The importance of safeguarding individuals' privacy rights in online activities is unmistakable
in today's anonymity networks. Since the introduction of Mixnet by Chaum, numerous …

This work investigates the fundamental constraints of anonymous communication (AC)
protocols. We analyze the relationship between bandwidth overhead, latency overhead, and …

Protecting individuals' privacy in online communications has become a challenge of
paramount importance. To this end, anonymous communication (AC) protocols such as the …

Abstract TLS (Transport Layer Security) is a widely deployed protocol that plays a vital role
in securing Internet trafic. Given the numerous known attacks for TLS 1.2, it was imperative …

Many anonymous communication networks (ACNs) with different privacy goals have been
developed. However, there are no accepted formal definitions of privacy and ACNs often …

Talek is a private group messaging system that sends messages through potentially
untrustworthy servers, while hiding both data content and the communication patterns …

In end-to-end encrypted (E2EE) messaging systems, protecting communication metadata,
such as who is communicating with whom, at what time, etc., remains a challenging …

After several years of research on onion routing, Camenisch and Lysyanskaya, in an attempt
at rigorous analysis, defined an ideal functionality in the universal composability model …

In this paper we present MATor: a framework for rigorously assessing the degree of
anonymity in the Tor network. The framework explicitly addresses how user anonymity is …

Censorship of information on the Internet has been an increasing problem as the methods
have become more sophisticated and increasing resources have been allocated to censor …