Redesigning the Serpent Algorithm by PA-Loop and Its Image Encryption Application

This article presents a cryptographic encryption standard whose model is based on Serpent presented by Eli Biham, Ross Anderson, and Lars Knudsen. The modification lies in the design of Cipher, we have used power associative (PA) loop group permutations. proposed mathematical structure superior to Galois Field (GF) terms complexity has ability create arbitrary randomness due larger key space. method simple speedy computations, meanwhile it affirms higher security sensitivity. In contrast GF, PA-loop are non-isomorphic several Cayley table representations. validates resistance cryptanalytic attacks, particularly those targeting structures. scheme’s full description decryption measured rigorously assessed support its multimedia applications. observed speed this technique, which uses 256 bits block size 128 bits, comparable three-key triple-DES.