East China Normal University, Software Engineering Institute, Shanghai Key Laboratory of Trustworthy Computing, Shanghai, China and Universitat Rovira i Virgili, Department of Computer Engineering ...;Nanjing Normal University, School of Computer Science and Technology, China;Universitat Rovira i Virgili, Department of Computer Engineering and Mathematics, UNESCO Chair in Data Privacy, Tarragona, Catalonia, Spain and Xi'an University of Technology, School of Science, D ...;Wuhan University, School of Computer Science, Wuhan, China