Enhancing Data Security in Fog Computing Using AES Cryptography Technique Based on Argon2 key

Fog computing has become a decentralized network infrastructure operating at the network edge during the era of the Internet of Things (IoT), and it has a major impact on the reduction of latency times in time-sensitive applications by a significant margin compared to the cloud services offered. Nevertheless, the process of information transfer in the Fog-to-Cloud continuum creates significant security risks. Traditional encryption methods often rely on weak key derivation functions, making them susceptible to advanced brute-force attacks. In a bid to conquer these challenges, the current paper will suggest a multi-layered security architecture that incorporates the use of Argon2id, AES-256, and the Information Dispersal Algorithm (IDA). The proposed model incorporates the use of Argon2id, which is used to derive memory-hard key, AES-256, which is used to encrypt, and the Information Dispersal Algorithm (IDA) which is used to fragment. Experimental data show that the system has a steady key derivation latency of 450 ms, which is sufficient to counterattack the attacks of the GPUs, and the overall processing time of 500 MB payloads does not exceed 3.3 seconds. This goes to show that the proposed model has a solid trade-off between high-grade security and operational efficiency which is appropriate to contemporary distributed settings.