Digital credentials represent digital versions of physical credentials. They are the
cornerstone of digital identity on the Internet. In order to enhance privacy, different authors …

Contact discovery is a crucial component of social applications, facilitating interactions
between registered contacts. This work introduces Arke, a novel approach to contact …

We tackle the challenge of reliably determining the geolocation of nodes in decentralized
networks, considering adversarial settings and without depending on any trusted landmarks …

In this paper we present MiXiM, a simulation framework for mixnets that allows researchers
to evaluate different design options and their tradeoffs. This framework is flexible and allows …

We propose a method to optimally select mix network parameters for a given deployment
context and adversarial model. Our method considers both worstcase and average-case …

We analyze the anonymity provided by continuous mixnets (eg, Loopix) when messages
with different latency requirements are sent through the same network. The anonymity …

Anonymous communication systems such as mix networks achieve anonymity at the
expense of latency that is introduced to alter the flow of packets and hinder their tracing. A …

Mixnets provide communication anonymity against network adversaries by routing packets
independently via multiple hops, delaying them artificially at each hop, and introducing …

Mixnets provide strong meta-data privacy and recent academic research and industrial
projects have made strides in making them more secure, performant, and scalable. In this …

In recent years, personal and medical data collected through mobile apps has become a
useful data source for researchers. Platforms like Apple ResearchKit try to make it as easy …