METHOD AND SERVER FOR MANAGING USER IDENTITY USING BLOCKCHAIN NETWORK AND METHOD AND TERMINAL FOR VERIFYING USER USING USER IDENTITY BASED ON BLOCKCHAIN NETWORK

摘要

The present invention relates to a method and a server for managing user identity by using a blockchain network and a method and a terminal for authenticating a user by using user identity based on a blockchain network. The method for managing user identity by using a blockchain network comprises the steps of: checking, by a specific authentication institution server, a specific user self-claim registered in a distributed ledger by using a specific user self-claim ID to obtain a second specific user specific value included in the specific user self-claim; and obtaining, by the specific authentication institution server, a specific user specific identity claim ID corresponding to a specific user specific identity claim registered in the distributed ledger by using a specific user specific identity claim registration transaction ID and transmitting a specific claim signature value made by signing at least the specific user specific identity with a private key of the specific certification institution server and the specific user specific identity claim ID to a specific user terminal.