Geodesic
About branchings of cryptographic functions on transformations with the prescribed sign
Prikladnaâ diskretnaâ matematika, no. 1 (2012), pp. 50-54 Cet article a éte moissonné depuis la source Math-Net.Ru

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The conceptions connected with a branching of functions into linear subfunctions is generalized for branchings of special kind functions into the transformations having a prescribed sign. Characteristic estimations for branchings of the functions realized by the generators "$\delta$–$\tau$ steps" and with alternating step are obtained.
Keywords: branching degree, sign in semigroup, "$\delta$–$\tau$ steps" generator, generator with alternating step. 
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     author = {K. G. Kogos and V. M. Fomichev},
     title = {About branchings of cryptographic functions on transformations with the prescribed sign},
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     url = {http://geodesic.mathdoc.fr/item/PDM_2012_1_a2/}
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K. G. Kogos; V. M. Fomichev. About branchings of cryptographic functions on transformations with the prescribed sign. Prikladnaâ diskretnaâ matematika, no. 1 (2012), pp. 50-54. http://geodesic.mathdoc.fr/item/PDM_2012_1_a2/

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[2] Logachëv O. A., Salnikov A. A., Yaschenko V. V., Bulevy funktsii v teorii kodirovaniya i kriptologii, MTsNMO, M., 2004, 470 pp. | MR