The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2001
Filed:
Oct. 08, 1999
Matthew A. Blaze, New York, NY (US);
Joan Feigenbaum, New York, NY (US);
Martin J Strauss, Summit, NJ (US);
AT&T, New York, NY (US);
Abstract
A method and apparatus are provided for compliance checking in a trust-management system A request r, a policy assertion (ƒ,, POLICY), and n−1 credential assertions (ƒ,, s,) , . . . , (ƒ,, s,) are received, each credential assertion comprising a credential function ƒ,and a credential source s,. Each assertion may be monotonic, authentic, and locally bounded. An acceptance record set S is initialized to {(&Lgr;, &Lgr;, R)}, where A represents a distinguished null string, and R represents the request r. Each assertion (ƒ,, s,), where i represents the integers from n−1 to 0, is run and the result is added to the acceptance record set S. This is repeated mn times, where m represents a number greater than 1, and an acceptance is output if any of the results in the acceptance record set S comprise an acceptance record (0, POLICY, R).