Cryptology ePrint Archive: BibTeX Citation of Report 2006/227

@misc{cryptoeprint:2006:227,
    author = {L. Batina and J. Guajardo and T. Kerins and N. Mentens and P. Tuyls and I. Verbauwhede},
    title = {An Elliptic Curve Processor Suitable For RFID-Tags},
    howpublished = {Cryptology ePrint Archive, Report 2006/227},
    year = {2006},
    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.