WSN中同构模型下动态组密钥管理方案

研究了同构网络模型的组密钥管理问题,首次给出了一个明确的、更完整的动态组密钥管理模型,并提出了一种基于多个对称多项式的动态组密钥管理方案。该方案能够为任意多于2个且不大于节点总数的节点组成的动态多播组提供密钥管理功能,解决了多播组建立、节点加入、退出等所引发的与组密钥相关的问题。该方案支持节点移动,具有可扩展性,并很好地解决了密钥更新过程中多播通信的不可靠性。组成员节点通过计算获得组密钥,只需要少量的无线通信开销,大大降低了协商组密钥的代价。分析比较认为,方案在存储、计算和通信开销方面具有很好的性能,更适用于资源受限的无线传感器网络。

Dynamic group key management scheme for homogeneous wireless sensor networks

Focuses on the study of GKM scheme applicable to homogenous network model,proposed a clear and complete key management model for dynamic groups for the first time and exposed a dynamic group key management(DGKM) scheme based on symmetric polynomials.The scheme provided a solution to related group key management issues,such as key establishment,key updating,node addition and node revocation,for a multicast group consisting of any number(bigger than 2 and less than the total number) of nodes.Besides,the scheme supported node mobility as well as scalability and coped well with the unreliable wireless multicast communication.Group members can get group key by computing and with little wireless communication,therefore,greatly reduced the cost of key agreement.The analysis shows the scheme has very good performance in terms of storage,computation as well as communication and is more suitable to wireless sensor networks with limited capability.