Results 161 to 170 of about 22,520 (195)
Some of the next articles are maybe not open access.
Improved Integral Attack on Generalized Feistel Cipher
2020Division property is a generalized integral property proposed by Todo in Eurocrypt 2015. Utilizing automated tools such as SAT and MILP, the complexity to search for integral distinguisher by division property was greatly reduced. Based on division property and automated tools, Derbez et al.
Zhichao Xu, Hong Xu, Xuejia Lai
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Generic Attacks on Generalized Feistel Ciphers
2017Type-1, type-2 and type-3 and alternating Feistel schemes, are described by Zhen, Matsumoto, and Imai (On the construction of block ciphers provably secure and not relying on any unproved hypotheses, Springer, Heidelberg, 1990, pp. 461–480) (see also Hoang and Rogaway, On generalized Feistel networks, Springer, Heidelberg, 2010, pp. 613–630).
Jacques Patarin +2 more
openaire +1 more source
Generic Attacks on Classical Feistel Ciphers
2017In this chapter, we will give a complete description of best known attacks on classical Feistel ciphers.
Jacques Patarin +2 more
openaire +1 more source
SCENERY: a lightweight block cipher based on Feistel structure
Frontiers of Computer Science, 2021In this paper, we propose a new lightweight block cipher called SCENERY. The main purpose of SCENERY design applies to hardware and software platforms. SCENERY is a 64-bit block cipher supporting 80-bit keys, and its data processing consists of 28 rounds. The round function of SCENERY consists of 8 4 × 4 S-boxes in parallel and a 32 × 32 binary matrix,
Jingya Feng, Lang Li 0002
openaire +1 more source
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
openaire +2 more sources
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 ...
openaire +3 more sources
SVHF: A Lightweight Stream Cipher Based on Feistel and OFB
2021For the demand of the resource constrained mobile terminal to the lightweight cipher, this paper presents a new lightweight stream cipher, which is based on the Feistel and OFB mode called SVHF. Similar to many other lightweight stream ciphers, the key-stream size of SVHF is 128-bit while the IV is specified to be 128 bits.
Yuhua Huang +4 more
openaire +2 more sources
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
openaire +4 more sources