Cryptology ePrint Archive: BibTeX Citation of Report 2010/080

@misc{cryptoeprint:2010:080,
    author = {Gergei Bana and Koji Hasebe and Mitsuhiro Okada},
    title = {Secrecy-Oriented First-Order Logical Analysis of Cryptographic Protocols},
    howpublished = {Cryptology ePrint Archive, Report 2010/080},
    year = {2010},
    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.