Abstract
The decentralized nature of blockchain technologies can well match the needs of integrity and provenances of evidences collecting in digital forensics (DF) across jurisdictional borders. In this paper, a novel blockchain-based DF investigation framework in the Internet of Things (IoT) and social systems environment is proposed, which can provide proof of existence and privacy preservation for evidence items examination. To implement such features, we present a block-enabled forensics framework for IoT, namely, IoT forensic chain (IoTFC), which can offer forensic investigation with good authenticity, immutability, traceability, resilience, and distributed trust between evidential entitles as well as examiners. The IoTFC can deliver a guarantee of traceability and track provenance of evidence items. Details of evidence identification, preservation, analysis, and presentation will be recorded in chains of block. The IoTFC can increase trust of both evidence items and examiners by providing transparency of the audit train. The use case demonstrated the effectiveness of the proposed method.
Highlights
Over the years, the emerging technologies such as the social networks, Internet of Things (IoT), the fifth generation of communication (5G), the decentralized blockchain technologies, etc. have become an indispensable part of modern life [1], [2], [3], [4]
A blockchain based IoT forensic framework (IoT Forensic-Chain, IoT forensic chain (IoTFC)) for forensic investigating in the IoT environment is proposed, which provides full data provenance architecture and assurance of examination operations
In the past few years, lots of research efforts have been conducted in IoT forensics [18], [19], [20], including digital evidences identification, collection, storage, analysis, and distribution in IoT environments [19], which is very different with the existing computer forensics
Summary
The emerging technologies such as the social networks, Internet of Things (IoT), the fifth generation of communication (5G), the decentralized blockchain technologies, etc. have become an indispensable part of modern life [1], [2], [3], [4]. A blockchain based IoT forensic framework (IoT Forensic-Chain, IoTFC) for forensic investigating in the IoT environment is proposed, which provides full data provenance architecture and assurance of examination operations. It can provide security privacy and availability together with the transparency, traceability, trust between evidence/item and investigators, and continuous integrity of each evidence item. Detailed IoT forensic analysis procedures of recording all examination operations in blockchain networks are addressed.
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