Privacy-Preserving Authentication: Mercurial Signatures

This lecture covers the concept of Attribute-Based Credentials and the research on Mercurial Signatures by Pr. Anna Lysyanskaya. It discusses the privacy concerns with traditional authentication methods, introduces Attribute-Based Credentials, and explains the properties of Mercurial Signatures. The lecture delves into the construction and additional functions of Mercurial Signatures, including randomized signature schemes and proving possession of signed credentials. It also explores delegatable anonymous credentials and the concept of Mercurial certification chains. The presentation concludes by discussing the limitations of the construction and the importance of preserving user privacy in authentication processes.