Message Time of Arrival Codes - A Fundamental Primitive for Secure Distance Measurement

Explore the fundamental principles of secure distance measurement through Message Time of Arrival Codes (MTACs) in this 17-minute IEEE conference talk. Delve into the critical importance of secure Time-of-Arrival (ToA) measurement for applications like contactless payments, passive-keyless entry systems, and navigation. Examine the formal definition of security requirements for physical-layer measures protecting ToA measurement systems against attacks. Gain insights into existing MTACs, including those used in distance-bounding protocols and secure distance measurement standards. Discover basic principles for safeguarding ToA measurement systems against previously unaddressed attacks. Analyze the systematic exploration of tradeoffs between security and performance in signal modulation techniques enabling ToA measurements. Learn about proximity verification, distance-reducing attackers, and solutions such as short symbols and physical-layer distortion tests.

Proximity Verification
Distance-reducing attacker
We know how to design the protocols
This work: Message Time of Arrival Codes
Secure Time-of-Flight measurement
One solution: Short symbols
Another solution: PHY distortion test
Physical-layer distortion Test
Performance-security tradeoff
Conclusion