Satellite-ground and inter-satellite networking authentication method and system fused with double-layer satellite network and application

Abstract

The invention belongs to the technical field of satellite communication information security, and discloses a satellite-ground and inter-satellite networking authentication method and system fused with a double-layer satellite network, and application, a ground control center, a high-orbit satellite network and a low-orbit satellite network adopt a grading control mode, the ground control center controls and completes authentication with the high-orbit satellite, and the high-orbit satellites authenticate and control the low-orbit satellite group; according to different authentication entities, the authentication entities are divided into three types: 1) satellite-ground inter-satellite authentication of high-orbit satellites, 2) authentication between interlayer and same-orbit low-orbit satellites, and 3) authentication between adjacent-orbit low-orbit satellites, wherein the ground control center uniformly stores all shared master keys with the high-orbit satellites, and the high-orbit satellites store shared master keys of the low-orbit satellites under the jurisdiction of the high-orbit satellites. According to the invention, bidirectional security authentication between high-orbit satellites and between the high-orbit satellites and a ground control center, interlayer authentication and authentication between low-orbit satellites in the same orbit and adjacent orbits are realized; and the security authentication requirements of satellite-ground and inter-satellite networking of the satellite network can be met with relatively low authentication overhead.

Description

technical field [0001] The invention belongs to the technical field of satellite communication information security, and in particular relates to an authentication method, system and application of an integrated double-layer satellite network satellite-ground and inter-satellite network. Background technique [0002] At present: The development of modern communication is changing with each passing day, and satellite communication plays an indispensable role. With the rapid development of 5G communication in 2020, the future 5G mobile communication system will integrate radio access technologies including satellite components, and develop mega-constellations to expand terrestrial services. Satellite communication has the characteristics of large coverage, flexibility and high reliability, and can be used as a supplementary solution for emergency and disaster recovery. Satellite networks can also support machine-type communication, paving the way for the development of new ap...

AI Technical Summary

Problems solved by technology

At present, the number of satellites is becoming massive, and the large computing overhead increases the authentication delay. Therefore, it is necessary to reduce the authentication overhead and improve the authentication efficiency.

[0009] (2) The current inter-satellite and satellite-to-earth networking authentication protocols are mostly aimed at a single scenario, and it is difficult to give full play to their advantages when applied to multiple scenarios

And the inter-satellite authentication of low-orbit satellites relies too much on the ground station, which increases the pressure on the ground station to process authentication requests

[0010] (3) The current satellite network authentication scheme is lacking in the security of satellite identity privacy protection

[0011] The difficulty and significance of solving the above problems and defects are: massive satellite constellations have stricter performance requirements for authentication schemes and more complex scenarios

However, there are still various security and performance defects in the current scheme, and the scheme design lacks a systematic analysis of the scenario

Images