gnupg : The GNU Privacy Guard, a GPL pgp replacement ( http://www.gnupg.org/ )
mit-krb5 : MIT Kerberos V ( https://web.mit.edu/kerberos/www/ )
pinentry : Simple passphrase entry dialogs which utilize the Assuan protocol ( https://gnupg.org/aegypten2/index.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a srcshelton
For Paludis use this rsync : rsync://gentoo.zugaina.org/srcshelton-portage
If you have a problem : ycarus(-at-)zugaina.org