A Novel Technique for Enhancement of the Security of Playfair Cipher
Main Article Content
Abstract
In today's world advancement of data transmission over the unsecured channel and data is not secure. In this scenario, data should be in encrypted form and that data transmitted over the network. In cryptography, have two methods to encrypt data are substitution and Transposition. Transposition is referring to changing the position of a character in the given text. On the other hand, Substitution is referring to replacing the character with another character in the given text. Play fair cipher is based on polyalphabetic substitution cipher; classical play fair cipher has a 5*5 matrix. To increase the security of play fair cipher, this paper presents a new approach to introducing double encryption in the sender side and double decryption in the receiver side approach by vigenere cipher, play fair cipher, and linear congruently method.
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