How do you know which cipher to use

How do you use cipher?

Use the Cipher security tool to overwrite deleted data
  1. Quit all programs.
  2. Select Start > Run, type cmd, and then press ENTER.
  3. Type cipher /w: folder , and then press ENTER, where folder is any folder in the volume that you want to clean.

What are the 3 ciphers?

Types of Cipher
  • Caesar Cipher. In Caesar cipher, the set of plain text characters is replaced by any other character, symbols or numbers. …
  • Monoalphabetic Cipher. …
  • Homophonic Substitution Cipher. …
  • Polygram Substitution Cipher. …
  • Polyalphabetic Substitution Cipher. …
  • Playfair Cipher. …
  • Hill Cipher.
Ciphertext: W → 22 Dn: (22 – 15) mod 26 Plaintext: 07 → H
Ciphertext: A → 00 Dn: (00 – 15) mod 26 Plaintext: 11 → L
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