关键词: 云计算, 隐私保护, 问责制, 建模

Abstract: Aiming at the core problem of data security in cloud computing privacy security, this paper proposes a 5A accountability mechanism for privacy protection in cloud computing. Based on the 5A mechanism, the service provider’s privacy security policy, tenant privacy requirements, cloud privacy exposure conditions and security scenarios are defined and formalized. On the basis of description logic, this paper focuses on semantic description method of cloud privacy requirements. And based on the definition and formal description of tenant privacy requirements, service provider’s privacy security policy, privacy exposure conditions and cloud security scenarios, it constructs the simulation test model. When testing the privacy modeling on the tool of Protégé, the test results show that privacy modeling follows the character of consistency and integrity.

Key words: cloud computing, privacy-preserving, accountability, modelling