/*

 * 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: 

 * Software md2 implementation

 *

 */

 /**

  @file

  @internalComponent

  @released

 */

 #ifndef __CRYPTOAPI_SOFTWARESHA1IMPL_H__

 #define __CRYPTOAPI_SOFTWARESHA1IMPL_H__

 #include "softwarehashbase.h"

 namespace SoftwareCrypto

 	{

 	using namespace CryptoSpi;

 	const TInt KSHA1BlockSize = 16;

 	const TInt KSHA1HashSize = 20;

 	NONSHARABLE_CLASS(CSHA1Impl) : public CBase, public MSoftwareHash

 		{		

 	public:

 		//NewL & NewLC	

 		static CSHA1Impl* NewL();

 		static CSHA1Impl* NewLC();

 		//From MPlugin

 		void Reset();

 		void Close();		

 		void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);		

 		static CExtendedCharacteristics* CreateExtendedCharacteristicsL();

 		const CExtendedCharacteristics* GetExtendedCharacteristicsL();

 		TAny* GetExtension(TUid aExtensionId);

 		//From MHash

 	    TPtrC8 Hash(const TDesC8& aMessage);

 	    void Update(const TDesC8& aMessage);

 		TPtrC8 Final(const TDesC8& aMessage);

 		MHash* ReplicateL();		

 		MHash* CopyL();

 		void SetKeyL(const CKey& aKey);

 		void SetOperationModeL(TUid aOperationMode);		

 		//From MSoftwareHash

 		void RestoreState();

 		void StoreState();

 	private:

 		//Constructors

 		CSHA1Impl();

 		CSHA1Impl(const CSHA1Impl& aSHA1Impl);

 		//Destructor

 		~CSHA1Impl();

 		TUid ImplementationUid();

 		void DoUpdate(const TUint8* aData,TUint aLength);

 		void DoFinal(void);

 		void Block();

 	private:

 		TBuf8<KSHA1HashSize> iHash;

 		TUint iA;

 		TUint iB;

 		TUint iC;

 		TUint iD;

 		TUint iE;

 		TUint iNl;

 		TUint iNh;

 		TUint iData[KSHA1BlockSize*5];

 		TUint iACopy;

 		TUint iBCopy;

 		TUint iCCopy;

 		TUint iDCopy;

 		TUint iECopy;

 		TUint iNlCopy;

 		TUint iNhCopy;	

 		TUint iDataCopy[KSHA1BlockSize*5];

 		};

 	}

 #endif // __CRYPTOAPI_SOFTWARESHA1IMPL_H__