We'd like to use ACM to manage our certificates, allowing us to easily create them on the fly for a third-party (using CNAME validation). This works great, except we can't appear to get the private key we'd need to support the certificate via our frontend server, which is hosted by AWS but otherwise managed independently of any other AWS service. (It's essentially an Express server running on an EC2 instance.)
Is it possible to get the key value(s) out of ACM so that we can bootstrap a Node https server using them? Or does Amazon not support this at all?