Role-based cascaded delegation

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 of role-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 rolebased delegation chain is captured by one short signature of constant size. This implementation also provides strong privacy protection for delegation participants. Categories and Subject Descriptors D.4.6 [Operating System]: Security and Protection—Access Controls; K.6.5 [Management of Computing and Information Systems]: Security and Protection—Authentication General Terms Security Keywords Access Control, RBAC, Delegation, Trust Management

• Type: Conference
• Year: 2004
• Where: SACMAT
• Authors: Roberto Tamassia, Danfeng Yao, William H. Winsborough
• Keywords: Delegation Combines, Role-based Cascaded Delegation, SACMAT 2004, Trust Management