Cryptology ePrint Archive: BibTeX Citation of Report 2002/122

@misc{cryptoeprint:2002:122,
    author = {Fangguo Zhang, Shengli Liu and Kwangjo Kim},
    title = {ID-Based One Round Authenticated Tripartite  Key Agreement Protocol with Pairings},
    howpublished = {Cryptology ePrint Archive, Report 2002/122},
    year = {2002},
    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.