| 摘要 |
PROBLEM TO BE SOLVED: To detect illegality to inter-board communication installed in electronic equipment. SOLUTION: When a control command transmitted to a peripheral board 320 is a prescribed control command, a main control board 310 generates an authentication code for authenticating the main control board 310 and an operation code for authenticating the order of operation of the main control board 310, and adds the authentication code and the operation code to the control command. The control command to which the code has been added is transmitted to the peripheral board 320. When receiving the control command, the peripheral board 320 authenticates the main control board 310 by using the authentication code added to the control command, and authenticates the order of operation of the main control board 310 by using the operation code. Then, when both authentications of authentication based on the authentication code and authentication based on the operation code are established, it is authenticated that the main control board 310 outputs a correct control command. COPYRIGHT: (C)2009,JPO&INPIT |
