
The package description says in part: "GnuPG 1.4 is the standalone, non-modularized series. The package gnupg (including the command gpg) is installed on all Ubuntu systems. For a brief description of what OpenPGP is see the next section. This page describes how to use OpenPGP keys. The public key may be given to anyone with whom the user wants to communicate." From The GNU Privacy Handbook A user's private key is kept secret it need never be revealed. In a public-key system, each user has a pair of keys consisting of a private key and a public key. "GnuPG uses public-key cryptography so that users may communicate securely.

Making an ASCII armored version of your public key.
