S. N. Molotkov, “On the side quantum–classical binary channel of information leakage with Gaussian noise”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2020, Volume 111, Issue 9,Pages <nobr>608

This article is cited in 3 papers

QUANTUM INFORMATION SCIENCE

On the side quantum–classical binary channel of information leakage with Gaussian noise

S. N. Molotkov^abc

^a Academy of Cryptography of the Russian Federation, Moscow, 121552 Russia
^b Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432 Russia
^c Center of Quantum Technologies, Moscow State University, Moscow, 119899 Russia

Abstract: The detection of side radiation of transmitting devices is an additional source of information on distributed keys. In contrast to the attack on a quantum communication channel, the detection of side radiation does not lead to perturbation of information states and errors on the receiving side. To ensure the cryptographic security of quantum cryptography systems on the receiving side, it is fundamentally necessary to estimate the amount of information leakage through the side channel. A simple quantum derivation of amount of information leakage through the side quantum channel with Gaussian noise has been reported. The proposed method is applicable not only to the channel with Gaussian noise but also to other types of side channels of information leakage.

Received: 04.04.2020
Revised: 06.04.2020
Accepted: 06.04.2020

DOI: 10.31857/S1234567820090062