Method for exchanging data between nodes and establishing node digital identity

Abstract

The invention discloses a method for exchanging data between nodes. The method comprises the following steps: when an opposite alliance security file system node reads or writes data to a current alliance security file system node, digital identity information, sent by the opposite alliance security file system node, of the opposite alliance security file system node is received; if the node digital identity verification module of the current alliance security file system node finds out the digital identity label of the opposite alliance security file system node in the pre-cached digital identity label, the digital signature of the node of the opposite-side alliance security file system is decrpted by using a pre-cached public key of the node of the opposite-side alliance security file system through a node digital identity verification module to obtain verification information corresponding to the digital signature of the node of the opposite-side alliance security file system; and when the digital identity information of the node of the consortium security file system of the opposite side is verified to be correct, a task of reading or writing data by the node of the consortium security file system of the opposite side is performed.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a method for exchanging data between nodes and establishing node digital identities. Background technique [0002] Blockchain is a peer-to-peer secure and credible value storage and delivery network system with broad development prospects. The security and trustworthiness of the blockchain depend to a large extent on the characteristics of the blockchain consensus mechanism, that is, each peer node has the same ledger, performs the same logical calculations, and stores the same content. It is precisely because of this feature that the blockchain generally requires a large storage space, because each node needs to store the same data. Even for a node, it takes a lot of space, because the node needs to record the data of the entire network. In particular, the public chain is a global network, and with the continuous growth of transaction business, the storage space re...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a method for exchanging data between nodes and establishing a digital identity for nodes, which is used to solve the problem of controlling data write and read permissions through the IPFS file system in the prior art. The user of the file system node has read and write permissions to the file, but cannot prevent other file system nodes from writing data to the current file system node, nor can it prevent other file system nodes from reading the data of the current file system node

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