| 摘要 |
A gating device for cryptographic transformation comprises first, second, third and fourth AND elements, first and second OR elements, first and second information inputs of the device, command code input and first and second information outputs of the device. First information input of the device is connected to first inputs of first and second AND elements and to first inverting input of third AND element and third inverting input of fourth AND element. Second information input of the device is connected to second inputs of second and fourth AND elements, to second inverting inputs of first and third AND elements and to first inverting input of fifth AND element, output of which is second information output of the device. Input of command code is connected to third inputs of second and third AND elements, to the third inverting input of first AND element and to first inverting input of fourth element. Outputs of first, second, third and fourth AND elements are connected to first, second, third and fourth inputs of first OR element correspondingly, output of which is first information output of the device. |
