Accession Number : ADA087975


Title :   The Design of a Secure File Storage System


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Parks, Edward J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a087975.pdf


Report Date : Dec 1979


Pagination or Media Count : 123


Abstract : A design for a secure, multi-user, File Storage System is developed. This design, incorporating a concurrently developed Security Kernel, provides a multilevel secure flexible file storage serving a distributed system of dissimilar computers. The Security Kernel is responsible for non-discretionary (e.g., classification and clearance) security and the File Storage System Supervisor is responsible for discretionary (e.g., 'need to know') security. Multilevel security is achieved by the controlled access to consolidated file storage by Host computer systems. Multiprogramming of surrogate Supervisor processes operating on behalf of the Host computer systems provides for system efficiency. A segmented memory at the Supervisor level allows controlled data sharing among authorized users. System integrity is independent of the internal security controls (or lack of them) in the distributed systems; the File Storage System prevents system-wide security side effects. A loop free structure along with system simplicity and robustness are design characteristics.


Descriptors :   *DATA PROCESSING SECURITY , *COMPUTER FILES , COMPUTER ARCHITECTURE , THESES , SHARING , EXECUTIVE ROUTINES , MULTIPLE ACCESS , SEGMENTED , USER NEEDS , DATA STORAGE SYSTEMS , MULTIPROCESSORS


Subject Categories : Computer Programming and Software
      Computer Hardware


Distribution Statement : APPROVED FOR PUBLIC RELEASE