Recent work, including ZKBoo, ZKB++, and Ligero, has developed efficient non-interactive
zero-knowledge proofs of knowledge (NIZKPoKs) for Boolean circuits based on symmetric …

We describe Charm, an extensible framework for rapidly prototyping cryptographic systems.
Charm provides a number of features that explicitly support the development of new …

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

This paper presents efficient off-line anonymous e-cash schemes where a user can
withdraw a wallet containing 2 ℓ coins each of which she can spend unlinkably. Our first …

Non-interactive zero-knowledge proofs play an essential role in many cryptographic
protocols. We suggest several NIZK proof systems based on prime order groups with a …

It is usually the case that before a transaction can take place, some mutual trust must be
established between the participants. On-line, doing so requires the exchange of some …

We propose a novel group signature based security framework for vehicular
communications. Compared to the traditional digital signature scheme, the new scheme …

As we move into a new decade, the global world of Intelligent Infrastructure (II) services
integrated into the Internet of Things (IoT) are at the forefront of technological advancements …

We construct a new group signature scheme using bilinear groups. The group signature
scheme is practical, both keys and group signatures consist of a constant number of group …

Ring signatures and group signatures are prominent cryptographic primitives offering a
combination of privacy and authentication. They enable individual users to anonymously …