Cryptology ePrint Archive: BibTeX Citation of Report 2012/198

@misc{cryptoeprint:2012:198,
    author = {Jae Hong Seo and Jung Hee Cheon},
    title = {Beyond the Limitation of Prime-Order Bilinear Groups, and Round Optimal Blind Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2012/198},
    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.