Patent ID: 8745396

Claim:
A method for implementing real time data service, comprising: verifying mobile terminal by Access Point (AP) when the AP of a real time data service system starts to forward data messages of the real time data service to the accessed mobile terminal, and continuing forwarding the data messages of the real time data service to the mobile terminal after the verification is successful; the method further comprising the process of trigging the AP to perform the verification: presetting a preview duration threshold and ensuring that the duration in which forwarding data messages of the real time data service from the AP to the mobile terminal exceeds the preview duration threshold; or, presetting a preview data size threshold and ensuring that the data size of data messages of the real time data service forwarded to the mobile terminal exceeds the preview data size threshold; wherein the method is performed after the mobile terminal accesses the real time data service system by adopting an authentication and key management mode based on re-shared key; the process of verification comprises: the AP sends a signature verification request to the mobile terminal; after receiving the signature verification request, the mobile terminal generates a signature value by using a private key corresponding to a wireless local area network authentication and privacy infrastructure (WAPI) certificate of the mobile terminal, and sends the signature value comprised in a signature verification response to the AP; and the AP decrypts the received signature value by using a public key corresponding to the WAPI certificate contrasts whether the result of the AP decrypting the received signature value and data to be signed are consistent, and determines that the verification is successful when the contrast result is that the decrypted value and the data to be signed are consistent.