发明授权
US06840443B2 Dual purpose portable card, a communication system, a communication method, a terminal apparatus, and a computer-readable record medium recording a program 有权
双用便携式卡,通信系统,通信方法,终端装置和记录程序的计算机可读记录介质

Dual purpose portable card, a communication system, a communication method, a terminal apparatus, and a computer-readable record medium recording a program
摘要:
An IC card 1 having an integrated device includes a nonvolatile memory 12 and an encryption circuit 10. The nonvolatile memory 12 after the IC card 1 is placed in a radio wave zone to receive a power supply from a terminal apparatus through a radio wave. The encryption circuit 10 coordinates with a first terminal apparatus to perform a mutual authentication. The integrated device includes a nonvolatile memory 13 and an encryption circuit 11. The nonvolatile memory 13 is accessed after the IC card 1 is placed at a location close to an antenna in the first terminal apparatus and only after the IC card 1 receives a higher-level power supply from the antenna. The encryption circuit 11 coordinates with the terminal apparatus to perform a mutual authentication. Personal information that requires high security is stored in the nonvolatile memory 13 and the encryption circuit 11 performs a mutual authentication whenever the nonvolatile memory 13 is accessed.
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