Intelligent Internet of Things equipment authentication method and system based on blockchain

A technology for Internet of Things devices and Internet-connected devices, applied in the field of Internet of Things, can solve the problems of human password and certificate storage costs, low degree of automation of the authentication process, difficult certificate management, etc., to achieve strong security, time saving, and computational complexity. reduced effect
CN113162768AActive Publication Date: 2021-07-23UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2021-07-23

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Abstract

The invention discloses an intelligent Internet of Things device authentication method and system based on a blockchain, and the method comprises the steps that equipment generates an identity label of the equipment based on a physical unclonable function, takes the identity label of the equipment as a public key of a searchable encryption algorithm, and generates a ciphertext; a registration center generates a private key of a searchable encryption algorithm corresponding to the equipment based on the smart contract and the distributed account book database, and distributes a public and private key pair of a group name and a ring signature algorithm to the equipment to complete registration of the equipment; an authentication center performs searchable encryption based on the identity label of the equipment by using an intelligent contract to realize personal login authentication of the equipment; and group login authentication of the equipment is realized based on a ring signature algorithm. According to the method, effective combined authentication can be implemented on the intelligent Internet of Things equipment, the intelligent contract is automatically executed, the problem of excessive resource consumption is reduced, the novel cryptographic algorithm is higher in calculation efficiency, and the safety of the system can be better ensured.
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Description

technical field

[0001] The invention relates to the field of the Internet of Things, in particular to a blockchain-based intelligent Internet of Things device authentication method and system. Background technique

[0002] Currently, there are three common schemes for IoT identity authentication:

[0003] 1) An identity authentication scheme based on public key infrastructure (PKI, public key infrastructure). In this scheme, the certificate authority assigns a digital certificate to each device, and the digital certificate contains the public key of the device and the digital certificate of the certificate authority. sign. The device side uses its own private key to generate a message signature, and the public key is used by the receiver to verify the signature. This scheme will not reveal the true identity of the device during the verification process.

[0004] 2) An identity-based signature (IBS, identity-based signature) scheme, which implements the distribution of devi...

Claims

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