arXiv subjects

Arsalan Vahi

Publications and source records attributed to Arsalan Vahi.

3 recordsLinked to original sources

arXiv2025

Key Length-Oriented Classification of Lightweight Cryptographic Algorithms for IoT Security

The successful deployment of the Internet of Things (IoT) applications relies heavily on their robust security, and lightweight cryptography is considered an emerging solution in this context. While existing surveys have been examining lightweight cryptographic techniques from the perspective of hardware and software implementations or performance evaluation, there is a significant gap in addressing different security aspects specific to the IoT environment. This study aims to bridge this gap. This research presents a thorough survey focused on the security evaluation of symmetric lightweight ciphers commonly used in IoT systems. The objective of this study is to provide a holistic understanding of lightweight ciphers, emphasizing their security strength, which is an essential consideration for real-time and resource-constrained applications. Furthermore, we propose two taxonomies: one for classifying IoT applications based on their inherent characteristics, and another for evaluating security levels based on key size. Our findings indicate that key size is a critical parameter in the security of lightweight ciphers. Ciphers employing keys shorter than 128 bits are considered less secure or even insecure for protecting sensitive data

cs.CR↗

arXiv2025

Lightweight Hybrid Block-Stream Cryptographic Algorithm for the Internet of Things

In this thesis, a novel lightweight hybrid encryption algorithm named SEPAR is proposed, featuring a 16-bit block length and a 128-bit initialization vector. The algorithm is designed specifically for application in Internet of Things (IoT) technology devices. The design concept of this algorithm is based on the integration of a pseudo-random permutation function and a pseudo-random generator function. This intelligent combination not only enhances the algorithm's resistance against cryptographic attacks but also improves its processing speed. The security analyses conducted on the algorithm, along with the results of NIST statistical tests, confirm its robustness against most common and advanced cryptographic attacks, including linear and differential attacks. The proposed algorithm has been implemented on various software platform architectures. The software implementation was carried out on three platforms: 8-bit, 16-bit, and 32-bit architectures. A comparative analysis with the BORON algorithm on a 32-bit ARM processor indicates a performance improvement of 42.25%. Furthermore, implementation results on 8-bit and 16-bit microcontrollers demonstrate performance improvements of 87.91% and 98.01% respectively, compared to the PRESENT cipher.

cs.CR↗

arXiv2021

On the Differential Cryptanalysis of SEPAR Cipher

SEPAR is a lightweight cryptographic algorithm, designed to implement on resource-constrained devices especially those employed in IoT environments. Meanwhile, the mixed structure design of cipher leads to speed improvement while guaranteeing its resistance against common cryptographic attacks, especially differential and linear attacks. In order to confirm the resistance of the cipher against differential attack, an extensive investigation was presented in our previous work. In his study, we conduct new research continuing the previously presented research. We prove that there are enough active S-boxes so as to resist cipher against differential cryptanalysis. Moreover, this can provide a tight bound of resisting cipher against this attack.

cs.CR↗