/*+
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* Copyright (c) 2006-2009 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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* RSA shim classes definition+
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*+
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*/+
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+
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+
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/**+
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 @file+
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 @internalComponent+
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 @released+
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*/+
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+
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#ifndef __RSASHIM_H__+
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#define __RSASHIM_H__+
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+
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#include <asymmetric.h>+
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+
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namespace CryptoSpi+
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	{+
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	class CAsymmetricCipher;+
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	class CKey;+
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	class CSigner;+
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	class CVerifier;+
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	}+
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	+
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NONSHARABLE_CLASS(CRSAPKCS1v15EncryptorShim) : public CRSAPKCS1v15Encryptor+
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{+
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public:+
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	/**+
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	Creates an RSAPKCS1v15EncryptorShim object which has the same interface+
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	as CRSAPKCS1v15Encryptor but delegates all work to a Crypto SPI plug-in.+
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	+
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	@param aKey The encryption key+
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	@return A pointer to a CRSAPKCS1v15EncryptorShim instance+
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	*/+
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	static CRSAPKCS1v15EncryptorShim* NewL(const CRSAPublicKey& aKey);+
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+
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	/**+
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	Creates an RSAPKCS1v15EncryptorShim object which has the same interface+
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	as CRSAPKCS1v15Encryptor but delegates all work to a Crypto SPI plug-in.+
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	+
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	A pointer to the new object is placed on the cleanup stack+
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	+
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	@param aKey The encryption key+
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	@return A pointer to a CRSAPKCS1v15EncryptorShim instance+
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	*/+
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	static CRSAPKCS1v15EncryptorShim* NewLC(const CRSAPublicKey& aKey);+
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	+
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	// From CRSAPKCS1v15Encryptor+
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	void EncryptL(const TDesC8& aInput, TDes8& aOutput) const;+
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	TInt MaxInputLength(void) const;+
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	TInt MaxOutputLength(void) const;+
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	+
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	/// Destructor+
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	~CRSAPKCS1v15EncryptorShim();+
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	+
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private:+
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	/// Constructor+
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	CRSAPKCS1v15EncryptorShim(const CRSAPublicKey& aKey);+
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	void ConstructL(const CRSAPublicKey& aKey);+
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	+
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private:+
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	/// SPI delegate+
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	CryptoSpi::CAsymmetricCipher* iAsymmetricCipherImpl;+
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		+
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	/// SPI requires all key to passed as key-objects+
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	CryptoSpi::CKey* iKey;+
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};+
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+
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NONSHARABLE_CLASS(CRSAPKCS1v15DecryptorShim) : public CRSAPKCS1v15Decryptor+
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{+
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public:+
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	/**+
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	Creates an RSAPKCS1v15DecryptorShim object which has the same interface+
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	as CRSAPKCS1v15Decryptor but delegates all work to a Crypto SPI plug-in.+
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	+
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	@param aKey The decryption key+
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	@return A pointer to a CRSAPKCS1v15DecryptorShim instance+
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	*/+
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	static CRSAPKCS1v15DecryptorShim* NewL(const CRSAPrivateKey& aKey);+
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	+
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	/**+
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	Creates an RSAPKCS1v15EncryptorShim object which has the same interface+
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	as CRSAPKCS1v15Decryptor but delegates all work to a Crypto SPI plug-in.+
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	+
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	A pointer to the new object is placed on the cleanup stack+
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	+
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	@param aKey The decryption key+
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	@return A pointer to a CRSAPKCS1v15DecryptorShim instance+
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	*/+
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	static CRSAPKCS1v15DecryptorShim* NewLC(const CRSAPrivateKey& aKey);+
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	+
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	// From CRSAPKCS1v15Decryptor+
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	void DecryptL(const TDesC8& aInput, TDes8& aOutput) const;+
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	TInt MaxInputLength(void) const;+
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	TInt MaxOutputLength(void) const;+
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	+
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	/// Destructor+
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	~CRSAPKCS1v15DecryptorShim();+
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	+
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private:+
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	/// Constructor+
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	CRSAPKCS1v15DecryptorShim(const CRSAPrivateKey& aKey);+
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	void ConstructL(const CRSAPrivateKey& aKey);+
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	+
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private:+
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	/// SPI delegate+
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	CryptoSpi::CAsymmetricCipher* iAsymmetricCipherImpl;+
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	+
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	/// SPI requires all key to passed as key-objects+
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	CryptoSpi::CKey* iKey;+
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};+
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+
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NONSHARABLE_CLASS(CRSAPKCS1v15SignerShim) : public CRSAPKCS1v15Signer+
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	{+
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public:+
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	/**+
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	Creates a new CRSAPKCS1v15SignerShim object which has the same interface+
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	as CRSAPKCS1v15Signer but delegates all work to a Crypto SPI plug-in.+
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+
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	 @param aKey	The RSA private key to be used for signing+
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	 @return A pointer to a CRSAPKCS1v15SignerShim instance+
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	 @leave KErrKeySize	If the key length is too small+
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	 */+
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	static CRSAPKCS1v15SignerShim* NewL(const CRSAPrivateKey& aKey);+
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+
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	/**+
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	Creates a new CRSAPKCS1v15SignerShim object which has the same interface+
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	as CRSAPKCS1v15Signer but delegates all work to a Crypto SPI plug-in.+
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+
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	 @param aKey	The RSA private key to be used for signing+
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	 @return A pointer to a CRSAPKCS1v15SignerShim instance+
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	 @leave KErrKeySize	If the key length is too small+
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	 */+
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	static CRSAPKCS1v15SignerShim* NewLC(const CRSAPrivateKey& aKey);+
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+
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	// From CRSAPKCS1v15Signer+
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	virtual CRSASignature* SignL(const TDesC8& aInput) const;+
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	virtual TInt MaxInputLength(void) const;+
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	virtual TInt MaxOutputLength(void) const;+
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	/** The destructor frees all resources owned by the object, prior to its destruction.*/+
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	~CRSAPKCS1v15SignerShim(void);+
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protected:+
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	+
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	CRSAPKCS1v15SignerShim(const CRSAPrivateKey& aKey);+
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	void ConstructL(const CRSAPrivateKey& aKey);+
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+
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protected:+
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	/// SPI delegate+
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	CryptoSpi::CSigner* iSignerImpl;+
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+
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	/// SPI requires all key to passed as key-objects+
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	CryptoSpi::CKey* iKey;+
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private:+
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	CRSAPKCS1v15SignerShim(const CRSAPKCS1v15SignerShim&);+
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	CRSAPKCS1v15SignerShim& operator=(const CRSAPKCS1v15SignerShim&);+
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	};+
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+
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/**+
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* This class verifies RSA signatures given a message and its supposed+
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* signature.  It follows the RSA PKCS#1 v1.5 with PKCS#1 v1.5 padding specification+
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* with the following exception: the VerifyL() function does <b>not</b> hash or+
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* in any way manipulate the input data before checking.  Thus in order to verify+
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* RSA signatures in PKCS#1 v1.5 format, the input data needs to follow PKCS#1 v1.5 +
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* specification, i.e. be ASN.1 encoded and prefixed  by ASN.1 encoded digestId.+
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* +
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* @internalComponent+
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* @released +
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*/+
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NONSHARABLE_CLASS(CRSAPKCS1v15VerifierShim) : public CRSAPKCS1v15Verifier+
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	{+
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public:+
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	/**+
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	@internalComponent+
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	+
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	Creates a new CRSAPKCS1v15VerifierShim object which has the same interface+
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	as CRSAPKCS1v15Verifier but delegates all work to a Crypto SPI plug-in.+
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	+
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	@param aKey	The RSA public key to be used for verifying+
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	@return A pointer to a CRSAPKCS1v15VerifierShim instance+
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	@leave KErrKeySize	If the key length is too small+
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	 */+
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	static CRSAPKCS1v15VerifierShim* NewL(const CRSAPublicKey& aKey);+
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+
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	/**+
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	@internalComponent+
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	+
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	Creates a new CRSAPKCS1v15VerifierShim object which has the same interface+
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	as CRSAPKCS1v15Verifier but delegates all work to a Crypto SPI plug-in.+
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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 aKey	The RSA public key to be used for verifying+
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	 @return A pointer to a CRSAPKCS1v15VerifierShim instance+
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+
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	 @leave KErrKeySize	If the key length is too small+
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	 */+
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	static CRSAPKCS1v15VerifierShim* NewLC(const CRSAPublicKey& aKey);+
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	+
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	// CRSAPKCS1v15Verifier+
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	virtual TInt MaxInputLength(void) const;+
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	virtual TInt MaxOutputLength(void) const;+
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+
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	// RSAVerifier+
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	virtual TBool VerifyL(const TDesC8& aInput, const CRSASignature& aSignature) const;+
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	virtual HBufC8* InverseSignLC(const CRSASignature& aSignature) const;+
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+
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	/** The destructor frees all resources owned by the object, prior to its destruction. */+
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	virtual ~CRSAPKCS1v15VerifierShim(void);+
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protected:+
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	CRSAPKCS1v15VerifierShim(const CRSAPublicKey& aKey);+
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	void ConstructL(const CRSAPublicKey& aKey);+
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+
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protected:+
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	/// SPI delegate+
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	CryptoSpi::CVerifier* iVerifierImpl;+
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+
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	/// SPI requires all key to passed as key-objects+
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	CryptoSpi::CKey* iKey;+
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private:+
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	CRSAPKCS1v15VerifierShim(const CRSAPKCS1v15VerifierShim&);+
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	CRSAPKCS1v15VerifierShim& operator=(const CRSAPKCS1v15VerifierShim&);+
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	};+
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+
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#endif // __RSASHIM_H__+
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