发明人：Uchihira, Naoshi c/o Patent Division
申请号：EP84306269.6
申请日：19840913
公开号：EP0138386A2
公开日：
19850424
专利附图：
摘要：An identification card (5), used for data communication between an on-line terminal (2) and a host system (1), has an IC chip (17) mounted thereon. The IC chip (17)includes a key code generating circuit (22) which generates a key code from a
preassigned code number stored in the memory (21) of the chip and a random number supplied from the host system through a card terminal (19). An encrypter (23), which is on the card (5) and is part of the IC chip, encrypts output data from the memory (21), using the key code, before that data is sent to the host system (1) via the terminal (2).
申请人：KABUSHIKI KAISHA TOSHIBA
地址：72, Horikawa-cho, Saiwai-ku Kawasaki-shi, Kanagawa-ken 210 JP 国籍：JP
代理机构：Kirk, Geoffrey Thomas
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