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

Claim 14:
15. The method of claim 12, wherein the user-authentication and terminal-authentication process comprises:
a service use request step in which the user terminal accesses the service provider server and transmits service use request information including the public key;
a personal information input request step in which the service provider server transmits, to the user terminal, personal information input request information including required personal information field information and the service provider information including service provider identification information, an encryption key, and a reply address;
a user-authentication request step in which the user terminal acquires the user-authentication information when the personal information input request information is received, and transmits the acquired user-authentication information and the terminal identification information to the blockchain alternative authentication server to request user authentication; and
a user-authentication and terminal-authentication performance step in which the blockchain alternative authentication server performs user authentication and terminal authentication with the user-authentication information and the terminal identification information.