os/security/cryptoplugins/cryptospiplugins/source/softwarecrypto/rsaimpl.h
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution.
     1 /*
     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
     3 * All rights reserved.
     4 * This component and the accompanying materials are made available
     5 * under the terms of the License "Eclipse Public License v1.0"
     6 * which accompanies this distribution, and is available
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
     8 *
     9 * Initial Contributors:
    10 * Nokia Corporation - initial contribution.
    11 *
    12 * Contributors:
    13 *
    14 * Description: 
    15 *
    16 */
    17 
    18 
    19 #ifndef __RSAIMPL_H__
    20 #define __RSAIMPL_H__
    21 
    22 /**
    23 @file 
    24 @internalComponent
    25 @released
    26 */
    27 
    28 #include <e32base.h>
    29 #include <e32cmn.h>
    30 #include "keys.h"
    31 #include "asymmetriccipherimpl.h"
    32 
    33 /**
    34  * Implementation of RSA encryption as described in PKCS#1 v1.5.
    35  */
    36 namespace SoftwareCrypto
    37 	{
    38 	using namespace CryptoSpi;
    39 	
    40 	NONSHARABLE_CLASS(CRSAImpl) : public CAsymmetricCipherImpl
    41 		{
    42 	public:
    43 		/**
    44 		Creates an instance of an RSA asymmetric cipher plug-in.
    45 		@param aKey The key
    46 		@param aCryptoMode Whether to encrypt or decrypt
    47 		@param aPadding The padding scheme to use None, SSLv3, PKCS#7
    48 		@return A pointer to a CRSAImpl instance
    49 		*/
    50 		static CRSAImpl* NewL(const CKey& aKey,
    51 			TUid aCryptoMode, TUid aPadding);
    52 
    53 		/**
    54 		Creates an instance of an RSA asymmetric cipher plug-in.
    55 		A pointer to the plug-in instance is placed on the cleanup stack.
    56 		@param aKey The key
    57 		@param aCryptoMode Whether to encrypt or decrypt
    58 		@param aPadding The padding scheme to use None, SSLv3, PKCS#7
    59 		@return A pointer to a CRSAImpl instance
    60 		*/
    61 		static CRSAImpl* NewLC(const CKey& aKey,
    62 			TUid aCryptoMode, TUid aPadding);
    63 
    64 		// Override CAsymmetricCipherImpl virtual functions
    65 		TUid ImplementationUid() const;
    66 		TBool IsValidKeyLengthL(TInt aKeyBytes) const;
    67 		TInt GetMaximumInputLengthL() const;
    68 		TInt GetMaximumOutputLengthL() const;
    69 		void ProcessL(const TDesC8& aInput, TDes8& aOutput);
    70 		// End of CAsymmetricCipherImpl
    71 		
    72 		const CExtendedCharacteristics* GetExtendedCharacteristicsL();
    73 		static CExtendedCharacteristics* CreateExtendedCharacteristicsL();
    74 			
    75 		// Destructor
    76 		~CRSAImpl();
    77 
    78 	private:
    79 		/**
    80 		Constructor
    81 		@param aCryptoMode Whether to encrypt or decrypt
    82 		@param aPaddingMode The padding mode to use. None, SSL, PKCS#7
    83 		*/
    84 		CRSAImpl(TUid aCryptoMode, TUid aPaddingMode);
    85 			
    86 		/// second phase of construction
    87 		void ConstructL(const CKey& aKey);
    88 		
    89 		/// for internal usage, called from ProcessL
    90 		void EncryptL(const TDesC8& aInput, TDes8& aOutput) const;
    91 		void DecryptL(const TDesC8& aInput, TDes8& aOutput) const;
    92 
    93 		};
    94 	}
    95 
    96 #endif // __RSAIMPL_H__