Cryptology ePrint Archive: BibTeX Citation of Report 2006/013

@misc{cryptoeprint:2006:013,
    author = {Hung-Yu Chien},
    title = {Comments on a Provably Secure Three-Party Password-Based Authenticated Key Exchange Protocol Using Weil Pairings},
    howpublished = {Cryptology ePrint Archive, Report 2006/013},
    year = {2006},
    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.