Cryptology ePrint Archive: BibTeX Citation of Report 2008/173

@misc{cryptoeprint:2008:173,
    author = {Christophe Petit and Kristin Lauter and Jean-Jacques Quisquater},
    title = {Full Cryptanalysis of LPS and Morgenstern Hash Function},
    howpublished = {Cryptology ePrint Archive, Report 2008/173},
    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.