Cryptology ePrint Archive: BibTeX Citation of Report 2007/060

@misc{cryptoeprint:2007:060,
    author = {Yonatan Aumann and Yehuda Lindell},
    title = {Security Against Covert Adversaries: Efficient Protocols for Realistic Adversaries},
    howpublished = {Cryptology ePrint Archive, Report 2007/060},
    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.