Secure routing for LEO satellite network survivability
Secure routing for LEO satellite network survivability
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DOI：
10.1016/j.comnet.2022.109011
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发表时间：
2022-05-19
影响因子：
5.6
通讯作者：
Yu, Keping
中科院分区：
文献类型：
--
作者：
Li, Hui;Shi, Dongcong;Yu, Keping
安全路由算法对低轨卫星网络生存性的性能起着重要的作用。然而，由于星间链路的不稳定性、开放性和暴露性，LEO卫星网络内部路由容易受到恶意攻击。考虑到信任管理在解决内部攻击方面具有更好的性能，提出了一种基于节点信任的LEO卫星网络安全路由算法--信任管理算法。该方法基于分布式信任评估模型，通过D-S证据理论计算卫星节点间的直接信任、间接信任和聚合信任值。然后，结合低成本的OPSPF路由协议和信任评估，设计了一种新的信任评估算法。STL算法通过及时检测和隔离卫星网络中的恶意节点，降低了内部攻击造成的恶意丢包的影响。仿真结果表明，与OPSPF算法相比，该算法的分组投递率平均提高了27%，丢包率平均降低了70%。
Secure routing algorithm plays an important role in the performance of LEO satellite network survivability. However, due to the instability, openness and exposure of inter-satellite links, the internal routing of LEO sat-ellite network is vulnerable to malicious attacks. Considering that trust management has a better performance in solving the internal attacks, this paper proposes a secure routing algorithm based on node trust for LEO satellite network, called SLT. The SLT is based on the distributed trust evaluation model, which is used to calculate the direct trust, indirect trust and aggregate trust value between satellite nodes through D-S evidence theory. Then, combining the low cost OPSPF routing protocol with the trust evaluation, the SLT algorithm is designed. Through timely detection and isolation of malicious nodes in the satellite network, STL algorithm can reduce the impact of malicious packet dropping caused by internal attacks. Finally, the simulations verifies that SLT algorithm has an average increase of 27% in packet delivery rate and an average decrease of 70% in packet loss rate, compared with OPSPF.