| 摘要 |
The invention provides a method for verifying the subscriber's validity, making the most of TID as the bridge of credit relation between the NAF and the subscriber. BSF distributes the period of validity to the TID, increasing the function of the TID, which makes the NAF could check the period of validity of the TID applied by the subscriber, then could further verify the subscriber's validity. The application of the invention could avoid that a single TID is validity to a NAF forever, increase the system security, reduce the danger of subscriber's TID and relevant cipher theft, furthermore fulfill the NAF's management to the TID. In addition, the invention could combine with the billing system to easily carry out the billing function for the subscriber. |
