| 摘要 |
Disclosed are an authentication device and method, and a computer program and a recording medium applied thereto. An authentication device according to the present invention comprises: a registration request unit for, when screen information displayed on a specific screen of a user device is changed by a user's input or changed by a factor other than the user's input, encrypting the changed screen information and requesting registration of the encrypted changed screen information as authentication information; an authentication confirmation unit for receiving an authentication confirmation request from a communication network connected with the user device; and an authentication performing unit for extracting the screen information displayed on the specific screen according to a determination on whether to grant authentication for the authentication confirmation request, encrypting the extracted screen information, and then transmitting the encrypted authentication screen information to the communication network as a response to the authentication confirmation request. |
