JRIF: Reactive Information Flow Control for Java
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Abstract
A reactive information flow (RIF) automaton for a value v specifies (i) allowed uses for v and (ii) the RIF automaton for any value that might be directly or indirectly derived from v. RIF automata thus specify how transforming a value alters how the result might be used. Such labels are more expressive than existing approaches for controlling downgrading. We devised a type system around RIF automata and incorporated it into Jif, a dialect of Java that supports a classic form of labels for information flow. By implementing a compiler for the resulting JRIF language, we demonstrate how easy it is to replace a classic information-flow type system by a more expressive RIF-based type system. We programmed two example applications in JRIF, and we discuss insights they provide into the benefits of RIF-based security labels.
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Supported in part by AFOSR grants F9550-06-0019 and FA9550-11-1-0137, National Science Foundation grants 0430161, 0964409, and CCF-0424422 (TRUST), ONR grants N00014-01- 1-0968 and N00014-09-1-0652, and grants from Microsoft.
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2016-02-12
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Attribution-NonCommercial-ShareAlike 4.0 International
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technical report