@Fu GnuPG works, but no one seems to like using it. The #SequoiaPGP project is re-writing PGP in Rust, as a library with a command line interface built on top, and with a detailed test suite. So that seems promising in itself. But beyond that, there is a new RFC coming for OpenPGP, with seven or so different PGP projects collaborating on it -- the ecosystem is growing.
I've also recently set up a #Protonmail account, finally giving me a reason to configure, test and use PGP signed e-mails.
Mamot.fr est un serveur Mastodon francophone, géré par La Quadrature du Net.