1. School of Electronic Information and Electrical Engineering, Shanghai Key Laboratory of Integrated Administration Technologies for Information Security, Shanghai Jiao Tong University, Shanghai, China
2. Production and Systems, Graduate School of Information, Waseda University, Fukuoka, Japan
3. Department of Computing and Mathematics, Manchester Metropolitan University, Manchester, U.K.
4. Information Security Research Center, Harbin Engineering University, Harbin, China
5. Department of Computer Science, College of Computers and Information Technology, Taif University, Taif, Saudi Arabia