A 5G terminal authentication method considering end-to-end electrical service security protection

With the construction of a new power system, the demand for interaction and collaborative control between the power grid, power supply and users continues to rise. In order to realize the access of massive power business terminals by utilizing the large 5G connection capacity, it is necessary to ensure the high reliability and security of communication. Aiming at the security access problems such as lack of effective means of identity protection for power service terminals, identity mutual trust existing in 5G communication terminals’ southbound connection to business terminals, and weak anti-replay attack caused by open transmission of wireless channels, this paper proposes an authentication method for power 5G terminals that includes end-to-end security protection of services. Based on the existing 5G AKA authentication, this method proposes the generation mechanism of business terminal identity security, and uses the customized secondary authentication architecture defined by 5G to realize the cross-layer terminal identity trusted authentication of business domain and network domain. Through the security analysis of the authentication method disclosed in the invention, it is proved that the method can resist key attack means such as identity theft, replay and pseudo-base station of the business terminal, and realize the security protection of the whole process of 5G access authentication interaction of the power business terminal.