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Article

A Business-to-Business Collaboration System That Promotes Data Utilization While Encrypting Information on the Blockchain

1
Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
2
Faculty of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Nikos Fotiou
Sensors 2022, 22(13), 4909; https://doi.org/10.3390/s22134909
Received: 31 May 2022 / Revised: 26 June 2022 / Accepted: 27 June 2022 / Published: 29 June 2022
Ensuring the reliability of data gathering from every connected device is an essential issue for promoting the advancement of the next paradigm shift, i.e., Industry 4.0. Blockchain technology is becoming recognized as an advanced tool. However, data collaboration using blockchain has not progressed sufficiently among companies in the industrial supply chain (SC) that handle sensitive data, such as those related to product quality, etc. There are two reasons why data utilization is not sufficiently advanced in the industrial SC. The first is that manufacturing information is top secret. Blockchain mechanisms, such as Bitcoin, which uses PKI, require plaintext to be shared between companies to verify the identity of the company that sent the data. Another is that the merits of data collaboration between companies have not been materialized. To solve these problems, this paper proposes a business-to-business collaboration system using homomorphic encryption and blockchain techniques. Using the proposed system, each company can exchange encrypted confidential information and utilize the data for its own business. In a trial, an equipment manufacturer was able to identify the quality change caused by a decrease in equipment performance as a cryptographic value from blockchain and to identify the change one month earlier without knowing the quality value. View Full-Text
Keywords: business-to-business data collaboration; industrial supply chain; blockchain; homomorphic encryption business-to-business data collaboration; industrial supply chain; blockchain; homomorphic encryption
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MDPI and ACS Style

Nasu, H.; Kodera, Y.; Nogami, Y. A Business-to-Business Collaboration System That Promotes Data Utilization While Encrypting Information on the Blockchain. Sensors 2022, 22, 4909. https://doi.org/10.3390/s22134909

AMA Style

Nasu H, Kodera Y, Nogami Y. A Business-to-Business Collaboration System That Promotes Data Utilization While Encrypting Information on the Blockchain. Sensors. 2022; 22(13):4909. https://doi.org/10.3390/s22134909

Chicago/Turabian Style

Nasu, Hiroaki, Yuta Kodera, and Yasuyuki Nogami. 2022. "A Business-to-Business Collaboration System That Promotes Data Utilization While Encrypting Information on the Blockchain" Sensors 22, no. 13: 4909. https://doi.org/10.3390/s22134909

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