Research and Application of Grid Cloud Service Security Access Control Technology Based on Zero Trust Model

The security access control technology for grid cloud services based on the zero trust model is an emerging method for implementing security access control in grid cloud environments. This article explores the design and implementation of this technology through research and application. Firstly, this article introduces the basic principles and characteristics of the zero trust model. This model no longer assumes the credibility of any internal or external resources, but implements access control of resources through multiple authentication, permission grading, and dynamic policies. Then, this article proposes an access control framework based on the zero trust model to address security challenges in grid cloud environments, and provides a detailed description of the functions and roles of each component. In the implementation process, this article uses technical means based on identity verification, authentication tokens, and access policies, combined with the characteristics of the grid cloud environment, to design a secure access control system. This system achieves authentication of users and resources, dynamic updates of hierarchical authorization and access control rules, thereby ensuring the security and credibility of grid cloud services. The experimental results indicate that the security access control system effectively prevents unauthorized access and potential security risks in grid cloud environments. Through the application of multiple authentication and dynamic access control policies, the system can timely identify and respond to security threats, and achieve fine-grained access control for cloud services..