Cryptology ePrint Archive: BibTeX Citation of Report 2007/318

@misc{cryptoeprint:2007:318,
    author = {Michael Neve and Kris Tiri},
    title = {On the complexity of side-channel attacks on AES-256 -- methodology and quantitative results on cache attacks},
    howpublished = {Cryptology ePrint Archive, Report 2007/318},
    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.