Cryptology ePrint Archive: BibTeX Citation of Report 2015/567

@misc{cryptoeprint:2015:567,
    author = {Henri Gilbert and Jérôme Plût and Joana Treger},
    title = {Key-Recovery Attack on the ASASA Cryptosystem with Expanding S-boxes},
    howpublished = {Cryptology ePrint Archive, Report 2015/567},
    year = {2015},
    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.