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Method and apparatus for protecting file system based on digital signature certificate

  • US 7,328,341 B1
  • Filed: 08/09/2000
  • Issued: 02/05/2008
  • Est. Priority Date: 04/14/2000
  • Status: Expired due to Term
First Claim
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1. A method for protecting a file system on a server computer, the method comprising:

  • generating a system security manager'"'"'s digital signature key pair and certificate;

    storing the system security manager'"'"'s certificate onto a security kernel of an operating system on the server computer based upon a digital signature of the system security manager;

    generating a user'"'"'s digital signature key pair and a user'"'"'s certificate signed using a secret key of the system security manager'"'"'s digital signature key pair;

    setting an access authority of the file system for the user'"'"'s certificate;

    identifying a user through a digital signature-based authentication using the system security manager'"'"'s certificate and the user'"'"'s certificate, when the user attempts to access the file system on the server computer; and

    granting the user access authority for a file in accordance with the access authority of the file system set for the user'"'"'s certificate only when the identifying is successful.

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