BLOCKCHAIN-BASED IDENTITY AUTHENTICATION METHOD, DEVICE, NODE AND SYSTEM

摘要

The present disclosure discloses a method, apparatus, node, system for blockchain-based identity authentication. The method includes: receiving an authentication request sent by an authenticated party node, in the case that it is determined that the identity information of the authenticated party node and identity proof publishing node, and a digital signature of the identity proof publishing node on the identity information of the authenticated party node have been written into a blockchain, verifying the digital signature according to a public key of the identity proof publishing node; after the digital signature passes the verification, determining whether the authenticated party node has mastered a private key corresponding to the public key of the authenticated party node; and in the case that it is determined that the authenticated party node has mastered the private key, it is determined that the authenticated party node passes the identity authentication.