Title:
秘密鍵共有方法及びシステム
Document Type and Number:
Japanese Patent JP7388700
Kind Code:
B2
Abstract:
To prevent performance deterioration due to atmospheric turbulence and a weather condition and furthermore to improve the transmission performance of secret communication in sharing a secret key in optical space communication.SOLUTION: A transmitter 2 superimposes a random number bit string on a laser beam and transmits the laser beam, a receiver 4 that has received the laser beam demolishes the random number bit string superposed on the laser beam, determines an exclusion target bit from the demodulated random number bit string on the basis of the time-series tendency in the reception intensity of the laser beam, excludes the exclusion target bit determined by the receiver 4 from the demodulated random number bit string, transmits exclusion target bit information regarding the exclusion target bit to the transmitter 2, the transmitter 2 excludes the exclusion target bit from the random number bit string on the basis of the exclusion target bit information received from the receiver 4, and a private key for sharing is generated by performing key distillation between the transmitter 2 and the receiver 4.SELECTED DRAWING: Figure 4
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| WO/2023/026393 | KEY EXCHANGE SYSTEM, SERVER, METHOD, AND PROGRAM |
| WO/2000/011537 | IMPROVEMENTS IN AND RELATING TO DATA COMMUNICATION |
| WO/2009/100665 | METHOD, APPARATUS AND SYSTEM FOR CONFIGURING KEY |
Inventors:
Hiroyuki Endo
Masahide Sasaki
Masahide Sasaki
Application Number:
JP2019235286A
Publication Date:
November 29, 2023
Filing Date:
December 25, 2019
Export Citation:
Assignee:
National Institute of Information and Communications Technology
International Classes:
H04L9/08; H04B10/112; H04B10/118; H04B10/85; H04L9/12
Domestic Patent References:
| JP2008066981A | ||||
| JP2017175320A |
Foreign References:
| WO2018047716A1 |
Attorney, Agent or Firm:
Yasuhiko Moto
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