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With the rapid development of versatile cloud services, it becomes increasingly susceptible to use cloud services to share data in a friend circle in the cloud computing environment. Since it is not feasible to implement full lifecycle privacy security, access control becomes a challenging task, especially when we share sensitive data on cloud servers. In order to tackle this problem, we propose a...
Structured document plays a vital role in the information carrier for realizing information exchange and dissemination in cloud computing. However, there is no prior work on discussing structured document model which is appropriate for describing the special "live" characteristics of the structured document in cloud. In this paper, we leverage the multilevel security to present a new structured...
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