/*

 * 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 __DSAVERIFYIMPL_H__

 #define __DSAVERIFYIMPL_H__

 /**

 @file 

 @internalComponent

 @released

 */

 #include <e32base.h>

 #include <e32cmn.h>

 #include <cryptospi/cryptospidef.h>

 #include "verifierimpl.h"

 #include "common/inlines.h"

 /**

  * Implementation of DSA verification

  */

 namespace SoftwareCrypto

 	{

 	using namespace CryptoSpi;

 	NONSHARABLE_CLASS(CDSAVerifierImpl) : public CVerifierImpl

 		{

 	public:

 		/**

 		Creates an instance of a DSA verifier plug-in.

 		@param aKey The key

 		@return A pointer to a CDSAVerifierImpl instance

 		*/

 		static CDSAVerifierImpl* NewL(const CKey& aKey);

 		/**

 		Creates an instance of a DSA verifier plug-in.

 		@param aKey The key

 		@return A pointer to a CDSAVerifierImpl instance

 		*/

 		static CDSAVerifierImpl* NewLC(const CKey& aKey);

 		// Override CVerifierImpl virtual functions

 		TUid ImplementationUid() const;

 		// End of CVerifierImpl

 		// Override MSignatureBase virtual functions

 		void SetKeyL(const CKey& aPublicKey);

 		virtual TInt GetMaximumInputLengthL() const;

 		// End of MSignatureBase

 		// Override MSigner virtual functions

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

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

 		// End of MSigner

 		const CExtendedCharacteristics* GetExtendedCharacteristicsL();

 		static CExtendedCharacteristics* CreateExtendedCharacteristicsL();

 		/// Destructor

 		~CDSAVerifierImpl();

 	protected:

 		/// Constructor

 		CDSAVerifierImpl();

 		/// second phase of construction

 		virtual void ConstructL(const CKey& aKey);

 	private:

 		static const TUint KSha1HashLength = 20;	

 		};

 	}

 #endif // __DSAVERIFYIMPL_H__