METHOD AND APPARATUS FOR INPUTTING SECRET INFORMATION

摘要

A method for inputting secret information to a host computer by using a remote terminal which includes detecting means and display means, where the host computer is connected to the remote terminal through a communication network. The method for inputting secret information comprises the steps to be performed by the host computer, of determining the information regarding the position of at least two characters to be displayed on the screen of the display means and transmitting the information to the remote terminal, the steps to be performed by the remote terminal, of receiving the information regarding the position and displaying the at least two characters on the display means in accordance with the received information, displaying a screen pointer on the screen of the display means, moving the screen pointer on the screen in response to the first event detected by the detecting means, and transmitting the information regarding the screen pointer to the host computer in response to the second event detected by the detecting means, and the step performed by the host computer, of receiving and recording the information regarding the screen pointer transmitted from the remote terminal. The host computer can recover value of the character to which the screen pointer pointed at the time of generation of the second event, by using the information regarding the position of at least two characters determined by the host computer and the information regarding the screen pointer transmitted from the remote terminal.