Policy, privacy and post-quantum: anonymous credentials for everyone

The article discusses the evolving internet landscape with the rise of AI agents and the need for more sophisticated security mechanisms to manage them without compromising user privacy. It introduces the concept of anonymous credentials (AC) being developed at IETF to enforce security policies without identifying users. The article explores the limitations of current tools like blind signatures and introduces Privacy Pass and anonymous credentials as potential solutions. It delves into the technical aspects of building and implementing anonymous credentials, comparing them to blind signatures and VOPRF in terms of communication cost and CPU usage. The article also presents a demo showcasing how anonymous credentials can be used to manage agent traffic effectively while protecting user privacy.