USER DEVICE PERFORMING PASSWROD BASED AUTHENTICATION AND PASSWORD REGISTRATION AND AUTHENTICATION METHOD THEREOF

摘要

According to the present invention, a password registration method of a user device using a password-based authentication method comprises the steps of: generating a combination password by adding a salt to an inputted password; generating an expanded password expanded in data length by performing the extended calculation on the combination password; generating authentication information by compressing the expanded password; and storing the authentication information to an authentication database.