Cryptology ePrint Archive: BibTeX Citation of Report 2012/242

@misc{cryptoeprint:2012:242,
    author = {C. Brzuska and M. Fischlin and N.P. Smart and B. Warinschi and S. Williams},
    title = {Less is More: Relaxed yet Composable Security Notions for Key Exchange},
    howpublished = {Cryptology ePrint Archive, Report 2012/242},
    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.