| 摘要 |
A mobile terminal includes a near-field communication device capable of performing near-field wireless communication with an external device, and a controller configured to instruct the external device or the near-field communication device to execute a command. The near-field communication device has a storage unit, a first mutual authentication unit for authenticating the controller and for requesting the controller to authenticate the near-field communication device, a first communication key setting unit for setting a first communication key, a second mutual authentication unit for authenticating the external device and for requesting the external device to authenticate the near-field communication device, and a second communication key setting unit for setting a second communication key. The controller and the near-field communication device perform secure communication using the first communication key, and the near-field communication device and the external device perform secure communication using the second communication key.
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