Cryptology ePrint Archive: BibTeX Citation of Report 2007/404

@misc{cryptoeprint:2007:404,
    author = {Jonathan Katz and Amit Sahai and Brent Waters},
    title = {Predicate Encryption Supporting Disjunctions, Polynomial Equations, and Inner Products},
    howpublished = {Cryptology ePrint Archive, Report 2007/404},
    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.