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

Claim 17:
18. The method of claim 17, wherein the update process comprises:
a monitoring step in which the service-providing node server monitors whether the personal information including the sensitive personal information to be changed as the service for the user of the user terminal is provided is generated;
an update agreement inquiry step in which the service-providing node server transmits change-details-informing and agreement inquiry information to the user terminal in order to inform of a record of details of change of the personal information including the sensitive personal information to be changed and to inquire about agreement on update storage, thereby inquiring about agreement on update;
a personal information submission document generation step in which when an update agreement signal is received from the user terminal, the service-providing node server generates the personal information submission document including the public key and the electronic signature of the service-providing node server with respect to the personal information including the sensitive personal information to be changed;
a first one-time private key provision step in which when an agreement signal is received from the user terminal, the service-providing node server makes a request to the user terminal for the one-time private key, receives the first one-time private key from the user terminal, and transmits the first one-time private key to the service-providing node server that has provided the personal information; and
an update request step in which the service-providing node server encrypts the generated personal information submission document with an encryption key of the service-providing node server that has provided the personal information, and transmits personal information change request information with the first one-time private key to a reply address of the service-providing node server that has provided the personal information.