Cryptology ePrint Archive: BibTeX Citation of Report 2012/068

@misc{cryptoeprint:2012:068,
    author = {Sidi Mohamed El Yousfi Alaoui, Özgür Dagdelen, Pascal Véron,  David Galindo, and Pierre-Louis Cayrel},
    title = {Extended Security Arguments for (Ring) Signature Schemes},
    howpublished = {Cryptology ePrint Archive, Report 2012/068},
    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.