| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a communication data concealing system capable of concealing the contents of communication data by scrambling these communication data so as not to know the contents of entire communication data even when the communication data are monitored on a network. SOLUTION: In this communication data concealing system, communication data are divided into prescribed data length, a numerical value showing the order or offset of respective divided data is enciphered while using a prescribed key, the divided data are sent to the network while adding this value, the enciphered numerical value added to the respective divided data received from the network is deciphered while using a prescribed key and according to the order or offset shown by the deciphered numerical value, the source communication data are restored from the received divided data. Thus, even when the communication data are monitored on the network, these communication data are scrambled for the prescribed data length, the contents of entire communication data can not be known and the contents of communication data can be concealed.</p> |
