Abstract
As a distributed storage scheme, the blockchain network lacks storage space has been a long-term concern in this field. At present, there are relatively few research on algorithms and protocols to reduce the storage requirement of blockchain, and the existing research has limitations such as sacrificing fault tolerance performance and raising time cost, which need to be further improved. Facing the above problems, this paper proposes a protocol based on Distributed Image Storage Protocol (DISP), which can effectively improve blockchain storage space and reduces computational costs in the help of InterPlanetary File System (IPFS). In order to prove the feasibility of the protocol, we make full use of IPFS and distributed database to design a simulation experiment for blockchain. Through distributed pooling (DP) algorithm in this protocol, we can divide image evidence into recognizable several small files and stored in several nodes. And these files can be restored to lossless original documents again by inverse distributed pooling (IDP) algorithm after authorization. These advantages in performance create conditions for large scale industrial and commercial applications.
Highlights
As a distributed storage scheme, the blockchain network lacks storage space has been a long-term concern in this field
The product of the space occupied by the distributed several files and the total storage space occupied is larger than the original data, so this method is meaningless in the centralized storage environment
Even if a few nodes suffer from malicious attack and cannot be used for recovery of the original image, they can still be reorganized with the help of inverse distributed pooling (IDP) algorithm in this protocol
Summary
As a distributed storage scheme, the blockchain network lacks storage space has been a long-term concern in this field. Through distributed pooling (DP) algorithm in this protocol, we can divide image evidence into recognizable several small files and stored in several nodes These files can be restored to lossless original documents again by inverse distributed pooling (IDP) algorithm after authorization. These advantages in performance create conditions for large scale industrial and commercial applications. Dai et al.[2] proposed a distributed storage framework based on random linear network coding (RLNC) in blockchain In this method, the storage files in a block are divided into smaller blocks and stored in multiple nodes by random linear network coding (RLNC), which reduces the storage space requirement of a single node. As long as there is no response, error or attack on the data on a node, the user can no longer clearly know the content of the file, and the blockchain storage will lose its function as a proof of storage
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