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Algebraic Insights into the Secret Feistel Network (Full version)
High-Degree Indicator Matrix Feistel Network ANF
2016/4/22
We introduce the high-degree indicator matrix (HDIM), an object closely related with both the linear approximation table and the algebraic normal form (ANF) of a permutation. We show that the HDIM of ...
Cryptanalysis of Symmetric Block Ciphers Based on the Feistel Network with Non-bijective S-boxes in the Round Function
block ciphers Feistel network ciphertext-only attack
2012/6/14
We consider ciphertext-only attack on symmetric block ciphers based on the Feistel network with secret S-boxes installed as an additional parameter, like in Soviet GOST 28147-89. In case when S-boxes ...
Cryptanalysis of Symmetric Block Ciphers Based on the Feistel Network with Non-bijective S-boxes in the Round Function
block ciphers Feistel network ciphertext-only attack
2012/3/20
We consider ciphertext-only attack on symmetric block ciphers based on the Feistel network with secret S-boxes installed as an additional parameter, like in Soviet GOST 28147-89. In case when S-boxes ...
Cryptanalysis of Symmetric Block Ciphers Based on the Feistel Network with Non-bijective S-boxes in the Round Function
block ciphers Feistel network ciphertext-only attack
2012/8/28
We consider ciphertext-only attack on symmetric block ciphers based on the Feistel network with secret S-boxes installed as an additional parameter, like in Soviet GOST 28147-89. In case when S-boxes ...
Distinguishing Attacks on a Kind of Generalized Unbalanced Feistel Network
Generalized Unbalanced Feistel Network Integral Distinguisher Non-surjective Distinguisher
2009/7/22
Recently, a new kind of Generalized Unbalanced Feistel Net-
work, denoted as GUFN-n, is proposed by Choy et al. at ACISP 2009.
The advantages of this structure are that it allows parallel computatio...
Cryptographic Properties and Application of a Generalized Unbalanced Feistel Network Structure
Block Ciphers Generalized Unbalanced Feistel Network Differential Probability
2009/6/12
In this paper, we study GF-NLFSR, a Generalized Unbalanced Feistel
Network (GUFN) which can be considered as an extension of the outer function
FO of the KASUMI block cipher.We prove upper bounds fo...