Integrating Lorenz Hyperchaotic Encryption with Ring Oscillator Physically Unclonable Functions (RO-PUFs) for High-Throughput Internet of Things (IoT) Applications

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

This paper presented an unconditionally-secure system using through the combination of True Random Number Generators (TRNG) for unique seed values, and four dimensional Lorenz Hyper Chaotic Systems. This work has certain academic reference significance, its analysis and derivation are correct, but there are many defects in language expression. My comments are as follows:

 

1. The motivation of this study needs to be further highlighted in the Introduction, preferably with a bulleted or enumerated list.

2. Is the function F() in formulas (10) - (13) the same as the function F() in formula (1)? The author needs to explain here.

3. The chaotic behaviour of the four-dimensional Lorenz Hyper Chaotic System 

should be preliminarily demonstrated using phase diagrams and Lyapunov exponents.

4. Regarding the results of the NIST test suite, the author should provide specific datasheets showing P-values and pass rates.

5. Except for the security, running time is also important. What is the time cost of the proposed encryption system ? Necessary encryption time overhead data needs to be provided.

6. What are the shortcomings of the proposed solution in this article? Future research prospects should be proposed in the conclusion section.

Comments on the Quality of English Language

The meaning expressed in English in this paper can basically be understood. 

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

Dear Authors,

 

Find attached file.

Comments for author File: Comments.pdf

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

The paper presents an FPGA implémentation of 4-d Lorenz system for encryption purpose.

However; the continuous time systems show some Lacks in encryption applications such as :

Resulution method and step parameter

Chaotic behavior and its influence on randomness property.

Also, the proposed encryption scheme is not compared to similar works in order to show the performance.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

The authors have taken into account the observations and comments made previously. Therefore, I recommend to accept this manuscript.

Comments on the Quality of English Language

The English expression is clear and can basically be understood.

Author Response

Thank you for your approval of our manuscript. We have no other edits related to your comments at this time.

Reviewer 2 Report

Comments and Suggestions for Authors

Can be published.

Author Response

Thank you for your approval of our manuscript. We have no other edits related to your comments at this time.

Reviewer 3 Report

Comments and Suggestions for Authors

Regarding this paper, the idea may be good, but the problem is the use of 4 d Lorenz system, which is considered as less suitable for encryption purpose. 

https://www.worldscientific.com/doi/abs/10.1142/S0218126621502807

Author Response

Please see attachment.

Author Response File: Author Response.pdf

Round 3

Reviewer 3 Report

Comments and Suggestions for Authors

The proposed version is considered better in terms of contribution and explanation.