面向社交媒体大数据隐私保护和安全共享的隐私计算理论与技术研究

随着移动通信技术的快速发展及智能终端软硬件的持续升级换代，全球电子商务、移动社交媒体平台、便民服务应用等移动互联网服务深入普及应用，并产生了海量的社交媒体数据，移动社交媒体大数据呈现“多样关联”、“多模异构”、“多域流转”等特点，传统的数据隐私保护机制及管控方式不再适应于移动社交媒体数据。为满足移动社交媒体大数据的应用需求，本项目研究移动社交媒体大数据隐私保护及安全共享的基础理论和关键技术，建立面向社交媒体大数据的隐私计算框架。在此基础上研究多维度的隐私信息形式化描述方法、隐私动态度量及保护、社交媒体敏感数据精确交换共享与延伸控制、访问控制策略侵犯的取证与追溯等机制，提出细粒度访问控制模型，构建移动社交媒体大数据隐私保护与共享交换安全原型验证系统。本项目对移动社交媒体海量数据安全共享交换控制、用户隐私保护、保证个人/企业和国家的信息安全，实现个人、企业和国家的利益平衡具有重要的意义。

With the rapid development of mobile communication technology and the continuous upgrading of intelligent terminal hardware and software, mobile Internet services such as global e-commerce, mobile social media platforms and convenience service applications have been widely applied and generated a large amount of social media data, mobile social media big data presents the characteristics of “diversity and association”, “multi-mode heterogeneity” and “multi-domain flow”. Traditional data privacy protection mechanisms as well as management and access control methods are no longer suitable for mobile social media data. In order to meet the application needs of mobile social media big data, this project will focus on the basic theories and key technologies of mobile social media big data privacy protection and secure sharing, and establishes a privacy computing framework for social media big data. Furthermore, we will do research on the multi-dimensional formal description method of privacy information, privacy dynamic measurement and protection, accurate exchange and sharing of social media sensitive data and extension control, forensic and traceability of access control policy violation, and a fine-grained access control model will be proposed. Then we will build a mobile social media big data privacy protection and shared exchange security prototype verification system. This project is of great significance to the mobile social media mass data security sharing exchange control, user privacy protection, ensuring personal/enterprise and national information security, and achieving the balance of interests of individuals, enterprises and countries.