Cryptology ePrint Archive: BibTeX Citation of Report 2009/229

@misc{cryptoeprint:2009:229,
    author = {Giacomo de Meulenaer and Christophe Petit and Jean-Jacques Quisquater},
    title = {Hardware Implementations of a Variant of the Zémor-Tillich Hash Function: Can a Provably Secure Hash Function be very efficient ?},
    howpublished = {Cryptology ePrint Archive, Report 2009/229},
    year = {2009},
    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.