Cryptology ePrint Archive: BibTeX Citation of Report 2012/394

@misc{cryptoeprint:2012:394,
    author = {Mohammad Sabzinejad Farash and Mahmoud Ahmadian Attari},
    title = {An ID-Based Key Agreement Protocol Based on ECC Among Users of Separate Networks},
    howpublished = {Cryptology ePrint Archive, Report 2012/394},
    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.