一种改进随机密钥预分配的网络分簇密钥管理方案

由于原随机密钥的预分配的管理方案节点存储空间要求高、抗毁性较低,提出了一种使用公钥和引用Hash表中开放式并增加密钥管理的非身份认证密钥管理方案.改进的方案中降低网络节点存储空间要求,增强无线传感器网络抗毁性能.Matlab仿真表明,此方案中单个节点密钥存储量减少至少一半;网络中簇内节点连接率为100%;在安全性方面,能有效减少节点密钥破解的数量,未捕获节点的密钥暴露概率是比原随机密钥的预分配的管理方案要低20%以上.

An improved pre-distribution clustering key management scheme of the network random key

Because the node storage space of the pre- distribution management scheme of the original random key has high requirements and low survivability,this paper proposes an improved key management scheme of non- identity authentication by using a public key and an open- addressing in the hash table,This improved scheme reduces the storage space of the network nodes,enhances the survivability performance of wireless sensor networks.The Matlab simulation shows that in this scheme,the space of a single node key storage has reduced to at least half of the original while the cluster node connection rate in the network is 100%; in terms of safety,it can effectively reduce the number of cracked node keys,and the uncaught node key exposure probability is 20% lower than that in the original scheme.