改进的LEO卫星网络密钥管理协议

摘要

卫星网络密钥管理协议是实现网络节点间安全通信的前提.在分析卫星网络密钥管理协议特性的基础上,提出了分布式与集中式相结合的LEO卫星网络密钥建立方案,改进了密钥管理协议的分簇方式和密钥更新方法,并进行了分析和验证.该方法进一步增强了安全性,同时提高了密钥更新速度.%Key management protocol is the base of secure communications between satellite network nodes. Character of key management protocol in the terms of satellite network environment was analyzed. A distributed key establishment scheme combined with centralized one was proposed for LEO satellite network. Then, an improved key management protocol was given with new clustered rekeying mathod. At the end, it was analyzed and checked. The result indicates that it could help to tighten security with shorter key updating period.