| 摘要 |
According to an embodiment, a smart card includes a communication section, a generation part, a first record section and an erasure section. The communication section transmits and receives data with the external device. The generation section generates a session key according to the command which is received by the communication section and requires generation of a session key. The first record section stores the session key generated by the generation section. The erasure section erases the session key when a holding period of the session key stored in the first record section exceeds a threshold. |
