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(to be completed)

 


ThinkMind // International Journal On Advances in Intelligent Systems, volume 7, numbers 3 and 4, 2014 // View article intsys_v7_n34_2014_24


Representing and Publishing Cyber Forensic Data and its Provenance Metadata: From Open to Closed Consumption

Authors:
Tamer Fares Gayed
Hakim Lounis
Moncef Bari

Keywords: Open Data, Linked Data Principles, Linked Closed Data, Public Key Infrastructure, Digital Certificates, Cyber Forensics, Chain of Custody.

Abstract:
Role players of any forensic investigation process record chronologically all forensic data resulted from their investigation, in order to be presented to the juries in the court of law. When such results are recorded and posted, they are called chain of custodies (CoCs). The forensic data provided within these documents play a vital role in the process of forensic investigation, because they answer questions about how evidences are collected, transported, analyzed, and preserved since their seizure through their production in court. Provenance metadata accompany these forensic data to answer questions about the origin of these data and build trustworthy between role players and juries in order to make the tangible CoCs admissible in the court of law. Nowadays, with the advent of the digital age, the forensic investigation is not only applied to physical crime, but also on digital evidences. The forensic data and their metadata presented in these tangible documents need also to undergo a radical transformation from paper to electronic data in order to accommodate this evolution. CoCs should be also readable and consumable not only by human but also by machines. The semantic web is a fertile land to represent and manage the tangible CoCs, because it uses web principles known as Linked Data Principles (LDP), which provide useful information in Resource Description Framework (RDF) format upon Unified Resource Identifiers (URI) resolution. In addition, it includes different provenance vocabularies that can be useful to express the forensic metadata. Generally, the power of LDP resides in publishing data publicly without any access restriction on the web. However, the openness of forensic data and their metadata should not be the same case. They should obey some access restriction in order to be shared only between role players and juries. Public Key Infrastructure (PKI) can be applied to restrict the access to some or all resources of represented data and bends the LDP from open to closed consumption, while maintaining the resolution of such restricted resources. Juries in turn will consume the restricted represented data using different LDP consumption applications. This paper provides the complete framework explaining how forensic and provenance data are represented and published using LDP, and how PKI can be used to restrict these data/resources in order to be shared in a closed scale. Evaluation of the framework using several empirical experimentations will not be on the scope of this paper.

Pages: 662 to 688

Copyright: Copyright (c) to authors, 2014. Used with permission.

Publication date: December 30, 2014

Published in: journal

ISSN: 1942-2679

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