| Abstract: |
Fog computing is a technology, which benefits from both Cloud Computing and Internet of Things paradigms. Instead of centralizing the information stored in the cloud, the idea in the fog environment is to use devices located at the edge of the network to prevent congestion during data exchanges. Since its development, the fog computing was integrated in numerous applications, including, connected vehicles (v2x), and smart cities, among others. Furthermore, the fog environment is highly variable within the resources as it varies dynamically. Therefore, a careful management of resources is essential for maximizing the efficiency of this distributed environment. That is why, the access control to resources is one of the challenging issues to be taken into account to enhance security in fog environments. In this paper, we develop a novel distributed fog-cloud computing mechanism for access control based on trust and risk estimation. We evaluate the performance of the novel approach through appropriate simulations, which improves system performance by minimizing the time spent to have permissions to access services and optimizing the overall system resource utilization. |