Keys Distributing Optimization of CP-ABE Based Access Control in Cryptographic Cloud Storage
Yong Cheng, Jiangchun Ren, Zhiying Wang, Songzhu Mei, Jie Zhou · IEICE Transactions on Information and Systems · 2012
In this letter, we introduce a novel keys distribution optimization scheme for CP-ABE based access control. This scheme integrates roles, role hierarchies and objects grouping to accelerate keys distribution, meanwhile the CP-ABE encrypting overhead is reduced by adopting deterministic cryptographic function. Experiments show that our scheme obtains noticeable improvement over the original one, especially when the number of objects is much greater than that of users.