Security evaluation method, service processing method, security information transmission method, and related device

A service processing method, wherein the method comprises:

• sending, by an application server, a security evaluation request to an electronic device, wherein the security evaluation request is used to request to evaluate security of the electronic device;
• receiving, by the application server, second security information from the electronic device, wherein the second security information comprises a target security evaluation result, a signature of the target security evaluation result, and first digital certificate information, the target security evaluation result is used to indicate security of a rich execution environment (REE) of the electronic device, the first digital certificate information comprises a digital certificate of the electronic device or an identifier of the digital certificate of the electronic device, and the digital certificate of the electronic device is obtained by signing a public key of the electronic device by using a private key of a management server;
• and
• determining, by the application server based on the second security information, that the electronic device is allowed to access a target service or that the electronic device is not allowed to access the target service, wherein the target service is a service provided by the application server for the electronic device.