Many Internet protocols and applications which use the Internet employ public key technology for security purposes and require a public key infrastructure to manage public keys.
CapabilitiesAsKeysModel, PasswordCapabilityModel
I'm not sure what this is. Judging by the web page, it appears:
Anyone with any more information?
-- LionKimbro
Here is a link to page about SPKI: http://theworld.com/~cme/html/spki.html
The page is pretty good in my opinion.
-- Zarutian