| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system capable of more reliably detecting falsification of communicated information.SOLUTION: A communication system exchanges packets between information terminals of a client 102 and a server 104 executes a first step of sharing a packet size of the packets exchanged between the client 102 and the server 104, a second step of generating a packet of the packet size comprising information to be transmitted at one of the client 102 and the server 104, a third step of transmitting the packet generated in the second step from the one information terminal to the other information terminal, and a fourth step of, if the packet has a size different from the determined packet size in receiving the packet at the other information terminal, determining that the packet has been falsified.SELECTED DRAWING: Figure 4 |
