Protection and control of information sharing in multics

Authors:
Jerome H. Saltzer
Affiliations:
Massachusetts Institute of Technology, Department of Electrical Engineering and Project MAC
Venue:
SOSP '73 Proceedings of the fourth ACM symposium on Operating system principles
Year:
1973

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Abstract

This paper describes the design of mechanisms to control sharing of information in the Multics system. Seven design principles help provide insight into the tradeoffs among different possible designs. The key mechanisms described include access control lists, hierarchical control of access specifications, identification and authentication of users, and primary memory protection. The paper ends with a discussion of several known weaknesses in the current protection mechanism design.