Relay attacks
Relay attacks involve exploiting passive entry systems to gain unauthorized access to vehicles. These attacks target the wireless communication between the car key and the vehicle. By intercepting and amplifying the key’s signal using specialized devices, thieves can fool the vehicle into thinking the key is in close proximity, enabling them to unlock and start the car without physical contact.
A game-changer in preventing relay attacks
Ultra-wideband (UWB) technology operates by utilizing a broad spectrum of radio frequencies. Its unique characteristics set it apart from other wireless communication technologies, making it ideal for secure and precise short-range communication and thereby preventing relay attacks.
Accurate distance measurement between the car and the key is enabled by combining accurate time-of-flight (ToF) measurement and cryptographic protection of exchanged communication. This distance-bounding mechanism prevents relay attacks by ensuring that the key is physically present near the vehicle.
Bosch has been at the forefront of developing innovative solutions to prevent relay attacks. We have introduced the following advancements in UWB-based security systems:
UWB-based digital key system
Bosch’s UWB-based digital key system replaces the traditional physical key with a digital key stored securely on a mobile device. This system establishes a secure and encrypted communication channel between the car and the digital key, ensuring that only authorized devices can access and control the vehicle.
Distance-bounding mechanism
To counter relay attacks, Bosch’s solution incorporates a distance-bounding mechanism. This mechanism precisely measures the distance between the car and the digital key using UWB technology. If the distance exceeds the predetermined threshold, the system denies access, preventing unauthorized individuals from exploiting relay vulnerabilities.
Enhanced security features
Bosch’s UWB-based security systems include additional features to enhance vehicle security and prevent relay attacks. These features involve continuous monitoring of the communication channel to detect any suspicious activity or signal manipulations. In case of detected anomalies, the system can alert the vehicle owner or trigger security measures to prevent unauthorized access.
The future of UWB technology and relay attacks
As UWB technology continues to evolve, there is potential for widespread adoption in the automotive industry. Car manufacturers are collaborating with technology companies like Bosch to integrate UWB-based security systems into their vehicles. This collaboration aims to enhance overall vehicle safety and protect against relay attacks, giving car owners greater confidence in the security of their vehicles.
Relay attacks pose a significant threat to keyless entry vehicles, but with the advent of UWB technology, companies like Bosch are developing effective countermeasures. By leveraging UWB-based digital key systems, distance-bounding mechanisms, and enhanced security features, Bosch is revolutionizing the automotive industry’s approach to securing vehicles against relay attacks. As UWB technology advances and gains wider adoption, the future holds increased difficulty for vehicle theft, providing car owners with the peace of mind they deserve. Trust in the power of UWB technology and the dedication of companies like Bosch to keep your vehicle safe and secure.
