Internet of Things equipment identity authentication method based on block chain

Abstract

The invention discloses an Internet of Things device identity authentication method based on a block chain, and belongs to the field of Internet of Things. According to the method, an emerging block chain technology is adopted to construct an identity authentication alliance block chain suitable for Internet of Things equipment; in the registration stage, an Internet of Things device identifier and a public key pair (ID, PK) are stored in a block chain in a block chain transaction mode, and in the authentication stage, the public key PK in the registration process is used for authenticating the Internet of Things device identifier ID. According to the method, the authentication process can be reduced, the authentication efficiency can be improved, the cost requirement on the Internet of Things equipment is low, the method does not depend on a certain specific third-party mechanism, and tamper-proofing and traceability of the identifier and the public key pair (ID, PK) are ensured.

Description

technical field [0001] The invention relates to the technical field of the Internet of Things, in particular to a method for authenticating the identity of an Internet of Things device based on a block chain. Background technique [0002] Blockchain is a decentralized shared ledger that combines data blocks into a specific data structure in a chronological order and uses cryptography to ensure that data cannot be tampered with or forged. It can safely store simple, There is a sequence relationship and verifiable data information. Blockchain technology uses encrypted chain block structure to verify and store data, and uses distributed node consensus algorithm to generate and update data. [0003] IoT device identity authentication means that when IoT devices are connected to the IoT system, the identities of these devices need to be identified to confirm their legitimacy. Device authentication is the first step in the security of the entire Internet of Things. For legitimat...

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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