Cryptology ePrint Archive: BibTeX Citation of Report 2009/122

@misc{cryptoeprint:2009:122,
    author = {Jean-Luc Beuchat and Jérémie Detrey and Nicolas Estibals and Eiji Okamoto and Francisco Rodríguez-Henríquez},
    title = {Hardware Accelerator for the Tate Pairing in Characteristic Three Based on Karatsuba-Ofman Multipliers},
    howpublished = {Cryptology ePrint Archive, Report 2009/122},
    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.