Cryptology ePrint Archive: BibTeX Citation of Report 2010/091

@misc{cryptoeprint:2010:091,
    author = {Jean-Philippe Aumasson and Emilia Käsper and Lars Ramkilde Knudsen and Krystian Matusiewicz and Rune Odegaard and Thomas Peyrin and Martin Schläffer},
    title = {Distinguishers for the Compression Function and Output Transformation of Hamsi-256},
    howpublished = {Cryptology ePrint Archive, Report 2010/091},
    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.