crypto/weakcryptospi/inc/pbe.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 24 Nov 2009 09:06:03 +0200
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/*
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* Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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* ** IMPORTANT ** PublishedPartner API's in this file are published to 3rd party developers via the 
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* Symbian website. Changes to these API's should be treated as PublishedAll API changes and the Security TA should be consulted.
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*
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*/
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/**
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 @file
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 @publishedPartner
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 @released
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*/
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#ifndef __PBE_H__
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#define __PBE_H__
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#include <e32std.h>
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#include <pbebase.h>
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class CPBEncryptionData;
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class CPBEncryptor;
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class CPBDecryptor;
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/** 
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 * Password Based Encryption ciphers.
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 *
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 * Note that RC2 has an additional key parameter, the "effective key length".
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 *
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 * Used in the construction of CPBEncryptElement, CPBEncryptSet, CPBEncryptParms,
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 * and CPBEncryptionData objects and in the CPBEncryptParms::Cipher() function.
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 */
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enum TPBECipher
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	{
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	/** AES cipher in CBC mode with a supplied key size of 128 bits. */
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	ECipherAES_CBC_128,
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	/** AES cipher in CBC mode with a supplied key size of 192 bits. */
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	ECipherAES_CBC_192,
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	/** AES cipher in CBC mode with a supplied key size of 256 bits. */
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	ECipherAES_CBC_256,
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	/** DES cipher in CBC mode (with a supplied key size of 56 bits). */
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	ECipherDES_CBC,
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	/** Triple-DES cipher in CBC mode. */
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	ECipher3DES_CBC,
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	/** 
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	 * RC2 cipher in CBC mode with a supplied key length of 40 bits.
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	 * 
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	 * It has an effective key length of 1024 bits (128 bytes), which is compatible
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	 * with OpenSSL RC2 encryption.
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	 */
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	ECipherRC2_CBC_40, 
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	/**
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	 * RC2 cipher in CBC mode with a supplied key length of 128 bits. 
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	 * 
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	 * It has an effective key length of 1024 bits (128 bytes), which is compatible
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	 * with OpenSSL RC2 encryption.
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	 */
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	ECipherRC2_CBC_128,
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	/**
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	 * RC2 cipher in CBC mode with a supplied key length of 40 bits.
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	 * 
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	 * It has an effective key length of 128 bits (16 bytes), which is compatible 
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	 * with the RC2 encryption used in PKCS#8 encryption keys generated by OpenSSL
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	 */
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	ECipherRC2_CBC_40_16,
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	/**
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	 * RC2 cipher in CBC mode with a supplied key length of 128 bits. 
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	 * 
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	 * It has an effective key length of 128 bits (16 bytes), which is compatible 
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	 * with the RC2 encryption used in PKCS#8 encryption keys generated by OpenSSL
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	 */
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	ECipherRC2_CBC_128_16,
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	/**
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	 * ARC4 cipher with a supplied key length of 128 bits. 
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	 * PKCS#12 PBE encryption algorithm 
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	 */
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	ECipherARC4_128,
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	/**
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	 * ARC4 cipher with a supplied key length of 40 bits. 
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	 * PKCS#12 PBE encryption algorithm 
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	 */
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    ECipherARC4_40,    
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	/**
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	 * 2_KeyTriple-DES cipher in CBC mode. 
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	 * PKCS#12 PBE encryption algorithm
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	 */
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    ECipher2Key3DES_CBC,
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	/** 
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	 *	RC2 Cipher in CBC mode with a supplied & effective key length of 40 bits. 
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	 *  PKCS#12 PBE encryption algorithm
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	 */
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    ECipherRC2_CBC_40_5,
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    };
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/** 
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 * Allows the password based encryption and decryption of elements.
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 * Contains the encryption key and its associated encryption data.
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 * See the Cryptography api-guide documentation for more information 
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 * and sample code.
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 */
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class CPBEncryptElement : public CPBEncryptionBase
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	{
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public:
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	/**
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	 * Creates a new CPBEncryptElement object for encryption of new data.
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	 *
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	 * If strong cryptography is present, a 128 bit AES cipher is used; 
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	 * otherwise, for weak cryptography, a 56 bit DES cipher is used.
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	 *
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	 * The symmetric key is derived from the password and a random salt using TPKCS5KDF::DeriveKeyL().
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	 * 
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	 * @param aPassword	The user supplied password
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	 * @return			The new CPBEncryptElement object
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	 */
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	IMPORT_C static CPBEncryptElement* NewL(const TPBPassword& aPassword);
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	/**
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	 * Creates a new CPBEncryptElement object for encryption of new data.
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	 * 
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	 * If strong cryptography is present, a 128 bit AES cipher is used; 
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	 * otherwise, for weak cryptography, a 56 bit DES cipher is used.
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	 *
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	 * The symmetric key is derived from the password and a random salt using TPKCS5KDF::DeriveKeyL().
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	 *
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	 * A pointer to the returned object is put onto the cleanup stack.
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	 *
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	 * @param aPassword	The user supplied password
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	 * @return			The new CPBEncryptElement object
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	 */
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	IMPORT_C static CPBEncryptElement* NewLC(const TPBPassword& aPassword);
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	/**
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	 * Creates a new CPBEncryptElement object for encryption of new data.
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	 *
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	 * The symmetric key is derived from the password and a random salt using TPKCS5KDF::DeriveKeyL().
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	 * 
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	 * @param aPassword	The user supplied password
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	 * @param aCipher	The cipher to use
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	 * @return			The new CPBEncryptElement object
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	 */
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	IMPORT_C static CPBEncryptElement* NewL(const TPBPassword& aPassword, 
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		TPBECipher aCipher);
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	/**
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	 * Creates a new CPBEncryptElement object for encryption of new data.
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	 *
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	 * The symmetric key is derived from the password and a random salt using TPKCS5KDF::DeriveKeyL().
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	 * 
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	 * A pointer to the returned object is put onto the cleanup stack.
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	 *
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	 * @param aPassword	The user supplied password
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	 * @param aCipher	The cipher to use
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	 * @return			The new CPBEncryptElement object
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	 */
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	IMPORT_C static CPBEncryptElement* NewLC(const TPBPassword& aPassword, 
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		TPBECipher aCipher);
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	/**
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	 * Creates a new CPBEncryptElement object for encryption of new data.
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	 *
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	 * The symmetric key is derived from the password using TPKCS5KDF::DeriveKeyL().
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	 * 
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	 * @param aPassword	The user supplied password
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	 * @param aParms	An encryption parameter object comprising the cipher,
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	 *					salt, IV, and iteration count value. 
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	 * @return			The new CPBEncryptElement object
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	 */
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	IMPORT_C static CPBEncryptElement* NewL(const TPBPassword& aPassword, 
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		const CPBEncryptParms& aParms);
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	/**
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	 * Creates a new CPBEncryptElement object for encryption of new data.
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	 *
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	 * The symmetric key is derived from the password using TPKCS5KDF::DeriveKeyL().
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	 * 
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	 * A pointer to the returned object is put onto the cleanup stack.
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	 *
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	 * @param aPassword	The user supplied password
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	 * @param aParms	An encryption parameter object comprising the cipher,
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	 *					salt, IV, and iteration count value. 
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	 * @return			The new CPBEncryptElement object
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	 */
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	IMPORT_C static CPBEncryptElement* NewLC(const TPBPassword& aPassword, 
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		const CPBEncryptParms& aParms);
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	/**
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	 * Creates a new CPBEncryptElement object for decryption of existing data.
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	 *
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	 * If the specified password is valid, the function regenerates the encryption key;
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	 * otherwise, it leaves with KErrBadPassphrase.
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	 *
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	 * @param aData				The encryption data object
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	 * @param aPassword			The user supplied password
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	 * @return					The new CPBEncryptElement object
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	 * @leave KErrBadPassphrase	If the specified password is incorrect
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	 */
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	IMPORT_C static CPBEncryptElement* NewL(const CPBEncryptionData& aData,
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		const TPBPassword& aPassword);
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	/**
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	 * Creates a new CPBEncryptElement object for decryption of existing data.
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	 *
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	 * If the specified password is valid, the function regenerates the encryption key;
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	 * otherwise, it leaves with KErrBadPassphrase.
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	 *
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	 * A pointer to the returned object is put onto the cleanup stack.
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	 *
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	 * @param aData				The encryption data object
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	 * @param aPassword			The user supplied password
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	 * @return					The new CPBEncryptElement object
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	 * @leave KErrBadPassphrase	If the specified password is incorrect
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	 */
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	IMPORT_C static CPBEncryptElement* NewLC(const CPBEncryptionData& aData,
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		const TPBPassword& aPassword);
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	/** 
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	 * Gets the parameters allowing one to re-create the object with the
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	 * same state at another point in the future.  
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	 * 
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	 * In order to decrypt any information previously encrypted with this object, 
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	 * you <B><I>must</I></B> store this encryption data along with it. Failure 
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	 * to do this will result in the permanent loss of the encrypted information.
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	 * 
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	 * @return The data allowing one to re-create this object at a later time.					
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	 */
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	const CPBEncryptionData& EncryptionData(void) const;
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	/** 
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	 * Constructs a CPBEncryptor object allowing the encryption of data.
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	 * 
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	 * @return	A pointer to a CPBEncryptor object.
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	 *			The caller assumes ownership of the returned object.
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	 */
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	CPBEncryptor* NewEncryptL(void) const;
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	/** 
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	 * Constructs a CPBEncryptor object allowing the encryption of data.
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	 * 
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	 * @return	A pointer to a CPBEncryptor object.
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	 *			The caller assumes ownership of the returned object.
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	 *			The returned pointer is left on the cleanup stack.
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	 */
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	CPBEncryptor* NewEncryptLC(void) const;
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	/** 
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	 * Constructs a CPBDecryptor object allowing the decryption of data.
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	 * 
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	 * @return	A pointer to a CPBDecryptor object.
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	 *			The caller assumes ownership of the returned object.
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	 */
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	CPBDecryptor* NewDecryptL(void) const;
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	/** 
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	 * Constructs a CPBDecryptor object allowing the decryption of data.
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	 * 
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	 * @return	A pointer to a CPBDecryptor object.
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	 *			The caller assumes ownership of the returned object.
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	 *			The returned pointer is left on the cleanup stack.
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	 */
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	CPBDecryptor* NewDecryptLC(void) const;
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	/** 
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	 * Gets the maximum output ciphertext length given a specified input plaintext length.  
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	 * 
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	 * @param aPlaintextLength	The plaintext length 
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	 * @return					The maximum ciphertext length given a plaintext length.
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	 */
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	TInt MaxCiphertextLength(TInt aPlaintextLength) const;
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	/** 
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	 * Gets the maximum output plaintext length given a specified input ciphertext length.
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	 *
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	 * @param aCiphertextLength	The ciphertext length
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	 * @return					The maximum plaintext length given a ciphertext length.
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	 */
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	TInt MaxPlaintextLength(TInt aCiphertextLength) const;
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	/** Destructor */
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	virtual ~CPBEncryptElement(void);
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protected:
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	/** @internalAll */
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	void ConstructL(const TDesC8& aPassword);
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	/** @internalAll */
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	void ConstructL(const TDesC8& aPassword, const TPBECipher aCipher);
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	/** @internalAll */
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	void ConstructL(const TDesC8& aPassword, const CPBEncryptParms& aParms);
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	/** @internalAll */
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	void ConstructL(const CPBEncryptionData& aData, const TPBPassword& aPassword);
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	/** @internalAll */
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	TBool AuthenticateL(const TPBPassword& aPassword);
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	/** @internalAll */
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	void MakeEncryptKeyL(TUint aKeySize, const TDesC8& aPassword);
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	/** @internalAll */
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	CPBEncryptElement(void);
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protected:
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	/** The encryption data */
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	CPBEncryptionData* iData;
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	/** The derived encryption key */
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	HBufC8* iEncryptKey;
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private:
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	CPBEncryptElement(const CPBEncryptElement&);
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	CPBEncryptElement& operator= (const CPBEncryptElement&);
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	};
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/** 
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 * Derived class to allow the efficient password based encryption and
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 * decryption of multiple elements.
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 * 
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 * This is useful if one wants random access to an encrypted source consisting 
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 * of multiple independent elements, for example, a database or a store. 
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 * 
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 * Since it is unreasonable to force the decryption of an entire set to allow 
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 * access to just a tiny portion of it, and since it is too costly to derive separate 
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 * keys for each element within the set, a single randomly generated <I>master</I> 
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 * key is used.  This master key is encrypted with the password provided by the 
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 * user of the class. Known plaintext attacks against the ciphertext are prevented 
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 * by using a randomly chosen Initialisation Vector (IV) for each element.  
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 * 
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 * Contains the master encryption key.
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 *
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 * See the Cryptography api-guide documentation for more information and sample code.
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 *
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 * @see CPBEncryptElement
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 * 
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 * @since v8.0
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 */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
class CPBEncryptSet : public CPBEncryptElement
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
	{
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   341
public:
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   342
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   343
	 * Creates a new CPBEncryptSet object for encryption of new data 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   344
	 * (and generates an encrypted master key).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
	 * If strong cryptography is present, a 128 bit AES cipher is used; 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
	 * otherwise, for weak cryptography, a 56 bit DES cipher is used.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
	 * The symmetric key is derived from the password and a random salt using TPKCS5KDF::DeriveKeyL().
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   351
	 * @param aPassword	The users password.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   352
	 * @return			A new CPBEncryptSet object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   353
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   354
	IMPORT_C static CPBEncryptSet* NewL(const TPBPassword& aPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   356
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   357
	 * Creates a new CPBEncryptSet object for encryption of new data 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
	 * (and generates an encrypted master key).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
	 * The returned pointer is put onto the cleanup stack.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
	 * If strong cryptography is present, a 128 bit AES cipher is used; 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
	 * otherwise, for weak cryptography, a 56 bit DES cipher is used.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
	 * The symmetric key is derived from the password and a random salt using TPKCS5KDF::DeriveKeyL().
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
	 * @param aPassword	The user supplied password
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
	 * @return			The new CPBEncryptSet object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
	IMPORT_C static CPBEncryptSet* NewLC(const TPBPassword& aPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
	 * Creates a new CPBEncryptSet object for encryption of new data 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
	 * (and generates an encrypted master key).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
	 * The symmetric key is derived from the password and a random salt using TPKCS5KDF::DeriveKeyL().
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
	 * @param aPassword	The user supplied password
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
	 * @param aCipher	The cipher to use
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
	 * @return			The new CPBEncryptSet object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
	IMPORT_C static CPBEncryptSet* NewL(const TPBPassword& aPassword, 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
		TPBECipher aCipher);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
	 * Creates a new CPBEncryptSet object for encryption of new data 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
	 * (and generates an encrypted master key).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
	 * The returned pointer is put onto the cleanup stack.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
	 * The symmetric key is derived from the password and a random salt using TPKCS5KDF::DeriveKeyL().
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
	 * @param aPassword	The user supplied password
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
	 * @param aCipher	The cipher to use
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
	 * @return			The new CPBEncryptSet object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
	IMPORT_C static CPBEncryptSet* NewLC(const TPBPassword& aPassword, 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
		TPBECipher aCipher);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
	 * Creates a new CPBEncryptSet object for encryption of new data 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
	 * (and generates an encrypted master key).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
	 * The symmetric key is derived from the password using TPKCS5KDF::DeriveKeyL().
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
	 * @param aPassword	The user supplied password
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
	 * @param aParms	An encryption parameter object comprising the cipher,
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
	 *					salt, IV, and iteration count value. 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
	 * @return			The new CPBEncryptSet object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
	IMPORT_C static CPBEncryptSet* NewL(const TPBPassword& aPassword, 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412
		const CPBEncryptParms& aParms);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
	 * Creates a new CPBEncryptSet object for encryption of new data 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
	 * (and generates an encrypted master key).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
	 * The returned pointer is put onto the cleanup stack.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
	 * The symmetric key is derived from the password using TPKCS5KDF::DeriveKeyL().
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
	 * @param aPassword	The user supplied password
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
	 * @param aParms	An encryption parameter object comprising the cipher,
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
	 *					salt, IV, and iteration count value. 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
	 * @return			The new CPBEncryptSet object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
	IMPORT_C static CPBEncryptSet* NewLC(const TPBPassword& aPassword, 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
		const CPBEncryptParms& aParms);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
	 * Creates a new CPBEncryptSet object for encryption of new data 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   432
	 * (and generates an encrypted master key).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   433
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
	 * If the specified password is valid, the function regenerates the encryption key;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
	 * otherwise, it leaves with KErrBadPassphrase.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
	 * @param aData					The encryption data object to copy 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
	 * @param aEncryptedMasterKey	On return, the encrypted master key
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
	 * @param aPassword				The user supplied password
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
	 * @return						The new CPBEncryptSet object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
	 * @leave KErrBadPassphrase		If the specified password is incorrect
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
	IMPORT_C static CPBEncryptSet* NewL(const CPBEncryptionData& aData,
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
		const TDesC8& aEncryptedMasterKey, const TPBPassword& aPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
	 * Creates a new CPBEncryptSet object for encryption of new data 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
	 * (and generates an encrypted master key).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
	 * The returned pointer is put onto the cleanup stack.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
	 * If the specified password is valid, the function regenerates the encryption key;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
	 * otherwise, it leaves with KErrBadPassphrase.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
	 * @param aData					The encryption data object to copy 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
	 * @param aEncryptedMasterKey	On return, the encrypted master key
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
	 * @param aPassword				The user supplied password
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
	 * @return						The new CPBEncryptSet object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
	 * @leave KErrBadPassphrase		If the specified password is incorrect
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   460
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   461
	IMPORT_C static CPBEncryptSet* NewLC(const CPBEncryptionData& aData,
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
		const TDesC8& aEncryptedMasterKey, const TPBPassword& aPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
	
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   464
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
	 * Gets the encrypted form of the master key.  
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
	 * This must be stored along with the object returned by CPBEncryptElement::EncryptionData() 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   468
	 * in order for the object to be reconstructed with the same state at
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   469
     * some time in the future. Failure to do so will result in the permanent
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   470
     * loss of any information encrypted with this object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   471
     * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   472
     * @return		The encrypted master key.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   473
     */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   474
	IMPORT_C const TDesC8& EncryptedMasterKey(void) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   475
	
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   476
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   477
	 * Constructs a CPBEncryptor object based on the state of this object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   478
	 * (i.e., the cipher and master key) allowing the encryption of data.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   479
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   480
	 * @return	A pointer to a CPBEncryptor object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   481
	 *			The caller assumes ownership of the returned object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   482
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   483
	CPBEncryptor* NewEncryptL(void) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   484
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   485
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   486
	 * Constructs a CPBEncryptor object based on the state of this object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   487
	 * (i.e., the cipher and master key) allowing the encryption of data.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   488
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   489
	 * @return	A pointer to a CPBEncryptor object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   490
	 *			The caller assumes ownership of the returned object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   491
	 *			The returned pointer is left on the cleanup stack.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   492
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   493
	CPBEncryptor* NewEncryptLC(void) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   494
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   495
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   496
	 * Constructs a CPBDecryptor object based on the state of this object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   497
	 * (i.e., the cipher and master key) allowing the decryption of data.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   498
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   499
	 * @return	A pointer to a CPBDecryptor object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   500
	 *			The caller assumes ownership of the returned object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   501
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   502
	CPBDecryptor* NewDecryptL(void) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   503
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   504
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   505
	 * Constructs a CPBDecryptor object based on the state of this object
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   506
	 * (i.e., the cipher and master key) allowing the decryption of data.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   507
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   508
	 * @return	A pointer to a CPBDecryptor object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   509
	 *			The caller assumes ownership of the returned object.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   510
	 *			The returned pointer is left on the cleanup stack.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   511
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   512
	CPBDecryptor* NewDecryptLC(void) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   513
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   514
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   515
     * Re-encrypts the master key with the specified new password.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   516
     *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   517
     * @param aNewPassword	The new password
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   518
     */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   519
	IMPORT_C void ChangePasswordL(const TPBPassword& aNewPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   520
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   521
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   522
	 * Gets the maximum output ciphertext length given a specified input plaintext length.  
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   523
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   524
	 * @param aPlaintextLength	The plaintext length 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   525
	 * @return					The maximum ciphertext length given a plaintext length.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   526
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   527
	TInt MaxCiphertextLength(TInt aPlaintextLength) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   528
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   529
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   530
	 * Gets the maximum output plaintext length given a specified input ciphertext length.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   531
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   532
	 * @param aCiphertextLength	The ciphertext length
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   533
	 * @return					The maximum plaintext length given a ciphertext length.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   534
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   535
	TInt MaxPlaintextLength(TInt aCiphertextLength) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   536
	
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   537
	/** Destructor */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   538
	virtual ~CPBEncryptSet(void);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   539
protected:
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   540
	/** @internalAll */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   541
	void ConstructL(const TDesC8& aPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   542
	/** @internalAll */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   543
	void ConstructL(const TDesC8& aPassword, TPBECipher aCipher);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   544
	/** @internalAll */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   545
	void ConstructL(const TDesC8& aPassword, const CPBEncryptParms& aParms);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   546
	/** @internalAll */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   547
	void ConstructMasterKeyL(void);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   548
	/** @internalAll */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   549
	void ConstructL(const CPBEncryptionData& aData, 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   550
		const TDesC8& aEncryptedMasterKey, const TPBPassword& aPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   551
	/** @internalAll */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   552
	void DecryptMasterKeyL(TDes8& aMasterKey) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   553
	/** @internalAll */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   554
	void EncryptMasterKeyL(const TDesC8& aMasterKey);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   555
protected:
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   556
	/** @internalAll */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   557
	CPBEncryptSet(void);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   558
	/** The derived encrypted master key*/
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   559
	HBufC8* iEncryptedMasterKey;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   560
private:
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   561
	CPBEncryptSet(const CPBEncryptSet&);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   562
	CPBEncryptSet& operator= (const CPBEncryptSet&);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   563
	};
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   564
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   565
/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   566
 * Class representing both 8 and 16 bit descriptor passwords.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   567
 * Internally these are stored as 8 bit passwords.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   568
 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   569
class TPBPassword
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   570
	{
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   571
public:
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   572
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   573
	 * Sets the password.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   574
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   575
	 * Constructs a TPBPassword object with an 8 bit descriptor.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   576
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   577
	 * Internally this is represented as an octet byte sequence 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   578
	 * (aka 8 bit TPtrC8 descriptor).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   579
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   580
	 * @param aPassword	A const reference to an 8 bit descriptor.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   581
	 * 					representing the users initial password.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   582
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   583
	IMPORT_C TPBPassword(const TDesC8& aPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   584
	
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   585
	/** 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   586
	 * Sets the password.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   587
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   588
	 * Constructs a TPBPassword object with a 16 bit descriptor.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   589
	 *
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   590
	 * Internally this is represented as an octet byte sequence
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   591
	 * (aka 8 bit TPtrC8 descriptor).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   592
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   593
	 * @param aPassword	A const reference to a 16 bit descriptor
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   594
	 * 					representing the users initial password.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   595
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   596
	IMPORT_C TPBPassword(const TDesC16& aPassword);
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   597
	
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   598
	/**
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   599
	 * Gets the password.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   600
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   601
	 * Gets a const reference to an 8 bit descriptor representing the users
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   602
	 * initial password (which could have been either 8 or 16 bit).
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   603
	 * 
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   604
	 * @return		A const reference to an 8 bit descriptor.
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   605
	 */
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   606
	IMPORT_C const TDesC8& Password(void) const;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   607
private:
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   608
	TPtrC8 iPassword;
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   609
	};
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   610
35751d3474b7 Revision: 200935
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   611
#endif