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IoT Security with PUFs and Cloud Computing

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IoT Security with PUFs and Cloud Computing

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Questions and Answers

What is assumed to be equipped with a PUF in the IoT devices?

Any device attempting to tamper with the PUF

The device itself (correct)

A tamper-resistant sensor

A secure communication module

What is the purpose of the challenge C generated by the server in the setup phase?

To verify the identity of the IoT device

To start the authentication phase

To randomly generate a new challenge for resynchronization

For the next interaction with the device (correct)

What is the master key used for in the proposed scheme?

To generate a one-time alias identity (correct)

To generate a new challenge for resynchronization

To create a secure communication channel

To generate a secret key for the IoT device

What is the purpose of the setup phase in the proposed scheme?

To carry out operations over a secure channel Signup and view all the answers

What is the limitation of the IoT devices in the proposed scheme?

Limited resources Signup and view all the answers

What is sent from the IoT device to the server after receiving the challenges {C,Csyn}?

The PUF outputs R and Rsyn Signup and view all the answers

What is sent to device Di by the server?

{(AID,Kds), (FID,Ksyn)} Signup and view all the answers

What is generated by the device Di when it wants to interact with the server?

A random number Nd Signup and view all the answers

What does the server do after receiving the authentication request message M1?

Locates one-time alias identity AID in its database Signup and view all the answers

What does the device do after receiving the response message M2?

Authenticates the server and decodes Ns = Kds ⊕ N∗ s Signup and view all the answers

What is computed by the device to authenticate the server?

V0 = h(Nd||Kds||N∗ s) Signup and view all the answers

What is computed by the device after authenticating the server?

sk = h(Kds||k||Nd) Signup and view all the answers