APPARATUS FOR MANAGING GROUP OF NODES WHICH COMPRISES TRANSACTION OF DUAL SIGNATURE BASED ON GROUP KEY ON BLOCKCHAIN NETWORK AND COMPUTING APPARATUS

摘要

The node group management apparatus according to an embodiment manages a first group to which some nodes belong to a node constituting a blockchain network sharing a distributed database, and all nodes participating in the blockchain network are secret and public keys, respectively. Having-a communication interface communicating with the blockchain network; One or more memories storing information about the first group of nodes and instructions for performing an operation of the processor, wherein information about the first group of nodes includes the public key of each node of the first group; And if the first group of nodes is connected to the one or more memories to operate through the command, and the first group of nodes creates a transaction, the transaction is signed based on the information on the first group of nodes along with the signature of the secret key. And one or more processors to generate a group secret key to perform additional signing of the transaction and distribute the group secret key to the first group so that the nodes of the first group have in common.