Cryptology ePrint Archive: BibTeX Citation of Report 2011/520

@misc{cryptoeprint:2011:520,
    author = {Houssem maghebi, Sylvain Guilley, Claude Carlet, Jean-Luc Danger},
    title = {Houssem Maghrebi and Sylvain Guilley and Claude Carlet and Jean-Luc Danger},
    howpublished = {Cryptology ePrint Archive, Report 2011/520},
    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.