Show the character-level encryption, Computer Networking

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Q. Show the Character-level Encryption?

- Substitutional

- Monoalphabetic - simplest form; also called Caesar cipher

- Every character is replaced with another character in the set

- Ke and Kd are the similar and define the added or subtracted value

- Can be broken easily; does not hide repetition

- Polyalphabetic - each occurrence can have a different substitute (ex. Vigenere)

- Based also on position of character in the text

- Frequencies are not preserved; more difficult to break than monoalphabetic


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