Cryptology ePrint Archive: Report 2010/188

Cryptographic Role-based Security Mechanisms based on Role-Key Hierarchy

Yan Zhu and Gail-Joon Ahn and Hongxin Hu and Huaixi Wang

Abstract: Even though role-based access control (RBAC) can tremendously help us minimize the complexity in administering users, it is still needed to realize the notion of roles at the resource level. In this paper, we propose a practical cryptographic RBAC model, called role-key hierarchy model, to support various security features including signature, identification and encryption based on role-key hierarchy. With the help of rich algebraic structure of elliptic curve, we introduce a role-based cryptosystem construction to verify the rationality and validity of our proposed model. Also, a proof-of-concept prototype implementation and performance evaluation are iscussed to demonstrate the feasibility and efficiency of our mechanisms.

Category / Keywords: cryptographic protocols / Access Control, Role-based Cryptosystem, Role-Key Hierarchy, Pairing-based Cryptosystem

Publication Info: AsiaCCS 2010

Date: received 6 Apr 2010, last revised 29 Jun 2010

Contact author: wanghuaixi at gmail com

Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation

Note: In this version, we give a more complete proof in the appendix for the theorems in this paper.

Version: 20100629:142036 (All versions of this report)

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