Secure Comparison Protocol for Promoting Business to Business Collaboration on the Blockchain

Nasu, Hiroaki; Kodera, Yuta; Nogami, Yasuyuki

doi:10.1109/icce-tw52618.2021.9603017

Cited by 3 publications

(1 citation statement)

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“…In [42], our previous work showed a secure comparison protocol for B2B collaboration in the SC at ICCE-TW2021. This paper shows the concrete system architecture required to implement the proposed scenario for the actual business.…”

Section: Proposal B2b Collaboration System On the Scmentioning

confidence: 99%

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

Nasu

Kodera

Nogami

2022

Sensors

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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.

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Section: Proposal B2b Collaboration System On the Scmentioning

confidence: 99%