| 摘要 |
PURPOSE: An information unit management method and system is provided to support an execution of an information unit and a safe download for a chip card issuer by safely interworking between a 1st information processing unit, for example, a chip card, and a safe 2nd information processing unit, for example, a chip card reader. CONSTITUTION: An information unit management method comprises steps of offering the information unit, processed via an encryption process, from a safe 2nd information processing unit(1) issuer, namely a chip card issuer, to a 1st information processing unit(2), namely a chip card reader(3,2,35), offering at least one key used in the encryption process to the safe 2nd information processing unit(1), and encrypting the information unit by using the key(29,38)
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