An Enhanced Symmetric-key block cipher algorithm to manage network security

ABSTRACT This paper describes the cryptography and enhancement in AES cipher. An iteration of the byte sub , mix column ,shift row , add round key steps is called a round. The dependency of the amount of rounds of the algorithm is on the key size. There is a use of Sbox creation to perform the task we discussed the enhancement in advanced encryption standard with the various parameters in this paper. In this , a polynomial multiplication (poly-mult) function is used and we compared the various parameters like periodicity,entropy , histogram, autocorrelation, N-gram.