Title:
INFORMATION COLLECTION SYSTEM, INFORMATION MANAGEMENT SYSTEM, INFORMATION COLLECTION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/269861
Kind Code:
A1
Abstract:
This information management system comprises a basic information encryption unit, an additional information demanding unit, an encrypted basic information recording means, an encrypted additional information recording means, an information combination means, and an encrypted combined information recording means. The basic information encryption unit outputs encrypted basic information obtained by encrypting plaintext basic information. The additional information demanding unit demands information about an additional attribute that is an attribute other than a basic attribute. The encrypted basic information recording means records the encrypted basic information. The encrypted additional information recording means acquires and records encrypted additional information obtained by encrypting information about the basic attribute and the information about the additional attribute. The information combination means combines the encrypted basic information and the encrypted additional information on the basis of the information about the basic attribute included in the encrypted additional information, and outputs encrypted combined information. The encrypted combined information recording means records the encrypted combined information.
Inventors:
OTA KENJI (JP)
Application Number:
PCT/JP2021/023955
Publication Date:
December 29, 2022
Filing Date:
June 24, 2021
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G06F21/62
Foreign References:
| US20200342464A1 | 2020-10-29 | |||
| JP2021503117A | 2021-02-04 |
Other References:
KIRIBUCHI, NAOTO ET AL.: "An Efficient Equi-join Algorithm for Secure Computation and Its Implementation toward Secure Comprehensive Analyses of Users' Attribute and History Information", PROCEEDINGS OF COMPUTER SECURITY SYMPOSIUM, 4 October 2016 (2016-10-04), pages 1072 - 1078, XP055741167
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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