Cryptology ePrint Archive: BibTeX Citation of Report 2015/064

@misc{cryptoeprint:2015:064,
    author = {Handan Kılınç and Alptekin Küpçü},
    title = {Optimally Efficient Multi-Party Fair Exchange and Fair Secure Multi-Party Computation},
    howpublished = {Cryptology ePrint Archive, Report 2015/064},
    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.