"Seahorse is a Gnome front end for GnuPG--the Gnu Privacy Guard program. It is a tool for secure communications and data storage. Data encryption and digital signature creation can easily be performed through a GUI and Key Management operations can easily be carried out through an intuitive interface.
"In addition it includes a Gedit plugin, can handle files using Nautilus, an applet for managing stuff put in the clipboard and an agent for storing private passphrases, as well as a GnuPG and OpenSSH key manager..."