Title:
QUANTUM KEY DISTRIBUTION METHOD AND APPARATUS, AND QUANTUM KEY DISTRIBUTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/027375
Kind Code:
A1
Abstract:
Provided in the present application are a quantum key distribution method and apparatus, and a quantum key distribution system, which can improve the secret key rate of quantum key distribution for multiple user terminals. The method can be applied to a quantum key distribution system of a 1:n structure. The method comprises: a sending end receiving a first data sequence from each receiving end among n receiving ends; for any receiving end, the sending end calculating a secret key rate between the sending end and the receiving end according to first data sequences and second data sequences of m receiving ends, wherein the second data sequences comprise some data in a raw key of the sending end, m being an integer greater than 1 and less than or equal to n, and the m receiving ends are comprised in the n receiving ends; and according to the secret key rate, the sending end performing a security enhancement operation on an error-corrected key which is obtained by means of both the sending end and the receiving end executing an error correction operation, so as to obtain a first final key which is shared by the sending end and the receiving end and is used for secure information transmission between the sending end and the receiving end.
Inventors:
LI ZHENGYU (CN)
ZHANG YICHEN (CN)
YU SONG (CN)
ZHANG YICHEN (CN)
YU SONG (CN)
Application Number:
PCT/CN2023/102932
Publication Date:
February 08, 2024
Filing Date:
June 27, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L9/08; H04L1/00
Foreign References:
| CN110011792A | 2019-07-12 | |||
| CN106452758A | 2017-02-22 | |||
| CN108306733A | 2018-07-20 | |||
| US20050036624A1 | 2005-02-17 | |||
| US20160285629A1 | 2016-09-29 |
Other References:
LIU YOUMING; WANG CHAO; HUANG DUAN; HUANG PENG; FENG XIAOYI; PENG JINYE; CAO ZHENGWEN; ZENG GUIHUA: "Study of Synchronous Technology in High-Speed Continuous Variable
Quantum Key Distribution System", ACTA OPTICA SINICA, SHANGHAI KEXUE JISHU CHUBANSHE , SHANGHAI, CN, vol. 35, no. 1, 15 January 2015 (2015-01-15), CN , pages 96 - 105, XP009524129, ISSN: 0253-2239, DOI: 10.3788/AOS201535.0106006
Attorney, Agent or Firm:
BEIJING ZBSD PATENT & TRADEMARK AGENT LTD. (CN)
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