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Security-Aware Scheduling for FlexRay-Based Real-Time Automotive Systems

机译：安全意识的基于FlexRay的实时汽车系统调度

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摘要

FlexRay is a hybrid communication protocol tailored to the requirements of safety-critical distributed real-time automotive systems, providing support for the transmission of time-critical periodic frames in a static segment and event-triggered frames in a dynamic segment. With the development of intelligence and networking of vehicles, such systems are becoming increasingly connected to external environments; thus, security has become a pressing issue in system design. However, FlexRay-based architecture does not have direct support for secure communication. When deploying the security mechanisms on these architectures, a primary challenge is to guarantee the schedulability of systems, given the tight resource constraints and strict timing constraints. In this paper, we apply an authentication mechanism based on the delayed exposure of one-way key chains to protect the authenticity of messages on FlexRay and make a slight modification to reduce the authentication delay. On that basis, we propose a mixed integer linear programming formulation for solving the scheduling problem of FlexRay-based real-time automotive systems subject to both authentication mechanism constraints and other traditional design constraints. Experimental results demonstrate the effectiveness and efficiency of the proposed method in system design and indicate the necessity of collaborative design between security and other functionalities.
机译：FlexRay是一种用于安全关键分布式实时汽车系统的要求的混合通信协议，提供了支持动态段中的静态段和事件触发帧中的时间关键周期帧的支持。随着智力和车辆网络的发展，这种系统越来越多地连接到外部环境;因此，安全性已成为系统设计中的一个紧迫问题。但是，FlexRay的架构没有直接支持安全通信。在部署在这些架构上的安全机制时，主要挑战是保证系统的调度性，给定资源限制和严格的时序约束。在本文中，我们基于单向钥匙链的延迟曝光来应用认证机制，以保护FlexRay上的消息的真实性，并略微修改以降低认证延迟。在此基础上，我们提出了一种混合整数线性编程配方，用于解决受认证机制约束和其他传统设计约束的基于FlexRay的实时汽车系统的调度问题。实验结果表明了系统设计中提出的方法的有效性和效率，并表明安全性和其他功能之间的协作设计的必要性。

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  • 来源
    《Mathematical Problems in Engineering》 |2019年第13期|4130756.1-4130756.17|共17页
  • 作者

    Zhao R.; Qin G. H.; Chen H. P.; Qin J.; Yan J.;

  • 作者单位

    Jilin Univ Automot Engn Changchun 130000 Jilin Peoples R China;

    Jilin Univ Comp Sci & Technol Changchun 130000 Jilin Peoples R China;

    Jilin Univ Comp Sci & Technol Changchun 130000 Jilin Peoples R China;

    Jilin Univ Comp Sci & Technol Changchun 130000 Jilin Peoples R China;

    Jilin Univ Comp Sci & Technol Changchun 130000 Jilin Peoples R China;

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