Blockchain-based picture content consensus method and server

Abstract

A block chain-based picture content consensus method and server provided by the present invention, on the one hand, encrypt the symmetric key by means of asymmetric encryption, so that the key of the encrypted picture can be broadcast to the nodes of the block chain, when When the verification node of the blockchain needs to obtain a symmetric key, the node with authority can use the pre-stored private key to decrypt, and then can decrypt the encrypted picture. On the other hand, the pictures are not directly transmitted during the uplink process of the blockchain, but the hash summary and storage path of the picture are transmitted, and the amount of data interaction between blockchain nodes is small, which can be determined through the hash summary Whether it is an original picture, the encrypted picture can be obtained through the storage path, and then combined with the decryption symmetric key to obtain the original picture, so as to perform subsequent consensus operations on the content of the picture.

Description

technical field [0001] The invention relates to the technical field of blockchain, and more particularly, to a method and server for consensus on image content based on blockchain. Background technique [0002] With the widespread use of blockchain technology, more and more application scenarios need to store unstructured data (such as pictures) in the blockchain. For example, in supply chain finance, business parties want to store relevant order picture information. Into the chain, so that it can be consulted among a certain range of nodes on the chain to confirm the authenticity of the transaction and endorse it. However, the current blockchain system does not support it for several reasons: [0003] 1. Due to the immaturity of blockchain technology, such as the limitation of consensus algorithms and the number of nodes, the transmission of large data in the network will inevitably lead to a decrease in performance efficiency and an increase in response time. For this ori...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the immaturity of the blockchain technology, such as the limitation of the consensus algorithm and the number of nodes, the transmission of large data in the network will inevitably lead to a decrease in performance efficiency and an increase in response time. For this original TPS throughput is not high Blockchain networks are bad news;

[0004] 2. Most of the blockchain systems, especially alliance chain systems, use consensus first and then execute smart contracts. However, in the consensus process, only the signing and verification of communication messages are performed to ensure the security of the messages. Only after the consensus is passed, the business verification is carried out at the stage of executing the smart contract. For example, the blacklist verification is performed on the customer information in the picture combined with the local blacklist system. If the business verification of the picture fails, the transaction execution failure will waste the time and resources spent in the consensus stage

[0005] Therefore, there is currently no technology for image consensus processing

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