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| reducing the amount of data need to be transferred, stored, and managed becomes a crucial for cloud storage. On the other hand, as user data are stored and processed by outsourced cloud provider, encryption becomes a necessary before updating data into the cloud. However, the above two goals are greatly opposed to each other. In order to solve the above conflict, a policy-based de-duplication proxy scheme is proposed in this paper. It suggests a policy-based de-duplication proxy scheme to enable different trust relations among cloud storage components, de-duplication related components and different security requirements. Further proposes a key management mechanism to access and decrypt the shared de-duplicated data chunks based on Proxy Re-encryption algorithms. This paper finally analyses the security of the scheme. |
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| Keywords:Cloud Storage; Encryption; Data De-duplication; Proxy Re-encryption; Convergent Encryption |
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