This application provides an extended authentication method and apparatus for a generic bootstrapping architecture and a storage medium. A first network element obtains a bootstrapping transaction identifier (B-TID) and a key lifetime; and the first network element sends the B-TID and the key lifetime to the terminal, so that the terminal performs extensible authentication protocol (EAP)-based generic bootstrapping architecture (GBA) authentication and key agreement (AKA) authentication with the first network element based on the B-TID and the key lifetime.