First, thanks so much for open sourcing your launcher. I've been having a lot of fun playing around with the code and tweaking it for a small custom server I am setting up. I have run into a little snag with digitally signing update files. I was not able to find any documentation on this so I have a few questions. Can I use a self-signed SSL/TLS certificate for the files? I have signed certificates from StartSSL for a web server. Can I use those certificates? Is there a specific program I should use to sign the files?