Method and user device for sending user identity authentication information

Abstract

The invention discloses a method and a user device for sending user identity authentication information, a method for confirming a home location register and a visitor location register, and a method for confirming a user legal identity and the home location register. The method for sending the user identity authentication information includes steps: receiving a user identity information request sent by the visitor location register; generating a random serial number according to the user identity information request; using a first secret key stored in the user device to encrypt a serial number formed by connecting the random serial number and an IMSI (international mobile subscriber identification number) in series, and then obtaining an encrypted serial number; returning the user identity authentication information including first information obtained according to the IMSI, second information obtained according to MSISDN, the random serial number and the encrypted serial number to the visitor location register. In exceptional circumstances, the user identity authentication information returned when the user device responds to the user identity information request does not include the IMSI, and therefore risk caused by direct plaintext transmission of the IMSI is reduced. Furthermore, the method and the user device for sending the user identity authentication information are used in combination during the encryption and decryption process, and thereby can prevent a malicious third party from pretending to be a legal user, and strengthen protection and authentication for user identities.

Description

technical field [0001] The present invention relates to the technical field of user identity security authentication in mobile communication systems, and in particular to a method for sending user identity authentication information and user equipment corresponding to the sending method. The visitor location register corresponding to the method of the location register, the method of determining the legal identity of the user, and the home location register corresponding to the method of determining the legal identity of the user. Background technique [0002] At present, mobile communication technology is widely used in the world, such as the Global System for Mobile Communication (GSM, Global System for Mobile Communication) in the era of the second generation mobile communication system (2G, 2nd Generation); the third generation mobile communication system (3G, 3rd Generation) era of Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), C...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that in the Temporary Identity (TMSI) mechanism adopted in 2G and 3G networks and the Globally Unique Temporary UE Identifier (GUTI) mechanism adopted in 4G LTE networks, there is a problem that user equipment sends to The service network transmits the technical defect of IMSI, and this technical defect will be exploited by malicious third-party attackers, which is not conducive to the confidentiality of user information

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