cryptoplugins/cryptospiplugins/source/softwarecrypto/rsaimpl.h
changeset 19 cd501b96611d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/source/softwarecrypto/rsaimpl.h	Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,96 @@
+/*
+* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+
+#ifndef __RSAIMPL_H__
+#define __RSAIMPL_H__
+
+/**
+@file 
+@internalComponent
+@released
+*/
+
+#include <e32base.h>
+#include <e32cmn.h>
+#include "keys.h"
+#include "asymmetriccipherimpl.h"
+
+/**
+ * Implementation of RSA encryption as described in PKCS#1 v1.5.
+ */
+namespace SoftwareCrypto
+	{
+	using namespace CryptoSpi;
+	
+	NONSHARABLE_CLASS(CRSAImpl) : public CAsymmetricCipherImpl
+		{
+	public:
+		/**
+		Creates an instance of an RSA asymmetric cipher plug-in.
+		@param aKey The key
+		@param aCryptoMode Whether to encrypt or decrypt
+		@param aPadding The padding scheme to use None, SSLv3, PKCS#7
+		@return A pointer to a CRSAImpl instance
+		*/
+		static CRSAImpl* NewL(const CKey& aKey,
+			TUid aCryptoMode, TUid aPadding);
+
+		/**
+		Creates an instance of an RSA asymmetric cipher plug-in.
+		A pointer to the plug-in instance is placed on the cleanup stack.
+		@param aKey The key
+		@param aCryptoMode Whether to encrypt or decrypt
+		@param aPadding The padding scheme to use None, SSLv3, PKCS#7
+		@return A pointer to a CRSAImpl instance
+		*/
+		static CRSAImpl* NewLC(const CKey& aKey,
+			TUid aCryptoMode, TUid aPadding);
+
+		// Override CAsymmetricCipherImpl virtual functions
+		TUid ImplementationUid() const;
+		TBool IsValidKeyLengthL(TInt aKeyBytes) const;
+		TInt GetMaximumInputLengthL() const;
+		TInt GetMaximumOutputLengthL() const;
+		void ProcessL(const TDesC8& aInput, TDes8& aOutput);
+		// End of CAsymmetricCipherImpl
+		
+		const CExtendedCharacteristics* GetExtendedCharacteristicsL();
+		static CExtendedCharacteristics* CreateExtendedCharacteristicsL();
+			
+		// Destructor
+		~CRSAImpl();
+
+	private:
+		/**
+		Constructor
+		@param aCryptoMode Whether to encrypt or decrypt
+		@param aPaddingMode The padding mode to use. None, SSL, PKCS#7
+		*/
+		CRSAImpl(TUid aCryptoMode, TUid aPaddingMode);
+			
+		/// second phase of construction
+		void ConstructL(const CKey& aKey);
+		
+		/// for internal usage, called from ProcessL
+		void EncryptL(const TDesC8& aInput, TDes8& aOutput) const;
+		void DecryptL(const TDesC8& aInput, TDes8& aOutput) const;
+
+		};
+	}
+
+#endif // __RSAIMPL_H__