Funding for this research was provided by:
the National Natural Science Foundation of Shanxi (201601D021014)
Secretaría de Educación Superior, Ciencia, Tecnología e Innovación (2019L0860)
Natural Science Foundation of Guangdong Province (2018A030310071)
the Subject Research Projects Foundation of Key Laboratory of Information Security Technology of Guangdong (GDXXAQ2016-05)
Article History
Received: 11 February 2020
Accepted: 2 May 2020
First Online: 18 May 2020