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Trust Management Systems and Methods

  • US 20090031126A1
  • Filed: 06/26/2008
  • Published: 01/29/2009
  • Est. Priority Date: 05/19/2000
  • Status: Active Grant
First Claim
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1. In a computer-implemented trust management system, a method for controlling access to a computing resource, the method including:

  • obtaining a request for the computing resource;

    obtaining a group of certificates, each certificate expressing at least one authorization by at least one principal;

    identifying a set of principals associated with the certificates,initializing a state associated with each principal;

    evaluating a certificate as a function of the state associated with one or more of the principals;

    updating the state of one or more of the principals if the result of said evaluating step indicates that the state of a principal should be changed; and

    repeating said evaluating and updating steps until a fixpoint is reached or until a predefined principal is found to authorize the request.

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