Authentication device, system and method

An authentication system comprising:

• a determination device including a first memory and a first processor configured to:
• when a registration request including authentication information to be used during authentication is received from a terminal device, generate registration information using the authentication information and key information and transmits the registration information, and
• when the result of comparison between the registration information and input information to be handled as the target of the authentication is received, generate the result of the authentication, which is acquired by applying the key information to the result of comparison, and transmit the authentication result to the terminal device;
• and
• a management device including a second memory and a second processor configured to:
• when the registration information is received from the determination device, store the registration information in the second memory, and
• when an authentication request including the input information is received from the terminal device, compute the result of comparison between the input information and the registration information and transmit the comparison result to the determination device.

An authentication method, comprising:

• receiving a registration request including authentication information to be used during authentication from the terminal device;
• generating registration information using the authentication information and key information;
• storing the registration information in a memory;
• receiving an authentication request including input information to be handled as the target of the authentication from the terminal device;
• generating, by a processor, a result of the authentication based on the input information, the registration information, and the key information;
• and
• transmitting the result of the authentication to the terminal device.