/*

 * 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);

 		}

 	}