Cryptology ePrint Archive: BibTeX Citation of Report 2012/252

@misc{cryptoeprint:2012:252,
    author = {Changyu Dong and Liqun Chen and Jan Camenisch and Giovanni Russello},
    title = {Fair Private Set Intersection with a Semi-trusted Arbiter},
    howpublished = {Cryptology ePrint Archive, Report 2012/252},
    year = {2012},
    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.