| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for efficiently securing security of a communication system.SOLUTION: A radio device comprises: a reception unit which receives from another radio device a packet signal including data to which an electronic signature generated by public key encryption and a message authentication code generated by common key encryption are attached; and an output unit which outputs a verification result of the data extracted from the packet signal and the message authentication code attached to the data, and also outputs a verification result of an electronic signature of data included in a packet signal which was received in the past from the other radio device having transmitted the latest packet signal. |
