Jumping right in, let’s create our PGP public/private key pair. I’ll use GnuPG, the Gnu Privacy Guard, available at http://www.gnupg.org, and which is very likely already available with your Linux distribution. If you want to use older free or commercial PGP versions, the commands are very similar. Any GUI front end will also have the same functionality.
File and Email Encryption with GnuPG (PGP) Part One
File and mail security is easy to achieve with the right tools. PGP has proven itself the leader, and GnuPG is the tool of choice in the Linux world.