Method and authentication server for verifying access identity of set-top box

An authentication server for verifying an access identity of a set-top box, comprising:

• a first receiving module, configured to receive a verification request message sent by a set-top box, wherein the verification request message carries first identity cipher text information of the set-top box, software version information of the set-top box, and a user serial number, and a first identity cipher text is generated by the set-top box according to identity information of the set-top box by using a first encryption algorithm;
• a decrypting module, configured to obtain the identity information of the set-top box from the first identity cipher text information according to the user serial number by using a preset first decryption algorithm;
• and
• a checking module, configured to verify the identity information of the set-top box according to the software version information.

A set-top box, comprising:

• a filling module, configured to fill a verification request message in option information of a dynamic host configuration protocol server;
• a first sending module, configured to send the option information;
• a third receiving module, configured to receive an IP address allocated by the dynamic host configuration protocol server to the set-top box after the option information passes verification;
• and
• a fourth sending module, configured to send a service request to a broadcast television network after the set-top box obtains the IP address.