Modification of Vernam Cipher

In this age of ever-expanding digital world, Communication plays a very important role which helps in growth of new technology. Naturally security of communication services is also essential. To achieve it we use Encryption. Cryptography plays huge role in Encryption of data, Cryptography comes from two Greek words, “krypos” which means “Hidden or Secret” and “graphein” which means “to write”. In this research, we create extension of vernam cipher using square matrix as key matrix.