Access Control Method Based on a Mutual Trust Mechanism in the Edge Computing Environment

Abstract

The problem of mutual trust between users and edge nodes in an edge computing environment is a sufficient guarantee for the double security of edge computing service users and service providers. How to achieve the user's security and credibility and ensure the trust of the edge service nodes is a serious challenge facing the security of edge computing. In this paper, based on the user behavior trust model and the edge service node trust evaluation model, the concept of mutual trust in edge computing is defined, the mutual trust mechanism and the mutual trust model are designed, and on this basis, the access control model EUSMTM based on mutual trust is proposed. (Edge Users and Edge Servers Mutual Trust Model), the EUSMTM is described in detail in terms of model definition, framework structure, algorithm flow and authorization decision mechanism. The EUSMTM model closely integrates trust management with the RBAC (Role-Based Access Control) model. Aiming at the multi-domain characteristics of the edge computing environment, The EUSMTM model implements intra-domain access control and cross-domain access control strategies based on mutual trust, and it implements the improvement and expansion of the RBAC model in the edge computing environment. By comparing and analyzing the performance of EUSMTM through a simulated environment, the validity of the trust model between the user and the edge server is verified; Through the comparative experiment of two-way trust and one-way trust between the edge user and the edge server, the relative advantages of access control based on two-way trust in the EUSMTM model are analyzed.