English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The article is focused on research of an attack on the quantum keydistribution system and proposes a countermeasure method. Particularlynoteworthy is that this is not a classic attack on a quantum protocol. Wedescribe an attack on the process of calibration. Results of the research showthat quantum key distribution systems have vulnerabilities not only in theprotocols, but also in other vital system components. The described type ofattack does not affect the cryptographic strength of the received keys and doesnot point to the vulnerability of the quantum key distribution protocol. Wealso propose a method for autocompensating optical communication systemdevelopment, which protects synchronization from unauthorized access. Theproposed method is based on the use of sync pulses attenuated to a photon levelin the process of detecting a time interval with a signal. The paper presentsthe results of experimental studies that show the discrepancies between thetheoretical and real parameters of the system. The obtained data allow thelength of the quantum channel to be calculated with high accuracy.

Nonclassical Attack on a Quantum KeyDistribution System