Good afternoon everyone!
As you may know, many companies that sell SSL certificates offer free trial certificates (that usually expire in 30 or 50 days). StartCom is the exception - they give 1-year free SSL Class 1 certificates.
The question is: are these certificates enough for me to sign my Firefox extension? Note: I'm not asking if these are good for the task - I want to discuss only the physical possibility of code signing the xpi file with these free certificates.
Thank you.
You need a code signing certificate and not an SSL certificate to sign an add-on. None of the ones you listed will work.