Survey: Recent Modifications in Vigenere Cipher

Abstract

In order to secure the information there are different polyalphabetic substitution ciphers are available. Out of these Vigenere cipher is considered to be most efficient and simplest one. Due to its repeating nature of the key it is also vulnerable to attacks. To overcome this, there are many researches going on to modify the conventional Vigenere Cipher. In this paper we have presented a review of recent modifications in Vigenere cipher and its cryptanalysis.