This work was supported by National Natural Science Foundation of China(Grant Nos.61602514,61802437,61272488,61202491,61572516,61272041,61772547);National Cryptography Development Fund(Grant No.MMJJ20170125);National Postdoctoral Program for Innovative Talents(Grant No.BX201700153)。
Dear editor,K2 is a secure and high-performance stream cipher and has been standardized by ISO/IEC 18033-4. The MASHA stream cipher is a successor of K2 with integrated MAC functionality proposed in 2011. Based on opt...