A Reputation Framework to Share Resources into IoT-based Environments

Internet of Things (IoT) is an emerging paradigm for cooperation among physical objects provided with computational and communication capabilities. The great amount of interactions occurring within the IoT environments expose IoT users and interconnected objects to security and privacy risks. Consequently, adding security and privacy into the IoT domain is fundamental for a wider IoT diffusion. In open and dynamic IoT environments such problems are more relevant for the greater possibility of anomalous behaviors and the adoption of approaches uniquely based on authentication methods could result infeasible and/or inadequate for creating an effective trustworthiness atmosphere. A possible solution, widely applied and investigated in different fields, is represented by trust-and reputation-based systems. To tackle the issues above we conceived a distributed reputation model along with a framework to manage information about IoT devices reputation. In particular, the model provides some countermeasures to detect malicious or cheating devices. To test the performance of our proposal, a set of experiments simulating the vehicular mobility on a basic urban network has been executed by providing promising results.