--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/inc/blocktransformation.h	Thu Sep 10 14:01:51 2009 +0300
@@ -0,0 +1,84 @@
+/*
+* Copyright (c) 2002-2009 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: 
+* ** IMPORTANT ** PublishedPartner API's in this file are published to 3rd party developers via the 
+* Symbian website. Changes to these API's should be treated as PublishedAll API changes and the Security TA should be consulted.
+* CBlockTransformation class implementation
+*
+*/
+
+
+/**
+ @file 
+ @publishedPartner
+* @released
+*/
+ 
+#ifndef	__BLOCKTRANSFORMATION_H__
+#define	__BLOCKTRANSFORMATION_H__
+
+#include <e32base.h>
+
+#ifndef SYMBIAN_ENABLE_SPLIT_HEADERS
+/** The maximum block size supported (in bytes) */
+const TUint KMaxBlockSizeSupported = 32;
+#endif
+
+/**
+* Abstract base class defining the interface to block transformation schemes.
+*
+* Block transformation schemes process a fixed-size block of input to return a
+* block of output the same size.  
+*
+*/
+class CBlockTransformation : public CBase
+{
+public:
+	/**
+	* Transforms the supplied block, returning the new value using the same
+	* parameter. aBlock.Size() must be the same length as BlockSize().
+	*
+	* @param aBlock	On input, the data to be transformed;
+	*				on return, the data after transformation.
+	*/
+	virtual void Transform(TDes8& aBlock) = 0;
+	
+	/**
+	* Resets the transformation back to its original state. Clears all its buffers.
+	*/	
+	virtual void Reset() = 0;
+	
+	/**
+	* Gets the block size in bytes.
+	*
+	* @return	Block size in bytes.
+	*/
+	virtual TInt BlockSize() const = 0;
+	
+	/**
+	* Gets the key size in bits.	
+	* 
+	* @return	Key size in bits.
+	*/
+	virtual TInt KeySize() const = 0;
+
+	/**
+	@internalComponent
+	Used to retrieve the extended interfaces by id. For Crypto
+	SPI internal use only.
+	*/		
+	TInt GetExtension(TUint aExtensionId, TAny*& a0, TAny* a1);	
+};
+
+#endif	//	__BLOCKTRANSFORMATION_H__