1. Computer School, Central China Normal University, Wuhan, China
2. Hubei Provincial Key Laboratory of Artificial Intelligence and Smart Learning, Central China Normal University, Wuhan, China
3. Department of Computer Science Electrical Engineering, University of Missouri, Kansas City, MO, USA
4. Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, China
5. Key Laboratory of Aerospace Information Securitand Trusted Computing, School of Cyber Science and Engineering, Ministry of Education, Wuhan University, Wuhan, China