Cryptology ePrint Archive: BibTeX Citation of Report 2008/411

@misc{cryptoeprint:2008:411,
    author = {Bo Zhu, Yanfei Zheng, Yaowei Zhou and Kefei Chen},
    title = {Cryptanalysis of LU Decomposition-based Key Pre-distribution Scheme for Wireless Sensor Networks},
    howpublished = {Cryptology ePrint Archive, Report 2008/411},
    year = {2008},
    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.