Identity authentication method, identity authentication device, and computer-readable medium

Abstract

The embodiment of the present application discloses an identity authentication method,an identity authentication device and a computer-readable medium. The method comprises the following steps: the second user node obtains the first identity mapping information corresponding to the first user address identification from the block chain according to the first user address identification of the first user, the first identity mapping information including the first user address identification, the first public key and the first identity fingerprint; the second user node obtains the first identitymapping information corresponding to the first user address identification from the block chain according to the first user address identification. Encrypting the second public key of the second userby using the first public key, obtaining an authentication request, and broadcasting the authentication request to the whole network; receiving identity feedback information; the feedback informationis verified according to the second user private key and the first identity fingerprint, and if the verification is passed, it is determined that the first user address identification is the user address identification of the first user. As shown in the embodiment of the present application, the user's public key can be distributed securely, efficiently and inexpensively, and the user's identitycan be effectively verified.

Description

technical field [0001] The present application relates to the technical field of blockchain, and in particular to an identity authentication method, an identity authentication device, and a computer-readable medium. Background technique [0002] Blockchain is a series of data blocks associated with cryptographic methods. Each data block contains network transaction information of all blockchain networks in the past for a certain period of time, which is used to verify the validity of its information and generate laundry songs. blocks. In recent years, blockchain technology has received extensive attention and development. Blockchain technology, also known as "distributed ledger technology", is decentralized in essence, and resides in the method of data storage, transmission and certification in a distributed structure, and a distributed database system in which multiple nodes collectively participate. It is not a single technology, but the result of the integration of mult...

AI Technical Summary

Problems solved by technology

However, the cost of the current PKI model is very high. At present, only a few certificate authorities in the world can issue certificates (public keys), and the issuance fees are very high. At present, only large organizations, companies, and websites can afford it;

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