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10-Round Feistel is Indifferentiable from an Ideal Cipher [PDF]
Lecture Notes in Computer Science, 2016 We revisit the question of constructing an ideal cipher from a random oracle. Coron et al.i¾?Journal of Cryptology, 2014 proved that a 14-round Feistel network using random, independent, keyed round functions is indifferentiable from an ideal cipher, thus demonstrating the feasibility of such a transformation. Left unresolved is the number of rounds of
Katz Jonathan, Dachman-Soled Dana
exaly +6 more sources
Throwing Boomerangs into Feistel Structures [PDF]
IACR Transactions on Symmetric Cryptology, 2022 Automatic tools to search for boomerang distinguishers have seen significant advances over the past few years. However, most previous work has focused on ciphers based on a Substitution Permutation Network (SPN), while analyzing the Feistel structure is
Hosein Hadipour +2 more
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How to Build an Ideal Cipher: The Indifferentiability of the Feistel Construction [PDF]
Journal of Cryptology, 2014 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yannick Seurin +2 more
exaly +4 more sources
Truncated Differential Attacks on Contracting Feistel Ciphers
IACR Transactions on Symmetric Cryptology, 2022 We improve truncated differential attacks on t-branch contracting Feistel ciphers with a domain size of Nt. Based on new truncated differentials, a generic distinguisher for t2 + t − 2 rounds using O(Nt−1) data and time is obtained.
Tim Beyne, Yunwen Liu
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Generalized Feistel Structures Based on Tweakable Block Ciphers
IACR Transactions on Symmetric Cryptology, 2022 A generalized Feistel structure (GFS) is a classical approach to construct a block cipher from pseudorandom functions (PRFs). Coron et al. at TCC 2010 instantiated a Feistel structure with a tweakable block cipher (TBC), and presented its provable ...
Kazuki Nakaya, Tetsu Iwata
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On Boomerang Attacks on Quadratic Feistel Ciphers
IACR Transactions on Symmetric Cryptology, 2023 The recent introduction of the Boomerang Connectivity Table (BCT) at Eurocrypt 2018 revived interest in boomerang cryptanalysis and in the need to correctly build boomerang distinguishers.
Xavier Bonnetain, Virginie Lallemand
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Feistel Ciphers Based on a Single Primitive
Lecture Notes in Computer Science, 2023 Tetsu Iwata, Iwata Tetsu
exaly +2 more sources
IEEE Access, 2021 Machine learning has recently started to gain the attention of cryptographic researchers, notably in block cipher cryptanalysis. Most of these machine learning-based approaches are black box attacks that are cipher-specific.
Ting Rong Lee +4 more
doaj +1 more source
Design and cryptanalysis of a new iterative structure
IET Information Security, 2023 This study proposes a new iterative structure called the L‐Feistel structure, which shares similar procedures between encryption and decryption and could unify the Feistel structure and the Lai‐Massey structure. This paper evaluates the security of the L‐
Jiajie Liu, Bing Sun, Chao Li
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Construction of diffusion layers based on cipher structures
网络与信息安全学报, 2017 Taked diffusion layers of block cipher algorithms as the research object,lightweight diffusion layers were constructed by two cipher structures based on the characteristics of diffusion layers of lightweight block cipher algorithms,which were the ...
Peng-fei LI
doaj +3 more sources