层簇式空间网络组密钥管理方案研究  

Research on Layer Cluster Multicast Key Management Scheme for Spatial Network

作　　者：尤启迪 赵叶 YOU Qi-di;ZHAO Ye(Computer Science and Technology of Tsinghua University,Beijing 100084,China;Beijing Institute of Satellite Information Engineering,Beijing 100086,China)

机构地区：[1]清华大学计算机科学与技术系,北京100084 [2]北京卫星信息工程研究所,北京100086

出　　处：《软件导刊》2020年第4期252-256,共5页Software Guide

摘　　要：为了改善未来空间网络多播应用面临的群组成员管理难度更大、通信时延更长、安全性要求更高的问题,通过对已有空间网络组密钥管理方案AGKM的性能分析和对比,提出了一种基于层簇式网络架构的多播组密钥管理方案,方案将中国剩余定理(CRT)及椭圆曲线定理(ECC)融入管理算法。实验结果表明,基于层簇式的方案降低了组密钥在更新过程中的通信开销、计算开销及密钥存储开销,分别达到了O(n+1)、O(n+2)以及3个多播包的结果,较对比方案性能提升了20%。基于层簇式的网络组密钥管理方案能够有效降低密钥更新中的消息、计算及存储开销,提升管理性能,适用于未来空间网络管理需求。In order to improve the problems faced by the future space network multicast applications,such as more difficult group member management,longer communication delay and higher security requirements,based on the performance analysis and comparison of the existing spatial network group key management scheme AGKM,a multicast group key management scheme based on the hierarchical cluster network architecture is proposed,which integrates the Chinese Remainder Theorem(CRT)and elliptic curve theorem(ECC)into the management algorithm.The experimental results show that the proposed scheme based on the layer cluster reduces the message cost,calculation cost and key storage in the process of multicast key update,and achieves the results of O(n+1),O(n+2)and three multicast packets respectively,which improves the performance of the comparison scheme by 20%.Layer cluster-based network group key management scheme can effectively reduce the cost of message,calculation and storage in key update and improve the management performance,which is suitable for future spatial network management needs.

关 键 词：安全组播 密钥管理 卫星网络 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]