Cryptology ePrint Archive: BibTeX Citation of Report 2004/082

@misc{cryptoeprint:2004:082,
    author = {Michael Backes and Birgit Pfitzmann and Michael Waidner},
    title = {The Reactive Simulatability (RSIM) Framework for Asynchronous Systems},
    howpublished = {Cryptology ePrint Archive, Report 2004/082},
    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.