A Role-Based RSA Key Management Approach in a Hierarchy Scheme

The role-based hierarchical key assignment problem is to assign sensitive keys to security role-based classes in a partially ordered hierarchy so that legal data accesses among classes could be enforced according to the role´s privileges. In role-based RSA key hierarchy management scheme, each user is assigned the role which could derive the RSA key corresponding to the assigned role-based class and its successors´ classes in order to access specific contents of resources. In this paper, a role-based RSA key management scheme in a hierarchy scheme is proposed, which both RSA algorithm and Akl approach are combined to the scheme. The scheme provides an easy implement approach and a simple key storage manner to increase the availability of role-based access control scheme. Finally, the security analyses are also presented in this paper.