/*
* 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_SOFTWARESHA384AND512IMPL_H_
#define __CRYPTOAPI_SOFTWARESHA384AND512IMPL_H_


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

namespace SoftwareCrypto
	{
	using namespace CryptoSpi;
	
	const TInt KSHA512BlockSize	= 128;
	const TInt KSHA384HashSize	= 48;
	const TInt KSHA512HashSize	= 64;
			
	NONSHARABLE_CLASS(CSHA384And512Impl) : public CBase, public MSHA2Impl
		{	
	public:
		//NewL	
		static CSHA384And512Impl* NewL(TInt aHashSize = KSHA512HashSize);
		CSHA384And512Impl(const CSHA384And512Impl& aSHA512Impl);
		
		//From MSHAImpl
		virtual void Reset(const TAny* aValueArr);
		virtual const TDesC8& Final(void);
		virtual void Update(const TUint8* aData,TUint aLength);
		virtual void StoreState();
		virtual void RestoreState();

	private:
		//Constructors
		CSHA384And512Impl(TInt aHashSize);

	private:
		// Private member functions
		/**
		 * @param aLength - Length of message added in bytes.
		 */ 
		inline void AddLength(const TUint64 aLength);
		inline void CopyWordToHash(TUint64 aVal, TUint aIndex);
		void Block();
		void PadMessage();

	private:
		TBuf8<KSHA512HashSize> iHash;
		TUint64 iA;
		TUint64 iB;
		TUint64 iC;
		TUint64 iD;
		TUint64 iE;
		TUint64 iF;
		TUint64 iG;
		TUint64 iH;
		TUint64 iData[KSHA512BlockSize];

		TUint64 iACopy;
		TUint64 iBCopy;
		TUint64 iCCopy;
		TUint64 iDCopy;
		TUint64 iECopy;
		TUint64 iFCopy;
		TUint64 iGCopy;
		TUint64 iHCopy;
		TUint64 iNlCopy;
		TUint64 iNhCopy;
		TUint	iBlockIndexCopy;
		TUint64 iDataCopy[KSHA512BlockSize];
		
		TUint64 iNl; // Lower word of Message Length
		TUint64 iNh; // Higher word of Message Length
		TUint iBlockIndex; // Message Length in the current block
		};
	}

#endif // __CRYPTOAPI_SOFTWARESHA384AND512IMPL_H_
