Cryptology ePrint Archive: BibTeX Citation of Report 2009/476

@misc{cryptoeprint:2009:476,
    author = {Shujun Li, Hassan Jameel Asghar, Josef Pieprzyk, Ahmad-Reza Sadeghi, Roland Schmitz and Huaxiong Wang},
    title = {On the Security of PAS (Predicate-based Authentication Service)},
    howpublished = {Cryptology ePrint Archive, Report 2009/476},
    year = {2009},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.