Title:
DATA MANAGEMENT DEVICE AND DATA MANAGEMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2024/089775
Kind Code:
A1
Abstract:
When a second operation is performed to update component data (D12) to component data (D13) and update component data (D21) to component data (D22) at the same time, then a control device (21) of a client server (2) creates a record (RA3) including a hash value of the component data (D13) in a first evidence chain (distributed ledger 51), and creates a record (RB2) including a hash value of the component data (D22) in a second evidence chain (distributed ledger 52). The control device (21) generates a terminal hash value that includes a record hash value of the record (RA3) and a record hash value of the record (RB2), and obtains a timestamp token for the terminal hash value.
Inventors:
YAMAMURO NAOKI (JP)
FUKATSU WATARU (JP)
FUKATSU WATARU (JP)
Application Number:
PCT/JP2022/039771
Publication Date:
May 02, 2024
Filing Date:
October 25, 2022
Export Citation:
Assignee:
TOYOTA JIDOSHA KK (JP)
SCALAR INC (JP)
SCALAR INC (JP)
International Classes:
H04L9/32; G06F21/64
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF: