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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 __PBENCRYPTOR_H__
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#define __PBENCRYPTOR_H__
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#include <pbe.h>
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#include <padding.h>
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#include <msymmetriccipher.h>
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/**
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* Implements the password based encryption of elements.
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*
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* @see CPBEncryptElement
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* @since v7.0s
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*/
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class CPBEncryptorElement : public CPBEncryptor
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{
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public:
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/**
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* Creates a new CPBEncryptorElement object from the specified cipher,
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* key, and Initialization Vector (IV).
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*
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* @param aCipher The encryption cipher
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* @param aKey The encryption key
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* @param aIV The Initialization Vector
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* @return A pointer to the new CPBEncryptorElement object
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*/
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IMPORT_C static CPBEncryptorElement* NewL(TPBECipher aCipher,
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const TDesC8& aKey, const TDesC8& aIV);
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/**
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* Creates a new CPBEncryptorElement object from the specified cipher,
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* key, and IV.
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*
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* Puts a pointer to the returned object onto the cleanup stack.
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*
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* @param aCipher The encryption cipher
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* @param aKey The encryption key
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* @param aIV The Initialization Vector
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* @return A pointer to the new CPBEncryptorElement object
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*/
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IMPORT_C static CPBEncryptorElement* NewLC(TPBECipher aCipher,
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const TDesC8& aKey, const TDesC8& aIV);
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/**
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* Transforms aInput into its encrypted form, aOutput.
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*
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* aOutput must have CPBEncryptorElement::MaxOutputLength() empty bytes remaining in its length.
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*
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* See the Cryptography api-guide documentation for an explanation of
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* how buffering of data supplied to this function is handled.
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*
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* @param aInput The plaintext.
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* @param aOutput The ciphertext.
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*/
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void Process(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Transforms aInput into its encrypted form, aOutput, and applies a
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* padding scheme to ensure a block aligned result.
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*
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* aOutput must have CPBEncryptorElement::MaxFinalOutputLength()
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* empty bytes remaining in its length.
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*
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* See the Cryptography api-guide documentation for an explanation of
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* how buffering of data supplied to this function is handled.
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*
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* @param aInput The plaintext.
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* @param aOutput The ciphertext.
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*/
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void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Gets the maximum size of the output resulting from calling Process() with a
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* given input length.
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*
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* @param aMaxInputLength The maximum input length in bytes.
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* @return The maximum output length in bytes.
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*/
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TInt MaxOutputLength(TUint aMaxInputLength) const;
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/**
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* Gets the maximum size of the output resulting from calling ProcessFinalL()
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* with a given input length.
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*
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* @param aMaxInputLength The maximum input length in bytes.
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* @return TInt The maximum output length in bytes.
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*/
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TInt MaxFinalOutputLength(TUint aMaxInputLength) const;
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/** Destructor */
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virtual ~CPBEncryptorElement();
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protected:
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CPBEncryptorElement();
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void ConstructL(TPBECipher aCipher, const TDesC8& aKey, const TDesC8& aIV);
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private:
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CSymmetricCipher* iCipher;
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};
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/**
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* Implements the password based decryption of elements.
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*
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* @since v7.0s
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*/
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class CPBDecryptorElement : public CPBDecryptor
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{
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public:
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/**
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* Creates a new CPBDecryptorElement object from the specified cipher,
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* key, and IV.
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*
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* @param aCipher The decryption cipher
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* @param aKey The decryption key
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* @param aIV The Initialization Vector
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* @return A pointer to the new CPBDecryptorElement object
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*/
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IMPORT_C static CPBDecryptorElement* NewL(const TPBECipher aCipher,
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const TDesC8& aKey, const TDesC8& aIV);
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/**
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* Creates a new CPBDecryptorElement object from the specified cipher,
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* key, and IV.
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*
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* Puts a pointer to the returned object onto the cleanup stack.
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*
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* @param aCipher The decryption cipher
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* @param aKey The decryption key
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* @param aIV The Initialization Vector
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* @return A pointer to the new CPBDecryptorElement object
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*/
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IMPORT_C static CPBDecryptorElement* NewLC(const TPBECipher aCipher,
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const TDesC8& aKey, const TDesC8& aIV);
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/**
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* Transforms aInput into its decrypted form, aOutput.
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*
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* aOutput must have CPBDecryptorElement::MaxOutputLength() empty bytes
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* remaining in its length.
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*
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* See the Cryptography api-guide documentation for an explanation of
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* how buffering of data supplied to this function is handled.
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*
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* @param aInput The ciphertext.
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* @param aOutput The plaintext.
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*/
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void Process(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Transforms aInput into its decrypted form, aOutput.
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*
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* aOutput must have CPBDecryptorElement::MaxFinalOutputLength()
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* empty bytes remaining in its length.
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*
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* @param aInput The ciphertext.
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* @param aOutput The plaintext.
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*/
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void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Gets the maximum size of the output given a certain input length.
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*
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* @param aMaxInputLength The maximum input length in bytes.
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* @return The maximum output length in bytes.
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*/
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TInt MaxOutputLength(TUint aMaxInputLength) const;
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/**
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* Gets the maximum size of the output given a certain input length.
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*
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* @param aMaxInputLength The maximum input length in bytes.
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* @return The maximum output length in bytes.
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*/
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TInt MaxFinalOutputLength(TUint aMaxInputLength) const;
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/** Destructor */
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virtual ~CPBDecryptorElement();
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protected:
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CPBDecryptorElement();
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void ConstructL(const TPBECipher aCipher, const TDesC8& aKey, const TDesC8& aIV);
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private:
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CSymmetricCipher* iCipher;
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};
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/**
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* Implements the password based encryption of multiple elements.
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*
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* @see CPBEncryptSet
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* @since v7.0s
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*/
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class CPBEncryptorSet : public CPBEncryptor
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{
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public:
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/**
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* Creates a new CPBEncryptorSet object from the specified cipher and key,
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* and a random Initialization Vector (IV).
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*
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* @param aCipher The encryption cipher
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* @param aKey The encryption key
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* @return A pointer to the new CPBEncryptorSet object
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*/
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IMPORT_C static CPBEncryptorSet* NewL(const TPBECipher aCipher,
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const TDesC8& aKey);
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/**
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* Creates a new CPBEncryptorSet object from the specified cipher and key,
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* and a random IV.
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*
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* Puts a pointer to the returned object onto the cleanup stack.
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*
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* @param aCipher The encryption cipher
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* @param aKey The encryption key
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* @return A pointer to the new CPBEncryptorSet object
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*/
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IMPORT_C static CPBEncryptorSet* NewLC(const TPBECipher aCipher,
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const TDesC8& aKey);
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/**
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* Resets the CPBEncryptorSet object back to its original state
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* and clears all its buffers.
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*/
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IMPORT_C void Reset(void);
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/**
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* Transforms aInput into its encrypted form, aOutput.
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*
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* aOutput must have CPBEncryptorSet::MaxOutputLength() empty bytes
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* remaining in its length.
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*
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* @param aInput The plaintext.
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* @param aOutput The ciphertext.
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*/
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void Process(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Transforms aInput into its encrypted form, aOutput, and applies a
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* padding scheme to ensure a block aligned result.
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*
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* aOutput must have CPBEncryptorSet::MaxFinalOutputLength()
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* empty bytes remaining in its length.
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*
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* @param aInput The plaintext.
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* @param aOutput The ciphertext.
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*/
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void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Gets the maximum size of the output given a certain input length.
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*
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* @param aMaxInputLength The maximum input length in bytes.
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* @return The maximum output length in bytes.
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*/
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TInt MaxOutputLength(TUint aMaxInputLength) const;
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/**
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* Gets the maximum size of the output given a certain input length.
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*
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* @param aMaxInputLength The maximum input length in bytes.
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* @return The maximum output length in bytes.
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*/
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TInt MaxFinalOutputLength(TUint aMaxInputLength) const;
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/** Destructor */
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virtual ~CPBEncryptorSet();
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protected:
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CPBEncryptorSet();
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void ConstructL(TPBECipher aCipher, const TDesC8& aKey);
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private:
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CSymmetricCipher* iCipher;
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HBufC8* iIV;
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TBool iIVSent;
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};
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/**
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* Implements the password based decryption of multiple elements.
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*
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* @since v7.0s
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*/
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class CPBDecryptorSet : public CPBDecryptor
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{
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public:
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/**
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* Creates a new CPBDecryptorSet object from the specified cipher and key,
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* and a random IV.
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*
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* @param aCipher The decryption cipher
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* @param aKey The decryption key
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* @return A pointer to the new CPBDecryptorSet object
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*/
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IMPORT_C static CPBDecryptorSet* NewL(const TPBECipher aCipher,
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const TDesC8& aKey);
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/**
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* Creates a new CPBDecryptorSet object from the specified cipher and key,
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* and a random IV.
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*
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* Puts a pointer to the returned object onto the cleanup stack.
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*
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* @param aCipher The decryption cipher
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* @param aKey The decryption key
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* @return A pointer to the new CPBDecryptorSet object
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*/
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IMPORT_C static CPBDecryptorSet* NewLC(const TPBECipher aCipher,
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const TDesC8& aKey);
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/**
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* Resets the CPBDecryptorSet object back to its original state
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* and clears all its buffers.
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*/
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IMPORT_C void Reset(void);
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/**
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* Transforms aInput into its decrypted form, aOutput.
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*
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* aOutput must have CPBDecryptorSet::MaxOutputLength() empty bytes
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* remaining in its length.
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*
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* @param aInput The ciphertext.
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* @param aOutput The plaintext.
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*/
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void Process(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Transforms aInput into its decrypted form, aOutput, and applies a
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* padding scheme to ensure a block aligned result.
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*
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* aOutput must have CPBDecryptorSet::MaxFinalOutputLength()
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* empty bytes remaining in its length.
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*
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* @param aInput The ciphertext.
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* @param aOutput The plaintext.
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|
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*/
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void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput);
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|
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/**
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|
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* Gets the maximum size of the output given a certain input length.
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|
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*
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|
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* @param aMaxInputLength The maximum input length in bytes.
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|
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* @return The maximum output length in bytes.
|
|
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|
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*/
|
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|
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TInt MaxOutputLength(TUint aMaxInputLength) const;
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|
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|
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|
|
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|
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/**
|
|
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|
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* Gets the maximum size of the output given a certain input length.
|
|
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|
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*
|
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|
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* @param aMaxInputLength The maximum input length in bytes.
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|
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* @return The maximum output length in bytes.
|
|
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|
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*/
|
|
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|
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TInt MaxFinalOutputLength(TUint aMaxInputLength) const;
|
|
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|
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|
|
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|
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/** Destructor */
|
|
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|
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virtual ~CPBDecryptorSet();
|
|
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|
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protected:
|
|
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|
378 |
CPBDecryptorSet();
|
|
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|
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void ConstructL(TPBECipher aCipher, const TDesC8& aKey, const TDesC8& aIV);
|
|
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|
380 |
private:
|
|
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|
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TPtrC8 ProcessIV(const TDesC8& aInput);
|
|
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|
382 |
private:
|
|
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|
383 |
CSymmetricCipher* iCipher;
|
|
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|
384 |
HBufC8* iIVBuf;
|
|
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|
385 |
TBool iIVSent;
|
|
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|
386 |
};
|
|
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|
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|
|
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|
388 |
#endif
|