Round-Efficient Security Authentication Protocol for 5G Network

The security access problem of Fifth Generation Mobile communication (5G) system has become a research hotspot. The 3GPP defines 5G authentication and key agreement (5G AKA) protocol, which is used to protect the access security of mobile devices in 5G network. But it is found that there are still some security loopholes and some unrealistic system assumptions which play a decisive role in security, such as user tracking, pre-shared key K disclosure, security between service network and home network, which makes 5G vulnerable to various attacks. Therefore, we propose a security authentication protocol for 5G network based on Schnorr signature and bilinear algorithm to solve the above problems. Then the security of the protocol is proved by using Scyther. Finally, the theoretical analysis verifies the security of the protocol, and the security comparison and efficiency analysis further verify that the protocol has good resistance performance.