Cryptology ePrint Archive: BibTeX Citation of Report 2003/022

@misc{cryptoeprint:2003:022,
    author = {Nicolas T. Courtois and Robert T. Johnson and Pascal Junod and Thomas Pornin and Michael Scott},
    title = {Did Filiol Break AES ?},
    howpublished = {Cryptology ePrint Archive, Report 2003/022},
    year = {2003},
    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.