Cryptology ePrint Archive: BibTeX Citation of Report 2009/485

@misc{cryptoeprint:2009:485,
    author = {Zvika Brakerski and Shafi Goldwasser and Yael Kalai},
    title = {Black-Box Circular-Secure Encryption Beyond Affine Functions},
    howpublished = {Cryptology ePrint Archive, Report 2009/485},
    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.