Abstract: Play Fairal gorithm has been enhanced in various ways. One of the methods is to increase the confusion rates by transforming the algorithm into 3D-playfair which has four tables of 4×4 and ...

1- The playfair algorithm is based on the use of 5x5 matrix of letters constructed using a keyword (not repeated) 2- Plaintext is encrypted as two letters as a time, according to the following rules: ...

The Playfair Cipher is a digraph substitution cipher that encrypts pairs of letters (digraphs) using a 5x5 matrix generated from a secret key. This practical demonstrates encryption and decryption ...

Abstract: Playfair Square is an encryption scheme that is manual and symmetric in nature. It was invented back in 1854 by Charles Wheatstones. It was so strong and convenient that it was even used in ...