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Cited by 406

The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.

Secure information flow in a multi-threaded imperative language

Smith, Geoffrey, Volpano, Dennis·1998·Proceedings of the 25th ACM SIGPLAN-SIGACT symposium on Principles of programming languages - POPL '98

Abstract

Previously, we developed a type system to ensure secure information flow in a sequential, imperative programming language [VSI96]. Program variables are classified as either high or low security; intuitively, we wish to prevent information from flowing from high variables to low variables. Here, we extend the analysis to deal with a multithreaded language. We show that the previous type system is insufficient to ensure a desirable security property called noninterference. Noninterference basically means that the final values of low variables are independent of the initial values of high variables. By modifying the sequential type system, we are able to guarantee noninterference for concurrent programs. Crucial to this result, however, is the use of purely nondeterministic thread scheduling. Since implementing such scheduling is problematic, we also show how a more restrictive type system can guarantee noninterference, given a more deterministic (and easily implementable) scheduling policy, such as round-robin time slicing. Finally, we consider the consequences of adding a clock to the language.

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Metadata

Authors
Smith, G., & Volpano, D.
Venue
Proceedings of the 25th ACM SIGPLAN-SIGACT symposium on Principles of programming languages - POPL '98
Publisher
ACM Press
Published
1998
Pages
355-364
OpenAlex
W2057503672
Cited by
406
References
26
FWCI
15.89
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Secure information flow in a multi-threaded imperative language. https://app.cochat.ai/papers/10.1145/268946.268975
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Smith, G., & Volpano, D. (1998). Secure information flow in a multi-threaded imperative language. Proceedings of the 25th ACM SIGPLAN-SIGACT symposium on Principles of programming languages - POPL '98. https://doi.org/10.1145/268946.268975

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