Cryptology ePrint Archive: BibTeX Citation of Report 2012/317

@misc{cryptoeprint:2012:317,
    author = {Markku-Juhani O. Saarinen and Daniel Engels },
    title = {A Do-It-All-Cipher for RFID: Design Requirements (Extended Abstract) },
    howpublished = {Cryptology ePrint Archive, Report 2012/317},
    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.