公开(公告)号：US12284296B2

公开(公告)日：2025-04-22

申请号：US18063926

申请日：2022-12-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Min Kyo In ,  Won Suk Lee ,  Suwook Ha

IPC: H04L9/00

Abstract: Provided is a method of managing a data history and a device performing the method. The method of managing the data history includes generating second data based on first data, calculating a second hash value for the second data based on the second data and a first hash value for the first data, and storing the second hash value on a blockchain network to verify the second data, and a history of the first data is verified using the first hash value stored on the blockchain network.

公开(公告)号：US11630912B2

公开(公告)日：2023-04-18

申请号：US17205959

申请日：2021-03-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Min Kyo In ,  Won Suk Lee

IPC: G06F21/62 ,  G06F21/60 ,  H04L9/30 ,  H04L9/14

Abstract: Provided are a system and a method for controlling transaction data access. A system for controlling transaction data access comprising: a transaction management module configured to determine a plurality of security levels for transaction data; a data encryption module configured to perform multiple level encrypting the transaction data according to the plurality of security levels; and a data storage module configured to store the encrypted data as a block, and provide the block to a peer-to-peer (P2P) network.