| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio data communication device which can ensure full confidentiality of key information required for a common key system of security function. SOLUTION: The radio data communication device, adopting a Bluetooth radio communication system, exchanges the common key information to be used for certification and coding, using an infrared communication part 10. CPU 30 stores the exchanged common key information in a memory 31, and it uses the information for production of key information for coding and decoding of a certifying, coding, and decoding processor 22. A radio data communication part 20 transmits the data coded by the coding and decoding processor 22 and executes decoding of the received data. |
