基于边密钥的传感器网络动态密钥协商方案

Edge key-based dynamic keying scheme for wireless sensor network

由于传感器自身资源受限,目前采用的主要安全技术是对称密钥与密钥预分配策略。在当前基于对称密钥的动态密钥协商方案中,节点预装入密钥材料,部署后与邻居节点通过共享密钥材料建立配对密钥。为提高动态密钥协商中密钥材料的安全性,在一个典型的动态密钥协商方案,即LBKP方案的研究基础上,提出了一种新的基于边密钥的传感器网络动态密钥协商方案。与LBKP方案相比,该方案有效地减少了内存开销,提高了密钥安全性。

For constraint resources of sensor nodes, existing security approaches are symmetric key and key pre-distribution. In most of existing symmetric key based dynamic keying schemes, pairwise key is established by using the shared keying materials preloaded on sensors. For improving the security of keying materials, this paper proposed an edge key-based dynamic keying scheme （EK-DKS） for wireless sensor network based on the study of a typical dynamic keying scheme LBKP（ location based key pre-distribution） scheme. Compared with LBKP scheme, EK-DKS scheme reduced the storage overhead and im- proved the security effectively.