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Intelligent Lighting ZLL: There is a danger of being cracked by hackers
In order to investigate the safety status of the lighting system, three professionals from the University of Erlangen-Nuremberg conducted in-depth research on Philips' Hue, OSRAM's Lightify and GE's GE-Link. However, the results show that the intelligent lighting system based on ZLL protocol is not satisfactory, and the problem lies in the design of the protocol itself. In recent years, many such as Philips Hue, Samsung Smart-Bulb, Xiaomi Yeelight and Meizu X-Light have emerged on the market. Smart lighting products: Connect light bulbs together via wireless technology for use in smart home, hospitality and industrial applications. However, the Internet of Things security problem that is deeply criticized is becoming a constraint for the further development of intelligent lighting. According to foreign media reports, a research paper from "European bulbs belongs to us: the current security status survey of intelligent lighting systems" from the University of Erlangen-Nuremberg, Germany, shows ZigBee-Light-Link, one of the intelligent lighting communication standards. Hereinafter, ZLL) has a security flaw, and once the protocol is broken, the entire lighting system will be taken over. ZLL is a low-power mesh wireless communication technology developed by the ZigBee Alliance for the lighting industry. It is designed to provide the lighting industry with standards for interoperable and easy-to-use consumer lighting and control products, allowing consumers to access all of their LEDs. Wireless control of devices such as lamps, bulbs, timers, and remote controls. At present, this standard has been used by many enterprises for the connection of intelligent lighting equipment. To a certain extent, ZLL solves the compatibility problems of some intelligent lighting devices, and can realize the rapid addition and deletion of devices, but its security is obviously overestimated. The results of this study by three professionals at the University of Erlangen-Nuremberg are a good illustration. In order to investigate the safety status of the lighting system, three professionals from the University of Erlangen-Nuremberg conducted in-depth research on Philips' Hue, OSRAM's Lightify and GE's GE-Link. However, the results show that the intelligent lighting system based on ZLL protocol is not satisfactory, and the problem lies in the design of the protocol itself, and the attack distance is not a problem. The most popular Hue can be broken at 36 meters. The paper also explains in detail the two methods of breaking the ZLL protocol, using the so-called inter-pan security vulnerability concept and obtaining the master key information to control the ZLL device without the need of key information support. As described in the paper, each certified ZLL supports both traditional and Touchline debugging (small programming: debugging, the process of establishing a new ZLL network or bringing new ZLL devices into the network), the difference is in key management and transmission. Protocol, but the problem is that no key information device can be attacked by means of instant attack, reset attack, denial of service attack, etc., and the key can be obtained by intercepting or extracting the master key. Obviously, no matter which method is adopted, the control of the ZigBee Light Link device can be finally realized. Simply put, the lighting system can be cracked by hackers and then illegally controlled. By then, your smart light bulb will no longer be your smart light bulb. In August last year, security personnel pointed out that because manufacturers want to produce equipment that is easy to use and can work seamlessly with other networked devices, at the same time, it must minimize the cost of equipment, regardless of the need to adopt at the security level. The security considerations have caused ZigBee network security risks, which has attracted wide attention, even though the conclusions emphasize that the ZigBee standard itself has not found any problems. It is not denied that for hardware manufacturers, there are other safe choices for smart lighting communication standards, such as ZigBee, which has been successfully used in home automation. However, the issue of IoT security will not be allowed to be taken lightly. The ZLL is certified to have security flaws. This is definitely a loud alarm.