/****************************************************************************
* Copyright (C) 2012 ecsec GmbH.
* All rights reserved.
* Contact: ecsec GmbH (info@ecsec.de)
*
* This file is part of the Open eCard App.
*
* GNU General Public License Usage
* This file may be used under the terms of the GNU General Public
* License version 3.0 as published by the Free Software Foundation
* and appearing in the file LICENSE.GPL included in the packaging of
* this file. Please review the following information to ensure the
* GNU General Public License version 3.0 requirements will be met:
* http://www.gnu.org/copyleft/gpl.html.
*
* Other Usage
* Alternatively, this file may be used in accordance with the terms
* and conditions contained in a signed written agreement between
* you and ecsec GmbH.
*
***************************************************************************/
package org.openecard.crypto.common.asn1.eac;
import org.openecard.bouncycastle.asn1.ASN1OctetString;
import org.openecard.bouncycastle.asn1.ASN1Sequence;
/**
*
* @author Moritz Horsch <horsch@cdc.informatik.tu-darmstadt.de>
*/
public final class FileID {
private byte[] fid;
private byte[] sfid;
/**
* Instantiates a new file id.
*
* @param seq the ASN1 encoded sequence
*/
public FileID(ASN1Sequence seq) {
if (seq.size() == 1) {
fid = ASN1OctetString.getInstance(seq.getObjectAt(0)).getOctets();
} else if (seq.size() == 2) {
fid = ASN1OctetString.getInstance(seq.getObjectAt(0)).getOctets();
sfid = ASN1OctetString.getInstance(seq.getObjectAt(1)).getOctets();
} else {
throw new IllegalArgumentException("Sequence wrong size for FileID");
}
}
/**
* Gets the single instance of FileID.
*
* @param obj
* @return single instance of FileID
*/
public static FileID getInstance(Object obj) {
if (obj == null || obj instanceof FileID) {
return (FileID) obj;
} else if (obj instanceof ASN1Sequence) {
return new FileID((ASN1Sequence) obj);
}
throw new IllegalArgumentException("Unknown object in factory: " + obj.getClass().getName());
}
/**
* Gets the file identifier (FID).
*
* @return the FID
*/
public byte[] getFID() {
return fid;
}
/**
* Gets the short file identifier (SFID).
*
* @return the SFID
*/
public byte[] getSFID() {
return sfid;
}
}