| 摘要 |
PROBLEM TO BE SOLVED: To detect a replay attack with the suppression of a device load which receives a frame.SOLUTION: A communication control device includes a receiver unit and a control unit. The receiver unit receives data including first identification information or second identification information, from a first node. When the receiver unit receives the first data including the first identification information, the control unit generates a first authentication symbol using the first data. The receiver unit receives, from the first node, second data which includes the second identification information and a second authentication symbol generated by the first node using the first data. Based on the result of comparison between the first authentication symbol and the second authentication symbol, the control unit determines whether or not to interrupt the processing of data notified to the second node using the first identification information.SELECTED DRAWING: Figure 1 |
