A blockchain-based smart IoT device authentication method and system

A technology of IoT devices and networking devices, applied in the field of IoT, can solve the problems of manpower password and certificate storage costs, low degree of automation of the authentication process, difficulty in certificate management, etc., to achieve strong security, save time, and reduce the amount of calculation Reduced effect
CN113162768BActive Publication Date: 2022-07-22UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2022-07-22

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Abstract

The invention discloses a blockchain-based intelligent IoT device authentication method and system. The method includes: the device generates its own identity mark based on a physical unclonable function, and uses the own identity mark as a public key of a searchable encryption algorithm , generate the ciphertext; the registration center generates the private key of the searchable encryption algorithm corresponding to the device based on the smart contract and the distributed ledger database, and assigns the group name and the public-private key pair of the ring signature algorithm to the device to complete the registration of the device; the certification center Using smart contracts, searchable encryption is performed based on the identity of the device to realize the personal login authentication of the device; and the group login authentication of the device is realized based on the ring signature algorithm. The invention can realize effective combined authentication for intelligent Internet of things equipment, automatic execution of intelligent contracts, reduce the problem of excessive resource consumption, and the new cryptographic algorithm has higher calculation efficiency and can ensure the security of the system.
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Description

technical field

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

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

[0003] 1) 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 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) Identity-based signature (IBS, identity-based signature) scheme, this scheme realizes the distribution of dev...

Claims

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