Today, digital identity management for individuals is either inconvenient and error-prone or
creates undesirable lock-in effects and violates privacy and security expectations. These …

Frequently, users on the web need to show that they are, for example, not a robot, old
enough to access an age restricted video, or eligible to download an ebook from their local …

Developers building cryptography into security-sensitive applications face a daunting task.
Not only must they understand the security guarantees delivered by the constructions they …

This article presents LiteZKP a framework for supporting multiple anonymous payments
using a smart contract-based zero-knowledge proof (ZKP) protocol on resource-limited …

The human internet of things (HIoT) is a promising trend that adopts a user-centered vision
to improve life quality by interacting with heterogeneous physical and virtual entities and the …

Zero-Knowledge Proofs (ZKPs) are cryptographic primitives allowing a party to prove to
another party that the former knows some information while keeping it secret. Such a …

Identity sharing systems, regardless of their architectural models, share common
vulnerabilities. These systems compel users to divulge personal information and furnish …

Non-interactive zero-knowledge proofs are a powerful cryptographic primitive used in
privacy-preserving protocols. We design and build C $\emptyset $ C $\emptyset $, the first …

Practical anonymous credential systems are generally built around sigma-protocol ZK
proofs. This requires that credentials be based on specially formed signatures. Here we ask …

In this work we improve upon the state of the art for practical zero-knowledge for set
membership, a building block at the core of several privacy-aware applications, such as …