}
            catch ( GSSException e ) {
                throw new SmbException("Context disposal failed", e);
            }
        }
    }

    /*
     * Prepare reflective access to ExtendedGSSContext. The reflective access
     * abstracts the access so far, that Oracle JDK, Open JDK and IBM JDK are
     * supported.
     * 
     * At the time of the first implementation only a test on Oracle JDK was

    @Override
    public boolean verifySignature ( byte[] buffer, int i, int size ) {
        // observed too that signatures on error responses are sometimes wrong??
        // Looks like the failure case also is just reflecting back the signature we sent

        // with SMB3's negotiation validation it's no longer possible to ignore this (on the validation response)
        // make sure that validation is performed in any case

            log.error("Server returned invalid hash selection");
            return false;
        }
        return true;
    }


    private static boolean checkEncryptionContext ( Smb2NegotiateRequest req, EncryptionNegotiateContext ec ) {
        if ( ec.getCiphers() == null || ec.getCiphers().length != 1 ) {
            log.error("Server returned no cipher selection");
            return false;
        }

    boolean isDisablePlainTextPasswords ();


    /**
     * 
     * 
     * Property <tt>jcifs.resolveOrder</tt> (string, default <tt>LMHOSTS,DNS,WINS,BCAST</tt>)
     * 
     * @return order and selection of resolver modules, see {@link ResolverType}
     */
    List<ResolverType> getResolveOrder ();


    /**
     * 
     * Property <tt>jcifs.netbios.baddr</tt> (string, default <tt>255.255.255.255</tt>)

         * suggests MS doesn't compute the signature (correctly) for error responses
         * (perhaps for DOS reasons).
         */
        /*
         * Looks like the failure case also is just reflecting back the signature we sent
         */

        /**
         * Maybe this is related:
         *