Cryptology ePrint Archive: BibTeX Citation of Report 2013/555

@misc{cryptoeprint:2013:555,
    author = {Ueli Maurer and Björn Tackmann and Sandro Coretti},
    title = {Key Exchange with Unilateral Authentication: Composable Security Definition and Modular Protocol Design},
    howpublished = {Cryptology ePrint Archive, Report 2013/555},
    year = {2013},
    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.