PUF authentication method and device based on wireless multipath fading channel

Abstract

The embodiment of the invention provides a PUF authentication method and device based on a wireless multipath fading channel. The method comprises the steps that a client sends an access request to abase station; the base station receives the access request, acquires the channel gain and propagation delay difference of the uplink channel, and returns challenge information to the client; the client receives the challenge information, obtains response information corresponding to the challenge information by using a preset PUF, encrypts the response information by using the obtained channel gain and propagation delay difference of the downlink channel to obtain encrypted response information, and sends the encrypted response information to the base station; and the base station receives theencrypted response information, decrypts the encrypted response information by using the channel gain and propagation delay difference of the uplink channel to obtain decrypted response information,authenticates the decrypted response information, and returns authentication success information to the client in the case of authentication success. According to the embodiment of the invention, thesecurity of PUF authentication can be improved.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a PUF authentication method and device based on a wireless multipath fading channel. Background technique [0002] In resource-constrained scenarios, communication devices such as IOT (Internet of things, Internet of Things), sensing devices, RFID (Radio Frequency Identification, radio frequency identification technology) devices and other resource-constrained devices, due to the simple structure and low cost of the device When communicating in an environment, various security issues will be faced. At present, key-based security protocols, such as MD5 (Message Digest Algorithm 5, message digest algorithm version 5), hash Hash and other encryption methods are mainly used to resist various security attacks in wireless communication, but this high computational complexity It is difficult to popularize the encryption method in resource-constrained scenarios, so now some...

AI Technical Summary

Problems solved by technology

[0005] However, the method of using multiple PUFs for XOR combination only changes the hardware structure of the PUF. If there is enough time, there is a high probability that it will be predicted by machine learning, and the security is not high.

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