int klen = keybytes.length;
        byte[] dk = new byte[klen];
        for ( int n = 0; n < klen; ) {
            byte[] block = cipher.doFinal(enc);
            int len = Math.min(klen - n, block.length);
            System.arraycopy(block, 0, dk, n, len);
            n += len;
            enc = block;
        }
        return dk;
    }


    public static byte[] expandNFold ( byte[] data, int outlen ) {

 * 
 * 
 * @author mbechler
 *
 */
public interface SmbWatchHandle extends AutoCloseable, Callable<List<FileNotifyInformation>> {

    /**
     * Get the next set of changes
     * 
     * Will block until the server returns a set of changes that match the given filter. The file will be automatically
     * opened if it is not and should be closed with {@link #close()} when no longer
     * needed.
     * 

    static final int CAP_NT_SMBS = 0x0010;
    static final int CAP_RPC_REMOTE_APIS = 0x0020;
    static final int CAP_STATUS32 = 0x0040;
    static final int CAP_LEVEL_II_OPLOCKS = 0x0080;
    static final int CAP_LOCK_AND_READ = 0x0100;
    static final int CAP_NT_FIND = 0x0200;
    static final int CAP_DFS = 0x1000;
    static final int CAP_LARGE_READX = 0x4000;
    static final int CAP_LARGE_WRITEX = 0x8000;

     */
    public void setTarget ( String target ) {
        this.target = target;
    }


    /**
     * Returns the target information block.
     *
     * @return A <code>byte[]</code> containing the target information block.
     *         The target information block is used by the client to create an
     *         NTLMv2 response.
     */
    public byte[] getTargetInformation () {

    a {
        display: block;
        float: left;
        width: 300px;
        height: 50px;
        padding: 2px;
        font-family: Verdana, sans-serif;
        font-size: 10pt;
        color: #000000;
        text-decoration: none;
    }
    a.plain {
        display: inline;
        float: none;
        width: auto;
        height: auto;
    }
    a.sort {
        display: block;
        float: left;

    public static final int NTLMSSP_REQUEST_NON_NT_SESSION_KEY = 0x00400000;

    /**
     * Sent by the server in the Type 2 message to indicate that it is
     * including a Target Information block in the message. The Target
     * Information block is used in the calculation of the NTLMv2 response.
     */
    public static final int NTLMSSP_NEGOTIATE_TARGET_INFO = 0x00800000;

    /**
     * 
     */

        }
    }


    public void assertCloseTime ( long timeMs ) {
        if ( timeMs - System.currentTimeMillis() > 5 * 60 * 1000L ) {
            assertTrue("Time is not within 30s, check clocks " + new Date(timeMs), false);
        }
    }


    @Test
    public void testLastModified () throws CIFSException, MalformedURLException, UnknownHostException {
        try ( SmbResource f = createTestFile() ) {

            while ( len > blockSize && n == r );
            // this used to be len > 0, but this is BS:
            // - InputStream.read gives no such guarantee
            // - otherwise the caller would need to figure out the block size, or otherwise might end up with very small
            // reads
            return (int) ( this.fp - start );
        }
    }


    /**

        int start = bufferIndex;
        for ( int i = 0; i < this.unlocks.length; i++ ) {
            this.unlocks[ i ] = createLockRange();
            bufferIndex += this.unlocks[ i ].decode(buffer, bufferIndex, buffer.length);
        }

        for ( int i = 0; i < this.locks.length; i++ ) {
            this.locks[ i ] = createLockRange();
            bufferIndex += this.locks[ i ].decode(buffer, bufferIndex, buffer.length);
        }

    private byte[] fileId;
    private final Smb2Lock[] locks;


    /**
     * @param config
     * @param fileId
     * @param locks
     */
    public Smb2LockRequest ( Configuration config, byte[] fileId, Smb2Lock[] locks ) {
        super(config, SMB2_LOCK);
        this.fileId = fileId;
        this.locks = locks;
    }


    /**
     * {@inheritDoc}
     *