Cryptology ePrint Archive: BibTeX Citation of Report 2006/418

@misc{cryptoeprint:2006:418,
    author = {Jae Hong Seo, HyoJin Yoon, Seongan Lim, Jung Hee Cheon and Dowon Hong},
    title = {Analysis of Privacy-Preserving Element Reduction of Multiset},
    howpublished = {Cryptology ePrint Archive, Report 2006/418},
    year = {2006},
    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.