Protection in Operating Systems¶
Harrison, M. A., Ruzzo, W. L., & Ullman, J. D. (1976). Protection in Operating Systems. Communications of the ACM, 19(8), 461-471.
Cited by¶
1 citation across 1 artifact.
Each citation links to the sentence it supports in the citing article.
Mechanisms¶
- Formal Decidability Probe
- In the general access-matrix protection model this safety question — whether a right can ever leak to a subject that should not hold it — is undecidable: no algorithm always halts and answers it for arbitrary policies over unbounded action sequences.
This sourceProves that no algorithm can decide whether an arbitrary access-matrix protection system can leak a right.
- In the general access-matrix protection model this safety question — whether a right can ever leak to a subject that should not hold it — is undecidable: no algorithm always halts and answers it for arbitrary policies over unbounded action sequences.
Verification¶
Does it exist? Confirmed. This work's DOI resolves to a registered record, which fixes its identity. That is all it fixes.
Does it back the claim? Not recorded. The single citation of this work carries no recorded support check.
Was it audited? Yes. A second, independent pass read the citation against the article text and recorded a verdict.
Support is checked per citation rather than per work — the same source can be cited soundly in one article and wrongly in another. Per-citation recording began recently, so a citation with no recorded check is a gap in the record rather than evidence it went unchecked.
See how references were verified.
Registry ID ref:beb751593e7f · see in the full table