A Variation in the Working of Playfair Cipher

Cryptography has decidedly been in the field of research for decades with the motif of enhancing the security of information exchange. This paper exhibits a variation in the implementation of a classical cipher technique, the Playfair cipher. The motive is to make the ciphertext produced less vulnerable to attacks; we have tested the same with a common attack, the brute-force attack. The proposed model is also statistically analyzed for vulnerability against the performance of the classical encryption technique.