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Quantum related-key differential cryptanalysis

  • 01-07-2024
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Abstract

The document delves into the transformative effects of quantum computation on cryptanalysis, particularly focusing on quantum-related key differential cryptanalysis. It introduces a two-stage quantum attack that leverages the Bernstein–Vazirani algorithm and quantum counting and maximum algorithms to identify related-key differential characteristics and recover keys. The first stage provides an exponential acceleration, while the second stage offers an O(K) level acceleration, challenging the prevailing quantum-safe symmetric key doubling assumption. The paper also compares the efficiency of quantum and classical related-key differential cryptanalysis, highlighting the significant advantages of the quantum approach.

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Title
Quantum related-key differential cryptanalysis
Authors
Hongyu Wu
Xiaoning Feng
Publication date
01-07-2024
Publisher
Springer US
Published in
Quantum Information Processing / Issue 7/2024
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-024-04472-0
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