Cryptology ePrint Archive: BibTeX Citation of Report 2015/633

@misc{cryptoeprint:2015:633,
    author = {Mehmet Sabır Kiraz, İsa Sertkaya, Osmanbey Uzunkol},
    title = {An Efficient ID-Based Message Recoverable Privacy-Preserving Auditing Scheme},
    howpublished = {Cryptology ePrint Archive, Report 2015/633},
    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.