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Abstract: . We show the demand operation in the schematic protection model is redundant in that it can be simulated by copy and create operations. We also consider to what extent amplification (or conditional demand) can be simulated by similar constructions. Keywords: information systems, operating systems, protection models, security 1 INTRODUCTION For protection purposes computer systems are viewed as consisting of subjects and objects. Active entities such as users or processes are subjects while... (Update)
Context of citations to this paper: More
...SPM included a third operation called demand. Demand is not used in the constructions of this paper and is known to be formally redundant [37]. the absence of tickets is a well known principle for protection [31] As a special case we also allow a link predicate which is always...
...of this paper and is mentioned here only for the sake of completeness. Demand in now actually known to be formally redundant [15]. 2.2 THE COPY OPERATION The copy operation moves a copy of a ticket from the domain of one subject to the domain of another leaving the...
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BibTeX entry: (Update)
Sandhu, R.S. "The Demand Operation in the Schematic Protection Model." Information Processing Letters 32(4):213-219 (1989). http://citeseer.ist.psu.edu/article/sandhu89demand.html More
@article{ sandhu89demand,
author = "Ravi S. Sandhu",
title = "The Demand Operation in the Schematic Protection Model",
journal = "Information Processing Letters",
volume = "32",
number = "4",
pages = "213-219",
year = "1989",
url = "citeseer.ist.psu.edu/article/sandhu89demand.html" }
Citations (may not include all citations):114 Capability-Based Computer Systems (context) - Levy - 1984
28 The Schematic Protection Model: Its Definition and Analysis .. (context) - Sandhu - 1988
26 Protection in the Hydra Operating System (context) - Cohen, Jefferson - 1975
18 A Linear Time Algorithm for Deciding Subject Security (context) - Lipton, Snyder - 1977
5 Some Owner Based Schemes with Dynamic Groups in the Schemati.. (context) - Sandhu, Share - 1986
5 Selective and Locally Controlled Transport of Privileges (context) - Minsky - 1984
2 Design and Analysis of Protection Schemes Based on the SendR.. (context) - Sandhu - 1983
1 Private communication (context) - Millen
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