A New Lightweight AES Using a Combination of Chaotic Systems
Meryam Saad Fadhil, Alaa Kadhim Farhan, Mohammad Natiq Fadhil, Nadia M. G. Al-Saidi · 2020
In current times, the Internet of Things (IoT) applications have been widely used in various life fields, such as smart homes, health care, and other applications designed to help people. The data passing through IoT devices need to be protected against any unauthorized access. So, lightweight encryption algorithms are of high demand. In this paper, a new Lightweight Advanced Encryption Standard (LAES) based on a combination of chaotic systems is introduced to protect sensing data. It was designed to have the ability to reduce encryption/decryption time. A combination of logistic maps with different dimensions is adapted to construct the main processes in AES, such as S-Box, initial permutation (IP), shifting values, and encryption keys. The Shift rows stage replaced by IP while the MixColumns replaced by dynamic ShiftRows. One of the essential operations in AES is the S-Box; a new S-Box is generated from a ID chaotic logistic map system to enhance the security level. The analysis results show that the new LAES can encrypt text file of size 5MB in only 1.987 sec. It also passes SBox tests and NIST. The result of each of NIST tests was near to one. So, LAES can be used for IoT security.