| Affiliation: | 1. School of Mathematics and Statistics, Zaozhuang University, Zaozhuang, 277160, PR China;2. Department of Mathematics, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, PR China;3. State Key Laboratory of Cryptology, P. O. Box 5159, Beijing, 100878, PR China;4. State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing, 100093, PR China;5. Science and Technology on Information Assurance Laboratory, Beijing, 100072, PR China |
