Cryptology ePrint Archive: BibTeX Citation of Report 2005/003

@misc{cryptoeprint:2005:003,
    author = {Vlastimil Klima},
    title = {Cryptanalysis of Hiji-bij-bij (HBB)},
    howpublished = {Cryptology ePrint Archive, Report 2005/003},
    year = {2005},
    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.