Cryptology ePrint Archive: BibTeX Citation of Report 2011/658

@misc{cryptoeprint:2011:658,
    author = {D. Bernhard and G. Fuchsbauer and E. Ghadafi and N.P. Smart and B. Warinschi},
    title = {Anonymous attestation with user-controlled linkability},
    howpublished = {Cryptology ePrint Archive, Report 2011/658},
    year = {2011},
    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.