论文标题
汽车以太网中时间同步的脆弱性分析
Vulnerability Analysis of Time Synchronization in Automotive Ethernet
论文作者
论文摘要
许多网络通信协议的操作需要节点之间的准确时间同步。在汽车空间中，IEEE 802.3BW（通常称为汽车以太网）迅速成为电子控制单元（ECU）之间最流行的车载通信协议。自动驾驶汽车的快速发展是基于多个高清视频流的高通量，激光雷达读数，ML推断和车辆控制信号在同一巴士上传播。为了确保数以百万计的乘客和旁观者的可靠性，安全性和安全性，至关重要的是，即使在最低水平，堆栈至关重要。该标准中的时间同步协议是IEEE 802.1，最初是为虚拟和虚拟桥接区域网络（LAN）开发的。本文介绍了影响车辆汽车汽车以太网网络在ECUS之间同步时钟的能力的分析。为了证明这一点，我们使用Omnet ++离散事件模拟器来展示正常的操作，对热点时钟的故障转移以及一个网络开关上的黑洞攻击。
The operation of many network communication protocols require accurate time synchronization between nodes. In the automotive space, IEEE 802.3bw (commonly referred to as automotive ethernet) is quickly becoming the most popular in-vehicle communication protocol between electronic control units (ECUs). The rapid advance of autonomous vehicles is predicated on a high throughput of multiple HD video streams, LIDAR readings, ML inferences, and vehicular control signals propagating on the same bus. To ensure reliability, security, and safety, for millions of passengers and bystanders, it is essential that the stack is robust at even the lowest level. The time synchronization protocol in this standard is IEEE 802.1 AS which was initially developed for virtual and virtual bridge local area networks (LANs). This paper presents an analysis of failure modes affecting the ability of in-vehicle automotive ethernet networks to synchronize clocks between ECUs. To demonstrate this, we use the OMNet++ discrete event simulator to showcase normal operation, failover to the hot-standby clock, and a black hole attack on one network switch.
