Cryptology ePrint Archive: BibTeX Citation of Report 2013/031

@misc{cryptoeprint:2013:031,
    author = {Christina Brzuska and Nigel P. Smart and Bogdan Warinschi and Gaven J. Watson},
    title = {An Analysis of the EMV Channel Establishment Protocol},
    howpublished = {Cryptology ePrint Archive, Report 2013/031},
    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.