The Playfair cipher is an incredibLe code system that is both difficult to decrypt without a computer and easily solvable by hand. You might be familiar with the Cryptoquip in the comics section of a ...
Abstract: Cryptography or message hiding techniques can be a solution to avoid cybercrime. One of the techniques is Playfair Cipher that is a cryptographic algorithm. It can hide messages by forming a ...
Abstract: In this paper, we have proposed an encryption method which is developed by extending Playfair Cipher to make it more secure. Known as Polyalphabetic cipher, Playfair uses a key matrix ...
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