Blockchain based distributed trust management in IoT and IIoT: a survey
Résumé
Internet of Things (IoT) is the interconnection of objects sensing, communicating and interacting with each other on a cooperative basis to meet a standard goal. The integration of such paradigm within the manufacturing environment and processes in combination with other technologies has introduced Industry 4.0 that represents the fourth industrial revolution. In this scenario, security requirements represent a crucial issue whose satisfaction is a key to achieve users acceptance of such technologies. Such requirements include data confidentiality, integrity and authentication, identity management, privacy and trust among the different devices. Trust management plays a crucial role in IoT and particularly in IIoT for qualified services development, reliable data collection, device authentication and secure decision making situations. Recent research works have focused on the integration of the blockchain technology within trust management systems for IoT and IIoT environments. The inherent features of such technology could provide promising solutions to trust management systems specifically the decentralization of the trust process, the transparency and the traceability of shared trust data, the effective sharing of historical trust information, and finally the confidentiality, the integrity and the availability of the trust evidences. In this work, our focus is to provide a comprehensive and an investigated survey of current works carried out towards blockchain based trust approaches in IoT and IIoT systems. Following this, we discuss and identify raised issues and open challenges of blockchain based trustworthy IoT and IIoT in attempt to give an overview on strategies and directions for future research in this field.
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