| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an authentication system capable of preventing authentication imitation. Ž<P>SOLUTION: A CPU 102 of a PC 101 encrypts a command or data defined in advance, and decrypts the encrypted command or data. The encrypted command or data, and the decrypted command or data is transmitted and received by a communication method complying with a communication protocol through USB connectors 107 and 118. In addition, the authentication of the PC 101 and a video camera 111 is established when all or a portion of the transmitted and encrypted command or data coincide with received decrypted command or data. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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