System and method for one time password-based authentication

A method for OTP-based authentication, the method comprising:

• receiving, by an authentication server from a client, an authentication request;
• obtaining, by the authentication server, time information according to statistical information about authentication success of the client for each of a plurality of time intervals within a range of time;
• generating, by the authentication server, a server-side OTP based on stored authentication information and the obtained time information;
• authenticating, by the authentication server, the client by comparing a client-side OTP included in the authentication request with the generated server-side OTP;
• and
• transmitting, by the authentication server to the client, a result of the authentication based on the authenticating.

A non-transitory computer readable recording medium storing a computer program, which executes the following operations comprising:

• obtaining time information within a range of time based on statistical information about authentication success of a client for each of a plurality of time intervals within the range of time;
• generating a server-side OTP based on stored authentication information and the obtained time information;
• and
• authenticating the client by comparing a client-side OTP included in an authentication request received from the client with the generated server-side OTP.