Cryptology ePrint Archive: BibTeX Citation of Report 2011/320

@misc{cryptoeprint:2011:320,
    author = {Manan Nayak and Shashank Agrawal and Kannan Srinathan},
    title = {Minimal Connectivity for Unconditionally Secure Message Transmission in Synchronous Directed Networks},
    howpublished = {Cryptology ePrint Archive, Report 2011/320},
    year = {2011},
    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.