讨人喜欢
发表于 2025-3-25 05:31:20
Encryption Steps: Linear SubstitutionA linear (geometrically ‘affine’) substitution is a special poly graphic substitution. The injective encryption step of a polygraphic block encryption .with relatively large . and . is restricted in a particular way.
Meander
发表于 2025-3-25 10:47:24
Composition of Classes of MethodsLet us recall that an encryption . : .* ⇢ .* is usually finitely generated by a cryptosystem . Let .* denote the set of all encryptions defined in this way by .. An encryption method . is a subset of .*. .. indicates the subset of periodic encryptions with period ., .. the subset of encryptions with non-computable keys.
打算
发表于 2025-3-25 15:09:44
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喃喃而言
发表于 2025-3-25 16:36:28
Anatomy of Language: PatternsLanguage contains an internal frame of regularities that are hard to extirpate. Particularly resistant are repeated patterns.
Observe
发表于 2025-3-25 23:54:38
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CHIP
发表于 2025-3-26 01:17:53
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破布
发表于 2025-3-26 04:59:05
https://doi.org/10.1007/978-3-663-09604-7s its elements. This is for . > 2 a severe restriction. Requiring moreover that in every row and in every column, one occurs just once and thus the elements are zero otherwise, leads to permutation matrices effectuating a mere permutation of the vector space basis.
惊奇
发表于 2025-3-26 09:07:28
https://doi.org/10.1007/978-3-658-24268-8 used monoalphabetically—this was tacitly assumed in the examples. Genuine polyalphabetic encryption requires that the set . of available encryption steps has at least two elements, i.e., that the cryptoSystem . has at least the cardinality . = 2. For the frequent case .. , where . = |.|, the French literature speaks of a ..
表否定
发表于 2025-3-26 16:16:41
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enflame
发表于 2025-3-26 20:51:22
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