/*

* Copyright (c) 1998-2009 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: 

* This file contains the implementation of the ASN1 Null class.

*

*/

#include "asn1dec.h"

EXPORT_C TASN1DecNull::TASN1DecNull(void)

	{

	}

EXPORT_C void TASN1DecNull::DecodeDERL(const TDesC8& aSource,TInt& aPos)

	{

	TPtrC8 Source=aSource.Mid(aPos);

	TASN1DecGeneric gen(Source);

	gen.InitL();

	aPos+=gen.LengthDER();

	DecodeDERL(gen);

	}

EXPORT_C void TASN1DecNull::DecodeDERL(const TASN1DecGeneric& aSource)

	{

	TPtrC8 contents(aSource.Encoding());

	if ((contents.Length() != 2)	||

		(contents[1] & 0xff)		||

		(!(contents[0] & 0x05)))

		{

		User::Leave(KErrArgument);

		}

	}