How do you sign your Firefox extensions?

Question

I have developed a couple of extensions for Firefox, and am annoyed that it is so hard to get the extension signed. When an extension isn\'t signed, it says \"Author not ve

Answer 1

I've used the comodo certificate to sign XPIs. It was the cheapest option at the time.

I've written a few posts on the XPI Format and a howto for signing using a java commandline tool.

My tool XPISigner simplifies the process considerably and is integratable into build systems.

I've removed the tool as it no longer works with FF4 or higher. Source is available on http://code.google.com/p/xpisigner/ if anyone feels like fixing.