Five Lectures on Anonymous Communications

George Danezis has put together a great series of lectures on modern anonymous communications, available from his Conspicuous Communication blog here. The lectures cover

1. Basic definitions & unconditional anonymity with DC-networks.
2. Long-term attacks on anonymity systems (Statistical / Disclosure) and their Bayesian formulation.
3. Mix networks and anonymity metrics.
4. The Bayesian traffic analysis of mix networks.
5. Low-latency anonymity with onion routing and crowds.

About 150 slides of material.

Short cryptography lecture from Scott Aaronson

Here is a short cryptography lecture from Scott Aaronson, delivered as part of his Quantum Computing Since Democritus course given at the University of Waterloo, Fall 2006. The lecture gives a short text-based overview of crypto from mainly a complexity point of view, and discusses some of the implications of the “P = NP?” question for crypto.