diff -r 000000000000 -r ba25891c3a9e installationservices/swi/inc/swi/sishash.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/installationservices/swi/inc/swi/sishash.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,145 @@
+/*
+* 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: 
+* Definition of the Swi::Sis::CHash#
+*
+*/
+
+
+/**
+ @file 
+ @released
+ @internalTechnology
+*/
+
+#ifndef __SISHASH_H__
+#define __SISHASH_H__
+
+#include <e32base.h>
+#include "sisfield.h"
+#include "sisblob.h"
+
+namespace Swi
+{
+namespace Sis
+ {
+
+ class TPtrProvider;
+
+/**
+ * This class represents a Sishash. Sishash is a basic structure found in  files.
+ * It is described in SGL.GT0188.251.
+ *
+ * @released
+ * @publishedPartner
+ */
+class CHash : public CField
+	{
+public:
+
+	/**
+	 * This creates a new CHash object.
+	 *
+	 * @param aDataProvider 	 An instance of a MSisDataProvider to read the entity from.
+	 * @param aTypeReadBehaviour Whether we need to check the sis type or not.
+	 *
+	 * @return An instance of CHash representing the data read.	 	 	 	 	 
+	 */
+	IMPORT_C static CHash* NewL(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour = EReadType);
+
+	/**
+	 * This creates a new CHash object and places it on the cleanup stack.
+	 *
+	 * @param aDataProvider 	 An instance of a MSisDataProvider to read the entity from.
+	 * @param aTypeReadBehaviour Whether we need to check the sis type or not.
+	 *
+	 * @return An instance of CHash representing the data read.	 	 	 	 	 
+	 */
+	IMPORT_C static CHash* NewLC(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour = EReadType);
+
+	/**
+	 * This creates a new CHash object in place.
+	 *
+	 * @param aDataProvider 	 An instance of a TPtrProvider to read the entity from.
+	 * @param aTypeReadBehaviour Whether we need to check the sis type or not.
+	 *
+	 * @return An instance of CHash representing the data read.	 	 	 	 	 
+	 */
+	
+	IMPORT_C static CHash* NewL(TPtrProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour = EReadType);
+
+	/**
+	 * This creates a new CHash object in place and places it on the cleanup stack.
+	 *
+	 * @param aDataProvider 	 An instance of a TPtrProvider to read the entity from.
+	 * @param aTypeReadBehaviour Whether we need to check the sis type or not.
+	 *
+	 * @return An instance of CHash representing the data read.	 	 	 	 	 
+	 */
+
+	IMPORT_C static CHash* NewLC(TPtrProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour = EReadType);
+
+	IMPORT_C virtual ~CHash();
+	
+public: // Accessor
+
+	inline TSISHashAlgorithm Algorithm() const;
+
+	inline const TDesC8& Data() const;
+
+private:
+
+	CHash();
+
+	/**
+	 * The second-phase constructor.
+	 *
+	 * @param aDataProvider		 An instance of a MSisDataProvider to read the entity from.
+	 * @param aTypeReadBehaviour Whether we need to check the sis type or not.
+	 */
+	void ConstructL(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour);
+
+	/**
+	 * The second-phase constructor.
+	 *
+	 * @param aDataProvider		 An instance of a TPtrProvider to read the entity from.
+	 * @param aTypeReadBehaviour Whether we need to check the sis type or not.
+	 */
+	
+	void ConstructL(TPtrProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour);
+
+private:
+	TSISHashAlgorithm iAlgorithm;
+	
+	CBlob* iBlob;
+	};
+
+// inline functions from CHash
+
+TSISHashAlgorithm CHash::Algorithm() const
+	{
+	return iAlgorithm;
+	}
+
+const TDesC8& CHash::Data() const
+	{
+	return iBlob->Data();	
+	}
+
+ } // namespace Sis
+} //namespace Swi
+
+
+
+#endif