| 摘要 |
<p>In an environment in which a control device can communicate with a plurality of controlled devices over a wireless LAN, the present invention prevents the control device from accidentally controlling a controlled device other than a prescribed controlled device. In a pairing step (S100), verification is performed as to whether a random number inputted into the control device (SP) matches an authentication random number that a controlled device (SK) had a display device display, and if said random numbers match, a public key for said controlled device (SK) is handed over to the control device (SP). In an activation step (S200), when the control device (SP) has requested activation of the controlled device (SK), verification is performed as to whether the control device (SP) is in possession of the actual public key of the controlled device (SK), and if so, a session key is shared between the control device (SP) and the controlled device (SK). In a secure communication step (S300), communication between the devices is performed using said session key.</p> |
