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.
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.