B-CoC: A Blockchain-Based Chain of Custody for Evidences Management in Digital Forensics

Authors Silvia Bonomi , Marco Casini, Claudio Ciccotelli



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Author Details

Silvia Bonomi
  • Research Center of Cyber Intelligence and Information Security (CIS), Department of Computer, Control, and Management Engineering "A. Ruberti", Sapienza Università di Roma, Via Ariosto 25, 00145 Rome, Italy
Marco Casini
  • Department of Computer, Control, and Management Engineering "A. Ruberti", Sapienza Università di Roma, Via Ariosto 25, 00145 Rome, Italy
Claudio Ciccotelli
  • Research Center of Cyber Intelligence and Information Security (CIS), Department of Computer, Control, and Management Engineering "A. Ruberti", Sapienza Università di Roma, Via Ariosto 25, 00145 Rome, Italy

Acknowledgements

This work has been partially supported by the Sapienza Ateneo 2017 project INOCS.

Cite AsGet BibTex

Silvia Bonomi, Marco Casini, and Claudio Ciccotelli. B-CoC: A Blockchain-Based Chain of Custody for Evidences Management in Digital Forensics. In International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2019). Open Access Series in Informatics (OASIcs), Volume 71, pp. 12:1-12:15, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)
https://doi.org/10.4230/OASIcs.Tokenomics.2019.12

Abstract

One of the main issues in digital forensics is the management of evidences. From the time of evidence collection until the time of their exploitation in a legal court, evidences may be accessed by multiple parties involved in the investigation that take temporary their ownership. This process, called Chain of Custody (CoC), must ensure that evidences are not altered during the investigation, despite multiple entities owned them, in order to be admissible in a legal court. Currently digital evidences CoC is managed entirely manually with entities involved in the chain required to fill in documents accompanying the evidence. In this paper, we propose a Blockchain-based Chain of Custody (B-CoC) to dematerialize the CoC process guaranteeing auditable integrity of the collected evidences and traceability of owners. We developed a prototype of B-CoC based on Ethereum and we evaluated its performance.

Subject Classification

ACM Subject Classification
  • Applied computing → Computer forensics
  • Applied computing → Evidence collection, storage and analysis
Keywords
  • Digital Forensics
  • Chain of Custody
  • Digital Evidence
  • Private Blockchain
  • Ethereum

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References

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