Get Info on an .App does not produce the signature information. On windows for instance, right-click/properties will expose who signed the file.
How do I get that info on Mac for a given .app?
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OS X doesn't have anything built in for this. If you downed Xcode and install the command line tools, you can check a file by issuing the following command in Terminal: There is a free tool that implements the functions of the codesign command and extends it with a nice GUI. It's called RB App Checker (on the App Store) as well as a site describing the program http://brockerhoff.net/RB/AppCheckerLite/ I've not needed anything but these two tools for checking code signing on OS X so hopefully they fit your needs. Do check out the AppChecker first unless you have a burning desire to dig into Xcode and use a somewhat arcane command line tool to check code signatures. As to how you would know, the OS will show untrusted apps as dim and with a generic icon until the gatekeeper process approves a bundle to run - but that code could still be signed so you can't rely on a visual clue to necessarily tell if some code has or has not been signed - especially considering that gatekeeper could be disabled on a given Mac. |
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