Cryptology ePrint Archive: BibTeX Citation of Report 2007/142

@misc{cryptoeprint:2007:142,
    author = {Meng-Hui Lim and Sanggon Lee and Youngho Park and Hoonjae Lee},
    title = {An Enhanced One-round Pairing-based Tripartite Authenticated Key Agreement Protocol},
    howpublished = {Cryptology ePrint Archive, Report 2007/142},
    year = {2007},
    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.