I'm in the process of migrating from IIS on Windows 2012 to nginx on Ubuntu 16.04. I'm familiar with nginx but not IIS.
On nginx, to have HTTPS working you need both the certificate and the private key. These correspond to the nginx config fields
ssl_certificate_key. I have access to the certificates on IIS and have downloaded them.
But I have no idea where to find the private key though and no one in the organisation does either. I have access to the IIS server, where would I find the private key file for the certificate? Failing that, is my only option to get a new certificate?