摘 要
随着无线通信技术的迅猛发展，网络应用日益广泛，但随之而来的安全威胁也愈发严峻，传统的认证机制已难以满足复杂多变的安全需求。本研究旨在针对无线通信网络中的安全认证问题，提出一种基于多层次身份验证与动态密钥协商的新型认证机制。通过结合公钥基础设施（PKI）与轻量级对称加密算法，该机制在保障安全性的同时显著降低了计算开销。研究采用理论分析与仿真实验相结合的方法，从认证效率、抗攻击能力及资源消耗等方面对所提方案进行全面评估。实验结果表明，该机制在低功耗设备中展现出优异的性能，能够有效抵御中间人攻击和重放攻击，同时显著提升认证速度。本研究的主要创新点在于将动态密钥协商引入无线认证过程，并优化了传统PKI体系的计算负担，为未来无线通信网络的安全架构设计提供了重要参考。
关键词：无线通信安全；多层次身份验证；动态密钥协商
Abstract
With the rapid development of wireless communication technologies and the increasing prevalence of network applications, security threats have become more severe. Traditional authentication mechanisms are no longer sufficient to meet the complex and evolving security requirements. This study proposes a novel authentication mechanism for wireless communication networks based on multi-level identity verification and dynamic key negotiation. By integrating Public Key Infrastructure (PKI) with lightweight symmetric encryption algorithms, the mechanism ensures robust security while significantly reducing computational overhead. A combination of theoretical analysis and simulation experiments was employed to comprehensively evaluate the proposed scheme in terms of authentication efficiency, attack resistance, and resource consumption. The experimental results demonstrate that the mechanism exhibits superior performance in low-power devices, effectively countering man-in-the-middle and replay attacks while notably enhancing authentication speed. The primary innovation of this research lies in incorporating dynamic key negotiation into the wireless authentication process and optimizing the computational burden of traditional PKI systems, providing critical insights for the design of future secure architectures in wireless communication networks.
Keywords: Wireless Communication Security；Multi-Level Authentication；Dynamic Key Negotiation
目 录
引言 1
一、无线通信网络的安全威胁分析 1
（一）安全威胁的分类与特征 1
（二）常见攻击方式及其影响 2
（三）网络安全需求评估 2
二、安全认证机制的基本原理 3
（一）认证机制的核心概念 3
（二）密钥管理与加密技术 3
（三）用户身份验证方法 3
三、先进认证技术在无线网络中的应用 4
（一）基于生物特征的身份认证 4
（二）多因素认证的设计与实现 4
（三）区块链技术在认证中的潜力 5
四、安全认证机制的优化与挑战 5
（一）高效认证协议的设计策略 5
（二）实时性与安全性之间的权衡 6
（三）未来发展方向与关键技术 6
结 论 6
致 谢 8
参考文献 9
