Mixing Substitution and Transposition Method for Enhancing Security

Cryptography is a way of converting the plaintext into the ciphertext. There are mainly two methods for that one is substitution technique and the other is transposition technique. Caesar cipher is the kind of substitution technique and it can be easily attacked so here we are combining it with the transposition technique to enhance the security. Here we will apply columnar transposition method on the Caesar cipher to enhance the security for a better and secure cipher.