School of Computer Science Wuhan University Wuhan 430072 China;
School of Computer Science Wuhan University Wuhan 430072 ChinaState Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan 430074 China;
Division of Ocean Engineering Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea;
School of Computer Science Wuhan University Wuhan 430072 China;
School of Information Management Wuhan University Wuhan 430072 China;
Information security; Cloud-based design and manufacture; Co-design; CAD assembly models; Attribute-based encryption;