College of Mathematics and Computer Science, Fuzhou University, Fuzhou 350116, China;
Key Laboratory of Information Security of Network Systems (Fuzhou University), Fuzhou 350116, China;
College of Mathematics and Computer Science, Fuzhou University, Fuzhou 350116, China;
Key Laboratory of Information Security of Network Systems (Fuzhou University), Fuzhou 350116, China;
College of Mathematics and Computer Science, Fuzhou University, Fuzhou 350116, China;
Key Laboratory of Information Security of Network Systems (Fuzhou University), Fuzhou 350116, China;