/*

* 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 "keyidentifierutil.h"

#include "hash.h"

#include "asymmetrickeys.h"

EXPORT_C void KeyIdentifierUtil::RSAKeyIdentifierL(

		const CRSAPublicKey& aKey, TKeyIdentifier& aIdentifier)

	{

	aIdentifier.FillZ();

	// Generate a hash of the appropriate data (for TKeyIdentifier)	

	const TInteger& keyModulus = aKey.N();

	HBufC8* modulusData = keyModulus.BufferLC();

	CSHA1* sha1 = CSHA1::NewL();

	CleanupStack::PushL(sha1);

	TPtrC8 hash = sha1->Final(*modulusData);

	aIdentifier.Copy(hash);

	CleanupStack::PopAndDestroy(2);	//	sha1, modulusData

	}

EXPORT_C void KeyIdentifierUtil::DSAKeyIdentifierL(

		const CDSAPublicKey& aKey, TKeyIdentifier& aIdentifier)

	{

	aIdentifier.FillZ();

	// Generate a hash of the appropriate data (for TKeyIdentifier)	

	const TInteger& Y = aKey.Y();

	HBufC8* YData = Y.BufferLC();					

	CSHA1* sha1 = CSHA1::NewL();

	CleanupStack::PushL(sha1);

	TPtrC8 hash = sha1->Final(*YData);

	aIdentifier.Copy(hash);

	CleanupStack::PopAndDestroy(2);	//	sha1, YData				

	}

EXPORT_C void KeyIdentifierUtil::DHKeyIdentifierL(

		const RInteger& aKey, TKeyIdentifier& aIdentifier)

	{

	if (aKey.IsZero())

		User::Leave(KErrArgument);

	aIdentifier.FillZ();

	// Generate a hash of the appropriate data (for TKeyIdentifier)	

	HBufC8* XData = aKey.BufferLC();								

	CSHA1* sha1 = CSHA1::NewL();

	CleanupStack::PushL(sha1);

	TPtrC8 hash = sha1->Final(*XData);

	aIdentifier.Copy(hash);

	CleanupStack::PopAndDestroy(2);	//	sha1, XData

	}