OpenPGP
GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key directories.
GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC 4880 (also known as PGP or Pretty Good Privacy).
Note
Throughout this documentation we assume GnuPG version 2.2.x as pre-installed in Ubuntu 20.04.
Contents:
Yubikey Neo
Store your private keys on a secure hardware device, and use it everywhere, instead of storing the as files on disks.
See GnuPG with Yubikey.
Enigmail
Encrypt, decrypt, digitally sign and verify your mail communications.
See Mail Client.