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Confidential Information Processing Device

  • US 20080010686A1
  • Filed: 11/07/2005
  • Published: 01/10/2008
  • Est. Priority Date: 11/11/2004
  • Status: Abandoned Application
First Claim
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1. A secret information processing apparatus for controlling accesses to resources therein from external apparatuses, the secret information processing apparatus comprising:

  • a level storage unit storing access control levels that are assigned to the resources and are used as a standard in judging whether or not to permit an access to any of the resources from any of the external apparatuses;

    a program storage unit storing an update target program;

    a receiving unit operable to receive, from one of the external apparatuses, a request to update the update target program;

    an update unit operable to perform an update process for updating the update target program if the receiving unit receives the request;

    an access control unit operable to determine whether or not to permit accesses to the resources from the external apparatus, in accordance with the access control levels corresponding to the resources; and

    a level changing unit operable to change, during the update process performed by the update unit, access control levels of resources, which are to be accessed by the update unit during the update process and whose access control levels indicate that accesses from the external apparatus are permitted, to levels indicating that accesses from the external apparatus are not permitted.

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