Post-Quantum Secure Blockchain Framework for Edge-Based Mobile Task Offloading in Consumer Electronics and IoTs

The rapid proliferation of mobile and consumer electronic devices, particularly within the Industrial Internet of Things (IIoT), has heightened the demand for low-latency, secure, and cost-efficient computational services. Edge computing emerges as a promising paradigm to meet these requirements by enabling computation at the network edge. However, the process of mobile task offloading to edge nodes introduces significant challenges in terms of data security, integrity, and performance—especially under emerging quantum threats. To address these concerns, this paper proposes a post-quantum cryptography (PQC)-enabled blockchain-based secure edge task offloading framework tailored for consumer electronics and IoT systems. The proposed method leverages a consortium blockchain for decentralized identity authentication and task verification, while integrating PQC mechanisms to ensure long-term cryptographic resilience against quantum adversaries. A genetic algorithm-based decision engine is employed for dynamic and reliable task scheduling, optimizing offloading performance based on latency, cost, and resource dependability. Experimental evaluations show that the proposed system effectively enhances the security and reliability of edge-based task offloading while maintaining low latency, making it suitable for next-generation mobile and IoT applications in the quantum era. According to the statistical results of every uninstallation in scenario 1, BROA outperforms Coopedge in terms of average optimization uninstallation cost at 11.5% and average uninstallation success rate at 16.1%.

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