综合化航空电子系统安全技术研究进展

PROGRESS IN RESEARCH OF SECURITY TECHNOLOGIES IN INTEGRATED AVIONICS SYSTEM

综合化航空电子系统具有高度综合化、模块化和开放性的特点。各子系统之间相互联网通信,资源高度共享、数据高度融合等特性使得综合化航空电子系统存在巨大的信息安全隐患。事实上,信息安全技术已经成为影响飞机安全和任务执行的关键因素之一。综合化航空电子系统要求信息安全等级为CC(Common Criteria)的最高安全级别,信息安全模块要求实时性和低开销,因此综合化航空电子系统安全技术面临着巨大的挑战。综述综合化航空电子系统安全体系结构,分析和比较了各种综合化航空电子系统安全保障机制,具体包括:实时操作系统的时空隔离机制,虚通道通信机制,数据通信、处理和存储过程中的机密性、完整性保护机制等。通过这些分析和比较,希望能够为实现具有高可靠性、高可生存性和高可用性的综合化航空电子系统安全技术奠定基础。

Integrated avionics system（IAS） is characterised in its high integration,modularisation and openness.The networking mutual communication,highly resources sharing and data fusion between each subsystem cause huge information security pitfalls on the IAS.As a matter of fact,information security technologies have become one of the key factors in affecting the airplane security and mission execution.The IAS requires highest ranking of CC（common criteria） for its information security.The information security modules seek real time property and low overhead,hence the security technologies in the system encounter great challenges.In this paper,we overview the security architecture of IAS,analyse and compare the security mechanisms of it,specifically the real-time OS＇ space-time isolation,virtual channel communication mechanism,confidentiality and integrity protection during data communication,processing and storage.Through these analyses and comparisons,we wish to lay a foundation on security technologies of IAS with high reliability,survivability and availability.