| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an information processing system capable of virtually establishing a plurality of keys to a shared area of an integrated circuit chip capable of hierarchically including areas being data storage areas. <P>SOLUTION: A provider 0 manages the whole IC card (integrated circuit chip) 100, the IC card includes a plurality of providers 1, 2, each of which manages part areas of the IC card and provides a service to the IC card, the provider 0 establishes the shared area 3 to the IC card which both the provides 1, 2 use, and when providing a degeneration key for access to the shared area by the providers 1, 2 utilizing the shared area, the provider 0 is characterized by generating the degeneration key including the keys of the areas managed by the providers 1, 2. <P>COPYRIGHT: (C)2007,JPO&INPIT |
