*/
    public static NtlmPasswordAuthentication authenticate(
            HttpServletRequest req, HttpServletResponse resp, byte[] challenge)
                    throws IOException, ServletException {
        String msg = req.getHeader("Authorization");
        if (msg != null && msg.startsWith("NTLM ")) {
            byte[] src = Base64.decode(msg.substring(5));
            if (src[8] == 1) {

import javax.crypto.spec.SecretKeySpec;
import javax.security.auth.kerberos.KerberosKey;


@SuppressWarnings ( "javadoc" )
public class PacMac {

    /**
     * 
     */
    private static final String HMAC_KEY = "HMAC";
    private static final byte[] MD5_CONSTANT = "signaturekey\0".getBytes(StandardCharsets.US_ASCII);
    private static final byte[] ZERO_IV = new byte[] {
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

            for ( int _i = 0; _i < _uuid_nodes; _i++ ) {
                this.uuid.node[ _i ] = (byte) _src.dec_ndr_small();
            }
        }
    }

    public static class unicode_string extends NdrObject {

        public short length;
        public short maximum_length;
        public short[] buffer;


        @Override
        public void encode ( NdrBuffer _dst ) throws NdrException {

    static final int TID_OFFSET = 24;
    static final int SMB1_HEADER_LENGTH = 32;

    static final long MILLISECONDS_BETWEEN_1970_AND_1601 = 11644473600000L;

    static final String DEFAULT_OEM_ENCODING = "Cp850";

    static final int FOREVER = -1;

    /**
     * When specified as the <tt>shareAccess</tt> constructor parameter,

                log.println( e );
        }
        lastName = numEntries == 0 ? null : e.name;

        return bufferIndex - start;
    }
    public String toString() {
        return new String( "NetServerEnum2Response[" +
                super.toString() +
                ",status=" + status +
                ",converter=" + converter +
                ",entriesReturned=" + numEntries +

        return 0;
    }
    int readDataWireFormat( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }
    public String toString() {
        return new String( "NetServerEnum2[" + super.toString() +
                ",name=" + name +
                ",serverTypes=" + (serverTypes == SV_TYPE_ALL ?
                        "SV_TYPE_ALL" : "SV_TYPE_DOMAIN_ENUM" ) +

        if ( u.getPath().lastIndexOf('/') != ( u.getPath().length() - 1 ) )
            throw new SmbException(u.toString() + " directory must end with '/'");

        if ( locator.getType() != SmbConstants.TYPE_SERVER )
            throw new SmbException("The requested list operations is invalid: " + u.toString());

        Set<FileEntry> set = new HashSet<>();

        if ( tc.getDfs().isTrustedDomain(tc, locator.getServer()) ) {

        return 0;
    }
    int readDataWireFormat( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }
    public String toString() {
        return new String( "TransWaitNamedPipe[" + super.toString() +
            ",pipeName=" + name + "]" );
    }

        return 0;
    }
    int readDataWireFormat( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }
    public String toString() {
        return new String( "TransCallNamedPipe[" + super.toString() +
            ",pipeName=" + name + "]" );
    }

    @Override
    protected int readDataWireFormat ( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }


    @Override
    public String toString () {
        return new String(
            "Trans2GetDfsReferral[" + super.toString() + ",maxReferralLevel=0x" + this.maxReferralLevel + ",filename=" + this.path + "]");
    }