@misc{cryptoeprint:2016:1137,
    author = {HoChang Lee, HyungChul Kang, Deukjo Hong, Jaechul Sung, Seokhie Hong},
    title = {New Impossible Differential Characteristic of SPECK64 using MILP},
    howpublished = {Cryptology ePrint Archive, Report 2016/1137},
    year = {2016},
    url = {https://eprint.iacr.org/2016/1137},
}