1. Hubei Engineering Research Center on Big Data Security, School of Cyber Science and Engineering, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Information Storage, Huazhong University of Science and Technology, Wuhan, China
2. School of Science and Technology, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Information Storage, Huazhong University of Science and Technology, Wuhan, China
3. Hubei Engineering Research Center on Big Data Security, School of Cyber Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
4. NSFOCUS Inc., Wuhan, China
5. Department of Computer Science, Emory University, Atlanta, GA, USA
6. Jack Baskin School of Engineering, University of California, Santa Cruz, CA, USA