Cryptology ePrint Archive: BibTeX Citation of Report 2010/646

@misc{cryptoeprint:2010:646,
    author = {Emmanuel Prouff and Matthieu Rivain and Régis Bévan},
    title = {Statistical Analysis of Second Order Differential Power Analysis},
    howpublished = {Cryptology ePrint Archive, Report 2010/646},
    year = {2010},
    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.