Blockchain With Confidentiality for Smart Factory Based on 5G MEC 


Vol. 46,  No. 6, pp. 956-964, Jun.  2021
10.7840/kics.2021.46.6.956


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  Abstract

By applying 5G mobile communication to smart factories, it is possible to connect factory equipment, data, and personnel in real time. However, when a centralized network and database system are used in an IoT-based system, single problem may propagate to the entire system, and a method for securing reliability among system participants is required. As an alternative to this, a blockchain technology applicable to P2P communication between nodes in a distributed structure is attracting attention. In this paper, we present a blockchain-based security technology for an IoT smart factory environment based on 5G mobile communication. It provides security to track the data exchange history between users in a blockchain environment. In particular, the proposed method solves the privacy problem through a homomorphic encryption for addition and scalar multiplication that can collect sensor information in the factory in an encrypted state without any decryption. The aggregated information is stored in a new block again, and a hierarchical secret sharing technique is used for related key management. The safety of the proposed system was proved through information theoretical analysis, and the storage efficiency and communication cost were improved compared to the existing method.

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  Cite this article

[IEEE Style]

Y. E. Lee, Y. Kim, Y. Kim, C. Seo, "Blockchain With Confidentiality for Smart Factory Based on 5G MEC," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 6, pp. 956-964, 2021. DOI: 10.7840/kics.2021.46.6.956.

[ACM Style]

Yong Eun Lee, Youngsoo Kim, Young-Sik Kim, and Changho Seo. 2021. Blockchain With Confidentiality for Smart Factory Based on 5G MEC. The Journal of Korean Institute of Communications and Information Sciences, 46, 6, (2021), 956-964. DOI: 10.7840/kics.2021.46.6.956.

[KICS Style]

Yong Eun Lee, Youngsoo Kim, Young-Sik Kim, Changho Seo, "Blockchain With Confidentiality for Smart Factory Based on 5G MEC," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 6, pp. 956-964, 6. 2021. (https://doi.org/10.7840/kics.2021.46.6.956)

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