Accession Number:

AD0750173

Title:

Cooperation of Mutually Suspicious Subsystems in a Computer Utility

Descriptive Note:

Doctoral thesis

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE PROJECT MAC

Personal Author(s):

Report Date:

1972-09-01

Pagination or Media Count:

169.0

Abstract:

The report describes practical protection mechanisms that allow mutually suspicious subsystems to cooperate in a single computation and still be protected from one another. The mechanisms are based on the division of a computation into independent domains of access privilege, each of which may encapsulate a protected subsystem. The central component of the mechanisms is a hardware processor that automatically enforces the access constraints associated with a multidomain computation implemented as a single execution point in a segmented virtual memory.

Subject Categories:

  • Computer Hardware
  • Computer Systems
  • Computer Systems Management and Standards

Distribution Statement:

APPROVED FOR PUBLIC RELEASE