import java.io.IOException;


@SuppressWarnings ( "javadoc" )
public abstract class SpnegoToken {

    private byte[] mechanismToken;

    private byte[] mechanismListMIC;


    public byte[] getMechanismToken () {
        return this.mechanismToken;
    }


    public void setMechanismToken ( byte[] mechanismToken ) {
        this.mechanismToken = mechanismToken;
    }

            ASN1ObjectIdentifier prefMech = rm[ 0 ];
            // only use token if the optimistic mechanism is supported
            if ( this.mechContext.isSupported(prefMech) ) {
                inputToken = tinit.getMechanismToken();
            }
            else {
                ASN1ObjectIdentifier found = null;
                for ( ASN1ObjectIdentifier mech : rm ) {
                    if ( this.mechContext.isSupported(mech) ) {

            int ctxFlags = getContextFlags();
            if ( ctxFlags != 0 ) {
                fields.add(new DERTaggedObject(true, 1, new DERBitString(ctxFlags)));
            }
            byte[] mechanismToken = getMechanismToken();
            if ( mechanismToken != null ) {
                fields.add(new DERTaggedObject(true, 2, new DEROctetString(mechanismToken)));
            }
            byte[] mechanismListMIC = getMechanismListMIC();

            ASN1ObjectIdentifier mech = getMechanism();
            if ( mech != null ) {
                fields.add(new DERTaggedObject(true, 1, mech));
            }
            byte[] mechanismToken = getMechanismToken();
            if ( mechanismToken != null ) {
                fields.add(new DERTaggedObject(true, 2, new DEROctetString(mechanismToken)));
            }
            byte[] mechanismListMIC = getMechanismListMIC();

        NegTokenInit negInit = new NegTokenInit(mechToken);
        byte[] krbToken = negInit.getMechanismToken();


        Path p = Files.createTempFile("fakeserver", ".keytab");
        try {
            Files.write(p, keyTab);
            KeyTab kt = KeyTab.getInstance(p.toFile());