Cryptology ePrint Archive: BibTeX Citation of Report 2005/457

@misc{cryptoeprint:2005:457,
    author = {Jue-Sam Chou and Chu-Hsing Lin and Chia-Hung Chiu},
    title = {Weakness of shim¡¦s New ID-based tripartite multiple-key agreement protocol},
    howpublished = {Cryptology ePrint Archive, Report 2005/457},
    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.