}
        else {
            javaChecksum = sun.security.krb5.internal.crypto.Aes256.calculateChecksum(keybytes, usage, bytes, 0, bytes.length);
        }

        byte[] mac = PacMac.calculateMacHMACAES(usage, makeKey(keybytes, keybytes.length == 16 ? 17 : 18), bytes);
        checkBytes(javaChecksum, mac);

        this( file, false );
    }

/**
 * Creates an {@link java.io.OutputStream} for writing bytes to a file on an
 * SMB server addressed by the URL parameter. See {@link jcifs.smb1.smb1.SmbFile}
 * for a detailed description and examples of the smb URL syntax. If the
 * second argument is <code>true</code>, then bytes will be written to the
 * end of the file rather than the beginning.
 *

    }


    /**
     * Creates an {@link java.io.OutputStream} for writing bytes to a file
     * on an SMB server addressed by the <code>SmbFile</code> parameter. See
     * {@link jcifs.smb.SmbFile} for a detailed description and examples of
     * the smb URL syntax. If the second argument is <code>true</code>, then
     * bytes will be written to the end of the file rather than the beginning.
     * 
     * @param file

    }

/**
 * Reads up to b.length bytes of data from this input stream into an array of bytes.
 *
 * @throws IOException if a network error occurs
 */

    public int read( byte[] b ) throws IOException {
        return read( b, 0, b.length );
    }

/**
 * Reads up to len bytes of data from this input stream into an array of bytes.
 *
 * @throws IOException if a network error occurs
 */

    }


    /**
     * Reads up to b.length bytes of data from this input stream into an array of bytes.
     *
     * @throws IOException
     *             if a network error occurs
     */

    @Override
    public int read ( byte[] b ) throws IOException {
        return read(b, 0, b.length);
    }


    /**
     * Reads up to len bytes of data from this input stream into an array of bytes.
     *

        }
        int t = buffer[ bufferIndex ] & 0xFF;
        return t;
    }

    int type, length;


    /**
     * @param dst
     * @param dstIndex
     * @return written bytes
     */
    public int writeWireFormat ( byte[] dst, int dstIndex ) {
        this.length = writeTrailerWireFormat(dst, dstIndex + HEADER_LENGTH);
        writeHeaderWireFormat(dst, dstIndex);

     *            buffer
     * @return number of bytes read
     * @throws SmbException
     */
    int read ( byte[] b ) throws SmbException;


    /**
     * Read into buffer from current position
     * 
     * @param b
     *            buffer
     * @param off
     *            offset into buffer
     * @param len
     *            read up to <tt>len</tt> bytes
     * @return number of bytes read

    /**
     * Retrieves the MAC address of the remote network interface. Samba returns all zeros.
     * 
     * @param tc
     *            context to use
     *
     * @return the MAC address as an array of six bytes
     * @throws UnknownHostException
     *             if the host cannot be resolved to
     *             determine the MAC address.
     */
    byte[] getMacAddress ( CIFSContext tc ) throws UnknownHostException;

    private static int id = 0;
    private static final Logger log = LoggerFactory.getLogger(Transport.class);


    /**
     * Read bytes from the input stream into a buffer
     * 
     * @param in
     * @param b
     * @param off
     * @param len
     * @return number of bytes read
     * @throws IOException
     */
    public static int readn ( InputStream in, byte[] b, int off, int len ) throws IOException {

                + ",context=" + ( contextBytes == null ? "null" : "<" + contextBytes.length + " bytes>" ) + ",targetInformation="
                + ( targetInformationBytes == null ? "null" : "<" + targetInformationBytes.length + " bytes>" ) + ",flags=0x"
                + jcifs.util.Hexdump.toHexString(getFlags(), 8) + "]";
    }