METHOD FOR INPUT INFORMATION SECURITY

摘要

The present invention relates to a method for input information security wherein risk of unauthorized exposure is reduced by securing input key information. The method comprises a personal information input preparation step wherein personal information is written onto input blocks (13a, 13b, 13c) on web page (13) of installed security controller (120), and is transmitted from server (200) and output to client terminal (100); a virtual keyboard formation step wherein, upon outputting said input blocks (13a, 13b, 13c), security controller (120) displays two or more number rows randomly and forms a number dial (13e) such that the numbers displayed on input blocks (13a, 13b, 13c) are changed according to the manipulation information of direction key (15) equipped with number control key (15a) and location control key (15b), but number dial (13e) has its number of the number row selected based on manipulation of number control key (15a) changed, and a number row is selected based on manipulation of location control key (15b); a direction key manipulation step wherein said direction key (15) is manipulated to change and select number row and number; a key manipulation information verification step wherein said security controller (120) verifies direction key (15) manipulation information; and a personal information verification step wherein, at said client terminal (100) or server (200), manipulation information is applied based on the number that has been initially and randomly displayed on input blocks (13a, 13b, 13c) to verify the personal information that has been input into client terminal (100), and server (200) proceeds according to the verified personal information.