This tutorial starts with a review of Symmetric and Asymmetric (PKI) Encryption. It discusses self signed certificates and how an SSL certificate is used in a ClientServer web communication session.

05:31 digital certificate 06:31 trust 06:45 CA 06:52 A certificate authority validates the identity of the certificate holder 07:21selfsigned certificate 08:55 user identification 12:37 selfsigned certificate 15:14 testing 15:25 selfsigned certificate , root certificate 17:18

This is the second in a series on how encryption and certificates work. Other videos are:
Introduction to Encryption
Certificates: Chain of Trust