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RIF: Reactive Information Flow Labels

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Abstract

Restrictions that a reactive information flow (RIF) label imposes on a value are determined by the sequence of operations used to derive that value. This allows declassification, endorsement, and other forms of reclassification to be supported in a uniform way. Piecewise noninterference (PWNI) is introduced as a fitting security policy, because noninterference is not suitable. A type system is given for static enforcement of PWNI in programs that associate checkable classes of RIF labels with variables. Two checkable classes of RIF labels are described: RIF automata are general-purpose and based on finite-state automata; κ-labels concern confidentiality in programs that use cryptographic operations.

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2019-04-08

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information flow control; reclassification; piesewise noninterference

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Government Document

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Attribution-NonCommercial-ShareAlike 4.0 International

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technical report

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Now showing 1 - 2 of 2
VersionDateSummary
2*
2019-12-16 10:21:12
New version includes new content: Sections have been rearranged; Sections 2, 4, and 7 have been expanded; Two appendices have been added at the end of the paper.
2019-04-08 13:45:24
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