CCSDS空间数据链路层安全协议研究

Research on space data link security protocol of CCSDS

空间数据系统咨询委员会(CCSDS)一直致力于空间任务安全性方面的工作,并成立了一个工作小组,旨在数据链路层为遥控遥测通信制定安全协议,即空间数据链路安全(SDLS)协议。该协议为已存在的空间数据链路协议(TC、TM和AOS)提供认证、加密和认证性加密安全服务。本文简介了SDLS协议制订的背景及其特点,较为详细地描述了其协议结构、支持的服务类型以及协议的基线实现模式,最后对该协议的应用提出了一些建议。

For more than 10 years ongoing effort in the area of space mission security, the Consultative Committee of Space Data System（CCSDS） has formed a joint working group to develop a security protocol at the Data Link layer for Telecommand and Telemetry communications. The result of this working group is the production of CCSDS Space Data Link Security（SDLS）protocol. This protocol provides Security Services like Authentication, Encryption and Authenticated Encryption to the existing CCSDS family of Space Data Link（SDL） protocols： Telecommand（TC）, Telemetry（TM） and Advanced Orbiting System（AOS）. This paper gives a general description of SDLS protocol, and then summaries some suggestions for its application in China＇s space mission.