A blockchain-based IoT device identity authentication method

Abstract

The invention discloses a method for authenticating the identity of an Internet of Things device based on a block chain, belonging to the field of the Internet of Things. This method adopts emerging blockchain technology to build an identity authentication alliance blockchain suitable for IoT devices, and stores the IoT device identification and public key pair (ID, PK) in the form of blockchain transactions in the registration phase. In the block chain, the public key PK at the time of registration is used to authenticate the IoT device identification ID in the authentication phase. The present invention can not only reduce the authentication process, improve the authentication efficiency, and has lower overhead requirements for IoT devices, but also does not depend on a specific third-party organization, ensuring the identity and public key pair (ID, PK). Tampering, traceability.

Description

Technical field [0001] The present invention relates to the field of Internet of Things, in particular, to a block-based network-based network-based identity authentication method. Background technique [0002] The block chain is a combination of data blocks into a specific data structure in a chain in order, and uses cryptographic methods to ensure that data is not tamper and unable to detritionally-depth share, it is possible to securely store simple. There is a relationship, the data information that can be verified. Block chain technology utilizes the encrypted chain block structure to verify and store data, and utilize distributed node consensus algorithms to generate and update data. [0003] IoT device identity authentication refers to identification of the identification of these devices to identify identification of these devices to confirm its legitimacy. Equipment certification is the first step in the safety of the Internet. For legal equipment, the identity authentic...

AI Technical Summary

Problems solved by technology

Symmetric key-based authentication needs to preset a shared symmetric key, and there are problems such as key distribution and key leakage; authentication based on public key infrastructure has a cumbersome certificate exchange process, and it also faces the possibility that the certificate authority may appear. In the case of a single point of failure; authentication based on identity codes requires complex calculations such as two-wire pairs, and the calculation overhead is relatively large

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