/*

 * 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: 

 *

 */

 /**

  @file

  @publishedPartner

  @released

 */

 #ifndef __PKCS12KDF_H__

 #define __PKCS12KDF_H__

 #include <e32std.h>

 class PKCS12KDF

 /**

 	Namespace class contains static functions which

 	are used to generate a key for PKCS#12 operations.

 	See Section B from PKCS 12 v1.0.

  */

 	{

 public:

 	enum TIDByteType

 	/**

 		ID byte value used to generate (en|de)cryption key,

 		IV, or MAC key.  See SB.3 of spec.

 	 */

 		{

 		/** Generates a key for (en|de)cryption. */

 		EIDByteEncryptKey = 1,

 		/** Generates an initialization vector. */

 		EIDByteIV = 2,

 		/** Generates a key for MAC-ing. */

 		EIDByteMACKey = 3

 		};

 public:

 	IMPORT_C static void DeriveKeyL(

 		TDes8& aKey, TIDByteType aIDType,

 		const TDesC8& aPasswd, const TDesC8& aSalt, const TUint aIterations);

 	IMPORT_C static HBufC8* GeneratePasswordLC(const TDesC& aDes);

 private:

 	static void Process6cL(TDes8& Ij, const TDesC8& B, TInt v);

 #ifdef _DEBUG

 	enum TPanic

 		{

 		EDKEmptyPswd = 0x10, EDKOddPswdByteCount, EDKBadNullTerminator

 		};

 	static void Panic(TPanic aPanic);

 #endif

 	// not implemented - prevents instantiation

 	PKCS12KDF();

 	};

 #endif	// #ifndef __PKCS12KDF_H__