Cryptology ePrint Archive: BibTeX Citation of Report 2007/294

@misc{cryptoeprint:2007:294,
    author = {Julien Bringer and Herve Chabanne and Thomas Icart},
    title = {Improved Privacy of the Tree-Based Hash protocols using Physically Unclonable Function},
    howpublished = {Cryptology ePrint Archive, Report 2007/294},
    year = {2007},
    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.