Dartmouth College PKI Lab 
Project to develop inter-institutional applications. Includes related links, research information and results, and contact information.
http://www.dartmouth.edu/~pkilab/NIST PKI Program
An initiative to coordinate industry and technical groups developing PKI technology to foster interoperability of PKI products and projects. (National Institute of standards and Technology)
http://csrc.nist.gov/pki/
The PKI Page
This page contains links to various sites and documents related to Public Key Infrastructure (PKI) material, especially links certificate authorities (CAs). (Stefan Kelm)
http://www.pki-page.org/
The Open Source PKI Book
An attempt to register the available open source concerning PKI, and useful technical background info.
http://ospkibook.sourceforge.net/
Query Certificate Managers
Managing authenticated transmission of sensitive information over an insecure network.
http://www.cis.upenn.edu/~qcm/
Public Key Infrastructure
Standards developed by the Open Group regarding PKI.
http://archive.opengroup.org/public/tech/security/pki/index.htm
