SecretKeySpec dataKey = new SecretKeySpec(dataHmac, KerberosConstants.RC4_ALGORITHM);

        cipher = Cipher.getInstance(KerberosConstants.RC4_ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, dataKey);

        int plainDataLength = data.length - KerberosConstants.CHECKSUM_SIZE;
        byte[] plainData = cipher.doFinal(data, KerberosConstants.CHECKSUM_SIZE, plainDataLength);

    /**
     * 
     * @param key
     * @return RC4 cipher
     */
    public static Cipher getArcfour ( byte[] key ) {
        try {
            Cipher c = Cipher.getInstance("RC4");
            c.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key, "RC4"));
            return c;
        }
        catch (
            NoSuchAlgorithmException |
            NoSuchPaddingException |
            InvalidKeyException e ) {

            throws CIFSException {
        this.file = file;
        this.handle = handle;
        this.openFlags = openFlags;
        this.access = access;
        this.sharing = sharing;
        this.append = false;
        this.smb2 = th.isSMB2();
        init(th);
    }


    /**
     * @param th

     * @param key
     * @throws GeneralSecurityException
     */
    private static void verifyAESMAC ( int usage, String expect, String data, String key ) throws GeneralSecurityException {
        verifyAESHMAC(usage, expect, key, Hex.decode(data));
    }


    private static void verifyArcfourHMAC ( int usage, String expect, String data, String key ) throws GeneralSecurityException {

    /**
     * 
     */
    public static final int SMB2_SHAREFLAG_RESTRICT_EXCLUSIVE_OPENS = 0x100;
    /**
     * 
     */
    public static final int SMB2_SHAREFLAG_FORCE_SHARED_DELETE = 0x200;
    /**
     * 
     */
    public static final int SMB2_SHAREFLAG_ALLOW_NAMESPACE_CACHING = 0x400;
    /**
     * 
     */

public class NegTokenInit extends SpnegoToken {

    public static final int DELEGATION = 0x80;
    public static final int MUTUAL_AUTHENTICATION = 0x40;
    public static final int REPLAY_DETECTION = 0x20;
    public static final int SEQUENCE_CHECKING = 0x10;
    public static final int ANONYMITY = 0x08;
    public static final int CONFIDENTIALITY = 0x04;
    public static final int INTEGRITY = 0x02;

        int origBufferSize = ctx.getConfig().getMaximumBufferSize();
        // odd buffer size that does match the alignment
        int tryBufferSize = 1023;
        final int bufSize[] = new int[] {
            origBufferSize
        };
        ctx = withConfig(ctx, new DelegatingConfiguration(ctx.getConfig()) {

            @Override
            public int getMaximumBufferSize () {

                    // only have second precision
                    // there seems to be some random factor (adding one second)
                    int diff = Math.abs((int) ( ( time / 1000 ) - ( f.lastModified() / 1000 ) ));
                    Assert.assertTrue("Have set time correctly", diff < 2);
                }
                else {

        }
    }


    /**
     * 
     * {@inheritDoc}
     *
     * @see jcifs.CIFSContext#getPipe(java.lang.String, int)
     */
    @Override
    public SmbPipeResource getPipe ( String url, int pipeType ) throws CIFSException {
        try {
            return new SmbNamedPipe(url, pipeType, this);
        }
        catch ( MalformedURLException e ) {

     */
    @Override
    protected int writeBytesWireFormat ( byte[] dst, int dstIndex ) {
        return 0;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#readBytesWireFormat(byte[], int)
     */
    @Override
    protected int readBytesWireFormat ( byte[] buffer, int bufferIndex ) throws SMBProtocolDecodingException {