基于信道特征的协作密钥提取技术研究  

Cooperative Key Extraction based on Channel Characteristics

作　　者：王莅康[1] 吴越[1] 

机构地区：[1]上海交通大学信息安全工程学院,上海200240

出　　处：《信息安全与通信保密》2011年第6期98-101,共4页Information Security and Communications Privacy

基　　金：国家自然科学基金资助项目(批准号:60932003)

摘　　要：利用无线信道物理特征的对称性来保证无线信道安全一直是学术研究的热点。Suhas等人在经硬件改造的802.11平台上实现了基于信道特征的密钥提取测试,但是密钥生成速率较低。针对这一点提出了改进,通过借鉴协作通信技术,在密钥提取过程中引入合作节点以提高密钥生成速率。这里将整个过程分为协作探测信道、量化与协商纠错和密钥融合3个步骤。这里给出的设计可以显著提高密钥生成的速率。To enhance the security by the symmetry of wireless channel is always an academic research hotspot. Suhas and others implement the key extraction test on the 802.11 platform after hardware modification,but it shows a low bit rate. So this original design is studied and improved. With the cooperative communication technology for reference,a cooperative node is introduced into the key extraction system,thus to raise the bit rate. The whole design could be divided into three parts：cooperative exploring,quantization and information reconciliation,and key fusion. This design could raise the bit rate significantly.

关 键 词：无线信道 密钥提取 协作通信 

分 类 号：TN918.2[电子电信—通信与信息系统]