Younes Lahraoui¹, Jihane Jebrane², Youssef Amal¹, Saiida Lazaar¹, Cheng-Chi Lee^3,4,*

CMES-Computer Modeling in Engineering & Sciences, Vol.144, No.1, pp. 615-641, 2025, DOI:10.32604/cmes.2025.067778 - 31 July 2025

Abstract Due to their resource constraints, Internet of Things (IoT) devices require authentication mechanisms that are both secure and efficient. Elliptic curve cryptography (ECC) meets these needs by providing strong security with shorter key lengths, which significantly reduces the computational overhead required for authentication algorithms. This paper introduces a novel ECC-based IoT authentication system utilizing our previously proposed efficient mapping and reverse mapping operations on elliptic curves over prime fields. By reducing reliance on costly point multiplication, the proposed algorithm significantly improves execution time, storage requirements, and communication cost across varying security levels. The proposed authentication… More >

Vincent Omollo Nyangaresi^1,2, Arkan A. Ghaib³, Hend Muslim Jasim⁴, Zaid Ameen Abduljabbar^4,5,6,*, Junchao Ma^5,*, Mustafa A. Al Sibahee^7,8, Abdulla J. Y. Aldarwish⁴, Ali Hasan Ali^9,10, Husam A. Neamah¹¹

CMC-Computers, Materials & Continua, Vol.81, No.1, pp. 1029-1057, 2024, DOI:10.32604/cmc.2024.053854 - 15 October 2024

Abstract Vehicular ad hoc networks (VANETs) provide intelligent navigation and efficient route management, resulting in time savings and cost reductions in the transportation sector. However, the exchange of beacons and messages over public channels among vehicles and roadside units renders these networks vulnerable to numerous attacks and privacy violations. To address these challenges, several privacy and security preservation protocols based on blockchain and public key cryptography have been proposed recently. However, most of these schemes are limited by a long execution time and massive communication costs, which make them inefficient for on-board units (OBUs). Additionally, some… More >

Mouna Bedoui^1,*, Belgacem Bouallegue^1,2, Abdelmoty M. Ahmed², Belgacem Hamdi^1,3, Mohsen Machhout¹, Mahmoud¹, M. Khattab²

Computer Systems Science and Engineering, Vol.44, No.3, pp. 2177-2193, 2023, DOI:10.32604/csse.2023.026516 - 01 August 2022

Abstract Since the end of the 1990s, cryptosystems implemented on smart cards have had to deal with two main categories of attacks: side-channel attacks and fault injection attacks. Countermeasures have been developed and validated against these two types of attacks, taking into account a well-defined attacker model. This work focuses on small vulnerabilities and countermeasures related to the Elliptic Curve Digital Signature Algorithm (ECDSA) algorithm. The work done in this paper focuses on protecting the ECDSA algorithm against fault-injection attacks. More precisely, we are interested in the countermeasures of scalar multiplication in the body of the… More >