Does your app need to deal with code signatures?
Are you sick of the ugly CoreFoundation interface for dealing with them?
Then fret no more;
CSCodeSignature is a nice Swifty wrapper around the macOS code signing framework.
Just pass it a
URL to a file in the file system, and
CSCodeSignature will tell you whether it is signed or not, as well as provide a bunch of information about the signature.
This library is free for any use.