/*

* Copyright (c) 2007-2009 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 

 @internalComponent

 @released

*/

#include <openssl/pem.h>

#include <openssl/dsa.h>

#include <openssl/rsa.h>

#include <openssl/err.h>

#include <openssl/bio.h>

#include <iostream>

#include <fstream>

#include <string>

#include "sissignaturealgorithm.h"

#include "utility.h"

#include "utility_interface.h"

#define RSA_IDENTIFIER				L"1.2.840.113549.1.1.5"

#define DSA_IDENTIFIER				L"1.2.840.10040.4.3"

#define DSA_PRIME_SIZE				1024

#define OLD_PEM_FORMAT_TAG			"Proc-Type"

#define ENCRYPTION_ALGORITHM_TAG	"DEK-Info"

#define PEM_HEADER					"----"

void CSISSignatureAlgorithm::SetAlgorithm (const TAlgorithm aAlgorithm)

	{

	switch (aAlgorithm)

		{

	case EAlgRSA :

		iAlgorithmIdentifier = RSA_IDENTIFIER;

		break;

	case EAlgDSA :

		iAlgorithmIdentifier = DSA_IDENTIFIER;

		break;

	default :

		throw CSISException (CSISException::EIllegal, L"Bad signature algorithm");

		}

	iAlgorithm = aAlgorithm;

	}

CSISSignatureAlgorithm::TAlgorithm CSISSignatureAlgorithm::Algorithm ()	const

	{

	if ((iAlgorithm == EAlgNone) && ! iAlgorithmIdentifier.empty ())

		{

		if (iAlgorithmIdentifier == RSA_IDENTIFIER)

			{

			iAlgorithm = EAlgRSA;

			}

		else

		if (iAlgorithmIdentifier == DSA_IDENTIFIER)

			{

			iAlgorithm = EAlgDSA;

			}

		else

			{

			throw CSISException (CSISException::EIllegal, L"Bad signature algorithm");

			}

		}

	return iAlgorithm;

	}

void CSISSignatureAlgorithm::Verify (const TUint32 aLanguages) const

	{

	CStructure <CSISFieldRoot::ESISSignatureAlgorithm>::Verify (aLanguages);

	if (	(iAlgorithmIdentifier != RSA_IDENTIFIER) &&

			(iAlgorithmIdentifier != DSA_IDENTIFIER))

		{

		throw CSISException (CSISException::EIllegal, L"Bad signature algorithm");

		}

	}