1 /*

     2 * Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * ** IMPORTANT ** PublishedPartner API's in this file are published to 3rd party developers via the 

    16 * Symbian website. Changes to these API's should be treated as PublishedAll API changes and the Security TA should be consulted.

    17 * CNullCipher class implementation

    18 *

    19 */

    20 

    21 

    22 

    23 

    24 /**

    25  @file 

    26  @internalAll

    27 */

    28  

    29 #ifndef __NULLCIPHER_H__

    30 #define __NULLCIPHER_H__

    31 

    32 #include "streamcipher.h"

    33 

    34 /**

    35 * Stream cipher that does no encryption or decryption, but simply returns the

    36 * data given to it.

    37 * From CBlockTransformation

    38 *

    39 * @publishedPartner

    40 * @released 

    41 */

    42 class CNullCipher : public CStreamCipher

    43 {

    44 public:	

    45 	/**

    46 	 * Creates a new CNullCipher object.

    47 	 * 

    48 	 * @return	A pointer to a new CNullCipher object

    49 	 */

    50 	IMPORT_C static CNullCipher* NewL(void);

    51 

    52 	/**

    53 	 * Creates a new CNullCipher object.

    54 	 * 

    55 	 * The returned pointer is put onto the cleanup stack.

    56 	 * 

    57 	 * @return	A pointer to a new CNullCipher object

    58 	 */

    59 	IMPORT_C static CNullCipher* NewLC(void);

    60 	virtual void Reset(void);

    61 	virtual TInt KeySize(void) const;

    62 protected:

    63 	virtual void DoProcess(TDes8& aData);

    64 	/**

    65 	 * @internalAll

    66 	 */

    67 	CNullCipher();

    68 };

    69 

    70 #endif	//	__NULLCIPHER_H__