Cryptology ePrint Archive: BibTeX Citation of Report 2015/158

@misc{cryptoeprint:2015:158,
    author = {Zvika Brakerski and Ilan Komargodski and Gil Segev},
    title = {Multi-Input Functional Encryption in the Private-Key Setting: Stronger Security from Weaker Assumptions},
    howpublished = {Cryptology ePrint Archive, Report 2015/158},
    year = {2015},
    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.