Symaptic: os/security/crypto/weakcryptospi/source/symmetric/cbcmodeshim.h@260cb5ec6c19

     1 /*

     2 * Copyright (c) 2006-2009 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 *

    16 */

    19 #ifndef __CBCMODESHIM_H__

    20 #define __CBCMODESHIM_H__

    22 #include <cbcmode.h>

    24 /**

    25 @file

    26 @internalComponent

    27 @released

    28 */

    30 namespace CryptoSpi

    31 	{

    32 	class CSymmetricCipher;

    33 	}

    35 /**

    36 CBC mode encryptor shim class that delegates all work to CModeCBCEncryptor.

    37 This should only be instantiated by CModeCBCEncryptor::NewLC

    38 */

    39 NONSHARABLE_CLASS(CModeCBCEncryptorShim) : public CModeCBCEncryptor

    40 {

    41 public:

    42 	/**

    43 	Creates a new CModeCBCEncryptorShim. If the block transfer

    44 	@param aBT A pointer to the block transform object.

    45 	@param aIV The initialisation vector to use.

    46 	@return A pointer to a CModeCBCEncryptorShim instance or NULL if the block transform

    47 	does not support SPI or the SPI plug-in does not support CBC mode

    48 	*/

    49 	static CModeCBCEncryptorShim* NewL(CBlockTransformation* aBT, const TDesC8& aIV);

    51 	// From CBase

    52 	TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);

    54 	// From CBlockTransformation

    55 	void Reset();

    56 	TInt BlockSize() const;

    57 	TInt KeySize() const;

    58 	void Transform(TDes8& aBlock);

    60 	// From CBlockChainingMode

    61 	void SetIV(const TDesC8& aIv);

    63 private:

    64 	/// Constructor

    65 	CModeCBCEncryptorShim(CryptoSpi::CSymmetricCipher* aSymmetricCipherImpl);

    67 	// Just invokes ContructL in super-class

    68 	void ConstructL(CBlockTransformation* aBT, const TDesC8& aIv);

    70 	// owned by block transform - iBT

    71 	CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;

    72 };

    74 /**

    75 CBC mode decryptor shim class that delegates all work to CModeCBCDecryptor.

    76 This should only be instantiated by CModeCBCDecryptor::NewLC

    77 */

    78 NONSHARABLE_CLASS(CModeCBCDecryptorShim) : public CModeCBCDecryptor

    79 {

    80 public:

    81 	/**

    82 	Creates a new CModeCBCEncryptorShim.

    83 	@param aBT A pointer to the block transform object.

    84 	@param aIV The initialisation vector to use.

    85 	@return A pointer to a CModeCBCDecryptorShim instance or NULL if the block transform

    86 	does not support SPI or the SPI plug-in does not support CBC mode

    87 	*/

    88 	static CModeCBCDecryptorShim* NewL(CBlockTransformation* aBT, const TDesC8& aIV);

    90 	// From CBase

    91 	TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);

    93 	// From CBlockTransformation

    94 	void Reset();

    95 	TInt BlockSize() const;

    96 	TInt KeySize() const;

    97 	void Transform(TDes8& aBlock);

    99 	// From CBlockChainingMode

   100 	void SetIV(const TDesC8& aIv);

   102 private:

   103 	/// Constructor

   104 	CModeCBCDecryptorShim(CryptoSpi::CSymmetricCipher* aSymmetricCipherImpl);

   106 	// Just invokes ContructL in super-class

   107 	void ConstructL(CBlockTransformation* aBT, const TDesC8& aIv);

   109 	// owned by block transform - iBT

   110 	CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;

   111 };

   113 #endif	//	__CBCMODESHIM_H__

author	sl
	Tue, 10 Jun 2014 14:32:02 +0200
changeset 1	260cb5ec6c19
permissions	-rw-r--r--