Cryptology ePrint Archive: BibTeX Citation of Report 2015/349

@misc{cryptoeprint:2015:349,
    author = {Chang Liu and Liehuang Zhu and Jinjun Chen},
    title = {Efficient Searchable Symmetric Encryption for Storing Multiple Source Data on Cloud},
    howpublished = {Cryptology ePrint Archive, Report 2015/349},
    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.