面向LTE-A的切换认证安全协议应用研究

Research on the Application of Handover Authentication Security Protocol Based on LTE-A

LTE-A网络现已成为移动应用的主要传输管道,但LTE-A标准中的切换过程仍存在一定的复杂性和安全缺陷.为了解决LTE-A标准和传统切换认证的缺陷,本文设计了一种基于身份的切换认证方案.在用户注册阶段,通过基于身份的加密体制来保障用户身份信息不被泄漏;在切换认证阶段,采用新的基于身份的密钥协商协议,相比传统基于身份的密钥协商协议,该协议无需双线性对运算,大大减小了计算开销和通信开销,本文在该协议的基础上加以改进,使得更加适用于LTE-A网络.相比其它方案,本方案不仅具有更好的性能,而且满足前向保密性及防重放攻击等安全性.本文运用着色Petri网进行建模和仿真分析,仿真结果表明,本协议是有效的,且具有更高的安全性.

LTE-A has become the main channel of mobile applications,but the standard handover protocolsstill exist some complexities and security vulnerabilities. In order to solve the vulnerabilities in the LTE-A standard and traditional handover authentication protocols,we designed an identity based handover authentication scheme. In user registration phase,the identity based encryption system is used to protect the user＇s identity information; In handover authentication phase,the new identity based key agreement protocols is proposed,compared with the traditional identity based key agreement protocol,the protocol without bilinear operation,which greatly reduces the computational overhead and communication overhead,and it more suitable for LTE-A networks. Compared with other schemes,ourscheme not only has better performance,but also satisfies the security of forw ard secrecy and resist a replay attacks. In this paper,we use Colored Petri Nets（ CPN） for modeling and simulation analysis,the simulation results show that this protocol is effective,and has a higher security.