Cryptology ePrint Archive: BibTeX Citation of Report 2010/291

@misc{cryptoeprint:2010:291,
    author = {He Debiao, Chen Jianhua, Hu Jin},
    title = {Cryptanalysis of an Exquisite Mutual Authentication Scheme with Key Agreement Using Smart Card},
    howpublished = {Cryptology ePrint Archive, Report 2010/291},
    year = {2010},
    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.