Privacy, facilitated by a confluence of cryptography and decentralization, is one of the
primary motivations for the adoption of cryptocurrencies like Bitcoin. Alas, Bitcoins privacy …

Anonymous Committed Broadcast is a functionality that extends DC-nets and allows a set of
clients to privately commit messages to set of servers, which can then simultaneously open …

Recent work has demonstrated significant anonymity vulnerabilities in Bitcoin's networking
stack. In particular, the current mechanism for broadcasting Bitcoin transactions allows third …

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

In this paper, we study the quantification, practice, and implications of structural data (eg,
social data, mobility traces) De-Anonymization (DA). First, we address several open …

A growing body of research leverages social network based trust relationships to improve
the functionality of the system. However, these systems expose users' trust relationships …

This paper introduces Mycelium, the first system to process differentially private queries over
large graphs that are distributed across millions of user devices. Such graphs occur, for …

A credit network models trust between agents in a distributed environment and enables
payments between arbitrary pairs of agents. With their flexible design and robustness …