Lightweight Physical Layer Aided Key Agreement and Authentication for the Internet of Things^†

Round 1

Reviewer 1 Report

The authors present a paper concerning lightweight physical layer aided authentication and key agreement (PL-AKA) protocol in the internet of things (IoT).

 The work is well supported with theoretical expressions and a good explanation regarding the proposed approach.

 It will be interesting that the authors specify with more detail the preformed tests and the used hardware.

 

 

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

 The authors present a lightweight physical layer aided authentication and key agreement (PL-AKA) protocol for the internet of things (IoT) applications. Simulation and experimental studies are conducted and the results verify the proposals. The structure is well organized and presentation good as well. 

I suggest to give give detailed description of the simulation setup, including the hardware and software environment. 

 

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

Interesting paper, well written. On the other hand, the conclusions are not fully clear, at least to me appear contradictory, when compared with the messages provided in the Abstract. In fact, from row 319, it reads: "There are some challenges discouraging the proposed scheme from practical implementation such as high ’Gray’ probability and trade off between security and reliability. To solve this, machine learning-based PHY feature extraction or employment of multiple PHY attribute can be future works." In the Abstract, from row 9, it reads "Therefore, the proposed lightweight PL-AKA has the potential for practical and efficient implementation of large-scale IoT networks." Please clarify the practical applicability and provide more details about next steps.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf