- Patent Title: Control server for sharing data using distributed ledger, data sharing system with distributed ledger, and control program for sharing data with distributed ledger
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Application No.: US17785037Application Date: 2019-12-20
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Publication No.: US12248591B2Publication Date: 2025-03-11
- Inventor: Tatsuro Ishida , Shigenori Ohashi , Shigeru Fujimura , Atsushi Nakadaira , Masayoshi Chikada
- Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- Current Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- Current Assignee Address: JP Tokyo
- International Application: PCT/JP2019/050136 WO 20191220
- International Announcement: WO2021/124558 WO 20210624
- Main IPC: G06F21/62
- IPC: G06F21/62 ; G06F16/176 ; G06F16/18 ; H04L9/00 ; H04L9/32 ; H04L9/40
Abstract:
Upon receiving a usage request that includes a file identifier and a version identifier from a user terminal 20, a control server 10 transmits a file request that is based on the usage request to a file management system, and transmits a permission information request that is based on the usage request to a distributed ledger system. Upon receiving the file request, the file management system acquires the file that corresponds to the combination of the file identifier and the version identifier and transmits the file to the control server 10. Upon receiving the permission information request, the distributed ledger system acquires permission information that corresponds to the combination of the file identifier and the version identifier from a distributed ledger, and transmits the permission information to the control server 10. The control server 10 transmits the file to the user terminal 20 if the user of the user terminal has viewing permission based on the permission information.
Public/Granted literature
- US20230004665A1 CONTROL SERVER, DATA SHARING SYSTEM, AND CONTROL PROGRAM Public/Granted day:2023-01-05
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