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Erschienen in:
2015 | OriginalPaper | Buchkapitel
Secure Cloud Storage for Dynamic Group: How to Achieve Identity Privacy-Preserving and Privilege Control
verfasst von : Hui Ma, Rui Zhang
Erschienen in: Network and System Security
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We propose the first secure cloud storage system with public audit for dynamic group, which achieves identity privacy-preserving and privilege control among mobile users. We utilize multi-key ciphertext policy attribute-based key encapsulation mechanisms (MCP-AB-KEMs) to achieve privileges of operations on the cloud data and the anonymity among the mobile users, and we utilize proxy re-signatures to update tags efficiently. In addition, a third party auditor (TPA) helps to check data integrity without the knowledge of users’ identities. We also give a security model and present the security analysis within the model.