Block chain trading based authority control method and system

Abstract

The invention relates to a block chain trading based authority control method and system. The block chain trading based authority control method comprises the steps of establishing an authority processing system for each node of a block chain network and deploying an intelligent agreement; if an issuing party has encrypted to-be-trade information for decrypting and authorizing at least an authorized party, obtaining public encryption and decryption parameters corresponding to each authorized party by the authority processing system on the issuing node, encrypting a key of the encrypted to-be-traded information through confidential parameters corresponding to the authorized party, and issuing the public encryption and decryption parameters and the confidential parameters in the block chain network by utilizing the intelligent agreement; issuing the to-be-traded information to each node of the block chain network through the intelligent agreement by the authority processing system of the issuing node; and after the authorized node receives the to-be-traded information, decrypting the key of the to-be-traded information by utilizing the decryption parameters by the authority processing system, and decrypting the to-be-traded information based on the decrypted key and the public encryption and decryption parameters. The block chain trading based authority control method and system can efficiently control affair processing authority in the block chain network.

Description

technical field [0001] The present invention relates to the technical field of block chains, in particular to a method and system for controlling rights based on block chain transactions. Background technique [0002] The blockchain is essentially a distributed database, and the information on the blockchain will be shared to all nodes by the P2P (Peer-to-peer, peer-to-peer) network. The problem with this information sharing feature of the blockchain is that if participant A wants to release a product designated to participant B and participant C, then other participants on the blockchain have no right to know any information about this product , without improvement, it is difficult for the blockchain as a distributed database to realize this function. A relatively simple solution in the existing technology is to add permission control to the data call on the smart contract. For example, when participant D wants to read the product information released by participant A thro...

AI Technical Summary

Problems solved by technology

The problem with this information sharing feature of the blockchain is that if participant A wants to release a product designated to participant B and participant C, then other participants on the blockchain have no right to know any information about this product , without improvement, it is difficult for the blockchain as a distributed database to realize this function

A relatively simple solution in the existing technology is to add permission control to the data call on the smart contract. For example, when participant D wants to read the product information released by participant A through API (Application Programming Interface, Application Programming Interface) , the smart contract finds that D does not have the specified authority and rejects the application. However, the problem with this solution is: if the participant D owns the relevant node, he can directly read the information in the non-encrypted state in the node database, so that the participant D The product information published by participant A can still be read, unless tamper-proof hardware protection is adopted or central management (such as cloud management) is implemented for nodes, otherwise it is difficult to implement information protection through authorization

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