include <cryptospi/cryptospidef.h>

#include "signerplugin.h"

#include <padding.h>

#include "common/inlines.h"

/**

 * Abstract base class for signer plug-ins.

 */

namespace SoftwareCrypto

	{

	using namespace CryptoSpi;

	NONSHARABLE_CLASS(CSignerImpl) : public CBase, public MSigner

		{

	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 MSignatureBase virtual functions

		virtual void SetPaddingModeL(TUid aPaddingMode);

		virtual void SetKeyL(const CKey& aPrivateKey);

		virtual TInt GetMaximumInputLengthL() const;

		virtual TInt GetMaximumOutputLengthL() const;

		// End of MSignatureBase

		/// Destructor

		~CSignerImpl();

	protected:

		/// Constructor

		CSignerImpl();

		/**

		Second phase of construction

		@param aKey The signing key

		*/

		virtual void ConstructL(const CKey& aKey);

		/**

		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;

		/**

		Store the signing key. The key length is also checked to meet export restrictions and

		to ensure that it is appropriate for the cipher.

		@param aKey The key

		*/

		virtual void DoSetKeyL(const CKey& aKey);

	protected:

		/// the key, extracted from a CKey object

		CKey* iKey;

	private:

		};

	}

#endif // __SIGNERIMPL_H__