1. Department of Mathematics; Chaudhary Charan Singh University; Meerut 250 005 Uttar Pradesh India
2. Center for Security, Theory and Algorithmic Research; International Institute of Information Technology; Hyderabad 500 032 India
3. School of Computer Science and Engineering; Hunan University of Science and Technology; Xiangtan 411 201 China
4. Nanjing University of Information Science and Technology; Nanjing 210044 China
5. Department of Computer Science and Engineering; Xiamen Institute of Technology; Xiamen 361021 China
6. Department of Information Systems and Cyber Security; The University of Texas at San Antonio; San Antonio 78249 TX USA
7. School of Computer Science; China University of Geosciences; Wuhan China
8. School of Information Technology & Mathematical Sciences; University of South Australia; Adelaide SA Australia
9. Center of Excellence in Information Assurance; King Saud University; Riyadh Saudi Arabia