Cryptology ePrint Archive: BibTeX Citation of Report 2005/286

@misc{cryptoeprint:2005:286,
    author = {Daniele Micciancio and Shien Jin Ong and Amit Sahai and Salil Vadhan},
    title = {Concurrent Zero Knowledge without Complexity Assumptions},
    howpublished = {Cryptology ePrint Archive, Report 2005/286},
    year = {2005},
    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.