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On-the-fly Inlining of Dynamic Security Monitors

Abstract : Language-based information-flow security considers programs that manipulate pieces of data at different sensitivity levels. Securing information flow in such programs remains an open challenge. Recently, considerable progress has been made on understanding dynamic monitoring for secure information flow. This paper presents a framework for inlining dynamic information-flow monitors. A novel feature of our framework is the ability to perform inlining on the fly. We consider a source language that includes dynamic code evaluation of strings whose content might not be known until runtime. To secure this construct, our inlining is done on the fly, at the string evaluation time, and, just like conventional offline inlining, requires no modification of the hosting runtime environment. We present a formalization for a simple language to show that the inlined code is secure: it satisfies a noninterference property. We also discuss practical considerations and preliminary experimental results.
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Jonas Magazinius, Alejandro Russo, Andrei Sabelfeld. On-the-fly Inlining of Dynamic Security Monitors. 25th IFIP TC 11 International Information Security Conference (SEC) / Held as Part of World Computer Congress (WCC), Sep 2010, Brisbane, Australia. pp.173-186, ⟨10.1007/978-3-642-15257-3_16⟩. ⟨hal-01054519⟩

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