| 摘要 |
PROBLEM TO BE SOLVED: To provide communication equipment which adds signature information to data to be transferred and confirms validity of a transmitter and data by the signature information. SOLUTION: The signature information is added to the data transmitted from communication equipment 1 and transmitted to communication equipment 2 through a network 3. The communication equipment 2 verifies the signature information added to the data received by a communication part 21 by a verification part 22, when it is normally verified, performs processing to the data by a processing part 23 considering that the data is normally received. The signature information is added also to data of a processing result and transmitted to the communication equipment 1 at a request origin. Also in the communication equipment 1, the signature information added to the received data of processing result is verified by a verification part 12 and when it is normally verified, it is considered that the processing result is normally received. The signature information added for falsification prevention is used also for determination of whether or not the data are normally received, an amount of data is reduced and a processing load is alleviated. COPYRIGHT: (C)2006,JPO&NCIPI
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