时间触发以太网时钟同步协议攻击行为的性能评估方法

时间触发以太网时钟同步协议的PCF帧（Protocal Control Frames）是决定该网络能否正常工作的核心要素，一旦发生针对PCF帧的攻击行为，可能会导致整个时间触发以太网的时序错乱和瘫痪。为了更好的深入分析这种攻击行为，本文提出一种针对PCF帧的攻击行为的性能评估方法，可对攻击者能力和攻击造成的影响进行有效评估。首先以不同阶段的时钟同步过程为考量依据，对攻击行为的实施过程和造成的影响进行详细分析，建立针对PCF帧的攻击行为分类框架。然后对攻击行为的要素进行分析提取，并结合量化参数，推导出攻击行为性能量化的数学表述。最后通过典型示例，对提出的方法进行应用说明,结果表明，本文的方法可以较为合理的对攻击效能进行评估。

Performance evaluation method of attack behavior of clock synchronization protocol in Time-Triggered Ethernet

The PCF frame of clock synchronization protocol of Time-Triggered Ethernet is the core element to determine whether the network can work normally. Once the attack against PCF frame occurs, the timing of Time-Triggered Ethernet may be disordered and paralyzed. In order to better analyze the attack behavior, a performance evaluation method was proposed, which can effectively assess the capabilities of attackers and the impact of attacks. Firstly, based on the different stages of clock synchronization process, the implementation process and impact of the attack were analyzed in detail, and the attack classification framework for PCF frame was established. Then, the elements of attack behavior were analyzed and extracted, and combined with the quantitative parameters, the quantitative mathematical expression of attack behavior performance was derived. Finally, a typical example is given to illustrate the application of the proposed method. The results show that the method can reasonably evaluate the attack effectiveness.