Cryptology ePrint Archive: BibTeX Citation of Report 2011/404

@misc{cryptoeprint:2011:404,
    author = {Seiko Arita},
    title = {A constant-round resettably-sound resettable zero-knowledge argument in the BPK model},
    howpublished = {Cryptology ePrint Archive, Report 2011/404},
    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.