Title:
KEY EXCHANGE SYSTEM, SERVER, METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/026393
Kind Code:
A1
Abstract:
A key exchange system according to an embodiment includes: a key generation device that uses a quantum key distribution or a post-quantum key exchange to generate a key; a network device that uses the key to perform a cipher communication with another network device; and an intermediate server that is located between the key generation device and the network device. The intermediate server comprises: a status monitoring unit that transmits a request for status monitoring to the key generation device at predetermined time intervals; a notification unit that, upon receipt of a response to the request, provides, to the network device, a push notification of key information included in the response; and a key exchange unit that starts a key exchange between the network device and the key generation device in response to a request from the network device having received the push notification of the key information.
Inventors:
OKUDA TETSUYA (JP)
NAKABAYASHI MISATO (JP)
CHIDA KOJI (JP)
TANAKA YURI (JP)
YAMAMURA KAZUKI (JP)
CHIKARA SAKAE (JP)
MORIMURA KAZUO (JP)
NAKABAYASHI MISATO (JP)
CHIDA KOJI (JP)
TANAKA YURI (JP)
YAMAMURA KAZUKI (JP)
CHIKARA SAKAE (JP)
MORIMURA KAZUO (JP)
Application Number:
PCT/JP2021/031132
Publication Date:
March 02, 2023
Filing Date:
August 25, 2021
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04L9/08; H04L9/12
Foreign References:
| JP2020501413A | 2020-01-16 | |||
| JP2015179974A | 2015-10-08 | |||
| US7515716B1 | 2009-04-07 | |||
| US20060062392A1 | 2006-03-23 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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