Cryptology ePrint Archive: BibTeX Citation of Report 2014/462

@misc{cryptoeprint:2014:462,
    author = {Constantin Catalin Dragan and Ferucio Laurentiu Tiplea},
    title = {Efficient Key-policy Attribute-based Encryption for General Boolean Circuits from Multilinear Maps},
    howpublished = {Cryptology ePrint Archive, Report 2014/462},
    year = {2014},
    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.