US 12,284,296 B2
Method of managing data history and device performing the same
Min Kyo In, Daejeon (KR); Won Suk Lee, Daejeon (KR); and Suwook Ha, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Dec. 9, 2022, as Appl. No. 18/063,926.
Claims priority of application No. 10-2022-0021533 (KR), filed on Feb. 18, 2022.
Prior Publication US 2023/0269104 A1, Aug. 24, 2023
Int. Cl. H04L 9/00 (2022.01)
CPC H04L 9/50 (2022.05) 13 Claims
OG exemplary drawing
 
1. A method of managing a data history, the method comprising:
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,
wherein a history of the first data is verified using the first hash value stored on the blockchain network,
wherein the calculating comprises:
calculating the second hash value by inputting the first hash value, a data processing function, the second data, and information about the second data into a hash function,
wherein the data processing function is used to generate the second data from the first data.