Cryptology ePrint Archive: BibTeX Citation of Report 2015/452

@misc{cryptoeprint:2015:452,
    author = {Nicolas Bruneau and Sylvain Guilley and Annelie Heuser and Olivier Rioul},
    title = {Masks will Fall Off -- Higher-Order Optimal Distinguishers},
    howpublished = {Cryptology ePrint Archive, Report 2015/452},
    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.