Abstract
A secure delegation has a key role in collaborative and dynamic systems, and it brings new challenges to security mechanisms. Secure delegation requires a flexible model that eliminates the challenges of access control and usage control services and provides separation of duty for static and dynamic circumstances. In this study, we propose a security service model that provides delegation of rights by restricting the delegation of sensitive permission as well as restriction from unauthorized access to resources. It also ensures that the delegation process hides information and privacy from competitors in an effective manner. The proposed model removes the administrative burden and establishes an automated delegation system. In addition, the model focuses on privacy and divides the duties with the fewest possible procedures. Moreover, exercising the model’s effectiveness with various circumstances and types of delegates has also been demonstrated.