On KLJN-based secure key distribution in vehicular communication networks
This work addresses secure key exchange for vehicular networks, but it appears incremental as it builds on a prior KLJN-based system.
The paper tackles secure key distribution in vehicular communication networks by proposing a lane-by-lane KLJN key donation system using roadside equipment, and it provides a method to compute key lifetime based on car density, establishing an upper limit for key durability.
In a former paper [Fluct. Noise Lett., 13 (2014) 1450020] we introduced a vehicular communication system with unconditionally secure key exchange based on the Kirchhoff-Law-Johnson-Noise (KLJN) key distribution scheme. In this paper, we address the secure KLJN key donation to vehicles. This KLJN key donation solution is performed lane-by-lane by using roadside key provider equipment embedded in the pavement. A method to compute the lifetime of the KLJN key is also given. This key lifetime depends on the car density and gives an upper limit of the lifetime of the KLJN key for vehicular communication networks.