Cryptology ePrint Archive: BibTeX Citation of Report 2009/533

@misc{cryptoeprint:2009:533,
    author = {D. Boneh and K. Rubin and A. Silverberg},
    title = {Finding composite order ordinary elliptic curves using the Cocks-Pinch method},
    howpublished = {Cryptology ePrint Archive, Report 2009/533},
    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.