Cracking the TSCH Channel Hopping in IEEE 802.15.4e
Cracking the TSCH Channel Hopping in IEEE 802.15.4e
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DOI：
10.1145/3243734.3278502
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
Xia Cheng;M. Sha
中科院分区：
文献类型：
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作者：
Xia Cheng;M. Sha
工业网络通常连接工业设施中的数百或数千个传感器和执行器，如钢铁厂和炼油厂。尽管典型的工业应用以低数据速率运行，但由于它们在恶劣的工业环境中对可靠和实时通信的关键需求，它们构成了独特的挑战。基于IEEE 802.15.4的无线传感器-执行器网络（wsan）技术由于其部署和维护成本较低，正被用于构建工业网络。电池供电的无线模块可以轻松廉价地改造工业设施中现有的传感器和执行器，而无需运行通信和供电电缆。为了满足严格的实时性和可靠性要求，无线传感器网络采用了一系列新颖的设计选择，例如采用时间同步信道跳变（TSCH）技术，该技术与传统的无线传感器网络（wsn）区别开来，后者只需要尽力而为的服务。TSCH中基于方程的信道跳变以牺牲安全性为代价简化了网络操作。我们的案例研究表明，攻击者可以通过静默地观察信道活动来逆向工程信道跳变序列，然后执行智能碰撞攻击。在这个海报提案中，我们描述了我们的目标问题，并介绍了基于公共可访问的TSCH实现的案例研究。
Industrial networks typically connect hundreds or thousands of sensors and actuators in industrial facilities, such as steel mills and oil refineries. Although the typical industrial applications operate at low data rates, they pose unique challenges because of their critical demands for reliable and real-time communication in harsh industrial environments. IEEE 802.15.4 based Wireless Sensor-Actuator Networks (WSANs) technology is appealing for use to construct industrial networks because it can be deployed and maintained inexpensively. Battery-powered wireless modules easily and inexpensively retrofit existing sensors and actuators in industrial facilities without running cabling for communication and power. To address the stringent real-time and reliability requirements, WSANs adopt a set of novel design choices such as employing the Time-Synchronized Channel Hopping (TSCH) technology that distinguish themselves from traditional Wireless Sensor Networks (WSNs) that require only best effort services. The equation-based channel hopping used in TSCH simplifies the network operations at the cost of security. Our case study shows that an attacker can reverse engineer the channel hopping sequence by silently observing the channel activities and then perform smart collision attacks. In this poster proposal, we describe our target problem and present our case study based on a publicly accessible implementation of TSCH.