No need for homebrew or anything like that. Works with https://www.git-tower.com and the command line.
- Install https://gpgtools.org -- I'd suggest to do a customized install and deselect GPGMail.
- Create or import a key -- see below for https://keybase.io
- Run
gpg --list-secret-keys
and look forsec
, use the key ID for the next step - Configure
git
to use GPG -- replace the key with the one fromgpg --list-secret-keys