A data encryption method in a satellite-to-earth communication system

Abstract

An embodiment of the present invention provides a data encryption method in a satellite-ground communication system. It includes: determining the authentication parameter tuple according to the access request sent by the first terminal, and sending it to the first access point in the data transmission path of the first terminal, so that the first access point A terminal performs two-way authentication, and negotiates a first session key with the first terminal when the two-way authentication is successful; generates a first encrypted random number and sends it to the first access point, so that the first access point The ingress negotiates with the second access point in the data transmission path to obtain a second session key. The method provided by the embodiment of the present invention encrypts the data transmitted in the access network area and the backbone network area respectively through different encryption methods, realizes encrypted data transmission throughout the entire process, and ensures the security of the space-ground integrated network.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of network security, in particular to a data encryption method in a satellite-to-earth communication system. Background technique [0002] The space-ground integrated network follows the idea of ​​"space-based networking, ground-network cross-generation, space-ground interconnection", overall planning, focusing on the construction of space-based information networks, independent innovation, typical demonstration of the future Internet, collaborative docking, and active application of special achievements in mobile communications. Realize the integrated development of space-based information network, future Internet, and mobile communication network, and form a cyberspace with interconnection of everything, human-computer interaction, and integration of heaven and earth. In this space, the boundaries between networks and systems are becoming increasingly blurred, and it is difficult ...

AI Technical Summary

Problems solved by technology

The space-ground integrated network is one of the supporting technologies for the construction of cyberspace. The complex topology, high heterogeneity, and diversified entity types of the space-ground integrated network make the traditional password application model unable to completely solve new security problems. , systematically exert the overall guarantee effectiveness of ciphers in the security of the space-ground integration network, so as to realize the encryption of the data transmitted in the space-ground integration network

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