Cryptology ePrint Archive: BibTeX Citation of Report 2007/180

@misc{cryptoeprint:2007:180,
    author = {*Jue-Sam Chou 1, Yalin Chen 2, Tsung-Heng Chen 3},
    title = {A Novel Secure Session Key Generation using two-level architecture For Cluster-Based Ad Hoc Networks Based On ID-Based Bilinear Paring},
    howpublished = {Cryptology ePrint Archive, Report 2007/180},
    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.