A public key infrastructure (PKI) provides secure communications between 
two different entities over an untrusted network. Due to this ability, 
PKIs are now central to security on the Internet: there are a number of 
large-scale PKIs in use today such as DNSSEC, HTTPS, and the RPKI. 

This course examines basic network security models and public key infrastructure 
that entwines multiple layers of the network stack: application, transport, 
and network layer. Topics include concepts in basic threat models in networking, 
public key infrastructure, data-driven approach for securing the Internet, etc. 
Students are required to write critiques on assigned papers, propose and complete 
a research project individually or in teams, and give presentations on a related topic. 

Prerequisites: CS 4254 or an equivalent course in computer networks at the senior or graduate level.

Course webpage: https://taejoong.github.io/courses/cs6204/#