基于中国剩余定理的传感器网络簇内密钥共享

Key Sharing in Hierarchical Sensor Networks Based on Chinese Remainder Theorem

针对层次型无线传感器网络,提出一种新颖的密钥共享方案,利用中国剩余定理来解决簇头与簇成员之间的共享密钥对建立问题.通过实验与理论分析证明,该方案与其它方案相比具有以下优点:1)存储最优,只要求每个传感器节点存储2个密钥,且存储开销与网络规模无关;2)网络全连通,任何一对簇头-簇成员节点都能够建立1个全网唯一的共享密钥;3)计算开销和通信开销低;4)网络能够抵抗物理捕获节点攻击和共谋攻击.

A novel key agreement is proposed for a three-tier hierarchical wireless sensor network.It employs Chinese remainder theorem to establish the pairwise key between a node and its cluster head.Compared with existing key management schemes,it has a lot of good properties.First,it is optimal in saving sensor node′s storage;each node only stores two keys,which is independent from the network size.Second,the network is wholly connected,and each pair neighboring nodes can set up a unique pairwise key.Third,it requires low computation and communication overhead over the whole network.And lastly,it is resilient against the node capture attack and collusion attack.