利用分层的密钥共享体制,提出了一种基于ID的Adhoc网络的组密钥管理方案。依据格的理论,在有界分配格中所有补元组成的集合构成该格的一个子格。在该分配格中将元及对应的补元格节点分为普通节点和服务节点,服务节点持有的私钥份额信息量较多。避免了将密钥平等分发给每个节点,一旦任意K个节点被攻破,就可以更新组密钥的缺陷。以格作为逻辑结构,具有高联通性、低负载、扩展性强的特点。通过运用Opnet网络仿真软件仿真的结果表明,该方案更高效、安全、抗攻击能力更强。
Hierarchical secret sharing system is proposed based on the identity of the Ad hoc group key managementscheme.Based on lattice theory,all the patch elements of the bounded distributive lattices constitute a sub-lattice.All the ele-ment and patch element are divided into ordinary node and service node in the distribution lattice.The shares held by servernodes include more information than that held by ordinary nodes.The scheme can reduce the risk of distributing key equiva-lently to all nodes which may lead the group key to be renewed if any K nodes are attacked.The logical structure of thescheme is a grid.This scheme not only has the advantages of high connectivity and low load,but also has high expandability.By using the network simulator Opnet simulation results show that this scheme is more efficient,secure and stronger anti-at-tack than traditional scheme.