static final int CLIENT_UPN_TYPE = 0xC;
    static final int CLIENT_CLAIMS_TYPE = 0xD;
    static final int DEVICE_INFO_TYPE = 0xE;
    static final int DEVICE_CLAIMS_TYPE = 0xF;

    static final int LOGON_EXTRA_SIDS = 0x20;
    static final int LOGON_RESOURCE_GROUPS = 0x200;

    static final int MD5_KRB_SALT = 17;
    static final int MD5_BLOCK_LENGTH = 64;

     *
     * @param data
     *            The data.
     * @param offset
     *            The starting offset at which the SMB header begins.
     * @param length
     * @param extraPad
     *            extra padding to include in signature
     * @param msg
     *            The message to verify
     * @return whether verification was unsuccessful
     */