Sherief Alaa:
But this is all an endless chain because lets say I download TBB, then download gpg to verify it but then how do I make sure that gpg it self wasn't tampered with? (assuming I don't have it installed already.)
Indeed that's an endless chain and turtles all the way down. plus (as you already mentioned) you also need to install gpg for osx and windows; Which in windows case there's absolutely no secure way to download pgp itself. Poor windows users are screwed by *design*
That being said, I totally support making this process easier. In fact, I dream a day where TBB could itself (or TorButton perhaps) check and see if all of it's executable files are identical to the latest version on repository in a secure way without confusing (or even say noticing) the average user.
Maybe this can be part of the auto-update project?
But whatever it is, it can't be a simple tiny app.