| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine that prevents an unauthorized access to a door monitoring device.SOLUTION: When various sequence for performing various setting of a 24h door monitoring unit 63 is executed, a second control board 72 transmits a random number command to the 24h door monitoring unit 63. The 24h door monitoring unit 63 transmits the generated random number value to the second control board 72, reads a secret key from EEPROM205, performs a predetermined calculation by using the secret keys being read and the random number value transmitted to the second control board 72, and generates a password. The second control board 72 receiving the random number value performs a predetermined calculation by using the secret key stored in sub-SRAM103b and the received random number value and generates the password, and transmits the generated password to the 24h door monitoring unit 63. The 24h door monitoring unit 63 determines whether or not the password received from the second control board 72 matches the password generated by itself.SELECTED DRAWING: Figure 17 |
