关于CCSDS体制数据安全保护实施位置的探讨

主要阐述CCSDS（空间数据系统咨询委员会）标准的信息安全问题，重点是航天器安全，从分析空间数据面临的安全威胁出发，讨论了CCSDS不同安全实施位置的特点；并在此基础上，通过对CCSDS业务及数据结构的影响对比，总结出不同安全实施方法的优缺点，该结合对于采用CCSDS标准的空间数据系统如何解决信息安全问题，具有一定的参考价值。

Discussion of Data Security Implementation Options of CCSDS Recommedations

Information security about the CCSDS(Consultative Committee for Space Data System)recommendations is addressed, and the protection of spacecraft emphasized. The generic space mission security threats is simply analyzed. On the basis of the charac teristics of different security implementation options, benefits and shortcomings of dif ferent security implementation are obtained through comparing the impact on the CCSDS data architectures and services. The conclusion is useful to solve information security problems when space data system standards of CCSDS are applied.