@misc{cryptoeprint:2017:449,
    author = {Shihui Fu and Xiutao Feng and Baofeng Wu},
    title = {Differentially 4-Uniform Permutations with the Best Known Nonlinearity from Butterflies},
    howpublished = {Cryptology ePrint Archive, Report 2017/449},
    year = {2017},
    url = {https://eprint.iacr.org/2017/449},
}