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What and Who
Title:A New Algorithm For Probabilistic Noninterference
Speaker:Gregor Snelting
coming from:Karlsruhe Institute of Technology (KIT)
Speakers Bio:
Event Type:CISPA Distinguished Lecture Series
Visibility:D1, D2, D3, D4, D5, SWS, RG1, MMCI
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Level:Public Audience
Language:English
Date, Time and Location
Date:Wednesday, 22 July 2015
Time:14:00
Duration:60 Minutes
Location:Saarbrücken
Building:E1 5
Room:0.02
Abstract
We present a new algorithm for discovering probabilistic security leaks in concurrent programs. Probabilistic leaks arise from subtle interactions between threads, and probabilistic noninterference guarantees that such leaks do not exist.

The new algorithm is named RLSOD ("Relaxed Low Security Observable Determinism") and avoids soundness leaks, restrictions, and precision problems of earlier approaches; this feature beiing the result of flow-sensitive, context-sensitive program analysis,  and a new treatment of termination leaks.

The talk presents a short overview of probabilistic leaks and their handling in the security analysis tool JOANA, and then explains RLSOD in some detail. The consequences of flow-sensitivity are discussed, and the new treatment of nonterminating traces is described. The static RLSOD analysis (which is part of JOANA) is explained, and the soundness theorem for RLSOD is sketched.

The work has been described in detail in: D. Giffhorn, G. Snelting, /A new algorithm for low-deterministic security/, International Journal of Information Security, *Vol. 14*, (3), pp. 263-287, 2015.
Contact
Name(s):Sabine Nermerich
Phone:3023585
EMail:--email address not disclosed on the web
Video Broadcast
Video Broadcast:NoTo Location:
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Created by:Sabine Nermerich/AG4/MPII/DE, 06/11/2015 09:37 AMLast modified by:Uwe Brahm/MPII/DE, 11/24/2016 04:13 PM
  • Sabine Nermerich, 06/11/2015 09:40 AM -- Created document.