/*
* 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: 
*
*/




/**
 @file
 @internalComponent
 @released
*/


#ifndef __CRYPTOAPI_SOFTWARESHA224AND256IMPL_H_
#define __CRYPTOAPI_SOFTWARESHA224AND256IMPL_H_


#include "softwarehashbase.h"
#include "shacommon.h"

namespace SoftwareCrypto
	{
	using namespace CryptoSpi;
	
	const TInt KSHA256BlockSize	= 64;
	const TInt KSHA224HashSize	= 28;
	const TInt KSHA256HashSize	= 32;
			
	NONSHARABLE_CLASS(CSHA224And256Impl) : public CBase, public MSHA2Impl
		{	
	public:
		//NewL	
		static CSHA224And256Impl* NewL();
		CSHA224And256Impl(const CSHA224And256Impl& aSHA256Impl);
		
		// Functions from MSHA2Impl
		virtual void RestoreState();
		virtual void StoreState();
		virtual void Reset(const TAny*);
		virtual void Update(const TUint8* aData,TUint aLength);
		virtual const TDes8& Final(void);
	
	private:
		//Constructors
		CSHA224And256Impl();
		inline void AddLength(const TUint aLength);
		inline void CopyWordToHash(TUint aVal, TUint aIndex);
		void Block();
		void PadMessage();

	private:
		TBuf8<KSHA256HashSize> iHash;
		TUint iA;
		TUint iB;
		TUint iC;
		TUint iD;
		TUint iE;
		TUint iF;
		TUint iG;
		TUint iH;
		TUint iData[KSHA256BlockSize];

		TUint iACopy;
		TUint iBCopy;
		TUint iCCopy;
		TUint iDCopy;
		TUint iECopy;
		TUint iFCopy;
		TUint iGCopy;
		TUint iHCopy;
		TUint iNlCopy;
		TUint64 iNhCopy;	
		TUint iDataCopy[KSHA256BlockSize];
		
		TUint iNl;
		TUint64 iNh;
		};
	}

#endif // __CRYPTOAPI_SOFTWARESHA224AND256IMPL_H_