USER AUTHENTICATION METHOD USING MULTIPLE ONE-TIME PASSWORDS, WHICH ENABLES A SMART DEVICE REGISTERED AS A MOBILE OTP DEVICE TO GENERATE MULTIPLE OTPS AND OUTPUT THE MULTIPLE OTPS TO A DISPLAY UNIT ONE BY ONE

摘要

PURPOSE: A user authentication method using multiple OTP(One Time Password)s is provided to prevent an OTP from being stolen by others.;CONSTITUTION: A method for authenticating a user using a disposable password, OTP, comprises the steps of: inputting a password in a smart device(S100); decrypting an encrypted seed by the smart device(S200); generating a plurality of OTPs by the smart device(S300); transmitting logon information for one of the OPTs from a user terminal to a security server(S400); generating a plurality of OTPs using the seed and time information(S500) by the security server; and processing user authentication by the security server(S600).;COPYRIGHT KIPO 2013;[Reference numerals] (S10) Step where a smart device receives and stores an encrypted seed transmitted from a security server; (S100) Step where the smart device receives an input password; (S20) Step where the smart device performs visual synchronization with the security server; (S200) Step where the smart device decrypts the encrypted seed; (S300) Step where the smart device generates a plurality of OTPs; (S400) Step where the security server receives one of the OTPs and logon information transmitted from a user terminal; (S500) Step where the security server generates a plurality of OTPs using the seed and visual information; (S600) Step where the security server processes user authentication