Title:
DEVICE AND METHOD FOR PERFORMING QUANTUM STATE MODULATION ON BASIS OF QUANTUM AUTHENTICATION IN QUANTUM COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/101469
Kind Code:
A1
Abstract:
According to various embodiments disclosed herein, an operation method of a first device in a quantum communication system comprises the steps of: transmitting, to a second device, information about M, which is the modulation order of a symmetric M-order quantum state modulation (symmetric M-QSM), and information about one encoding method selected from among a plurality of authentication encoding methods; generating information about a first quantum state on the basis of the symmetric M-order quantum state modulation by using a first authentication code and a first key shared in advance with the second device; transmitting, to the second device, a message including a quantum authentication header (QA header) based on a first quantum state; receiving, from the second device, a feedback message including the second authentication code based on the quantum authentication header; measuring a quantum bit error rate (QBER) on the basis of a comparison between the first authentication code and the second authentication code; determining, on the basis of a comparison between the QBER measurement result and the predetermined threshold, whether the second device is authenticated; and transmitting an acknowledgement (ACK) or non-acknowledgement (NACK) message to the second device on the basis of whether the second device has been authenticated.
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Inventors:
LEE HOJAE (KR)
KIM JAYEONG (KR)
AHN BYUNGKYU (KR)
LEE SANGRIM (KR)
KIM JAYEONG (KR)
AHN BYUNGKYU (KR)
LEE SANGRIM (KR)
Application Number:
PCT/KR2022/017574
Publication Date:
May 16, 2024
Filing Date:
November 09, 2022
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04L9/08; G06N10/40; G06N10/70; H04L9/32
Foreign References:
| KR20200051357A | 2020-05-13 | |||
| KR20190091838A | 2019-08-07 | |||
| US20220271847A1 | 2022-08-25 | |||
| US20210135861A1 | 2021-05-06 |
Other References:
LIU QIANG, HUANG YINMING; DU YONGQIANG; ZHAO ZHENGENG; GENG MINMING; ZHANG ZHENRONG; WEI KEJIN: "Advances in Chip-Based Quantum Key Distribution", ENTROPY, MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL, vol. 24, no. 10, CH , pages 1 - 21, XP093170051, ISSN: 1099-4300, DOI: 10.3390/e24101334
Attorney, Agent or Firm:
ROYAL PATENT & LAW OFFICE (KR)
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