Trust Model in Cloud Computing Environment Based on Fuzzy Theory

Lichuan Gu, Chengji Wang, Youhua Zhang, Jinqin Zhong, Zhiwei Ni


Recent years have witnessed the development of cloud computing. However,
there also come some security concerns in cloud computing environment, such
as emerging network attacks and intrusions, and instable cloud service provision due
to flexible cloud infrastructure and resources. To this end, we research on the trusted
computing in cloud computing environment. Specifically, in this paper, we propose
a trust model based on virtual machines, with two considerations. First, we introduce
timeliness strategy to ensure the response time and also minimize the idle time
of servers. Second, we extend the linear trust chain by differentiating the trust of
the platform domain and user domain. Besides, we develop a fuzzy theory based
method to calculate the trust value of cloud service providers. We also conduct some
experiments to evaluate our method.


Trust model, fuzzy theory, cloud computing

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