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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 __PBEDATA_H__
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#define __PBEDATA_H__
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#include <s32strm.h>
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#include <pbe.h>
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/**
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* Contains the Password Based Encryption parameters.
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* An object of this class can be input for CPBEncryptElement or CPBEncryptSet objects.
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*
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* @since v7.0s
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*/
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class CPBEncryptParms : public CBase
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{
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public:
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enum TKdf
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/**
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Key derivation function.
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This does not affect the authentication key,
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which always uses PKCS#5.
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*/
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{
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EKdfPkcs5,
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EKdfPkcs12
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};
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/**
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* Creates a new CPBEncryptParms object.
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*
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* @param aCipher The cipher to use
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* @param aSalt The salt
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* @param aIV The Initialization Vector
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* @param aIterations The number of iterations of the PBE algorithm
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* @return A pointer to the new CPBEncryptParms object
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*/
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IMPORT_C static CPBEncryptParms* NewL(TPBECipher aCipher,
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const TDesC8& aSalt, const TDesC8& aIV, TUint aIterations);
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/**
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* Creates a new CPBEncryptParms object and puts a pointer to it onto the cleanup stack.
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*
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* @param aCipher The cipher to use
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* @param aSalt The salt
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* @param aIV The Initialization Vector
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* @param aIterations The number of iterations of the PBE algorithm
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* @return A pointer to the new CPBEncryptParms object
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*/
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IMPORT_C static CPBEncryptParms* NewLC(TPBECipher aCipher,
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const TDesC8& aSalt, const TDesC8& aIV, TUint aIterations);
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/**
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* Creates a new CPBEncryptParms object from an existing object.
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*
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* @param aParms The existing encryption parameters object
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* @return A pointer to the new CPBEncryptParms object
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*/
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IMPORT_C static CPBEncryptParms* NewL(const CPBEncryptParms& aParms);
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/**
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* Creates a new CPBEncryptParms object from an existing object
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* and puts a pointer to it onto the cleanup stack.
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*
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* @param aParms The existing encryption parameters object
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* @return A pointer to the new CPBEncryptParms object
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*/
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IMPORT_C static CPBEncryptParms* NewLC(const CPBEncryptParms& aParms);
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/**
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* Internalizes encryption parameter data from a read stream.
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*
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* @param aStream The read stream to be internalized
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* @return A pointer to the new CPBEncryptParms object
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*
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*/
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IMPORT_C static CPBEncryptParms* NewL(RReadStream& aStream);
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/**
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* Internalizes encryption parameter data from a read stream, and
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* puts a pointer to the new object onto the cleanup stack.
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*
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* @param aStream The read stream to be internalized
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* @return A pointer to the new CPBEncryptParms object
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*/
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IMPORT_C static CPBEncryptParms* NewLC(RReadStream& aStream);
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/**
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* Gets the PBE cipher
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*
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* @return The cipher to use
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*/
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IMPORT_C TPBECipher Cipher() const;
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/**
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Gets the key derivation function (KDF.)
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@return The key derivation function (KDF) which
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transforms the password into an encryption key.
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*/
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IMPORT_C TKdf Kdf() const;
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/**
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* Gets the PBE salt
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*
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* @return The salt
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*/
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IMPORT_C TPtrC8 Salt() const;
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/**
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* Gets the number of iterations for the PKCS#5 algorithm.
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*
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* @return The number of iterations
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*/
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IMPORT_C TInt Iterations() const;
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/**
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* Gets the PBE Initialization Vector
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*
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* @return The IV
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*/
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IMPORT_C TPtrC8 IV() const;
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IMPORT_C void SetIV(const TDesC8& aNewIv);
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/**
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* Externalizes the encryption parameters into a write stream.
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*
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* @param aStream The stream to write to
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*/
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IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
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IMPORT_C static CPBEncryptParms* NewL();
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IMPORT_C static CPBEncryptParms* NewLC();
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IMPORT_C void SetCipher(TPBECipher aCipher);
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/**
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* Replace the current cipher. This function resizes the
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* IV and replaces its existing contents.
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*
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* @param aCipher New cipher.
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* @leave System wide error code.
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*/
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inline void SetCipherL(TPBECipher aCipher)
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{
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SetCipher(aCipher);
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}
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IMPORT_C void SetKdf(TKdf aKdf);
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IMPORT_C void ResizeSaltL(TInt aNewLen);
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IMPORT_C void SetIterations(TInt aIterCount);
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/** Destructor */
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virtual ~CPBEncryptParms(void);
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/** @internalAll */
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void DeriveKeyL(const TDesC8& aPassword, TDes8& aKeyBuf) const;
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protected:
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#ifdef PBEDATA_NO_EXPORTED_CONSTRUCTORS
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/** @internalAll */
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CPBEncryptParms(void);
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#else
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/** Constructor */
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IMPORT_C CPBEncryptParms(void);
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#endif
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/** @internalAll */
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void ConstructL();
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/** @internalAll*/
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void ConstructL(TPBECipher aCipher, const TDesC8& aSalt,
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const TDesC8& aIV, TUint aIterations);
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/** @internalAll*/
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void ConstructL(const CPBEncryptParms& aParms);
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/** @internalAll*/
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void ConstructL(RReadStream& aStream);
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private:
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CPBEncryptParms(const CPBEncryptParms&);
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CPBEncryptParms& operator= (const CPBEncryptParms&);
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private:
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class TParamsData
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/**
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This class contains multiple objects. Its
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pointer is stored in CPBEncryptParms to preserve
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BC, because CPBEncryptParms has an exported,
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protected constructor.
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*/
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{
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public:
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TPBECipher iCipher;
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/**
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The password is processed with this function
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to generate the encryption key.
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*/
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TKdf iKdf;
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};
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TParamsData* iData;
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HBufC8* iSalt;
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HBufC8* iIV;
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TUint iIterations;
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};
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/**
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* Contains the password based authentication data.
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* Used to check the passphrase when decrypting.
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*
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* @since v7.0s
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*/
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class CPBAuthData : public CBase
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{
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public:
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/**
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* Derives an authentication key.
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*
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* @param aPassword The user's initial password
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* @param aSalt The salt
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* @param aKeySize The key size
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* @param aIterations The number of iterations of the PBE algorithm
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* @return A pointer to the new CPBAuthData object
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*/
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IMPORT_C static CPBAuthData* NewL(const TDesC8& aPassword,
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const TDesC8& aSalt, TUint aKeySize, TUint aIterations);
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/**
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* Derives an authentication key.
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*
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* The returned pointer is put onto the cleanup stack.
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*
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* @param aPassword The user's initial password
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* @param aSalt The salt
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* @param aKeySize The key size
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* @param aIterations The number of iterations of the PBE algorithm
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* @return A pointer to the new CPBAuthData object
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*/
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IMPORT_C static CPBAuthData* NewLC(const TDesC8& aPassword,
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const TDesC8& aSalt, TUint aKeySize, TUint aIterations);
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/**
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* Creates a new CPBAuthData object from an existing authentication key.
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*
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* @param aData The existing CPBAuthData object
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* @return A pointer to the new CPBAuthData object
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*/
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IMPORT_C static CPBAuthData* NewL(const CPBAuthData& aData);
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/**
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* Creates a new CPBAuthData object from an existing authentication key.
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*
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* The returned pointer is put onto the cleanup stack.
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*
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* @param aData The existing CPBAuthData object
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* @return A pointer to the new CPBAuthData object
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*/
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IMPORT_C static CPBAuthData* NewLC(const CPBAuthData& aData);
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/**
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* Creates a new CPBAuthData object from an existing authentication key
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* by internalizing the authentication data from a read stream.
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*
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* @param aStream The stream to read from
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* @return A pointer to the new CPBAuthData object
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*/
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IMPORT_C static CPBAuthData* NewL(RReadStream& aStream);
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/**
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* Creates a new CPBAuthData object from an existing authentication key
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* by internalizing the authentication data from a read stream.
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*
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* The returned pointer is put onto the cleanup stack.
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*
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* @param aStream The stream to read from
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* @return A pointer to the new CPBAuthData object
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*/
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IMPORT_C static CPBAuthData* NewLC(RReadStream& aStream);
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/**
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* Gets the authentication key
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*
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* @return The key
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*/
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IMPORT_C TPtrC8 Key() const;
|
|
sl@0
|
307 |
|
|
sl@0
|
308 |
/**
|
|
sl@0
|
309 |
* Gets the salt used for the authentication
|
|
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|
310 |
*
|
|
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|
311 |
* @return The salt
|
|
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|
312 |
*/
|
|
sl@0
|
313 |
IMPORT_C TPtrC8 Salt() const;
|
|
sl@0
|
314 |
|
|
sl@0
|
315 |
/**
|
|
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|
316 |
* Gets the number of iterations of the hashing algorithm.
|
|
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|
317 |
*
|
|
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|
318 |
* @return The number of iterations
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|
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|
319 |
*/
|
|
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|
320 |
IMPORT_C TInt Iterations() const;
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|
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|
321 |
|
|
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|
322 |
/**
|
|
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|
323 |
* Tests whether two authentication keys are identical
|
|
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|
324 |
*
|
|
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|
325 |
* @param aAuth The authentication data object which holds the key to be tested
|
|
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|
326 |
* @return ETrue, if they are identical; EFalse, otherwise
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|
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|
327 |
*/
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|
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|
328 |
IMPORT_C TBool operator==(const CPBAuthData& aAuth) const;
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|
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|
329 |
|
|
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|
330 |
/**
|
|
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|
331 |
* Externalizes the encryption parameters into a write stream.
|
|
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|
332 |
*
|
|
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|
333 |
* @param aStream The stream to write to
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|
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|
334 |
*/
|
|
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|
335 |
IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
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|
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|
336 |
|
|
sl@0
|
337 |
/** Destructor */
|
|
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|
338 |
virtual ~CPBAuthData(void);
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|
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|
339 |
protected:
|
|
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|
340 |
#ifdef PBEDATA_NO_EXPORTED_CONSTRUCTORS
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|
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|
341 |
CPBAuthData(void);
|
|
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|
342 |
#else
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|
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|
343 |
/** Constructor */
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|
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|
344 |
IMPORT_C CPBAuthData(void);
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|
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|
345 |
#endif
|
|
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|
346 |
/** @internalAll */
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|
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|
347 |
void ConstructL(const TDesC8& aPassword, const TDesC8& aSalt,
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|
sl@0
|
348 |
TUint aKeySize, TUint aIterations);
|
|
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|
349 |
/** @internalAll */
|
|
sl@0
|
350 |
void ConstructL(const CPBAuthData& aData);
|
|
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|
351 |
/** @internalAll */
|
|
sl@0
|
352 |
void ConstructL(RReadStream& aStream);
|
|
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|
353 |
private:
|
|
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|
354 |
CPBAuthData(const CPBAuthData&);
|
|
sl@0
|
355 |
CPBAuthData& operator= (const CPBAuthData&);
|
|
sl@0
|
356 |
private:
|
|
sl@0
|
357 |
HBufC8* iAuthKey;
|
|
sl@0
|
358 |
HBufC8* iSalt;
|
|
sl@0
|
359 |
TUint iIterations;
|
|
sl@0
|
360 |
};
|
|
sl@0
|
361 |
|
|
sl@0
|
362 |
/**
|
|
sl@0
|
363 |
* Represents the information needed to decrypt encrypted data given the correct password.
|
|
sl@0
|
364 |
* Contains the authentication key, and the parameters used to derive the encryption key.
|
|
sl@0
|
365 |
* A CPBEncryptionData object needs to be stored to recover any data for later use.
|
|
sl@0
|
366 |
*
|
|
sl@0
|
367 |
* @see CPBEncryptParms
|
|
sl@0
|
368 |
* @see CPBAuthData
|
|
sl@0
|
369 |
*
|
|
sl@0
|
370 |
* @since v7.0s
|
|
sl@0
|
371 |
*/
|
|
sl@0
|
372 |
class CPBEncryptionData : public CBase
|
|
sl@0
|
373 |
{
|
|
sl@0
|
374 |
public:
|
|
sl@0
|
375 |
/**
|
|
sl@0
|
376 |
* Creates a new CPBEncryptionData object
|
|
sl@0
|
377 |
*
|
|
sl@0
|
378 |
* @param aPassword The user's initial password
|
|
sl@0
|
379 |
* @param aCipher The cipher to use
|
|
sl@0
|
380 |
* @param aAuthSalt The salt used for the authentication
|
|
sl@0
|
381 |
* @param aEncryptSalt The salt used for the encryption
|
|
sl@0
|
382 |
* @param aIV The Initialization Vector
|
|
sl@0
|
383 |
* @param aIterations The number of iterations of the PBE algorithm
|
|
sl@0
|
384 |
* @return A pointer to the new CPBEncryptionData object
|
|
sl@0
|
385 |
*/
|
|
sl@0
|
386 |
IMPORT_C static CPBEncryptionData* NewL(const TDesC8& aPassword,
|
|
sl@0
|
387 |
TPBECipher aCipher, const TDesC8& aAuthSalt,
|
|
sl@0
|
388 |
const TDesC8& aEncryptSalt, const TDesC8& aIV, TUint aIterations);
|
|
sl@0
|
389 |
|
|
sl@0
|
390 |
/**
|
|
sl@0
|
391 |
* Creates a new CPBEncryptionData object
|
|
sl@0
|
392 |
* and puts a pointer to it onto the cleanup stack.
|
|
sl@0
|
393 |
*
|
|
sl@0
|
394 |
* @param aPassword The user's initial password
|
|
sl@0
|
395 |
* @param aCipher The cipher to use
|
|
sl@0
|
396 |
* @param aAuthSalt The salt used for the authentication
|
|
sl@0
|
397 |
* @param aEncryptSalt The salt used for the encryption
|
|
sl@0
|
398 |
* @param aIV The Initialization Vector
|
|
sl@0
|
399 |
* @param aIterations The number of iterations of the PBE algorithm
|
|
sl@0
|
400 |
* @return A pointer to the new CPBEncryptionData object
|
|
sl@0
|
401 |
*/
|
|
sl@0
|
402 |
IMPORT_C static CPBEncryptionData* NewLC(const TDesC8& aPassword,
|
|
sl@0
|
403 |
TPBECipher aCipher, const TDesC8& aAuthSalt,
|
|
sl@0
|
404 |
const TDesC8& aEncryptSalt, const TDesC8& aIV, TUint aIterations);
|
|
sl@0
|
405 |
|
|
sl@0
|
406 |
/**
|
|
sl@0
|
407 |
* Creates a new CPBEncryptionData from an existing one.
|
|
sl@0
|
408 |
*
|
|
sl@0
|
409 |
* @param aData The existing CPBEncryptionData object
|
|
sl@0
|
410 |
* @return A pointer to the new CPBEncryptionData object
|
|
sl@0
|
411 |
*/
|
|
sl@0
|
412 |
IMPORT_C static CPBEncryptionData* NewL(const CPBEncryptionData& aData);
|
|
sl@0
|
413 |
|
|
sl@0
|
414 |
/**
|
|
sl@0
|
415 |
* Creates a new CPBEncryptionData from an existing one,
|
|
sl@0
|
416 |
* and puts a pointer to it onto the cleanup stack.
|
|
sl@0
|
417 |
*
|
|
sl@0
|
418 |
* @param aData The existing CPBEncryptionData object
|
|
sl@0
|
419 |
* @return A pointer to the new CPBEncryptionData object
|
|
sl@0
|
420 |
*/
|
|
sl@0
|
421 |
IMPORT_C static CPBEncryptionData* NewLC(const CPBEncryptionData& aData);
|
|
sl@0
|
422 |
|
|
sl@0
|
423 |
/**
|
|
sl@0
|
424 |
* Internalizes the encryption data from a read stream.
|
|
sl@0
|
425 |
*
|
|
sl@0
|
426 |
* @param aStream The stream to read from
|
|
sl@0
|
427 |
* @return A pointer to the new CPBEncryptionData object
|
|
sl@0
|
428 |
*/
|
|
sl@0
|
429 |
IMPORT_C static CPBEncryptionData* NewL(RReadStream& aStream);
|
|
sl@0
|
430 |
|
|
sl@0
|
431 |
/**
|
|
sl@0
|
432 |
* Internalizes the encryption data from a read stream,
|
|
sl@0
|
433 |
* and puts a pointer to it onto the cleanup stack.
|
|
sl@0
|
434 |
*
|
|
sl@0
|
435 |
* @param aStream The stream to read from
|
|
sl@0
|
436 |
* @return A pointer to the new CPBEncryptionData object
|
|
sl@0
|
437 |
*/
|
|
sl@0
|
438 |
IMPORT_C static CPBEncryptionData* NewLC(RReadStream& aStream);
|
|
sl@0
|
439 |
IMPORT_C static CPBEncryptionData* NewL(
|
|
sl@0
|
440 |
const TDesC8& aPassword, const TDesC8& aAuthSalt,
|
|
sl@0
|
441 |
const CPBEncryptParms& aParms);
|
|
sl@0
|
442 |
|
|
sl@0
|
443 |
|
|
sl@0
|
444 |
/**
|
|
sl@0
|
445 |
* Returns the encryption parameter object.
|
|
sl@0
|
446 |
*
|
|
sl@0
|
447 |
* @return The CPBEncryptParms object
|
|
sl@0
|
448 |
*/
|
|
sl@0
|
449 |
IMPORT_C const CPBEncryptParms& EncryptParms() const;
|
|
sl@0
|
450 |
|
|
sl@0
|
451 |
/**
|
|
sl@0
|
452 |
* Returns the authentication data object.
|
|
sl@0
|
453 |
*
|
|
sl@0
|
454 |
* @return The CPBAuthData object
|
|
sl@0
|
455 |
*/
|
|
sl@0
|
456 |
IMPORT_C const CPBAuthData& AuthData() const;
|
|
sl@0
|
457 |
|
|
sl@0
|
458 |
/**
|
|
sl@0
|
459 |
* Externalizes the encryption data into a write stream.
|
|
sl@0
|
460 |
*
|
|
sl@0
|
461 |
* @param aStream The stream to write to
|
|
sl@0
|
462 |
*/
|
|
sl@0
|
463 |
IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
|
|
sl@0
|
464 |
|
|
sl@0
|
465 |
/** Destructor */
|
|
sl@0
|
466 |
virtual ~CPBEncryptionData(void);
|
|
sl@0
|
467 |
protected:
|
|
sl@0
|
468 |
#ifdef PBEDATA_NO_EXPORTED_CONSTRUCTORS
|
|
sl@0
|
469 |
CPBEncryptionData(void);
|
|
sl@0
|
470 |
#else
|
|
sl@0
|
471 |
/** Constructor */
|
|
sl@0
|
472 |
IMPORT_C CPBEncryptionData(void);
|
|
sl@0
|
473 |
#endif
|
|
sl@0
|
474 |
/** @internalAll */
|
|
sl@0
|
475 |
void ConstructL(const TDesC8& aPassword, TPBECipher aCipher,
|
|
sl@0
|
476 |
const TDesC8& aAuthSalt, const TDesC8& aEncryptSalt, const TDesC8& aIV,
|
|
sl@0
|
477 |
TUint aIterations);
|
|
sl@0
|
478 |
/** @internalAll */
|
|
sl@0
|
479 |
void ConstructL(const CPBEncryptionData& aData);
|
|
sl@0
|
480 |
/** @internalAll */
|
|
sl@0
|
481 |
void ConstructL(
|
|
sl@0
|
482 |
const TDesC8& aPassword, const TDesC8& aAuthSalt,
|
|
sl@0
|
483 |
const CPBEncryptParms& aParms);
|
|
sl@0
|
484 |
/** @internalAll */
|
|
sl@0
|
485 |
void ConstructL(RReadStream& aStream);
|
|
sl@0
|
486 |
private:
|
|
sl@0
|
487 |
CPBEncryptionData(const CPBEncryptionData&);
|
|
sl@0
|
488 |
CPBEncryptionData& operator= (const CPBEncryptionData&);
|
|
sl@0
|
489 |
private:
|
|
sl@0
|
490 |
CPBEncryptParms* iParms;
|
|
sl@0
|
491 |
CPBAuthData* iAuth;
|
|
sl@0
|
492 |
};
|
|
sl@0
|
493 |
|
|
sl@0
|
494 |
#endif
|