Block chain-based fairness file distribution method and system, and storage medium

Abstract

The invention discloses a block chain-based fairness file distribution method and system and a storage medium, and the method comprises the steps: adding a storage node into a processing pool or an isolation pool of a distributed storage network based on a preset credibility threshold, and recording the adding information of the storage node into the block chain; obtaining the number of file fragments according to the to-be-stored file; determining a plurality of fragment storage nodes through a fairness file distribution algorithm according to the number of the file fragments; and distributing the file fragments to the plurality of fragment storage nodes. According to the method, the storage nodes are added into the processing pool or the isolation pool of the distributed storage networkbased on the preset credibility threshold value, so that the to-be-stored files cannot be distributed into the isolation pool with low credibility, and the file distribution fairness is improved; besides, file distribution is carried out through a fairness file distribution algorithm, the utilization rate of storage nodes in the peer-to-peer network and the file distribution efficiency are improved, and the method can be widely applied to the technical field of block chains.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a block chain-based fairness file distribution method, system and storage medium. Background technique [0002] Blockchain is a distributed ledger and a technical solution for collectively maintaining a reliable database through decentralization and trustlessness. [0003] A hash function is a function that maps data of arbitrary length to data of fixed length. [0004] Jain fairness index: The system fairness algorithm was proposed by Jain et.al in 1984. He proposed the Jain fairness index to calculate the fairness of resources obtained by users in a system. The specific index definition is as follows: Assuming a distributed There are n users in the system sharing a certain network resource, and x i As the system throughput obtained by the i-th user in the system, the Jain fairness index is defined as: [0005] [0006] The above system fairness index can solve the pr...

AI Technical Summary

Problems solved by technology

[0012] (3) For each file fragment x i Make a copy and get a copy of the fragment as x ij , the reason why file fragments need to be copied is because after the file fragments are randomly stored in different nodes, if a certain node fails or malicious behavior occurs, the fragments on this node are lost or damaged and cannot be recovered , resulting in no way to restore the fragment to a complete file;

If the files are distributed to the peer-to-peer network without fair treatment, the degree of decentralization of the distributed storage system originally built on the blockchain will be weakened, and the files may be stored centrally on certain nodes

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