return false;
            }
            else if ( !foundPreauth && ncr.getContextType() == PreauthIntegrityNegotiateContext.NEGO_CTX_PREAUTH_TYPE ) {
                foundPreauth = true;
                PreauthIntegrityNegotiateContext pi = (PreauthIntegrityNegotiateContext) ncr;
                if ( !checkPreauthContext(req, pi) ) {
                    return false;
                }