http://www.rfc-editor.org/rfc/rfc2693.txt
RFC 2693: SPKI Certificate Theory, C. Ellison, B. Frantz, B. Lampson, R. Rivest, B. Thomas, T. Ylonen1999-09-01T23:00:00-00:00This document gives the theory behind SPKI certificates and ACLs without going into technical detail about those structures or their uses. This memo defines an Experimental Protocol for the Internet community.