System and Method for authentication security using of user terminal

摘要

PURPOSE: A certification security system and an inducing method thereof are provided to prevent a password from being leaked by varying the key arrangement of a key pad when the same password is used. CONSTITUTION: A user terminal(100) photographs the password input screen of a service providing device(300). The user terminal arranges the keypad of the password input screen according to key pad arrangement information from a certification server(200) for displaying on a screen. The certification server transmits the key pad arrangement information to the service providing device and the user terminal. The certification server uses a random number generator for varying the key value of a password input keypad. The service providing device implements user certification by comparing a stored password with the password key value inputted with the keypad. [Reference numerals] (100) User terminal; (200) Certification server; (300) Service providing device; (AA) Communication network;