Analysis and Evaluation of Modern Lightweight Cryptographic Algorithms: Standards, Hardware Implementation, and Security Considerations

The proliferation of resource-constrained devices in the Internet of Things (IoT) has intensified the need for cryptographic algo-rithms that are both secure and efficient.Traditional cryptographic schemes such as AES and RSA, while robust, are often unsuit-able for embedded and lowpower devices due to computational and memory demands.This paper presents a comprehensive re-view of lightweight cryptography (LWC), focusing on algorith-mic taxonomy, comparative hardware performance, standardiza-tion initiatives by NIST, and evolving attack countermeasures.A detailed comparative analysis of six algorithms is provided using performance metrics such as gate equivalents, throughput, energy efficiency, and side-channel attack resistance.Additional empha-sis is given to emerging paradigms such as memristive cryptogra-phy and postquantum lightweight solutions.Visual aids including comparative tables, radar charts, and performance graphs illustrate trade-offs across algorithms.The study also identifies gaps in cur-rent research and outlines future directions, including AI-assisted cryptanalysis, bio-inspired architectures, and green cryptography.