Analysis of Ascon, DryGASCON, and Shamash Permutations

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International Journal of Information Security Science
Volume:9 Issue:3
Analysis of Ascon, DryGASCON, and Shamash Permutations

Analysis of Ascon, DryGASCON, and Shamash Permutations

Authors : Cihangir TEZCAN

Pages : 172-187

View : 38 | Download : 14

Publication Date : 2020-09-01

Article Type : Research Paper

Abstract :Ascon, DryGASCON, and Shamash are submissions to NIST`s lightweight cryptography standardization process and have similar designs. We analyze these algorithms against subspace trails, truncated differentials, and differential-linear distinguishers. We provide probability one 4-round subspace trails for DryGASCON-256, 3-round subspace trails for \DryGASCON-128, and 2-round subspace trails for \Shamash permutations. Moreover, we provide the first 3.5-round truncated differential and 5-round differential-linear distinguisher for DryGASCON-128. Finally, we improve the data and time complexity of the 4 and 5-round differential-linear attacks on Ascon.
Keywords : Lightweight cryptography, Authenticated encryption, Cryptanalysis

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