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Generic Attacks on Expanding Feistel Ciphers
2017“Generic” Unbalanced Feistel Ciphers with Expanding Functions are Unbalanced Feistel Ciphers with truly random internal round functions from n bits to (k − 1)n bits with k ≥ 3. From a practical point of view, an interesting property of these schemes is that since n < (k − 1)n and n can be small (8 bits for example), it is often possible to store these ...
Jacques Patarin +2 more
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Generic Attacks on Contracting Feistel Ciphers
2017This chapter deals with generic attacks on unbalanced Feistel ciphers with contracting functions. These ciphers are used to construct pseudo-random permutations from kn bits to kn bits by using r pseudo-random functions from (k − 1)n bits to n bits. The study concerns KPA and NCPA against these schemes with less than 2 kn plaintext/ciphertext pairs and
Jacques Patarin +2 more
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Applying evolutionary computation methods for the cryptanalysis of Feistel ciphers
Applied Mathematics and Computation, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Elena C. Laskari +3 more
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The Security of Feistel Ciphers with Six Rounds or Less
Journal of Cryptology, 2002\textit{M. Luby} and \textit{C. Rackoff} [SIAM J. Comput. 17, 373-386 (1988; Zbl 0644.94018)] showed a method for constructing pseudorandom permutations from pseudorandom functions by using three or four rounds of Feistel networks. The security of their construction as well as others suggested later is measured in terms of the complexity of ...
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LLBC: A Novel Feistel-Based Low-Latency Block Cipher for IoT Applications
IEEE Internet of Things JournalLow-latency has been an important criterion in the design of block ciphers, especially in lightweight cryptography for IoT (Internet of Things) constrained devices to ensure secure real-time data transmission with limited resources.
Yongchao Li +4 more
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SAT-Based Differential Analysis of the Feistel Block Cipher GRANULE
Journal of networking and network applicationsGiven the critical role lightweight block ciphers play in resource restricted scenarios, it is essential to rigorously evaluate their security against classical cryptanalytic methods such as differential analysis.
Ruicheng Feng +3 more
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ALGARADI: a Hybrid SPN–Feistel Block Cipher with Dynamic Round Keys
2025 5th International Conference on Emerging Smart Technologies and Applications (eSmarTA)With the exponential growth of digital data transmission and the increasing sophistication of cyber threats, the demand for secure and efficient encryption algorithms has become more critical than ever.
Thoyazan Sultan Algaradi
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Hybrid Encryption Algorithm Based on Feistel Network and Vigenère Cipher
2025 Eight International Conference on Vocational Education and Electrical Engineering (ICVEE)This paper introduces a hybrid encryption algorithm that addresses the predictable key patterns, limited character support, and low diffusion inherent in the classical Vigenère cipher.
Estelito Jr. Rodrigo Medallada +1 more
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GFLE: a low-energy lightweight block cipher based on a variant of generalized Feistel structure
Physica ScriptaLow-energy lightweight block ciphers are essential for applications with extremely resource-constrained to reduce energy and maintain security. The trade-off between diffusion property and area is a widely studied issue in the design of low-energy block ...
Min Hu, Lang Li, Xiantong Huang, Wei Sun
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Quantum Chosen-Ciphertext Attacks Against Feistel Ciphers
2019Seminal results by Luby and Rackoff show that the 3-round Feistel cipher is secure against chosen-plaintext attacks (CPAs), and the 4-round version is secure against chosen-ciphertext attacks (CCAs). However, the security significantly changes when we consider attacks in the quantum setting, where the adversary can make superposition queries.
Gembu Ito +4 more
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