AUTHENTICATION SYSTEM, AUTHENTICATION DEVICE, AUTHENTICATION METHOD AND AUTHENTICATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To secure higher security by defending from an attack of a man in the middle interposed on a network route.SOLUTION: A job device 4 includes: a transaction ID generation means 42 for generating a transaction ID based on transaction data received from a second terminal 2 and transmitting it to the second terminal 2; an authentication request means 43 for transmitting an authentication request to the authentication device 3; and a job processing means 44 for performing transaction processing according to the transaction data when receiving the result of an authentication success from the authentication device 3. The authentication device 3 includes: a generation means 31 for receiving a one-time password generation request including the transaction ID from a first terminal 1, generating a one-time password, transmitting it to the first terminal 1 and storing it in an authentication storage means 35 corresponding to the transaction ID; and an authentication means 33 for authenticating whether or not the one-time password and transaction ID of the authentication request received from the job device 4 match with the one-time password and the transaction ID stored in the authentication storage means 35, and transmitting the authentication result to the job device 4.