gnome-gpg improvement
The gnome-gpg utility makes PGP a bit nicer to use on Gnome with the following features: Present a Gnome password entry dialog for passphrase entry. Allow the user to store the passphrase in the session or permanent keyring, so it can be provided automatically next time. Unfortunately there are a few usability issues: The anonymous/authenticated user radio buttons are displayed in the password entry dialog, while they aren't needed. The passphrase is prompted for even if gpg does not require it to complete the operation. If the passphrase is entered incorrectly, the user is not prompted for it again like they would be with plain gpg. If an incorrect passphrase is provided by gnome-keyring-daemon, you need to remove the item using gnome-keyring-manager or use the --force-passphrase command line argument. I put together a patch to fix these issues by using gpg's --status-fd/--command-fd interface. Since this provides status information to gnome-gpg, it means it knows when to prompt for and send the passphrase, and when it gave the wrong passphrase. I also swiped the zenity_util_show_dialog() function from Zenity to make the password dialog a transient of the terminal that ran it, so the passphrase dialog stays on the same desktop and can't be obscured by that terminal. The changes can be found here: http://www.gnome.org/~jamesh/arch/james@jamesh.id.au/gnome-gpg--devel--0 (a Bazaar 1.x branch, since Colin was using Arch). There are still a few issues with handling non-password prompts from gpg, but it works quite well for the basics.