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  @file 

    24  @publishedPartner

    25  @released 

    26 */

    27  

    28 #ifndef __NULLCIPHER_H__

    29 #define __NULLCIPHER_H__

    30 

    31 #include <streamcipher.h>

    32 

    33 /**

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

    35 * data given to it.

    36 * From CBlockTransformation

    37 *

    38 */

    39 class CNullCipher : public CStreamCipher

    40 {

    41 public:	

    42 	/**

    43 	 * Creates a new CNullCipher object.

    44 	 * 

    45 	 * @return	A pointer to a new CNullCipher object

    46 	 */

    47 	IMPORT_C static CNullCipher* NewL(void);

    48 

    49 	/**

    50 	 * Creates a new CNullCipher object.

    51 	 * 

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

    53 	 * 

    54 	 * @return	A pointer to a new CNullCipher object

    55 	 */

    56 	IMPORT_C static CNullCipher* NewLC(void);

    57 	virtual void Reset(void);

    58 	virtual TInt KeySize(void) const;

    59 protected:

    60 	virtual void DoProcess(TDes8& aData);

    61 	/**

    62 	 * @internalAll

    63 	 */

    64 	CNullCipher();

    65 };

    66 

    67 #endif	//	__NULLCIPHER_H__