Affiliation: | a School of Computer Science and Technology, Nanjing Normal University, PR China b Jiangsu Engineering Research Center on Information Security and Privacy Protection Technology, Nanjing, PR China c School of Information Systems, Singapore Management University, Singapore d Center for Computer and Information Security Research, School of Computer Science and Software Engineering, University of Wollongong, Australia e UNESCO Chair in Data Privacy, Department of Computer Engineering and Mathematics, Universitat Rovira i Virgili, Catalonia, Spain |