Patent ID: 11943362
Assignee: nan
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. The method of claim 18, wherein the update process further comprises:
a one-time private key request step in which to update the detected personal information transaction statement matched to a user public key, the service-providing node server that has requested the personal information transmits, to the user terminal, one-time private key issue request information for making a request to the user terminal for the one-time private key one more time in order to decrypt the personal information transaction statement encrypted with the user public key;
a one-time public key provision step in which in response to a one-time private key issue request from the service-providing node server, when the one-time private key issue request information is received from the user terminal, the blockchain alternative authentication server generates the first one-time private key and the second one-time private key that are a one-time private key pair, provides the first one-time private key to the service-providing node server, and transmits the second one-time private key to the service-providing node server that has provided the personal information; and
an update step in which the service-providing node server that has provided the personal information is configured to
perform pair authentication on the received first one-time private key and the received second one-time private key,
decrypt the personal information transaction statement,
apply personal information change details included in the personal information submission document to an original text for change processing and storage, and
generate a detailed statement of use to provide the same to the blockchain alternative authentication server.