Cryptology ePrint Archive: BibTeX Citation of Report 2013/113

@misc{cryptoeprint:2013:113,
    author = {Nuray At and Jean-Luc Beuchat and Eiji Okamoto and Ismail San and Teppei Yamazaki},
    title = {Compact Hardware Implementations of ChaCha, BLAKE, Threefish, and Skein on FPGA},
    howpublished = {Cryptology ePrint Archive, Report 2013/113},
    year = {2013},
    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.