Implementation of Modified Playfair CBC Algorithm

Abstract

These days, Information Security is the most summon aspects in the web and network application due to their swiftly origination. Therefore, secure exchanged data over the internet is vital. In this context, cryptography is used that converts information from its normal form into an unreadable form by using encryption techniques. This paper deals with a new solution approach to overcome the shortcomings of the Playfair algorithm. In this paper, the presented PlayfairCBC encryption mechanism makes the cryptanalysis complex. The encrypted text obtained is almost unreadable. The proposed PlayfairCBC algorithm is implemented and number of tests is performed to prove its efficiency. Finally, it has been analyzed on the basis of avalanche effect.