Cryptology ePrint Archive: BibTeX Citation of Report 2005/270

@misc{cryptoeprint:2005:270,
    author = {Kim-Kwang Raymond Choo and Colin Boyd and Yvonne Hitchcock},
    title = {Examining Indistinguishability-Based Proof Models for Key Establishment Protocols},
    howpublished = {Cryptology ePrint Archive, Report 2005/270},
    year = {2005},
    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.