Cryptology ePrint Archive: BibTeX Citation of Report 2007/222

@misc{cryptoeprint:2007:222,
    author = {Francois-Xavier Standaert and Eric Peeters and Cedric Archambeau and Jean-Jacques Quisquater},
    title = {Towards Security Limits in Side-Channel Attacks},
    howpublished = {Cryptology ePrint Archive, Report 2007/222},
    year = {2007},
    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.