Cryptology ePrint Archive: BibTeX Citation of Report 2009/411

@misc{cryptoeprint:2009:411,
    author = {Vladimir Kolesnikov and Ahmad-Reza Sadeghi and Thomas Schneider},
    title = {Improved Garbled Circuit Building Blocks and Applications to Auctions and Computing Minima},
    howpublished = {Cryptology ePrint Archive, Report 2009/411},
    year = {2009},
    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.