Cryptology ePrint Archive: BibTeX Citation of Report 2012/702

@misc{cryptoeprint:2012:702,
    author = {Nasour Bagheri, Masoumeh Safkhani, Pedro Peris-Lopez, Juan E. Tapiador},
    title = {Cryptanalysis of RAPP, an RFID Authentication Protocol},
    howpublished = {Cryptology ePrint Archive, Report 2012/702},
    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.