/*

 * Copyright (c) 2004-2009 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: 

 * Implements CKeyCreator  

 *

 */

 /**

  @file 

  @internalTechnology

 */

 #ifndef __CCREATEKEYASYNC_H__

 #define __CCREATEKEYASYNC_H__

 #include "fsdatatypes.h"

 #include <e32std.h>

 #include <mctkeystore.h>

 #include <asymmetrickeys.h>

 #include <bigint.h>

 class CSimpleDHKey;

 class CKeyCreatorData;

 //! Server side

 //!	Class to make key creation "asynchronous" by spinning off a thread

 //!	to make the synchronous call to the appropriate key creation function

 //!	The thread entry point is a static member of this class, which holds the 

 //! thread and thread parameter data too.  When the key has been created, the

 //! thread terminates using Rendezvous to notify the main thread.  The created key

 //! is returned through the CAsymmetricCipher member of CKeyCreatorData

 class CKeyCreator : public CActive

 {

 public:

 	CKeyCreator();

 	~CKeyCreator();

 public:	//	Spin a thread to create an appropriate key, if successful, left on CleanupStack

 	void DoCreateKeyAsync(CKeyInfo::EKeyAlgorithm aAlgorithm, TInt aSize, TRequestStatus& aStatus);

 public:

 //	JCS this needs improvement when new crypto api is reviewed

 	CRSAKeyPair* GetCreatedRSAKey();

 	CDSAKeyPair* GetCreatedDSAKey();

 	void GetCreatedDHKey(RInteger& aDHKey);

 protected:

 	void DoCancel();

 	void RunL();

 	TInt RunError(TInt anError);

 private:

 	static TInt CreatorThreadEntryPoint(TAny*);

 private:

 	enum TAction {EIdle, EReadyToCreateKey, ECreatedKey};

 	TAction iAction;

 private:

 	TRequestStatus* iClientStatus;

 	RThread iCreatorThread;

 private:

 	class CKeyCreatorData : public CBase

 	{

 	public:

 		CKeyCreatorData(CKeyInfo::EKeyAlgorithm aAlgorithm, TInt aSize);

 		~CKeyCreatorData();

 	public:	//	Don't bother hiding the data from myself

 		TInt iSize;

 		CKeyInfo::EKeyAlgorithm iKeyAlgorithm;

 	//	Algorithm identified by iKeyAlgorithm

 		union CreatedKey

 		{

 			CRSAKeyPair* iRSAKey;

 			CDSAKeyPair* iDSAKey;

 			CSimpleDHKey* iDHKey;

 		}	iKey;

 	};

 	CKeyCreatorData* iCreateData;

 };

 #endif	//	__CCREATEKEYASYNC_H__