Seahorse is a GNOME front-end for GnuGP.  It can be used for signing,
encrypting, verifying and decrypting text and files.  The text can be
taken from the clipboard, or written directly in the little editor it
has.  Seahorse is also a keymanager, which can be used to edit almost
all the properties of the keys stored in your keyrings.

This package contains various plugins for Seahorse.