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Quantum Information Processing

Quantum cryptanalysis on Feistel variants in related-key settings

  • 01-11-2025
Published in:
Authors
Xiaoyu Wang
Siwei Chen
Zejun Xiang
Shasha Zhang
Xiangyong Zeng
Published in
Quantum Information Processing | Issue 11/2025

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Abstract

This article examines the post-quantum security of cryptosystems, focusing on quantum cryptanalysis of Feistel variants in related-key settings. It explores the impact of quantum computing on cryptographic protocols, particularly the Feistel structure and its variants, which are widely used in block cipher design. The article introduces a new general method for constructing periodic functions that quantum related-key distinguishers can utilize, significantly advancing the field. It also applies this technique to various generalized Feistel structures, including SM4-like, MARS-like, and Type-1/2/3 generalized Feistel structures, providing novel insights and contributing to the ongoing research in post-quantum cryptography. The article concludes by discussing the practical feasibility of these quantum related-key distinguishers and the need for further investigation in real-world implementations.
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Title
Quantum cryptanalysis on Feistel variants in related-key settings
Authors
Xiaoyu Wang
Siwei Chen
Zejun Xiang
Shasha Zhang
Xiangyong Zeng
Publication date
01-11-2025
Publisher
Springer US
Published in
Quantum Information Processing / Issue 11/2025
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-025-04975-4
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