Cryptology ePrint Archive: BibTeX Citation of Report 2011/409

@misc{cryptoeprint:2011:409,
    author = {Xiaoyuan Yang, Weiyi Cai, Xu An Wang},
    title = {Efficient Predicate Encryption Supporting Construction of Fine-Grained Searchable Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2011/409},
    year = {2011},
    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.