Cryptology ePrint Archive: BibTeX Citation of Report 2012/393

@misc{cryptoeprint:2012:393,
    author = {Mohammad Sabzinejad Farash and Mahmoud Ahmadian Attari  and Majid Bayat },
    title = {A Certificateless Multiple-key Agreement Protocol Based on Bilinear Pairings},
    howpublished = {Cryptology ePrint Archive, Report 2012/393},
    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.