| 摘要 |
PURPOSE:To make stealing hard by using plural password codes, randomizing the 1st code independently and logical operation result between the code succeeding to the 2nd code and the preceedingly randomized result to register the result of the randomization as a password. CONSTITUTION:The 1st key input when generated is stored in a register 10 and randomized by a random number generator 16, and the 1st randomized key input is inputted to one input terminal of a logical gate group 22, inputted to a register 12 when the 2nd key input is generated, and inputted to the other input terminal of the logical gate group 22 to perform logical operation there. The result is randomized by a random number generator 18. Further, the 3rd key input when generated is inputted to a register 14 and the random number result of a random number generator 20 is registered as the password through similar processes. A user hits the 1st - the 3rd keys in the same order to obtain the same output as that in the registration through similar randomization logical operation. |
