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X.509-Attacker is a tool based on ASN.1 Tool for creating arbitrary certificates; including especially invalid and malformed certificates. Since X.509 certificates encode their contents in ASN.1, this tool extends the features of ASN.1 Tool in terms of certificate signing. Also, X.509-Attacker introduces a feature of referencing XML elements in order to avoid redundancies when defining certificates in XML.

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/*
 * X.509-Attacker - A Library for Arbitrary X.509 Certificates
 *
 * Copyright 2014-2023 Ruhr University Bochum, Paderborn University, Technology Innovation Institute, and Hackmanit GmbH
 *
 * Licensed under Apache License, Version 2.0
 * http://www.apache.org/licenses/LICENSE-2.0.txt
 */
package de.rub.nds.x509attacker.x509.model.extensions;

import de.rub.nds.asn1.model.Asn1BitString;
import de.rub.nds.x509attacker.chooser.X509Chooser;
import de.rub.nds.x509attacker.x509.handler.X509Handler;
import de.rub.nds.x509attacker.x509.model.X509Component;
import de.rub.nds.x509attacker.x509.parser.X509Parser;
import de.rub.nds.x509attacker.x509.preparator.X509Preparator;
import de.rub.nds.x509attacker.x509.serializer.X509Serializer;
import jakarta.xml.bind.annotation.XmlAccessType;
import jakarta.xml.bind.annotation.XmlAccessorType;
import jakarta.xml.bind.annotation.XmlRootElement;

/**
 * KeyUsage ::= BIT STRING { digitalSignature (0), nonRepudiation (1), -- recent editions of X.509
 * have -- renamed this bit to contentCommitment keyEncipherment (2), dataEncipherment (3),
 * keyAgreement (4), keyCertSign (5), cRLSign (6), encipherOnly (7), decipherOnly (8) }
 */
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class KeyUsage extends Asn1BitString implements X509Component {

    private KeyUsage() {
        super(null);
    }

    public KeyUsage(String identifier) {
        super(identifier);
    }

    @Override
    public X509Handler getHandler(X509Chooser chooser) {
        throw new UnsupportedOperationException("not implemented yet");
    }

    @Override
    public X509Parser getParser(X509Chooser chooser) {
        throw new UnsupportedOperationException("not implemented yet");
    }

    @Override
    public X509Preparator getPreparator(X509Chooser chooser) {
        throw new UnsupportedOperationException("not implemented yet");
    }

    @Override
    public X509Serializer getSerializer(X509Chooser chooser) {
        throw new UnsupportedOperationException("not implemented yet");
    }
}