1. Jiangsu Collaborative Innovation Center of Atmospheric Environment, the Equipment Technology and the Engineering Research Center of Digital Forensics, Ministry of Education, and the School of Computer Science, Nanjing University of Information Science and Technology, Nanjing, China
2. School of Computer Science, Nanjing University of Information Science and Technology, Nanjing, China
3. Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China
4. School of Information Technology, Halmstad University, Halland, Sweden