基于无线信道特征的密钥生成与提取研究  

Generation and Extraction of Secret Keys Based on Properties of Wireless Channels

作　　者：隋雷[1,2] 郭渊博[1,2,3] 姜文博[1,2] 杨奎武[1,2] 

机构地区：[1]中国人民解放军信息工程大学,郑州450001 [2]数学工程与先进计算国家重点实验室,郑州450001 [3]通信信息控制和安全技术重点实验室,嘉兴314033

出　　处：《计算机科学》2015年第2期137-141,共5页Computer Science

基　　金：国家部委基金资助项目(9140C130103120C13062);河南省科技创新杰出青年计划项目(104100510025)资助

摘　　要：基于无线物理层信道特征参数构建密钥是依据无线信道衰落和噪声的客观存在,利用通信双方共享信道的时变性、互易性及唯一性,在评估彼此高度相关的信道参数的基础上协商提取密钥的一种物理层安全"一次一密"解决方案,具有无条件安全的属性。由于这方面的研究在现实应用中既可避免现行"四次握手"导致的安全漏洞,又摆脱了预分发密钥机制的限制,从而成为了无线网络安全领域的热点之一。对此领域的理论基础进行了分析,对物理层信道特征密钥生成和密钥提取这两个关键技术问题的研究现状进行了梳理,并按照评价指标探讨了现有方案存在的一些问题。最后,讨论了下一步研究的重点。Generating secret keys based on properties of wireless channels is a secure＂one pad one key＂solution at the physical layer,having the property of unconditional security,where secret keys are extracted collaboratively.According to fading wireless channels noises,evaluation of highly correlated channel parameters,the time-variable,reciprocal and unique natures of channels shared by both parties of communications are used.The work becomes one of the hotspots in wireless network security,because it can avoid security vulnerabilities in the 4-way handshake of the prevailing wireless networks and free itself of the limits in pre-distributing secret keys in practical application.The theoretical foundation of this field was analyzed.The related work of these two key issues,generation and extraction of secret keys based on properties of wireless channels was summarized.The problems of existing schemes according to performance principles were discussed.Finally,the focus of the future work based on existing problems was presented.

关 键 词：无线信道 特征参数 物理层安全 密钥生成与提取 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]