摘要
为实现躯域无线传感器网络(躯感网)中生理数据的安全可靠传输,设计了一种基于生物特征的躯感网密钥分发机制。该机制利用传感器节点采集的心血管信号提取心脏搏动间隔,编码生成一个称作个体识别码的二进制序列,进而实施冗余编码生成冗余个体识别码,并利用该冗余个体识别码结合模糊承诺方法绑定密钥,从而实现密钥在躯感网内的保密传输。实验结果表明:该机制具有很好的安全性。相比于直接采用个体识别码绑定密钥,冗余编码的引入有效降低了密钥分发的错误拒绝率和汉明阈值,提高了密钥分发的速度,并且不影响系统的安全性。
To secure transmission of physiological data in body sensor network （ BSN）, a biometrics-based key distribution scheme is specifically designed for the intra-communieations of BSN. The scheme utilizes inter-pulse interval （IPI）derived from cardiovascular signals which are collected from sensor nodes to generate independently a redundant entity identifier,which is then combined with a fuzzy commitment scheme to protect key distribution. Experimental results show that the scheme is effective. Compared with the existing scheme, the use of redundant entity identifier is effective to reduce both false rejection rate and the threshold of identification as Well as to improve the speed of key distribution without compromising of the security level.
出处
《传感器与微系统》
CSCD
北大核心
2012年第2期19-22,共4页
Transducer and Microsystem Technologies
基金
国家重点基础研究发展计划("973"计划)资助项目(2010CB732606)
