Enhanced inter-satellite networking authentication method based on location key

Abstract

The invention relates to an enhanced inter-satellite networking authentication method based on a position key. The method comprises the steps that a ground control center generates a real identity and a satellite-ground long-term shared key for each satellite; the ground control center generates a temporary identity label of each satellite and a long-term shared key between the satellites, and obtains orbit parameters of each satellite; each satellite calculates a first position key of the first satellite and calculates a first message verification code of the first satellite according to the calculated first position key so as to realize authentication of the second satellite to the first satellite; and each satellite calculates a second position key of the second satellite according to the orbit parameter of the second satellite, and calculates a second message verification code of the second satellite according to the calculated second position key so as to realize authentication of the first satellite to the second satellite. According to the inter-satellite networking authentication method, a safe and efficient inter-satellite authentication mechanism is realized, and inter-satellite rapid networking is realized.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, in particular to an enhanced inter-satellite networking authentication method based on a location key. Background technique [0002] With the continuous development of science and technology and the popularization of intelligent terminals, mobile communication technology has developed to the fifth generation (5G) to meet people's increasing communication needs. However, in many places, such as oceans, deserts, polar regions, mountains and valleys, terrestrial network coverage cannot be achieved due to expensive construction costs. Recent reports show that global mobile subscribers have reached 5.27 billion, with mobile services covering approximately 67% of the population. Subject to technical limitations and huge economic costs, only 20% of the land area is covered by mobile services, which is less than 6% of the earth's surface area. In this case, satellite networks have attra...

AI Technical Summary

Problems solved by technology

On the one hand, the links of the satellite network are highly exposed, so the information in the satellite network is vulnerable to illegal eavesdropping and malicious tampering

On the other hand, the satellite network topology is complex and dynamically changing, making it difficult to maintain a stable satellite link

[0006] Therefore, researchers have proposed a variety of authentication methods in satellite communication networks. However, in most authentication schemes, satellites act as relay nodes, forwarding and processing messages for ground users, base stations or servers, and do not realize the integration between satellites. Web authentication

In addition to these schemes, the existing inter-satellite network authentication methods mainly have the following problems: digital signature, public key cryptosystem or symmetric key technology is used to realize inter-satellite end-to-end authentication, the number of interaction rounds is large and the calculation is complicated, and the signaling overhead The calculation cost is high, and it is not suitable for satellites with limited computing power; the certification of low-orbit satellites in the low-orbit satellite network method relies on the gateway station on the ground, and the communication delay between the satellite and the ground is long, the protocol efficiency is low, and the certification takes time. Too long; the security is not high, the inter-satellite network authentication method relies on the shared authentication key, if the key is leaked, the security of the inter-satellite session key cannot be guaranteed, and forward security cannot be achieved; there is no security for the satellite The identity information of the satellite is protected for privacy, and the identity information of the satellite may be leaked during the authentication process of the inter-satellite network, which may lead to attacks on the identity information of the satellite.

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