Cryptology ePrint Archive: BibTeX Citation of Report 1997/014

@misc{cryptoeprint:1997:014,
    author = {Eli Biham, Dan Boneh and Omer Reingold},
    title = {Generalized Diffie-Hellman Modulo a Composite is not Weaker than Factoring},
    howpublished = {Cryptology ePrint Archive, Report 1997/014},
    year = {1997},
    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.