A generalized efficiency mismatch attack to bypass detection-scrambling countermeasure

Autor:	Fatin, M A Ruhul, Sajeed, Shihan
Rok vydání:	2021
Předmět:	Electrical Engineering and Systems Science - Signal Processing Quantum Physics
Druh dokumentu:	Working Paper
Popis:	The ability of an eavesdropper to compromise the security of a quantum communication system by changing the angle of the incoming light is well-known. Randomizing the role of the detectors has been proposed to be an efficient countermeasure to this type of attack. Here we show that the proposed countermeasure can be bypassed if the attack is generalized by including more attack variables. Using the experimental data from existing literature, we show how randomization effectively prevents the initial attack but fails to do so when Eve generalizes her attack strategy. Our result and methodology could be used to security-certify a free-space quantum communication receiver against all types of detector-efficiency-mismatch type attacks. Comment: Submitted to a peer reviewed journal. 7 Pages, 6 Figures, 1 Table
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2101.03969 Zobrazit plný text záznamu View this record from Arxiv