PUF APPARATUS AND METHOD FOR AUTHENTICATING IoT DEVICE BASED ON PUF

摘要

A PUF-based IoT device authentication apparatus and method are disclosed. In the PUF-based IoT device authentication method according to an embodiment of the present invention, in the PUF-based IoT device authentication method of the PUF-based IoT device authentication apparatus, the PUF-based IoT device authentication apparatus receives a unique identifier from the device. The authentication is requested, and the previously registered initial challenge value is transmitted to the device, so that the device generates a first response value through PUF (Physical Unclonable Function), and uses the initial challenge value and the first response value. Generating a first secret key; The device generates a second response value through a physical unclonable function (PUF) using a pre-registered second challenge value, and determines the first response value, the second response value, and the second challenge value. 1 transmitting a first authentication message generated by encryption with a secret key to the PUF-based IoT device authentication apparatus; Generating, by the PUF-based IoT device authentication apparatus, a second secret key using the initial challenge value and an initial response value corresponding to the initial challenge value; And decrypting, by the PUF-based IoT device authentication apparatus, the first authentication message using the second secret key, and verifying authentication of the device, the second challenge value, and the second response value. do.