Design of AL-13 Block Cipher Algorithm Based On Extended Feistel Network

Abstract

In this paper, we design a new block cipher algorithm called AL-13. The structure of AL-13 is simple. We use Extended Feistel Network Type II with input-output 128 bits and key input 256 bits. We also use Dragon’s key schedule, binary addition, modulus addition, and XOR to give diffusion, and two functions F and N for confusion. We conducted Strict Avalanche Criterion (SAC) tests to determine whether AL-13 satisfy cryptographic measurement parameters.