--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/inc/cbcmode.h	Thu Sep 10 14:01:51 2009 +0300
@@ -0,0 +1,120 @@
+/*
+* 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.
+* CBC mode encryptor and decryptor implementation
+*
+*/
+
+
+/**
+ @file 
+ @publishedPartner
+ @released 
+*/
+ 
+#ifndef __CBCMODE_H__
+#define __CBCMODE_H__
+
+#include <mode.h>
+
+/**
+* Concrete subclass of CBlockChainingMode implementing CBC mode block chaining
+* for encryption.
+*
+*/
+class CModeCBCEncryptor : public CBlockChainingMode
+{
+public:
+	/**
+	* Creates an object of this class for CBC mode encryption.
+	*
+	* @param aBT	An appropriate CBlockTransformation derived encryptor.
+	* @param aIV	Initialization vector, the length of this descriptor must be
+	*				the same as the underlying cipher's block size.
+	* @return		A pointer to the new CModeCBCEncryptor object
+	*/
+	IMPORT_C static CModeCBCEncryptor* NewL(CBlockTransformation* aBT, 
+		const TDesC8& aIV);
+
+	/**
+	* Creates an object of this class for CBC mode encryption.
+	*
+	* The returned pointer is put onto the cleanup stack.
+	*
+	* @param aBT	An appropriate CBlockTransformation derived encryptor.
+	* @param aIV	Initialization vector, the length of this descriptor must be
+	*				the same as the underlying cipher's block size.
+	* @return		A pointer to the new CModeCBCEncryptor object
+	*/
+	IMPORT_C static CModeCBCEncryptor* NewLC(CBlockTransformation* aBT, 
+		const TDesC8& aIV);
+	virtual void Transform(TDes8& aBlock);	
+protected:
+	/**
+	 * @internalAll
+	 */
+	CModeCBCEncryptor();
+private:
+	const CModeCBCEncryptor& operator=(const CModeCBCEncryptor&);
+};
+
+/**
+* Concrete subclass of CBlockChainingMode implementing CBC mode block chaining
+* for decryption.
+*
+*/
+class CModeCBCDecryptor : public CBlockChainingMode
+{
+public:
+	/**
+	* Creates an object of this class for CBC mode decryption.
+	* 
+	* @param aBT	An appropriate CBlockTransformation derived decryptor.
+	* @param aIV	Initialization vector, the length of this descriptor must be
+	*				the same as the underlying cipher's block size.
+	* @return		A pointer to the CModeCBCDecryptor new object.
+	*/
+	IMPORT_C static CModeCBCDecryptor* NewL(CBlockTransformation* aBT, 
+		const TDesC8& aIV);
+
+	/**
+	* Creates an object of this class for CBC mode decryption.
+	*
+	* The returned pointer is put onto the cleanup stack.
+	* 
+	* @param aBT	An appropriate CBlockTransformation derived decryptor.
+	* @param aIV	Initialization vector, the length of this descriptor must be
+	*				the same as the underlying cipher's block size.
+	* @return		A pointer to the CModeCBCDecryptor new object.
+	*/
+	IMPORT_C static CModeCBCDecryptor* NewLC(CBlockTransformation* aBT, 
+		const TDesC8& aIV);
+	virtual ~CModeCBCDecryptor(void);
+public:
+	virtual void Transform(TDes8& aBlock);	
+protected:
+	/** @internalAll */
+	CModeCBCDecryptor();
+	/** @internalAll */
+	void ConstructL(CBlockTransformation* aBT, const TDesC8& aIV);
+private:
+	HBufC8* iIVBakBuf;
+	TPtr8 iIVBak;
+private:
+	const CModeCBCDecryptor& operator=(const CModeCBCDecryptor&);
+};
+
+#endif	//	__CBCMODE_H__