Frequency Side Channel Attack in Twin-Field QKD

The Frequency Side Channel Attack exploits imperfections in intensity modulation within Twin-Field Quantum Key Distribution (TF-QKD) systems, leading to frequency-based distinguishability between signal and decoy states. This vulnerability allows an eavesdropper to identify key information by observing frequency shifts induced by the modulation process.


Literature

[Lu2021] Y. Lu, M. Jiang, Y. Wang, X. Zhang, F. Liu, C. Zhou, H. Li, and W. Bao. "Practical analysis of sending or not-sending twin-feld quantum key distribution with frequency side channels" In: Appl. Sci. 11(20), 9560. (2021) 10.3390/app11209560.

QID: A-0088
Tier: T0
Type: Quantum
Tactic: Execution
Created: 2024-04-16
Updated: 2024-08-20

Technique → Countermeasures

List of countermeasures applicable to this technique.

Items: 2
Description Countermeasure

    
Triple Intensity Modulation for Side Channel Elimination

Consider this attack in your security proof.