Research on Access Channel Control of Electric Power Marketing Service System Based on Multi Factor Identity Authentication Protocol

With the development of information technology, the security and reliability of power marketing service systems have become increasingly important. This article proposes an identity authentication protocol based on multi factor features to enhance the security level of access channel control in power marketing service systems. This protocol combines traditional password authentication with modern mobile SMS verification code authentication, while considering the possible introduction of biometric authentication in the future, thus forming a multi-layer protection system. This study first defines the main participants of the power marketing service system, including users, authentication servers, SMS gateways, and the power marketing service system itself. On this basis, a multi factor authentication process was designed to ensure that only rigorously verified users can access sensitive functions and services in the power marketing service system. In order to verify the security and effectiveness of the proposed protocol, this paper adopts BAN logic for formal security verification. Through reasoning rules, it has been proven that the protocol can resist common security threats in practical applications, such as man in the middle attacks and replay attacks. In addition, this article proposes an access channel control algorithm that dynamically adjusts user access permissions based on authentication results to ensure secure access to system resources. Finally, the feasibility and stability of the scheme in practical deployment were verified through unit testing, integration testing, and stress testing of the authentication protocol and access control algorithm. The research results indicate that the proposed identity authentication protocol based on multi factor features can significantly improve the security of the power marketing service system and provide flexible expansion space for future system upgrades.