/*

* 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(TUid aImplmentationUid);

		static CSHA1Impl* NewLC(TUid aImplmentationUid);

		//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(TUid aImplmentationUid);

		CSHA1Impl(const CSHA1Impl& aSHA1Impl);

		//Destructor

		~CSHA1Impl();

		TUid ImplementationUid();

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

		void DoFinal(void);

		void Block();

	private:

		TUid iImplementationUid;

		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];

		CExtendedCharacteristics* iExtendedCharacteristics;

		};

	}

#endif // __CRYPTOAPI_SOFTWARESHA1IMPL_H__