Cryptology ePrint Archive: BibTeX Citation of Report 2012/028

@misc{cryptoeprint:2012:028,
    author = {Houssem MAGHREBI and Emmanuel PROUFF and Sylvain GUILLEY  and Jean-Luc DANGER},
    title = {A First-Order Leak-Free Masking Countermeasure},
    howpublished = {Cryptology ePrint Archive, Report 2012/028},
    year = {2012},
    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.