Accession Number:

ADA109553

Title:

The Naval Postgraduate School SECURE ARCHIVAL STORAGE SYSTEM. Part II. Segment and Process Management Implementation.

Descriptive Note:

Technical rept.,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Report Date:

1981-03-01

Pagination or Media Count:

451.0

Abstract:

The security kernel technology has provided the technical foundation for highly reliable protection of computerized information. However, the operating system implementations face two significant challenges providing 1 adequate computational resources for applications tasks, and 2 a clean, straightforward structure whose correctness can be easily reviewed. This paper presents the experience on an ongoing security kernel implementation using the Advanced Micro Devices 4116 single-board computer based on the Z8002 microprocessor. The performance issues of process switching, domain changing, and multiprocessor bus contention are explicitly addressed. The strictly hierarchical i.e., loop-free structure provides a series of increasingly capable, separately usable operating system subsets. Security enforcement is structured in two layers the basic kernel rigorously enforces a non-discretionary viz., lattice model policy, while an upper layer provides the access refinements for a discretionary policy. Author

Subject Categories:

  • Computer Programming and Software
  • Computer Hardware
  • Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE