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Private multi-hop accountability for supply chains

: Pennekamp, J.; Bader, L.; Matzutt, R.; Niemietz, P.; Trauth, D.; Henze, M.; Bergs, T.; Wehrle, K.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Conference on Communications Workshops, ICC Workshops 2020 : Proceedings : Dublin, Ireland, 7-11 June 2020
Piscataway, NJ: IEEE, 2020
ISBN: 978-1-72817-440-2
ISBN: 978-1-72817-441-9
7 pp.
International Conference on Communications (ICC) <2020, Online>
Conference Paper
Fraunhofer FKIE ()

Today's supply chains are becoming increasingly flexible in nature. While adaptability is vastly increased, these more dynamic associations necessitate more extensive data sharing among different stakeholders while simultaneously overturning previously established levels of trust. Hence, manufacturers' demand to track goods and to investigate root causes of issues across their supply chains becomes more challenging to satisfy within these now untrusted environments. Complementarily, suppliers need to keep any data irrelevant to such routine checks secret to remain competitive. To bridge the needs of contractors and suppliers in increasingly flexible supply chains, we thus propose to establish a privacy-preserving and distributed multi-hop accountability log among the involved stakeholders based on Attribute-based Encryption and backed by a blockchain. Our large-scale feasibility study is motivated by a real-world manufacturing process, i.e., a fine blanking line, and re veals only modest costs for multi-hop tracing and tracking of goods.