AnonyControl: Control Cloud Data Anonymously with Multi-Authority Attribute-Based Encryption
This addresses privacy and security issues for cloud users by enabling anonymous data control, though it is incremental as it builds on existing attribute-based encryption methods.
The paper tackles the privacy problem in cloud computing by proposing AnonyControl, a multi-authority attribute-based encryption scheme that achieves anonymous cloud data access, fine-grained privilege control, and tolerance to up to (N-2) authority compromise, with security and efficiency demonstrated through analysis.
Cloud computing is a revolutionary computing paradigm which enables flexible, on-demand and low-cost usage of computing resources. However, those advantages, ironically, are the causes of security and privacy problems, which emerge because the data owned by different users are stored in some cloud servers instead of under their own control. To deal with security problems, various schemes based on the Attribute- Based Encryption (ABE) have been proposed recently. However, the privacy problem of cloud computing is yet to be solved. This paper presents an anonymous privilege control scheme AnonyControl to address the user and data privacy problem in a cloud. By using multiple authorities in cloud computing system, our proposed scheme achieves anonymous cloud data access, finegrained privilege control, and more importantly, tolerance to up to (N -2) authority compromise. Our security and performance analysis show that AnonyControl is both secure and efficient for cloud computing environment.