otes=true href=/v1.8/docs/tasks/security/cert-management/plugin-ca-cert/ca-hierarchy.svg title="CA Hierarchy"><img class=element-to-stretch src=/v1.8/docs/tasks/security/cert-management/plugin-ca-cert/ca-hierarchy.svg alt="CA Hierarchy"></a></div><figcaption>CA Hierarchy</figcaption></figure><p>This task demonstrates how to generate and plug in the certificates and key for Istio&rsquo;s CA. These steps can be repeated
to provision certificates and keys for any number of Istio CAs.</p><h2 id=plug-in-certific