Security Effect on AES in Terms of Avalanche Effect by Using Alternate S-Box

Abstract

For data security on the internet is now a significant issue since vast change of delicate information. For this purpose, understanding avalanche effect, which increases the security level of communication, is important. The powerful and highly demanded used secure algorithm is AES, it is a robust private key based cryptographic algorithm. In this paper different ways of encryption technique has been suggested, which is slightly robust against attack in terms of avalanche effect by modifying AES, which uses two different S-boxes alternatively because security of a cipher is centralized on the usage of s-box. Proposed approach has been tested with the basic AES in terms of different security measures like avalanche effect, randomness, bit independence criteria (BIC). Achieved result help us to conclude that the proposed method is more robust against attack.