Nonlinearity Improvement for Ascon Substitution Box | ||
| International Journal of Telecommunications | ||
| Volume 04, Issue 01, February 2024, Pages 1-13 PDF (1.82 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ijt.2024.269831.1043 | ||
| Authors | ||
| Mohamed Abd Elhafez Bakr* 1; Noha Othman Korany2 | ||
| 1Air Defense College, Faculty of Engineering, Alexandria University, Egypt | ||
| 2Electrical Engineering Department, Faculty of Engineering, Alexandria University, Egypt | ||
| Abstract | ||
| The technological scene is developing towards employing tiny-sized devices. For a variety of functions that encompass sensing, identification, and decision-making. These devices are re-stricted in their resources to be secure. The National Institute of Standards and Technology (NIST) has published the Ascon, a standard lightweight cryptography (LWC) algorithm for data gath-ered by restricted devices in 2023. The fundamental function of Ascon is the permutation function. The main core of the permutation function is the substitution box (S-box). This paper proposes an S-box based on chaotic systems using coupled map lattices (CML), which agrees with LWC al-gorithms due to its low complexity. The proposed S-box suggests high performance and security for restricted devices. The security robustness is tested using various cryptographic criteria, such as nonlinearity, strict avalanche criteria, and differential approximation probabilities. The pro-posed S-box approaches significant resistance to both linear and differential cryptanalysis. So, it could be replacing the substitution and linear diffusion layers of Ascon permutation to improve the nonlinearity and randomness. | ||
| Keywords | ||
| Ascon; IoT; Lightweight Cryptography; Nonlinearity; Information Security | ||
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