Automatic recovery method for blockchain consensus node

Abstract

The invention discloses an automatic recovery method for a blockchain consensus node. The method comprises the following steps that: 1) after crash, a reconnection node broadcasts an initial recovery message and obtains the check point information and the block height of other nodes; 2) the reconnection node receives the reply information of other nodes and counts the check point and the block height of a sender; 3) a target node is found, and the check point information, the block height and the block Hash of the target node are obtained; 4) the reconnection node carries out state transition and is recovered to the check point height of the target node; 5) the reconnection node asks for the message of PQC (Process Quality Control) from the target node; and 6) the reconnection node receives the PQC information returned from the target node, carries out normal consensus processing and repeatedly executes S5) and 6) until the height of the reconnection node block is recovered to normal node height. By use of the method, the problem that crash node reconnection is slow in a traditional PDFT (Practical Byzantine Fault Tolerance) consensus process is solved, and a quick reconnection method for the crash reconnection node on the blockchain is put forward.

Description

technical field [0001] The invention relates to blockchain technology and a PBFT consensus algorithm, in particular to an automatic recovery method for blockchain consensus nodes. Background technique [0002] Blockchain technology, blockchain is a new type of decentralized protocol that can safely store digital currency transactions or other data, information cannot be forged and tampered with, and transaction confirmation on the blockchain is shared by all nodes on the blockchain Complete, the information synchronization between nodes is completed and the consensus algorithm is completed, and the consensus algorithm ensures its consistency. Common consensus algorithms include POW, POS, and PBFT. All transactions confirmed by the blockchain will be written into the block, and each node on the blockchain will continue to participate in the consensus, thus ensuring that the content of the block cannot be forged and tampered with. [0003] PBFT algorithm, PBFT is the abbrevia...

AI Technical Summary

Problems solved by technology

[0004] In the process of PBFT consensus, if a node goes down and reconnects, the internal variables of its consensus module are inconsistent with the current value of the system, resulting in the current node being unable to participate in the consensus

The solution of the traditional PBFT consensus algorithm is to use the checkpoint mechanism and the ViewChange mechanism. However, these solutions require a period of delay, and during this waiting period, the robustness of the system decreases and the possibility of instability increases

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