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Due to the requirements of dynamic and mandatory access control for important information systems in the classified security protecting environment, a dynamic authorization model based on security label and role (SLR-DAM) is proposed. Firstly, element sets and authorization rules are enumerated in a formalized way. Using security label together with label role we defined, MAC is implemented with the...
In order to avoid the abuse of administrative permission in authorization process, the paper proposes a joint administration model. In the model, the concept of joint administrative role is proposed. A joint administrative role is comprised of several administrative roles who are assigned different weights, and regular roles are associated with different thresholds. Using the method, administrative...
The efficient authorization is the precondition of implementing access control. Traditional access control technology which lacks dynamic authorization mechanism focuses on the beforehand authorization process. Based on usage control (UCON) which is new access control technology, this paper proposes a role-based dynamic authorization model. This model extends RBAC by introducing elements of UCON such...
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