METHOD FOR PROVIDING SIMPLIFIED ACCOUNT REGISTRATION SERVICE AND USER AUTHENTICATION SERVICE, AND AUTHENTICATION SERVER USING SAME

摘要

According to the present invention, provided is a method for logging in by proxy via PKI-based authentication for a login request of a user by using a smart contract and a blockchain database. According to the method according to the present invention, when information associated with a request for logging in by proxy via an authentication app executed by a user terminal is acquired from a service-providing app on the user terminal, a service-providing server transfers authentication request response information to the service-providing app, and when server challenge request information is acquired after an authentication redirection request of the service-providing app is transferred to the authentication app, the service-providing server transfers server challenge request response information to the authentication app, thereby supporting the determining of whether certificates of the server and the app are valid, and if the certificates are valid, the service-providing server transfers a preset access token to the service-providing app, thereby supporting so as to enable the service-providing app to use the service, and thus processing the login.