--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/inc/mode.h	Thu Sep 10 14:01:51 2009 +0300
@@ -0,0 +1,104 @@
+/*
+* 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.
+*
+*/
+
+
+/**
+ @file 
+ @publishedPartner
+ @released 
+*/
+ 
+#ifndef __MODE_H__
+#define __MODE_H__
+
+#include <blocktransformation.h>
+
+/**
+* Abstract class defining the use of block transformation objects as block
+* chaining modes.
+*
+* It is initialised with a subclass of CBlockTransformation,
+* which it subsequently owns.  Calls to its Transform() function will call the
+* Transform() function in the underlying CBlockTransformation object, and perform
+* the additional transformation for block chaining in that mode.  This all means
+* that if you want to do, say, AES encryption in CBC mode, you need to construct
+* a CAESEncryptor object, then pass it to the CModeCBCEncryptor subclass of
+* CBlockChainingMode, and subsequently use the CModeCBCEncryptor object to call
+* Transform().
+* 
+* @publishedPartner
+* @released 
+*/
+class CBlockChainingMode : public CBlockTransformation
+{
+public:
+	virtual void Reset();
+	virtual TInt BlockSize() const;
+	virtual TInt KeySize() const;
+public:
+	/**
+	* Sets the initialization vector.
+	* 
+	* @param aIV	The initialization vector.  The length of this descriptor must be
+	*				the same as the underlying cipher's block size.
+	*/
+	virtual void SetIV(const TDesC8& aIV);
+protected:
+	/** Default constructor */
+	IMPORT_C CBlockChainingMode();
+	/** 
+	 * Second phase constructor
+	 * 
+	 * This should be called last by derived classes' ContructL()s .
+	 *
+	 * @param aBT	A block transformation object
+	 * @param aIV	Initialization vector, the length of this descriptor must be
+	 *				the same as the underlying cipher's block size.
+	 */
+	IMPORT_C void ConstructL(CBlockTransformation* aBT, const TDesC8& aIV);
+	
+	/** The destructor frees all resources owned by the object, prior to its destruction. */
+	IMPORT_C virtual ~CBlockChainingMode();
+protected:
+	/** A block transformation object */
+	CBlockTransformation* iBT;
+
+	/** 
+	 * A buffer containing the feedback register
+	 *
+	 * This must equal the underlying cipher's block size in length. 
+	 * Initially this register is filled with the initialization vector.
+	 */
+	HBufC8* iRegisterBuf;
+
+	/** Encapsulates a pointer to iRegisterBuf */
+	TPtr8 iRegister;
+
+	/** 
+	 * A buffer containing the Initialisation Vector (IV) 
+	 *
+	 * This must equal the underlying cipher's block size in length. 
+	 */
+	HBufC8* iIVBuf;
+
+	/** Encapsulates a pointer to iIVBuf */
+	TPtr8 iIV;
+};
+
+#endif	//	__MODE_H__