Daniel V. Bailey, Dan Boneh, Eu-Jin Goh, Ari Juels. Covert channels in privacy-preserving identification systems. In Peng Ning, Sabrina De Capitani di Vimercati, Paul F. Syverson, editors, Proceedings of the 2007 ACM Conference on Computer and Communications Security, CCS 2007, Alexandria, Virginia, USA, October 28-31, 2007. pages 297-306, ACM, 2007. [doi]
Abstract is missing.