| 摘要 |
PURPOSE:To prevent information of significance from leaking by changing the variable of an information conversion procedure at random at every transfer of information. CONSTITUTION:When the information is transferred from a computer 11 to a computer 12, the computer 11 requests the transmission of the variable X of an information conversion function to the computer 12, and the computer 12 generates the variable of a function F[X] by using a random number, and transmits it to the computer 11. The computer 11 performs the information conversion of the information transmitted with an information conversion means 13 by using the variable X transmitted from the computer 12. At a computer 12 side, the reverse conversion of received information is performed with an information reverse conversion means 14. Thereby, it is possible to prevent the information leaking and the unauthorized use of the computer from being performed. |
