I'm researching cryptography applications to identity management, mostly in the areas of privacy-enhancing technology (PET), zero-knowledge proofs of knowledge and anonymous credential systems. My overall goal is to establish a combination of strong authentication and privacy in identity management. Much of my past research has been on IBM's anonymous credential system Identity Mixer. Watch IBM's Identity Mixer YouTube video!. Beyond its integration into standardized identity federation protocols, I've contributed to a highly efficient attribute encoding for resource-constrained environments based on prime numbers and divisibility. I'm a contributor to the Identity Mixer community page.
Jan Camenisch and Thomas Groß. Efficient attributes for anonymous credentials. In ACM Transactions on Information and System Security (TISSEC), 2011.
Jan Camenisch, Nathalie Casati, Thomas Groß and Victor Shoup. Credential Authenticated Identification and Key Exchange. In Advances in Cryptology - CRYPTO 2010, pages 255-276. LNCS 6223. Springer, August 2010.
Jan Camenisch, Thomas Groß and Dieter Sommer. Enhancing privacy of federated identity management protocols. In Workshop on Privacy in the Electronic Society (WPES) 2006, pages 67-72. ACM Press, November 2006.