The Denodo Platform embeds the Apache Tomcat web container to host its web applications and web services. The Data Catalog is one of the applications running on the web container. I’d refer to[ the Enabling HTTPS in the Embedded Apache Tomcat section](https://community.denodo.com/docs/html/browse/8.0/en/platform/installation/postinstallation_tasks/enable_ssl_connections_in_the_denodo_platform_servers/enabling_https_in_the_embedded_apache_tomcat) of the Denodo installation Guide to see how to enable HTTPS in the web container.
Also, I’d suggest checking [the Denodo SSL/TLS Configurator Script](https://community.denodo.com/docs/html/browse/8.0/en/platform/installation/postinstallation_tasks/enable_ssl_connections_in_the_denodo_platform_servers/denodo_tls_configurator_script#denodo-ssl-tls-configurator-script) as it is a good alternative for making this process easier. This script automates the process of enabling SSL in the web container and other Denodo tools.
Hope this helps!