| 摘要 |
PURPOSE:To improve the cipher intensity when a cryptogram is transmitted and received through a communication channel. CONSTITUTION:A cipher transmitter 1 consists of a mixing device 2 which mixes together the formal information and the pseudo information, a ciphering device 3 which ciphers the mixed information with the different keys (k) and k', and a transmitter 4 which transmits a produced cryptogram. A cipher receiver 5 consists of a receiver, a decoding device 7 which can set an optional key, and an output device. The transmitter 1 is connected to the receiver 5 via a communication channel 9. |
