Reply to Arshad, R.; Jalil, M. Comment on “Nizam Chew, L.C.; Ismail, E.S. S-box Construction Based on Linear Fractional Transformation and Permutation Function. Symmetry 2020, 12, 826”

Liyana Chew Nizam Chew; Eddie Shahril Ismail

doi:10.3390/sym15051006

and

¹

Department of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia

²

Cryptography Development Department, CyberSecurity Malaysia, Cyberjaya 63000, Selangor, Malaysia

^*

Author to whom correspondence should be addressed.

Symmetry2023, 15(5), 1006;https://doi.org/10.3390/sym15051006

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In this reply paper, we provide a response to the comment paper of a comment on “S-box Construction Based on Linear Fractional Transformation and Permutation Function” written by Razi Arshad and Mudassar Jalil [1]. They pointed out that the polynomial

P (t) = t^{8} + t^{4} + t^{3} + t^{2} + t + 1

written in Chew et al. [2] is not irreducible. We thank the authors [1] for this observation.

However, we can confirm that there was a typing error in the polynomial. The actual polynomial used in our S-box design was

P (t) = t^{8} + t^{4} + t^{3} + t^{2} + 1

, which is also stated clearly in Table 1 in [2] (refer to the 16th polynomial). We also confirmed and verified that all results obtained in [2] were from the irreducible polynomial

P (t) = t^{8} + t^{4} + t^{3} + t^{2} + 1

.

Conflicts of Interest

The authors declare no conflict of interest.

References

Arshad, R.; Jalil, M. Comment on Nizam Chew, L.C.; Ismail, E.S. S-box Construction Based on Linear Fractional Transformation and Permutation Function. Symmetry 2020, 12, 826. Symmetry 2023, 15, 1005. [Google Scholar] [CrossRef]
Nizam Chew, L.C.; Ismail, E.S. S-box Construction Based on Linear Fractional Transformation and Permutation Function. Symmetry 2020, 12, 826. [Google Scholar] [CrossRef]

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Reply to Arshad, R.; Jalil, M. Comment on “Nizam Chew, L.C.; Ismail, E.S. S-box Construction Based on Linear Fractional Transformation and Permutation Function. Symmetry 2020, 12, 826”

Conflicts of Interest

References

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