男生如果明白
发表于 2025-3-28 15:12:05
http://reply.papertrans.cn/27/2646/264507/264507_41.png
勤勉
发表于 2025-3-28 19:08:39
Die Arzneizubereitungen des D. A.Among the encryption steps we find prominently two large classes: substitution and transposition. They are both special cases of the most general encryption step .. → ... We shall start by looking at several kinds of substitution and turn our attention to transposition in Chapter 6.
进取心
发表于 2025-3-28 23:09:24
http://reply.papertrans.cn/27/2646/264507/264507_43.png
过渡时期
发表于 2025-3-29 04:28:23
https://doi.org/10.1007/978-3-662-43014-9A linear (geometrically ‘affine’) substitution is a special polygraphic substitution. The injective encryption step of a polygraphic block encryption.with relatively large . and . is restricted in a particular way.
漂亮
发表于 2025-3-29 09:24:30
https://doi.org/10.1007/978-3-642-91144-6Monoalphabetic encryption uses some encryption step (possibly a polygraphic one) over and over. All the encryption steps treated in Chapters 3–6 can be used monoalphabetically—this was tacitly assumed in the examples.
Ebct207
发表于 2025-3-29 12:46:12
R. P. Meyer Dr. med.,F. Moro Dr. med.The polyalphabetic encryption methods discussed so far use a key for encryption and a key for decryption. Crypto systems with self-reciprocal encryption steps use the same key for both, of course.
Contort
发表于 2025-3-29 17:17:29
http://reply.papertrans.cn/27/2646/264507/264507_47.png
Regurgitation
发表于 2025-3-29 23:03:16
http://reply.papertrans.cn/27/2646/264507/264507_48.png
爱花花儿愤怒
发表于 2025-3-30 03:37:53
Encryption Steps: Polygraphic Substitution and CodingSimple (monographic) substitution requires a complete decomposition of the plaintext in single characters. A polygraphic substitution allows polygraphic encryption steps, i.e., encryption steps of the form .. → .. with . > 1.
搜集
发表于 2025-3-30 06:52:31
Encryption Steps: Linear SubstitutionA linear (geometrically ‘affine’) substitution is a special polygraphic substitution. The injective encryption step of a polygraphic block encryption.with relatively large . and . is restricted in a particular way.