| 摘要 |
PROBLEM TO BE SOLVED: To provide disposable password generation algorithm that can introduce even one for a simple terminal by reducing a risk that a password is glanced at by an illegal user and that the password is stolen when the password is inputted. SOLUTION: The password is divided into an "aware password", an "unaware password" and a "link relation between aware and unaware passwords, and a legal user preliminarily sets a plurality of images and their sequences to be used as the "unaware password", the existence/absence of link relation calculation and a notation system of the "aware password" as a "link relation between aware and unaware passwords. The legal user finds a random character string recorded in the "unaware password" (particular image, picture or position) set in advance from images arranged at random with eyes, generates an "aware password" in the heart on the basis of the "link relation between the aware and unaware passwords set in advance and inputs the "aware password" as a password. COPYRIGHT: (C)2007,JPO&INPIT |
