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Toward Formal Reasoning in Cyberforensic Case Investigation with Forensic Lucid

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Toward Formal Reasoning in Cyberforensic Case Investigation with Forensic Lucid

Mokhov, Serguei A. (2012) Toward Formal Reasoning in Cyberforensic Case Investigation with Forensic Lucid. In: Lecture: Toward Formal Reasoning in Cyberforensic Case Investigation with Forensic Lucid, May 8, 2012, East Main Building 10-101, Department of Computer Science and Technology, Tsinghua University, Beijing, China.

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Official URL: http://www.tsinghua.edu.cn/publish/csen/4927/2012/...

Abstract

This work focuses on the application of the intensional logic to cyberforensic analysis and its benefits and difficulties are compared with the finite-state automata approach. This work extends the use of the scientific intensional programming paradigm onto modeling and implementation of a cyberforensics investigation process with the backtrace of event reconstruction, modeling the evidence as multidimensional hierarchical contexts, and proving or disproving the claims with it in the intensional manner of evaluation. This is a practical, context-aware improvement over the finite state automata (FSA) approach we have seen in the related works. As a base implementation language model we use in this approach is a new dialect of the Lucid programming language, that we call Forensic Lucid and we define hierarchical contexts based on the intensional logic for the evaluation of cyberforensic expressions. We also augment the work with the credibility factors surrounding digital evidence and witness accounts, which have not been previously modeled. The Forensic Lucid programming language proposed for this intensional cyberforensic analysis, includes the syntax and operational semantics. In large part, the language is based on its predecessor and codecessor Lucid dialects, such as GIPL, Indexical Lucid, Lucx, Objective Lucid, and JOOIP bound by the intensional (temporal) logic that is behind them. The distributed Java-based eduction (demand-driven) evaluation engine of the General Intensional Programming System (GIPSY) is the run-time system to cope with the scalability issues of the large evidential knowledge base. We then propose a near future work with the dataflow graph visualization and a toolset for compilation and execution of the Forensic Lucid programs. We show some examples by re-writing them in Forensic Lucid. We then postulate other investigations applications beyond the digital forensics domain.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Computer Science and Software Engineering
Concordia University > Faculty of Engineering and Computer Science > Concordia Institute for Information Systems Engineering
Concordia University > Research Units > Computer Security Laboratory
Item Type:Conference or Workshop Item (Lecture)
Refereed:No
Authors:Mokhov, Serguei A.
Date:08 May 2012
Projects:
  • Forensic Lucid
  • Intensional Cyberforensics
  • General Intensional Programming System (GIPSY)
Funders:
  • China-Canada Scholars Exchange Program (CCSEP)
  • Faculty of Engineering and Computer Science (ENCS), Concordia University, Canada
  • NSERC
Keywords:Forensic Lucid, intensional logic, formal methods, digital investigation
ID Code:974044
Deposited By:Serguei Mokhov
Deposited On:14 May 2012 16:49
Last Modified:14 May 2012 16:49
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