Internet of Things identity authentication method based on blockchain

Abstract

The invention belongs to the technical field of identity authentication, and specifically provides an Internet of Things identity authentication method based on a blockchain. The basic steps of the Internet of Things identity authentication method provided by the invention are as follows: an entity calls an intelligent contract by means of an own key to accomplish the registration in an identity authentication system; each entity can call the intelligent contract to set an access strategy so as to limit the access of other entities to the entity and to form a trust network of the Internet of Things; when one entity accesses the data of the other entity, the entity needs to apply for a token from the intelligent contract to obtain the access qualification, and the intelligent contract checks whether the entity initiating the access has the access qualification according to the access strategy set by the accessed entity in the trust network between the entities, and if yes, the intelligent contract generates the token and returns the token to the entity initiating the access; or otherwise, the intelligent contract returns token application failure information. By adoption of the method provided by the invention, a centralized authority mechanism in an identity authentication process is removed, malicious tampering of records of identity authentication and data access is prevented, a strategy execution result is not manually manipulated, and a fair, transparent and credible execution environment is provided for the identity authentication of the entities in the Internet of Things.

Description

technical field [0001] The invention belongs to the technical field of identity authentication, and in particular relates to an identity authentication method based on a block chain. Background technique [0002] In recent years, with the rapid development of IoT technology, the number of devices connected to the network has also exploded. According to Gartner's statistics, there were 6.4818 billion IoT devices in the world in 2016, and in 2017 the scale of the IoT has reached 8.3806 billion, an increase of nearly one-third a year. With the rapid increase of the scale of the Internet of Things, the identity authentication of the devices in the Internet of Things is also getting more and more attention. [0003] Most of the current mainstream identity authentication methods are centralized, and there are many defects in these methods. First, centralized servers are vulnerable to attack. After a server attack, the server may be paralyzed, data leakage or identity authentica...

AI Technical Summary

Problems solved by technology

However, it does not submit the process of entity identity authentication to the blockchain for execution through smart contracts, and cannot decentralize the authentication process. At the same time, the patent cannot support authentication scenarios including multi-factor authentication, access transfer, etc.

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