| 摘要 |
Disclosed is a method for message protection, comprising: a UE receiving an authentication and key negotiation request message sent by an SGSN via a GMM/SM protocol layer of the UE; the UE acquiring, on the GMM/SM protocol layer of the UE, first algorithm identification according to the authentication and key negotiation request message, and generating a first key; the UE verifying a first message verification code on the GMM/SM protocol layer of the UE according to the first key and a first algorithm; if the UE determines that the first message verification code passes the verification, generating an authentication and key negotiation response message on the GMM/SM protocol layer of the UE according to the first key and the first algorithm; and the UE sending the authentication and key negotiation response message to the SGSN via the GMM/SM protocol layer of the UE, such that the SGSN verifies a second verification code. The embodiments of the present invention further provide a relevant device and system for message protection. Support may be obtained in practical applications, thereby improving the security of the solution, and preventing a quality degradation attack of an attacker. |
