TRUST-BASED SHARD DISTRIBUTION APPARATUS AND METHOD FOR FAULT TOLERANT BLOCKCHAIN NETWORKS

摘要

The present invention is to obtain the reliability of each of a plurality of nodes by receiving the consensus result obtained by combining the result of validating the block from each of a plurality of nodes of the blockchain network with the validation result verified by other nodes. The reliability calculator and the plurality of nodes are distributed to a predetermined number of shards, but the shard reliability expressed as the sum of the reliability of the nodes distributed to each of the plurality of shards is calculated, and the deviation between the calculated reliability of the plurality of shards is minimized. Including a shard distribution unit that distributes multiple nodes, it is possible to prevent malicious nodes from being concentrated on a specific shard, so it is possible to suppress the collusion of malicious nodes in each shard to not only attack abnormal consensus, but also to modify the opinions of other nodes while normalizing consensus. It is possible to provide a shard distribution device and method of a blockchain network that can prevent passive attacks.