/*

* Copyright (c) 2003-2009 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: 

*

*/

#include <asymmetric.h>

#include <asymmetrickeys.h>

#include <bigint.h>

EXPORT_C CDH* CDH::NewL(const CDHPrivateKey& aPrivateKey)

	{

	CDH* self = new(ELeave) CDH(aPrivateKey);

	return self;

	}

EXPORT_C CDH* CDH::NewLC(const CDHPrivateKey& aPrivateKey)

	{

	CDH* self = NewL(aPrivateKey);

	CleanupStack::PushL(self);

	return self;

	}

EXPORT_C HBufC8* CDH::AgreeL(const CDHPublicKey& aPublicKey) const

	{

	//Calculate X^x mod N

	RInteger result = TInteger::ModularExponentiateL(aPublicKey.X(), 

		iPrivateKey.x(), aPublicKey.N());

	CleanupStack::PushL(result);

	HBufC8* key = result.BufferLC();

	CleanupStack::Pop(key);

	CleanupStack::PopAndDestroy(&result);

	return key;

	}

EXPORT_C CDH::CDH(const CDHPrivateKey& aPrivateKey) : iPrivateKey(aPrivateKey)

	{

	}