Funding for this research was provided by:
The Opening Project of Guangdong Provincial Key Laboratory of Information Security Technology (2017B030314131)
National Natural Science Foundation of China (61802033, 61751110)
Postdoctoral Research Foundation of China (216638)
Article History
Received: 28 May 2018
Accepted: 16 March 2019
First Online: 30 March 2019