Seahorse is a GNOME application for managing encryption keys and passwords in the GNOME Keyring. With Seahorse you can...

Encrypt/decrypt/sign files and text. Manage your keys and keyring. Synchronize your keys and your keyring with key servers. Sign keys and publish. Cache your passphrase so you don't have to keep typing it. Backup your keys and keyring. Add an image in any GDK supported format as a OpenGPG photo ID. Create SSH keys, configure them, cache them. More...