Cryptology ePrint Archive: BibTeX Citation of Report 2006/446

@misc{cryptoeprint:2006:446,
    author = {Shengbao Wang and Zhenfu Cao and Kim-Kwang Raymond Choo},
    title = {New Identity-Based Authenticated Key Agreement Protocols from Pairings (without Random Oracles)},
    howpublished = {Cryptology ePrint Archive, Report 2006/446},
    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.