Visiting verisign.com you will see a one year Code Signing Certificate will set you back US $ 499,-
According to Adobe’s Flash Builder documentation only Certificates from the big four CA’s are trusted:
“A developer can use any class-3, high-assurance certificate provided by any CA to sign an Adobe AIR application. However, only ChosenSecurity, GlobalSign, Thwarte, and VeriSign come pre-installed on most end user’s machines (Mac OS X or Windows) and are trusted by the operating systems.”
These companies ask an amazing amount of money for a certificate, luckily there are better alternatives. The one I got was available for $75,- a year. This of course raises the question whether this certificate will be accepted, but I did found a couple of blog posts that reassured me this shouldn’t be a problem.
Hop over to author.tucows.com, register for an account and you will be able to purchase a Comodo Certificate through tucows.
The process will take some time. You will have to email documents to proof your business/person identity and they probably call you as well. After receiving the certificate and signing the AIR package I was able to install my signed software successfully on:
- Windows 7
- Windows Vista
- Windows XP
- Mac OS X (10.6).
Unfortunately Ubuntu Linux 10.04 fails to recognize/trust the certificate out of the box (thanks to Jaap for testing this)