Cryptology ePrint Archive: BibTeX Citation of Report 2012/404

@misc{cryptoeprint:2012:404,
    author = {Amos Beimel and Oriol Farràs and Yuval Mintz},
    title = {Secret Sharing Schemes for Very Dense Graphs},
    howpublished = {Cryptology ePrint Archive, Report 2012/404},
    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.