基于CRT的gNB间切换认证方法与密钥协商协议  

Handover authentication method and key agreement protocol between gNB based on CRT

作　　者：谢桢 季新生[1,2] 游伟 Xie Zhen;Ji Xinsheng;You Wei(People’s Liberation Army Strategic Support Force Information Engineering University,Zhengzhou 450001,China;Purple Mountain Laboratories,Nanjing 211111,China)

机构地区：[1]解放军战略支援部队信息工程大学,郑州450001 [2]网络通信与安全紫金山实验室,南京211111

出　　处：《计算机应用研究》2022年第11期3450-3454,3460,共6页Application Research of Computers

基　　金：国家重点研发计划资助项目;国家自然科学基金资助项目。

摘　　要：针对当前UE在gNB间的切换认证与密钥协商过程存在的仅有两跳前向安全性和易受拒绝服务攻击等问题,提出了一种基于中国剩余定理(CRT)的切换认证与密钥协商协议。该协议利用秘密共享原理,令源gNB和所有可能的目标gNB构成一个群体,把真实的参数作为“秘密”在源gNB和唯一的目标gNB间共享,使得关键参数NH和NCC能在源gNB和目标gNB间安全传输。实验结果表明,该协议是安全的,相比同类的改进协议具有效率优势。The handover authentication and key agreement process between UE and gNB has some defects,such as only two hop forward security and vulnerable to denial of service attack.To solve these problems,this paper proposed a handover authentication and key agreement protocol based on China remainder theorem(CRT).The protocol formed a group between source gNB and all possible target gNBs by using the principle of secret sharing.The source gNB and the only target gNB shared the real parameters as “secrets”,so that the source gNB transmitted the key parameters NH and NCC to the target gNB safely.The simulation results show that the protocol is secure and has efficiency advantages compared with other similar improved protocols.

关 键 词：5G gNB 切换认证 形式化分析 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]