div></div></nav></div><div class="col-12 col-md-9 col-lg-7 col-xl-8"><p class="d-md-none"> <label class="sidebar-toggler" data-toggle="offcanvas"> <i class="fa fa-chevron-right"></i> </label></p><main role="main"><h1>Plugging in CA certificate and key</h1><p>This task shows how operators can plug existing certificate and key into Istio CA.</p><p>By default, the Istio CA generates self-signed CA certificate and key and uses them to sign the workload certificates. The Istio CA can also use the operator-specif