A Secure and Efficient Handover Authentication and Key Management Protocol for 5G Networks

摘要

As a major component of the fifth-generation(5G)wireless networks,network densification greatly in-creases the network capacity by adding more cell sites into the network.However,the densified network increases the handover frequency of fast-moving mobile users,like vehicles.Thus,seamless handover with security provision is highly desirable in 5G networks.The third generation partnership project(3GPP)has been working on stan-dardization of the handover procedure in 5G networks to meet the stringent efficiency and security requirement.However,the existing handover authentication process in 5G networks has security flaws,i.e.vulnerable to replay and de-synchronization attacks,and cannot provide per-fect forward secrecy.In this paper,we propose a secure and efficient handover authentication and key manage-ment protocol utilizing the Chinese remainder theory.The proposed scheme preserves the majority part of the original 5G system architecture defined by 3GPP,thus can be easily implemented in practice.Formal security anal-ysis based on BAN-logic shows that the proposed scheme achieves secure mutual authentication and can remedy some security flaws in original 5G handover process.Performance analysis shows that the proposed protocol has lower communication overhead and computation overhead compared with other handover authentication schemes.