Institute of Computer Languages
Compilers and Languages Group

Talks 2016 - Dr. Gergö Barany

Der Arbeitsbereich für Programmiersprachen und Übersetzer am Institut für Computersprachen lädt zu folgendem Vortrag ein:

Dr. Gergö Barany

CEA LIST Software Reliability Laboratory, Paris, France
Datum: Dienstag, den 1. März 2016
Zeit: 14:00 Uhr c.t. *)
Ort: TU Wien, Bibliothek E185.1, Argentinierstr. 8, 4. Stock (Mitte).
*) Tee: 13:30 Uhr in der Bibliothek E185.1, Argentinierstr. 8, 4. Stock (Mitte).

über

Hybrid Information Flow Analysis for Programs with Arrays

Zusammenfassung:

Information flow analysis checks whether certain pieces of (confidential) data may affect the results of computations in unwanted ways and thus leak information. Dynamic information flow analysis adds instrumentation code to the target software to track flows at run time and raise alarms if a flow policy is violated; hybrid analyses combine this with preliminary static analysis.
Using a subset of C as the target language, we extend previous work on hybrid information flow analysis that handled pointers to scalars. Our extended formulation handles arrays, pointers to array elements, and pointer arithmetic. Information flow through arrays of pointers is tracked precisely while arrays of non-pointer types are summarized efficiently.
A prototype of our approach is implemented using the Frama-C program analysis and transformation framework. Work on a full machine-checked proof of the correctness of our approach using Isabelle/HOL is well underway; we present the existing parts and sketch the rest of the correctness argument.
(Paper accepted for VPT 2016, Workshop on Verification and Program Transformation, colocated with ETAPS.)

Kurzbiographie

Gergö Barany obtained MSc and PhD degrees from Vienna University of Technology, where he was a research assistant working on projects in program analysis, machine code generation, and interpreters. Since 2015 he is a postdoc at CEA LIST (France), working with the Frama-C framework for analysis of C programs. His interests include compilers, program verification, and static analysis. ( http://www-list.cea.fr/en/ )

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