/*

 * Copyright (c) 2007-2009 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 __VERIFIERIMPL_H__

 #define __VERIFIERIMPL_H__

 /**

 @file 

 @internalComponent

 @released

 */

 #include <e32base.h>

 #include <e32cmn.h>

 #include <cryptospi/cryptospidef.h>

 #include <padding.h>

 #include "verifierplugin.h"

 #include "common/inlines.h"

 /**

  * Abstract base class for verifier plug-ins.

  */

 namespace SoftwareCrypto

 	{

 	using namespace CryptoSpi;

 	NONSHARABLE_CLASS(CVerifierImpl) : public CBase, public MVerifier

 		{

 	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

 		// Override MVerifier virtual functions

 		virtual void VerifyL(const TDesC8& aInput, const CCryptoParams& aSignature, TBool& aVerificationResult) = 0;

 		virtual void InverseSignL(HBufC8*& aOutput, const CCryptoParams& aSignature) = 0;

 		// End of MVerifier

 		/// Destructor

 		~CVerifierImpl();

 	protected:

 		/// Constructor

 		CVerifierImpl();

 		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 key to use for verifying.

 		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

 		CKey* iKey;

 		};

 	}

 #endif // __VERIFIERIMPL_H__