Conclusion
In this study, we have developed a neural network aimed at enhancing the precision of neural distinguishers, demonstrating its capability to surpass DDT-based distinguishers in certain rounds. To extend the scope of our key recovery attack to additional rounds, we have diligently focused on improving both classical differentials and neural distinguishers. Consequently, we have successfully executed practical key recovery attacks on SIMECK32/64, effectively advancing the practical attack threshold by two additional rounds, allowing us to reach up to 17 rounds.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant Nos. 62172319, 62172427), the Fundamental Research Funds for the Central Universities (No. QTZX23090) and the Postgraduate Scientific Research Innovation Project of Hunan Province (No. CX20220016).
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Zhang, L., Lu, J., Wang, Z. et al. Improved differential-neural cryptanalysis for round-reduced SIMECK32/64. Front. Comput. Sci. 17, 176817 (2023). https://doi.org/10.1007/s11704-023-3261-z
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DOI: https://doi.org/10.1007/s11704-023-3261-z