A Lightweight Packet Cipher Algorithm based on unbalanced Feistel Structure

摘要

Aiming at the problem of high energy consumption and low efficiency in the existing lightweight packet cipher algorithms, the paper presents a new lightweight packet cipher algorithm: LPEA-I. It is based on the unbalanced Feistel structure to design a simple and high efficiency frame, and uses a few improvement measures, such as the pseudo-random transformation, the new S-box function, the new round-function and so on, to improve its performance in the resource-constrained devices. The simulation results show that the LPEA-I algorithm has the advantages of high computational efficiency and low resource occupancy, and it is suitable for wireless sensor network devices with limited resource and low performance hardware.