/*

* Copyright (c) 2005-2009 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: 

*

*/

/**

 @file

*/

#include <e32std.h>

#include <e32math.h>

#include <e32debug.h>

#include "randomimpl.h"

#include "pluginentry.h"

#include "pluginconfig.h"

#include "securityerr.h"

using namespace SoftwareCrypto;

CRandomImpl* CRandomImpl::NewL(TUid aImplementationUid)

	{

	CRandomImpl* self = new(ELeave)CRandomImpl(aImplementationUid);

	return self;

	}

CRandomImpl* CRandomImpl::NewLC(TUid aImplementationUid)

	{

	CRandomImpl* self = NewL(aImplementationUid);

	CleanupStack::PushL(self);

	return self;

	}

void CRandomImpl::GenerateRandomBytesL(TDes8& aDestination)

	{	

    // Call the Math library to populate the buffer with random data.   

    TRAPD(err, Math::RandomL(aDestination));    

    if(err != KErrNone)

        {

        // As the end users are interested only in the security aspect of the output but not 

        // the internal states, accordingly translate the kernel side error code if required.

        err = (err == KErrNotReady) ? KErrNotSecure : err;

        User::Leave(err);

        }

	}

CRandomImpl::CRandomImpl(TUid aImplementationUid) : iImplementationUid(aImplementationUid)

	{

	}

void CRandomImpl::GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics)

	{

	TInt randomNum = sizeof(KRandomCharacteristics)/sizeof(TRandomCharacteristics*);

	for (TInt i = 0; i < randomNum; i++)

		{

		if (KRandomCharacteristics[i]->cmn.iImplementationUID == ImplementationUid().iUid)

			{

			aPluginCharacteristics = KRandomCharacteristics[i];

			break;

			}

		}

	}

TAny* CRandomImpl::GetExtension(TUid /*aExtensionId*/)

	{

	return NULL;

	}

CExtendedCharacteristics* CRandomImpl::CreateExtendedCharacteristicsL()

	{

	// All Symbian software plug-ins have unlimited concurrency, cannot be reserved

	// for exclusive use and are not CERTIFIED to be standards compliant.

	return CExtendedCharacteristics::NewL(KMaxTInt, EFalse);

	}

const CExtendedCharacteristics* CRandomImpl::GetExtendedCharacteristicsL()

	{

	return CRandomImpl::CreateExtendedCharacteristicsL();

	}

TUid CRandomImpl::ImplementationUid() const

	{

	return iImplementationUid;

	}

CRandomImpl::~CRandomImpl()

	{

	}

void CRandomImpl::Close()

	{

	delete this;

	}

// All crypto plugins must implement this, to reset

// hardware if required. Do nothing in this version

void CRandomImpl::Reset()

	{

	}