Group broadcast authentication method based on block chain and PUFs

Abstract

The invention discloses a group broadcast authentication method based on a block chain and PUFs (Physical Unclonable Frameworks). The method comprises a registration stage, an authentication stage and an updating stage, the registration stage comprises registration of a block chain node, registration of a device end and registration of a group; in the authentication stage, key negotiation and bidirectional authentication between a device end and a block chain node are completed; the authentication of the block chain node to the equipment end comprises two steps of authentication including initial authentication and secondary authentication, and the authentication of the equipment end to the block chain node is one-time authentication; in the updating stage, updating of authentication parameters of the equipment end and updating of registration parameters of the equipment end on the block chain are completed by the block chain node; according to the method, the PUFs and the block chain technology are combined, the single-point failure problem existing in the PUFs and the traceability of broadcast messages are solved, meanwhile, the physical aggression resistance of the equipment end is guaranteed, anonymity is achieved through the anonymous ID, and expansibility management and lightweight authentication of group members are achieved.

Description

technical field [0001] The invention relates to a group broadcast authentication method based on blockchain and PUFs, belonging to the field of information security. Background technique [0002] With the continuous innovation and increasing number of IoT applications, the automation and intelligence of IoT systems also means that data exchange will be carried out directly between different sensors and other smart electronic devices, such as wearable devices in IoT systems, Car accessories and smart home devices. As an essential message sharing technology, it is different from unicast, broadcast and multicast because of its one-to-many characteristics, it is more suitable for large-scale IoT scenarios, widely used in intelligent transportation, medical monitoring, emergency broadcasting and other scenarios and can effectively Handle the explosion of data. Moreover, with the continuous expansion of the application scale of the Internet of Things and the explosive growth of ...

AI Technical Summary

Problems solved by technology

That means they are vulnerable to physical and cloning attacks, which can easily lead to unauthorized access, use, disclosure, interruption, modification, inspection, recording or destruction of private messages

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