Tor [Dingledine et al. 2004] is the most widely used anonymity network today, serving
millions of users on a daily basis using a growing number of volunteer-run routers. Since its …

The first edition of this book was published in 2003. Inevitably, certain parts of the book
became outdated quickly. At the same time new developments have continued apace …

We introduce cMix, a new approach to anonymous communications. Through a
precomputation, the core cMix protocol eliminates all expensive real-time public-key …

Abstract cMix is a cryptographic protocol for mix networks that uses precomputations of a
group-homomorphic encryption function to avoid all real-time public-key operations by the …

Abstract Authenticated Key Exchange (AKE) is a cryptographic protocol to share a common
session key among multiple parties. Usually, PKI-based AKE schemes are designed to …

The anonymous communication protocol Tor constitutes the most widely deployed
technology for providing anonymity for user communication over the Internet. Several …

The onion routing (OR) network Tor provides anonymity to its users by routing their
encrypted traffic through three proxies (or nodes). The key cryptographic challenge, here, is …

This paper presents a prototype virtual reality (VR) system for training medical first
responders. The initial application is to battlefield medicine and focuses on the training of …

The popularity of Internet applications has made communication privacy an increasingly
important security requirement. As an important aspect of privacy, anonymity ensures that a …

Many anonymous communication networks (ACNs) rely on routing traffic through a
sequence of proxy nodes to obfuscate the originator of the traffic. Without an accountability …