[Gao, Yansong; Fu, Anmin; Yao, Jianrong; Yang, Wei] Nanjing Univ Sci & Technol, Sch Comp Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China.
[Pang, Lihui] Univ South China, Sch Elect Engn, Hengyang 421009, Hunan, Peoples R China.
[Pang, Lihui] Sungkyunkwan Univ, Secur Engn Lab, Seoul 16419, South Korea.
[Su, Yang] Univ Adelaide, Sch Comp Sci, Adelaide, SA 5005, Australia.
[Zhang, Zhi] CSIRO, Data61, Sydney, NSW 2052, Australia.