Proposal of the Objective Function of Trust for the Dynamic Delegation and Automatic Revocation of Roles

The question of delegation of roles based on trust level remains ambiguous because, according to the literature, the selection criteria to validate the trust level of are still subjective. In addition, the revocation has limitations because it is not automatically define. In this paper, we propose an improvement of RDBDAC model. The proposed model manage the dynamic delegation of roles, by evaluating the criteria for defining trust level. In addition, we improve the system of automatic revocation of role delegation based on exceptions. We use non-monotonic logic T-JCLASSIC\(\delta \epsilon \) to perform an axiomatic interpretation of the model. We use UML for the analysis of the system. We implement the model on an e-learning platform. We use WebRTC and Node.js to facilitate real time communication. Our model improves the notion of trust, and implement objective function. It provides an efficient, reliable, easy-to-use and stable platform. The implemented system improves collaborative work.