Creating a signed extension for Flash CC

Hey all,

I'm really confused on how to create a signed extension for flash. When I say flash extension, I mean a javascript flash extension: JSFL. When I google this question all I get is references to Adoble Extension Builder, the plugin for flash builder. I tried this plugin and all I can get is a template to create AIR extensions. I want to create a JSFL, not AIR panels inside flash IDE or anything.... just JSFL.

So I have my JSFL, and I know how to create a ZXP from a MXI, but... how can I make it officially signed ? I have a cert.p12 file I use to creates signed AIR application release builds, can I use this? How can I use it?

Thanks in advance!