COMMUNICATION METHOD AND COMMUNICATION APPARATUS

原文（中国語）

This application provides a communication method and a communication apparatus. The method includes: An authentication server function receives an authentication request message of a terminal device, where the authentication request message includes a subscription concealed identifier of the terminal device. The authentication server function sends a first request message to a unified data management function based on the authentication request message, where the first request message is used to obtain a subscription permanent identifier of the terminal device, and the first request message carries a certificate of the UE or carries information in the certificate of the UE. The authentication server function receives a response message from the unified data management function, where the response message includes the subscription permanent identifier corresponding to the information in the certificate of the terminal device. The authentication server function determines a security anchor function key based on the subscription permanent identifier.