Sharingchain : A privacy protection scheme based on blockchain in the supply chain

With the development of the supply chain, information-sharing has received great attention recently. At the same time, partners in the supply chain improve efficiency through information sharing, but private information needs to be protected. We propose a supply chain data sharing scheme based on Quorum blockchain, namely Sharingchain. Distribute keys through private transactions to achieve access control to private information. Access rights can be revoked or authorized through key management. In addition, a public transaction data structure is designed to transmit encrypted data. Security analysis and performance analysis show that the proposed scheme is suitable for the on-demand disclosure of private data in the supply chain. Compared with the Quorum scheme, our scheme greatly reduces the communication cost of data in the interactive protocol.