Digital signature is a fundamental primitive with numerous applications. Following the
development of pairing-based cryptography, several taking advantage of this setting have …

This survey reviews the two most prominent group-oriented anonymous signature schemes
and analyzes the existing approaches for their problem: balancing anonymity against …

We construct an efficient dynamic group signature (or more generally an accountable ring
signature) from isogeny and lattice assumptions. Our group signature is based on a simple …

Support of membership revocation is a desirable functionality for any group signature
scheme. Among the known revocation approaches, verifier-local revocation (VLR) seems to …

Group signatures are a central cryptographic primitive that has received a considerable
amount of attention from the cryptographic community. They allow members of a group to …

Existing threshold signature schemes come in two flavors:(i) fully private, where the
signature reveals nothing about the set of signers that generated the signature, and (ii) …

Abstract We present UnTraceable Transactions (UTT), a system for decentralized ecash with
accountable privacy. UTT is the first ecash system that obtains three critical properties:(1) it …

Traditional group signatures feature a single issuer who can add users to the group of
signers and a single opening authority who can reveal the identity of the group member who …

Anonymous credentials are a powerful tool for making assertions about identity while
maintaining privacy and have been the subject of study for many years. The interest in …

Massive IoT devices are used for data collection with the fast development of the Internet-of-
things (IoT). For example, wearable devices are used to collect users' health data and …