A New Approach on Advanced Encryption Standards to Improve the Secrecy and Speed Using Nonlinear Output Feedback Mode

Abstract

The proposed cipher system is fast and secure stream cipher for software-based applications. The new cipher system is designed using output feedback mode on Advanced Encryption Standard with an extra XOR operation. It contains initial vectors (IV1 and IV2), and these IVs are updated by nonlinear functions. The increased security of the proposed cipher is due to the nonlinear functions. Along with the security, the speed of execution increased by executing Advanced Encryption Standard in only eight rounds. Various security evaluation parameters considered in the security analysis of the proposed cipher system. In addition to it, the speed of execution of the new approach analyzed with other systems with respect to the time complexity.