CAJ | 학술논문

针对Echenauer和Gligor的随机密钥预分配方案中存在的不足，提出一种把密钥池中的密钥分为不同的安全级别的密钥预分配方案。该方案利用Hash函数的单向运算特性，使安全等级高的密钥不会泄露出安全等级低的密钥信息，而节点间通信密钥的建立不受影响。分析表明，与现有的密钥预分配方案相比，该方案的通信开销、存储开销和计算开销变化小，安全性能高，适合在无线传感器网络中使用。
침대Echenauer화Gligor적수궤밀약예분배방안중존재적불족，제출일충파밀약지중적밀약분위불동적안전급별적밀약예분배방안。해방안이용Hash함수적단향운산특성，사안전등급고적밀약불회설로출안전등급저적밀약신식，이절점간통신밀약적건립불수영향。분석표명，여현유적밀약예분배방안상비，해방안적통신개소、존저개소화계산개소변화소，안전성능고，괄합재무선전감기망락중사용。
In light of the defects of Echenaue and Gligor probabilistic key pre-distribution scheme , we present a key pre-distribution scheme which divides the keys in key pool into different safety grade .The scheme uses the one-way computation property of Hash function to enable the keys with higher safety grade having no possibility in disclosing the key information with lower safety grade , while the establishment of communication keys between the nodes is not affected .Analysis shows that compared with existing key pre-distribution scheme, this one has less changes in overheads of communication , storage and computation , has high safety , and is suitable for application in wireless sensor networks.