| 摘要 |
PURPOSE: A password management system and a management method thereof are provided to prevent damage even though an input password is exposed. CONSTITUTION: A user management unit(12) stores numbers and calculation method calculated according to the digits of a password from a registered user. A random number generation unit(16) generates a random number corresponding to a number item of the password. An output unit(18) displays the random number generated in the random number generation unit so that the user is able to check the random number. A password checking unit(20) performs arithmetic operation of the random number generated in the random number generation unit and a calculation number according to the digits registered by the user through a digit based calculation method, and then registers the result as a disposable password. A password comparison unit(24) checks consistency by comparing the password inputted by the user with the disposable password registered in the password checking unit. A controller(26) authenticates the user if the password inputted by the user coincides with the disposable password. [Reference numerals] (12) User management unit; (14) User DB; (16) Random number generation unit; (18) Output unit; (20) Password checking unit; (22) Disposable password DB; (24) Password comparison unit; (26) Controller; (28) Crisis management unit; (30) Disposable password DB for crisis; (40) Finance company; (50) Security company
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