Cryptology ePrint Archive: BibTeX Citation of Report 2013/317

@misc{cryptoeprint:2013:317,
    author = {Michael Z. Lee and Alan M. Dunn and Jonathan Katz and Brent Waters and Emmett Witchel},
    title = {Anon-Pass: Practical Anonymous Subscriptions},
    howpublished = {Cryptology ePrint Archive, Report 2013/317},
    year = {2013},
    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.