Title:
CALCULATION RESULT DISTRIBUTION DEVICE, CALCULATION RESULT PROTECTION SYSTEM, AND CALCULATION RESULT DISTRIBUTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/218514
Kind Code:
A1
Abstract:
A management server (100) includes: a shared key distribution unit (113) that generates a shared key to be shared among a plurality of output destination servers (201), generates, for each output destination server (201), first encrypted data in which the shared key is encrypted using a public key that is paired with a private key held individually by each output destination server (201), and distributes the generated first encryption data to each output destination server (201), thereby allowing each output destination server (201) to decrypt the shared key; and a data output unit (114) that distributes, to each output destination server (201), second encrypted data in which an output value is encrypted using the shared key, thereby allowing each output destination server (201) to decrypt the output value.
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Inventors:
SUGA YURIKA (JP)
YAMASHITA TAKAO (JP)
YAMASHITA TAKAO (JP)
Application Number:
PCT/JP2022/019759
Publication Date:
November 16, 2023
Filing Date:
May 10, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04L9/08
Domestic Patent References:
| WO2021166787A1 | 2021-08-26 |
Foreign References:
| US20180255023A1 | 2018-09-06 | |||
| JP2020177223A | 2020-10-29 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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