Decentralized systems are a subset of distributed systems where multiple authorities control
different components and no authority is fully trusted by all. This implies that any component …

The sensitive information of vehicles is related to location in vehicular networks. Pseudonym
change is an effective way to protect the location privacy of vehicles, which is to establish a …

The utility of anonymous communication is undermined by a growing number of websites
treating users of such services in a degraded fashion. The second-class treatment of …

A privacy pool enables clients to deposit units of a cryptocurrency into a shared pool where
ownership of deposited currency is tracked via a system of cryptographically hidden records …

We propose the first verifier-local revocation scheme for privacy-enhancing attribute-based
credentials (PABCs) that is practically usable in large-scale applications, such as national …

In this paper we propose a novel abstraction that we have named Range-Revocable
Pseudonyms (RRPs). RRPs are a new class of pseudonyms whose validity can be revoked …

Verification of a polynomial's evaluation in a secret committed value plays a role in
cryptographic applications such as non-membership or membership proofs. We construct a …

Zero-knowledge blocklists allow cross-platform blocking of users but, counter-intuitively, do
not link users identities inter-or intra-platform, or to the fact they were blocked. Unfortunately …

Existing data management protocols for socially-aware networks assume that users are
cooperative when participating in operations such as data forwarding. However, selfishness …

Anonymous communications networks, such as Tor, help to solve the real and important
problem of enabling users to communicate privately over the Internet. However, in doing so …