Cryptology ePrint Archive: BibTeX Citation of Report 2015/034

@misc{cryptoeprint:2015:034,
    author = {Hannes Gro{\ss} and Erich Wenger and Christoph Dobraunig and Christoph Ehrenh{\"o}fer},
    title = {Suit up! Made-to-Measure Hardware Implementations of Ascon},
    howpublished = {Cryptology ePrint Archive, Report 2015/034},
    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.