Cryptology ePrint Archive: BibTeX Citation of Report 2012/354

@misc{cryptoeprint:2012:354,
    author = {Arno Mittelbach},
    title = {Hash Combiners for Second Pre-Image Resistance, Target Collision Resistance and Pre-Image Resistance have Long Output},
    howpublished = {Cryptology ePrint Archive, Report 2012/354},
    year = {2012},
    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.