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武汉大学学报 英文版 | Wuhan University Journal of Natural Sciences
Wan Fang
Wuhan University
Latest Article
A Cloud Computing Security Model Based on Noninterference
LÜ Congdong1,2, QIAN Gang1, CHEN Tao1
1. School of Information Engineering, Nanjing Audit Univer-sity, Nanjing 211815, Jiangsu, China; 2. People’s Court Judicial Big Data Research Base, Southeast University, Nanjing 211189, Jiangsu, China
In cloud computing, the risk of data leakage exists between users and virtual machines. Whether it is direct or indirect data leakage, it can be regarded as illegal information flow. Methods such as access control models can control the information flow rather than the covert information flow. Therefore, it needs to use the noninterference models to detect the existence of illegal information flow in cloud computing. Typical noninterference models are not suitable to verificate information flow in cloud computing. When concurrent access actions execute in the cloud architecture, security domains do not affect each other, because there is no information flow between security domains. Based on this, we propose noninterference for cloud architecture in which concurrent access and sequential access coexist. When the sequential actions execute, the information flow between security domains can flow in accordance with established rules. When concurrent access actions execute, there should not be the information flow between security domains.
Key words:cloud computing security; information flow security; noninterference; noninterference models
CLC number:TP 305
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