Post-quantum encryption method uses RF parameters for key generation
Up to now, mathematical methods have been used for encryption. But digital wireless communication with sensitive data such as the Internet of Things (IoT) or autonomous driving requires new procedures that are still safe for future technologies such as quantum computers. The project “KIF – Cryptography with integration of radio measurement data” carried out by the University of Applied Sciences St. Pölten is now developing a new approach. Instead of mathematical methods for generating the keys, radio data is used.
“Transport infrastructure is designed to last at least 20 years. Quantum computers with sufficient speeds for practical application are expected in 15 years at the latest. Current procedures for object/data authentication and data integrity checking can then no longer be used for security reasons. That is why we are already looking for a quantum computer-resistant method based on physical methods that is still secure,” says Ernst Piller, head of the project and the Institute for IT Security Research at St. Pölten University of Applied Sciences.
The basis of the new method is the generation and distribution of cryptographic keys based on the measurement of radio channel characteristics of a radio transmission: Radio signals as well as reflective echoes of the signal and their delay are measured at the transmitters and receivers of the partners involved. The resulting pattern of main signal and delayed echoes is random, unique and matches only for the two partners involved. “This effect can be used to generate random data that can be used to generate the key and that cannot be intercepted by potential attackers,” explains Piller.
Although similar approaches already exist, the St. Pölten University of Applied Sciences project takes into account some specific factors that apply to autonomous driving and make safe communication more difficult: high vehicle speed, rapidly changing radio partners (vehicles), high number of vehicles, usually very short communication times and RF interferences. The aim is a cost-effective product for practical use.
Partners in the project are Cryptas it-Security GmbH, several Austrian federal ministries and the infrastructure company ASFINAG.
More information: https://www.fhstp.ac.at/en/research
Read also:
Infineon preparing post-quantum cryptography for cars
Intel joins automotive secure computing research
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
