Cryptology ePrint Archive: BibTeX Citation of Report 2004/287

@misc{cryptoeprint:2004:287,
    author = {Duong Quang Viet and Kaoru Kurosawa},
    title = {Almost Ideal Contrast Visual Cryptography with Reversing},
    howpublished = {Cryptology ePrint Archive, Report 2004/287},
    year = {2004},
    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.