ntHash = auth.getUnicodeHash( session.transport.server.encryptionKey );
                    // prohibit HTTP auth attempts for the null session
                    if (lmHash.length == 0 && ntHash.length == 0) {
                        throw new RuntimeException("Null setup prohibited.");
                    }
                } else if( DISABLE_PLAIN_TEXT_PASSWORDS ) {

                        this.ntHash = a.getUnicodeHash(tc, server.encryptionKey);
                        // prohibit HTTP auth attempts for the null session
                        if ( this.lmHash.length == 0 && this.ntHash.length == 0 ) {
                            throw new RuntimeException("Null setup prohibited.");
                        }
                    }