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The Improbable Differential Attack: Cryptanalysis of Reduced Round CLEFIA
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Date
2010-01-01
Author
Tezcan, Cihangir
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In this paper we present a new statistical cryptanalytic technique that we call improbable differential cryptanalysis which uses a differential that is less probable when the correct key is used. We provide data complexity estimates for this kind of attacks and we also show a method to expand impossible differentials to improbable differentials. By using this expansion method, we cryptanalyze 13, 14, and 15-round CLEFIA for the key sizes of length 128, 192, and 256 bits, respectively. These are the best cryptanalytic results on CLEFIA up to this date.
Subject Keywords
Cryptanalysis
,
Improbable differential attack
,
CLEFIA
URI
https://hdl.handle.net/11511/32024
DOI
https://doi.org/10.1007/978-3-642-17401-8_15
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Graduate School of Informatics, Conference / Seminar
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C. Tezcan, “The Improbable Differential Attack: Cryptanalysis of Reduced Round CLEFIA,” 2010, vol. 6498, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32024.