History of the Playfair Cipher | Hankering for History

24 use the playfair cipher to encipher the message the key is hidden under the door pad the secret key can be made by filling the first and part of the second row with the word guidance and 36852

The Caesar cipher

Playfair Cipher in network security | Playfair cipher example | playfair cipher encryption example | playfair cipher in cryptography

What is Hill Cipher?