Design of a link layer encryption system for Satellite Internet
Online published: 2024-11-16
Copyright
The global satellite communication industry has entered the era of Satellite Internet development. In the face of complex and ever-changing international political landscapes and increasingly severe cyberattacks, the security of Satellite Internet is of paramount importance. In response to the aforementioned issues, an innovative Satellite Internet network model had been constructed, analyzing the space link security risks posed by the characteristics of Satellite Internet, including the massive user base, open space environment, network interconnection, and highly dynamic network topology. Based on the principle of "adequate protection and comprehensive encryption where necessary", a flexible link layer encryption system for Satellite Internet is designed, which seamlessly adapts to the network architecture, operation mode, application scenario characteristics. Particularly, focusing on the diverse needs of massive Satellite Internet users, the system optimizes the encryption communication protocols. Given the numerous and highly dynamic network nodes of Satellite Internet, the key management function of the link layer encryption system is emphatically designed to ensure secure transmission of the business data and critical management information throughout the Satellite Internet service process, thereby significantly enhancing the security protection level of Satellite Internet space links. This designed system has undergone the practical testing and verification across the entire business process with different data types based on the ChinaSat-26 satellite. The results demonstrate that this encryption system can effectively encrypt the business data and critical information.
WANG Yixuan , LI Yang , YANG Haoqi , LI Yan , LIU Yanmei . Design of a link layer encryption system for Satellite Internet[J]. Journal of Cybersecurity, 2024 , 2(4) : 95 -105 . DOI: 10.20172/j.issn.2097-3136.240409
表 1 主流卫星通信系统采用协议Table 1 Protocols adopted by mainstream satellite communication systems |
| 序号 | 基带厂商 | 厂商国别 | 系统名称 | 前向协议 | 返向协议 |
| 1 | Gilat | 以色列 | SkyEdge IIC | DVB-S2、DVB-S2X | MF-TDMA、SCPC |
| 2 | iDirect | 美国 | Velocity | DVB-S2 | MF-TDMA |
| Dialog | DVB-S2X | Mx-DMA、MF-TDMA、SCPC | |||
| 3 | Viasat | 美国 | SurfBeam 2 | 私有 | 私有 |
| 4 | 航天恒星科技有限公司 | 中国 | Anovo | DVB-S2X | DVB-RCS2 |
| 5 | 中电科五十四所 | 中国 | Latice | DVB-S2X | MF-TDMA、SCPC |
| 6 | Hughes | 美国 | Jupiter | DVB-S2X | MF-TDMA |
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