Data Sharing for Dynamic Groups in the Cloud

Provided by: Institute of Research and Journals (IRAJ)
Topic: Security
Format: PDF
A new CP-ABE method for a data sharing system by exploits the attribute of the system preparation. The proposed method features the following achievements: the key escrow problem could be solve by escrow-free key issuing protocol, which is construct using the secure two-party computation between the key making center and the data-storing center, and fine-grained user revocation per each attribute could be done by proxy encryption which takes advantage of the choosy quality group key sharing on top of the ABE. The presentation and security analyses point to that the proposed scheme is capable to securely manage the data spread in the data allocation system.

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