Time Synchronization Protocol for the KLJN Secure Key Exchange Scheme
Abstract
The information theoretically secure Kirchhoff-law-Johnson-noise (KLJN) key exchange scheme, similarly to quantum key distribution (QKD), is also potentially vulnerable against clock attacks, where Eve takes over the control of clock synchronization in the channel. This short note aims to introduce a time synchronization protocol scheme for Alice and Bob, which is resistant against arbitrary time delay attacks, both symmetric and asymmetric ones. We propose and explore various ways of clock synchronization for the KLJN system and propose an ultimate protocol that preserves time and hardware integrity under arbitrary attacks.
- Publication:
-
Fluctuation and Noise Letters
- Pub Date:
- 2022
- DOI:
- 10.1142/S0219477522500468
- arXiv:
- arXiv:2207.05675
- Bibcode:
- 2022FNL....2150046K
- Keywords:
-
- Classical information;
- clock synchronization;
- preserving system and time integrity;
- secure key exchange;
- unconditional security;
- Computer Science - Cryptography and Security;
- Quantum Physics
- E-Print:
- In press at Fluctuation and Noise Letters. Coming out in the October 2022 issue