Countermeasure against tailored bright illumination attack for DPS-QKD
Toshimori Honjo, Mikio Fujiwara, Kaoru Shimizu, Kiyoshi Tamaki,, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Zhen Wang, and Masahide, Sasaki
TL;DR
This paper introduces a countermeasure for the tailored bright illumination attack in DPS-QKD by monitoring coincidence detection rates with superconducting nanowire single photon detectors to enhance security.
Contribution
The paper presents a novel detection scheme using coincidence monitoring at SSPDs to identify and prevent the tailored bright illumination attack in DPS-QKD.
Findings
Effective detection of the attack demonstrated
Enhanced security in DPS-QKD protocols
Potential for real-time attack mitigation
Abstract
We propose a countermeasure against the so-call tailored bright illumination attacl dor Differential-Phase-Shift QKD (DPS-QKD). By Monitoring a rate of coincidence detection at a pair of superconducting nanowire single photon detectors (SSPDs) which is connected at each of the output ports of Bob's Mach-Zehnder interferometer, Alice and Bob can detect and defeat this kind of attack.
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