A New Approach to Enhance Avalanche Effect in Aes to Improve Computer Security

Ajeet Singh

Abstract

Cryptography is the technique or process by which information or message is sent by a person or users to other person or users so that only the authorized person or users can receive the message. In this research, an Enhanced Advanced Encryption Standard (E-AES) algorithm is proposed for transfer of data to achieve various security goals. This new algorithm is based on the symmetric key encryption Advanced Encryption Standard (AES). E-AES analyzes Advanced Encryption Standard (AES) in terms of security which is calculated by avalanche effect and subsequent memory requirement. It adds one more step by including logical XOR in the existing AES algorithm which ensures improvement in the encryption in terms of avalanche effect. Plaintext and encryption key are mapped in binary code before encryption process. Avalanche Effect is calculated by changing one bit in plaintext keeping the key constant. The implementation of both techniques has been realized for experimental purposes. Experimental results reflect that E-AES exhibits significant high Avalanche Effect after comparative study with existing encryption algorithm.