--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/secureswitools/swisistools/source/sisxlibrary/checksum.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,138 @@
+/*
+* Copyright (c) 2004-2009 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: 
+* Note: This file may contain code to generate corrupt files for test purposes.
+* Such code is excluded from production builds by use of compiler defines;
+* it is recommended that such code should be removed if this code is ever published publicly.
+* generic base for all SIS checksums
+*
+*/
+
+
+/**
+ @file 
+ @internalComponent
+ @released
+*/
+
+#ifndef __CHECKSUM_H__
+#define __CHECKSUM_H__
+
+#include "structure.h"
+#include "numeric.h"
+
+#include <stdlib.h>
+
+
+template <CSISFieldRoot::TFieldType FieldType> class CChecksum : public CStructure <FieldType>
+	{
+public:
+	/**
+	 * Default constructor
+	 */
+	CChecksum (const bool aRequired = true);
+	/**
+	 * Copy Constructor
+	 */
+	CChecksum (const CChecksum& aInitialiser);
+	
+public:
+	/**
+	 * Class name
+	 */
+	virtual std::string Name () const;
+	/**
+	 * Checks if the structure is required or not. Used for externalizing
+	 * the class. If its a waste of space then we need not write this into
+	 * the file.
+	 */
+	virtual bool WasteOfSpace () const;
+#ifdef GENERATE_ERRORS
+	virtual void CreateDefects ();
+#endif // GENERATE_ERRORS
+	/**
+	 * Set the CRC value
+	 * @param aCrc new CRC value
+	 */
+	void Set (const TCRC aCrc);
+	/**
+	 * Adds the write the package details into the stream.
+	 * @param aStream - Stream in which the package entries need to be written.
+	 * @param aVerbose - If this option is set then detail description of pkg
+	 * 			will be written into the stream.
+	 */
+	void AddPackageEntry(std::wostream& aStream, bool aVerbose) const;
+
+private:
+	CSISUInt16	iDataChecksum;
+	};
+
+
+template <CSISFieldRoot::TFieldType FieldType> inline
+	CChecksum <FieldType>::CChecksum (const bool aRequired) :
+		CStructure <FieldType> (aRequired)
+	{ 
+	InsertMember (iDataChecksum); 
+	}
+
+template <CSISFieldRoot::TFieldType FieldType> inline
+	CChecksum <FieldType>::CChecksum (const CChecksum& aInitialiser) :
+		CStructure <FieldType> (aInitialiser),
+		iDataChecksum (aInitialiser.iDataChecksum)
+	{ 
+	InsertMember (iDataChecksum); 
+	}
+
+template <CSISFieldRoot::TFieldType FieldType> inline
+		std::string CChecksum <FieldType>::Name () const
+	{
+	return "Checksum";
+	}
+
+template <CSISFieldRoot::TFieldType FieldType> inline
+		void CChecksum <FieldType>::Set (const TCRC aCrc)
+	{
+	iDataChecksum = aCrc; 
+	}
+
+
+template <CSISFieldRoot::TFieldType FieldType> inline
+	bool CChecksum <FieldType>::WasteOfSpace () const
+	{
+	return iDataChecksum.Value()? false: true;
+	}
+
+
+#ifdef GENERATE_ERRORS
+template <CSISFieldRoot::TFieldType FieldType>
+		void CChecksum <FieldType>::CreateDefects ()
+	{
+	if (IsBugToBeCreated (CSISFieldRoot::EBugCRCError))
+		{
+		iDataChecksum |= static_cast <TUint16> (rand () & 0xFFFF);
+		}
+	}
+#endif // GENERATE_ERRORS
+
+template <CSISFieldRoot::TFieldType FieldType> inline
+		void CChecksum <FieldType>::AddPackageEntry(std::wostream& aStream, bool aVerbose) const
+	{
+	if(aVerbose)
+		{
+		aStream << L"; CRC16: " << std::hex << iDataChecksum.Value() << std::dec << std::endl;
+		}
+	}
+
+#endif // __SISDATACHECKSUM_H__
+