Transaction privacy protection and hierarchical supervision in blockchain supply chain financial scene

Abstract

The invention discloses a transaction privacy protection and hierarchical supervision method in a blockchain supply chain financial scene. Transaction content is encrypted mainly through a derived keygenerated by a transaction initiator; due to the fact that the transaction sequence flows downwards from the high level, the method can enable the upper level to calculate the symmetric key information of the lower level according to the symmetric key information of the upper level, enable the lower level not to reversely calculate the symmetric key information of the upper level, and enable theuser to check the straight line information capable of flowing through the information in the data linked to the lower level.

Description

Technical field: [0001] The invention belongs to the technical field of financial transaction risk control, and in particular relates to transaction privacy protection and layered supervision under the blockchain supply chain financial scenario. Background technique: [0002] Due to the business nature of the industry, traditional supply chain finance has encountered many difficulties and pain points in the process of practice. First, there are many isolated information islands in the supply chain. It is difficult to unify the ERP system and accounting system among enterprises in the same supply chain. As a result, the information between enterprises is not interoperable, and information isolated islands have begun to emerge, which restricts the verification of many financing information. Second, core enterprise trust cannot be effectively transmitted. According to the contract law, core enterprises sign contracts with first-tier suppliers, but when first-tier suppliers and ...

AI Technical Summary

Problems solved by technology

First, there are many isolated information islands in the supply chain, and it is difficult to unify the ERP system and accounting system among enterprises in the same supply chain, resulting in the incompatibility of information between enterprises, and the emergence of isolated islands of information, which restricts the verification of many financing information

Second, core enterprise trust cannot be effectively transmitted. According to the contract law, core enterprises sign contracts with first-tier suppliers, but when first-tier suppliers and second-tier suppliers sign contracts without the participation of core enterprises, relevant information cannot be transmitted. Core enterprise trust to multi-tier suppliers

Third, banks lack credible business scenarios. Since small and medium-sized enterprises cannot verify the existence of trade relations, it is difficult to obtain bank funds under the existing bank risk control system.

In contrast, the banking industry cannot penetrate the supply chain for customer acquisition and lending

Fourth, financing is difficult and expensive. Under the current market background of the credit sales model, suppliers in the upstream of the supply chain often have a large funding gap. However, without the endorsement of core enterprises, it is difficult for them to obtain high-quality loans from banks.

Fifth, contract performance cannot be completed automatically. Now many agreed settlements are not completed automatically. When multi-level supplier settlement is involved, there are many uncertain factors

[0013] The disadvantages of this technology are: flat blockchain-based transaction key generation and distribution mechanism, that is, using symmetric keys to encrypt transaction data, and using public keys of users authorized to access transaction data to encrypt symmetric keys

When transaction data is authorized to be accessed by n users, n copies of symmetric keys need to be encrypted and then uploaded to the chain. Key management is more complicated

In hierarchical transaction management, the layered protection and supervision capabilities of transaction privacy cannot be realized

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