Title:
SECRET CALCULATION METHOD, SECRET CALCULATION SYSTEM, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/166277
Kind Code:
A1
Abstract:
A secret calculation method according to one embodiment of this invention has an acquisition step for acquiring multiple pieces of encrypted information to be analyzed that are multiple pieces of encrypted information and pertain to an event to be analyzed, and an analysis step for analyzing, on the basis of the multiple pieces of encrypted information to be analyzed, the event without decrypting the multiple pieces of encrypted information to be analyzed, wherein an encryption key for the encrypted information to be analyzed is a unitary matrix and at least one of the respective encryption keys for the multiple pieces of encrypted information to be analyzed is different from other encryption keys.
Inventors:
BANDO YUKIHIRO (JP)
NAKACHI TAKAYUKI (JP)
NAKACHI TAKAYUKI (JP)
Application Number:
PCT/JP2020/024305
Publication Date:
August 26, 2021
Filing Date:
June 22, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G09C1/00; H04L9/14
Foreign References:
| JP2019207384A | 2019-12-05 | |||
| JP2006513677A | 2006-04-20 |
Other References:
ZOU HUI, HASTIE TREVOR: "Regularization and variable selection via the elastic net", JOURNAL OF THE ROYAL STATISTICAL SOCIETY - SERIES B: STATISTICAL METHODOLOGY, vol. 67, no. 2, 1 April 2005 (2005-04-01), pages 301 - 320, XP055849418, ISSN: 1369-7412, DOI: 10.1111/j.1467-9868.2005.00503.x
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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