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   Vol.E95-D   No.12   pp.3088-3091
Publication Date: 2012/12/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E95.D.3088
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Data Engineering, Web Information Systems
keys distribution,  access control,  cryptographic cloud storage,  

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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.