Cryptology ePrint Archive: BibTeX Citation of Report 2009/356

@misc{cryptoeprint:2009:356,
    author = {Jean-Sebastien Coron and  Yevgeniy Dodis and Avradip Mandal and Yannick Seurin},
    title = {A Domain Extender for the Ideal Cipher},
    howpublished = {Cryptology ePrint Archive, Report 2009/356},
    year = {2009},
    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.