| 摘要 |
A method in wireless communications devices including generating a lower layer cipher key from a lower layer access key stored on the wireless communications device, for example, on a smart card, and then generating a higher layer authentication key ( 210 ) from the lower layer cipher key ( 230 ). The higher layer authentication key is also generated at a network entity and delivered to an authentication and authorization server. An application server authenticates subscriber device service requests with the authentication and authorization server using the higher layer authentication key. |
