PGP kerserver infrastructure

If you guys are serious about being the latest cast and crew to pursue this, here's a resource you might want to be aware of: http://www.imc.org/ietf-openpgp/ You also might want to look at this message from their mailing list archive: http://www.imc.org/ietf-openpgp/mail-archive/msg02132.html They have a pgp-directory mailing list, and all of this has been discussed before, so perhaps it can save you some research.