Role-based cascaded delegation

  • Authors:
  • Roberto Tamassia;Danfeng Yao;William H. Winsborough

  • Affiliations:
  • Brown University, Providence, RI;Brown University, Providence, RI;George Mason University, Fairfax, VA

  • Venue:
  • Proceedings of the ninth ACM symposium on Access control models and technologies
  • Year:
  • 2004

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Abstract

We propose role-based cascaded delegation, a model for delegation of authority in decentralized trust management systems. We show that role-based cascaded delegation combines the advantages ofrole-based trust management with those of cascaded delegation. We also present an efficient and scalable implementation of role-based cascaded delegation using Hierarchical Certificate-Based Encryption, where the authentication information for an arbitrarily long role-based delegation chain is captured by one short signature of constant size. This implementation also provides strong privacy protection for delegation participants.