Accession Number:

ADA234974

Title:

Multilevel Security for Knowledge Based Systems

Descriptive Note:

Final rept.

Corporate Author:

SRI INTERNATIONAL MENLO PARK CA

Personal Author(s):

Report Date:

1990-12-01

Pagination or Media Count:

57.0

Abstract:

We discuss work aimed at defining a multilevel, mandatory security policy for knowledge based systems. We address two distinct issues an effective implementation formalism based on a multilevel, object oriented programming paradigm, and requirements for ensuring the corrections of inferences computed on the basis of possibly contradictory information from different access classes. We define requirements for an object-oriented system capable of handling multilevel object with a single access class. We then outline a method by which multilevel objects may be used to implement a simple knowledge based system built on production rules. We argue that the issues regarding correctness are similar to those of truth maintenance in standard knowledge based systems and may be addressed by similar methods.

Subject Categories:

  • Computer Systems Management and Standards

Distribution Statement:

APPROVED FOR PUBLIC RELEASE