A device authentication and key distribution system and method based on a physical unclonable function

Abstract

The invention discloses an equipment authentication and key distribution system and method based on a physical unclonable function. The system comprises a server, an HUB and terminal equipment, The method comprises the steps that before network deployment, manually registering all HUBs and terminal equipment on a server; Deploying network equipment according to the three-layer tree topology structure; carrying out identity authentication and key distribution between the devices, including authentication and key distribution between the server and the HUB and authentication and key distributionbetween the HUB and the terminal device. Based on the PUF, bidirectional authentication and key distribution among the server, the HUB and the terminal equipment can be realized. Different from a traditional secret key pre-storage mode and a public key mode, the method has the advantages that the PUF serves as an authentication factor and a secret key generator, secret key leakage can be prevented, the calculation amount can be reduced, and the method can be widely applied to low-energy-consumption Internet of Things equipment with limited resources.

Description

technical field [0001] The invention belongs to the technical field of lightweight cryptographic protocols and Internet of Things information security, and in particular relates to a device authentication and key distribution system and method based on physical unclonable functions. Background technique [0002] For resource-constrained devices, how to achieve safe and efficient authentication and key distribution, and how to propose a lightweight cryptographic protocol are key technical issues that need to be solved urgently, and are the key to personal privacy protection in the Internet of Things and big data era. important means of implementation. The traditional key distribution system based on public key infrastructure (Public Key Infrastructure, PKI) or digital certificate technology is not suitable for resource-constrained devices such as sensors, radio frequency identification, RFID (Radio Frequency Identification, RFID), and wearable devices. [0003] The emergence...

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Problems solved by technology

[0004] At present, the industry's research on PUF mainly focuses on the physical construction method of PUF, error correction function optimization, etc., and most of the protocol design is aimed at simple two-party communication, but there are few research results on applying PUF to hierarchical and complex network topologies.

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