| Summary: | Security has always been the top issue against the cloud computing, scientific security architecture is the foundation of other security technologies. Comparing existed cloud computing security architectures and traditional security architectures, there are some common ground and new problems. In cloud computing environment, different users need different security requirements, so if we can assign them reasonable authority, there will be great efficiency improvement for data security and system efficiency. Role is an authority division and management method, it gains very good effect for its classification to user and data operations. Inspired by this, a security cloud computing architecture based on role has been designed, the security of the architecture has been evaluated at last.
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