Cryptology ePrint Archive: BibTeX Citation of Report 2008/217

@misc{cryptoeprint:2008:217,
    author = {Antoine Joux and Reynald Lercier and David Naccache and Emmanuel Thom\'e},
    title = {Oracle-Assisted Static Diffie-Hellman Is Easier Than Discrete Logarithms},
    howpublished = {Cryptology ePrint Archive, Report 2008/217},
    year = {2008},
    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.