International Association for Cryptologic Research

International Association
for Cryptologic Research


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

Yan Zhu
Gail-Joon Ahn
Hongxin Hu
Huaixi Wang
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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.
  title={Cryptographic Role-based Security Mechanisms based on Role-Key Hierarchy},
  booktitle={IACR Eprint archive},
  keywords={cryptographic protocols / Access Control, Role-based Cryptosystem, Role-Key Hierarchy, Pairing-based Cryptosystem},
  note={AsiaCCS 2010 14789 received 6 Apr 2010, last revised 29 Jun 2010},
  author={Yan Zhu and Gail-Joon Ahn and Hongxin Hu and Huaixi Wang},