Using my ssl certificate to a sub domain

Question

I have a webshop build in Wordpress hosted in Apache. I have created a new version for my front end, build in Google App Engine.

What I want to achieve is my naked domain to point at App Engine and a subdomain called shop.mydomain.com to point in the old Wordpress solution of the shop.

My certificate is for mydomain.com. Is it still going to work for shop.mydomain.com?

Answer 1

Is it still going to work for shop.mydomain.com?

No, you'll need either another certificate for shop.mydomain.com or a wildcard certificate for *.mydomain.com (which is not cheap).

Wildcard certificate

A wildcard certificate is a public key certificate which can be used with multiple subdomains of a domain.