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Patent Searching and Data


Title:
INFORMATION TRANSACTION METHOD, INFORMATION USER TERMINAL, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/230831
Kind Code:
A1
Abstract:
This information transaction method includes an information provision phase in which an information provider provides information requested by an information user, said information being provided via a distributed ledger of an authentication server device. In the information provision phase an information provider terminal (100) acquires first transaction data that has been written in a distributed ledger, said first transaction data including an encryption key generated by an information user terminal (200), an information user ID, an information provider ID, and a second information listing that indicates first information requested by an information user and disclosed in a first information listing published in a distributed ledger by an information provider (S303). The information provider terminal (100) generates first encrypted information wherein first information specified by the second information listing is encrypted using an encryption key (S305), generates second transaction data that includes the information provider ID, the information user ID, and the first encrypted information (S306), and transmits the second transaction data to an authentication server device (320) (S307).

Inventors:
NISHIDA NAOHISA (JP)
UNAGAMI YUJI
Application Number:
PCT/JP2020/019169
Publication Date:
November 19, 2020
Filing Date:
May 13, 2020
Export Citation:
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Assignee:
PANASONIC IP CORP AMERICA (US)
International Classes:
G06Q20/02; G06F21/62; G06F21/64
Domestic Patent References:
WO2018201009A12018-11-01
Foreign References:
JP2017207979A2017-11-24
JP2019053427A2019-04-04
JP3222165U2019-07-18
Other References:
SATOSHI NAKAMOTO, BITCOIN: A PEER-TO-PEER ELECTRONIC CASH SYSTEM, Retrieved from the Internet
RONALD LINN RIVEST ET AL., A METHOD FOR OBTAINING DIGITAL SIGNATURES AND PUBLIC-KEY CRYPTOSYSTEMS, Retrieved from the Internet
NEAL KOBLITZ, ELLIPTIC CURVE CRYPTOSYSTEMS, Retrieved from the Internet
See also references of EP 3971810A4
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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