Title:
METHOD AND APPARATUS FOR DETECTING WIRETAPPER IN PLUG-AND-PLAY QKD SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/131384
Kind Code:
A1
Abstract:
Provided in the present specification is a method by which an apparatus estimates a quantum bit error rate (QBER) in a quantum cryptography communication system, the method comprising: receiving a random access (RA) preamble from another apparatus; transmitting a random access response (RAR) to the other apparatus in response to the RA preamble; performing a radio resource control (RRC) connection procedure with the other apparatus; receiving data from the other apparatus; and decrypting the data on the basis of key information, wherein the apparatus receives, from the other apparatus, through a quantum channel, a pulse in which bit information is stored, the pulse in which bit information is stored is a pulse to which rotating angle shift or polarization shift is applied, the apparatus generates the key information on the basis of the pulse in which bit information is stored, the apparatus estimates the QBER on the basis of the key information, and the apparatus determines that the key information is valid on the basis of the value of the estimated QBER being less than a critical value.
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Inventors:
KIM JAYEONG (KR)
LEE SANGRIM (KR)
AHN BYUNGKYU (KR)
LEE HOJAE (KR)
KIM SUNGJIN (KR)
LEE SANGRIM (KR)
AHN BYUNGKYU (KR)
LEE HOJAE (KR)
KIM SUNGJIN (KR)
Application Number:
PCT/KR2020/018266
Publication Date:
June 23, 2022
Filing Date:
December 14, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04L9/08; H04B10/532; H04B10/70; H04L9/00
Foreign References:
| KR102026952B1 | 2019-09-30 | |||
| US20180048466A1 | 2018-02-15 |
Other References:
FEIHU XU; XIONGFENG MA. QIANG ZHANG; HOI-KWONG LO; JIAN-WEI PAN: "Quantum cryptography with realistic devices", ARXIV.ORG, 21 March 2019 (2019-03-21), 201 Olin Library Cornell University Ithaca, NY 14853 , XP081156389
SUN SHI-HAI, JIANG MU-SHENG, LIANG LIN-MEI: "Passive Faraday-mirror attack in a practical two-way quantum-key-distribution system", PHYSICAL REVIEW A (ATOMIC, MOLECULAR, AND OPTICAL PHYSICS), vol. 83, no. 6, 4 March 2012 (2012-03-04), USA , XP055943462, ISSN: 1050-2947, DOI: 10.1103/PhysRevA.83.062331
WEI-LONG WANG; MING GAO; ZHI MA: "Effect of imperfect Faraday mirrors on the security of a Faraday;Michelson quantum cryptography system", JOURNAL OF PHYSICS A: MATHEMATICAL AND THEORETICAL, vol. 46, no. 45, 24 October 2013 (2013-10-24), Bristol, GB, pages 455301, XP020253220, ISSN: 1751-8121, DOI: 10.1088/1751-8113/46/45/455301
SUN SHI-HAI, JIANG MU-SHENG, LIANG LIN-MEI: "Passive Faraday-mirror attack in a practical two-way quantum-key-distribution system", PHYSICAL REVIEW A (ATOMIC, MOLECULAR, AND OPTICAL PHYSICS), vol. 83, no. 6, 4 March 2012 (2012-03-04), USA , XP055943462, ISSN: 1050-2947, DOI: 10.1103/PhysRevA.83.062331
WEI-LONG WANG; MING GAO; ZHI MA: "Effect of imperfect Faraday mirrors on the security of a Faraday;Michelson quantum cryptography system", JOURNAL OF PHYSICS A: MATHEMATICAL AND THEORETICAL, vol. 46, no. 45, 24 October 2013 (2013-10-24), Bristol, GB, pages 455301, XP020253220, ISSN: 1751-8121, DOI: 10.1088/1751-8113/46/45/455301
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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