edit: I am not specifically tied to pgp, I just want an encryption method that uses a public key to decrypt and a private one to encrypt
GPG is probably the most commonly used one. If you want something with a slightly less awkward command line interface, you could try sequoia-pgp.
Kleopatra for a gui
Alternatively there is also GNU privacy assistant (GPA)
Is “PGP” part of the requirement, or are you looking for an asymmetric encryption scheme for files? If you are not tied to PGP, you could look at age, which is a bit more modern and less complex. Lower complexity is always good.
I’ve now been using age for a bit on opensuse and I recommend it, seems really secure and is a lot simpler.
Kgpg is easy to use
vim-gnupg. If gpg-agent is setup and you connect with ssh with X11 forwarding enableed, gpg will popup it’s passphrase entry box (even on WSL Windows 11 or Chrome OS). Easy and convenient if you have a pgp key.
You can also configure pinentry-curses of pinentry-tty and use the same setup without X11 forwarding. This also works with neovim!
