Geodesic
On 2-transitivity of generalized Feistel ciphers
Prikladnaâ diskretnaâ matematika, no. 10 (2009), pp. 24-26.

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Several generalizations of the Feistel scheme are known. In this paper, we introduce a mathematical model including different generalizations of the Feistel scheme. For the described $\upsilon$-generalized Feistel ciphers, we get an accessible lower boundary for the number of rounds under which the 2-transitivity is achieved. 
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     title = {On 2-transitivity of generalized {Feistel} ciphers},
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M. A. Pudovkina. On 2-transitivity of generalized Feistel ciphers. Prikladnaâ diskretnaâ matematika, no. 10 (2009), pp. 24-26. http://geodesic.mathdoc.fr/item/PDM_2009_10_a11/

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