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International Conference on Consumer Electronics

Lightweight MQTT Aware Post Quantum Secure Communication Framework for IoT and Consumer Electronics

Tariq Qayyum, Asadullah Tariq, Zouheir Trabelsi, Mohamed Adel Serhani, Muhammad Waqas Haseeb

Published Feb 3, 2026• 0 citations
Publisher
DOI
10.1109/icce67443.2026.11449717

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Abstract The Post-Quantum Lightweight Key Sharing Protocol for Secure MQTT-Based IoT Networks (PQLKS-MQTT) addresses the critical need for quantum-resistant and resource-efficient security in IoT communications. As the proliferation of IoT devices continues, securing MQTT-based networks against evolving threats, including quantum attacks, becomes imperative. PQLKS-MQTT integrates the Kyber Key Encapsulation Mechanism for post-quantum key exchanges, along with BLAKE2s hashing and ChaCha20 encryption, to ensure robust security with minimal resource consumption. Implemented using the Cooja simulator with Contiki OS, Eclipse Mosquitto MQTT broker, and Open Quantum Safe (liboqs) library, the protocol demonstrates superior performance compared to state-of-the-art solutions. Experimental results show that PQLKS-MQTT achieves the lowest CPU energy consumption (0.0000021 mJ), fastest execution time (0.35 seconds), and minimal computational (260 CPU cycles) and communication overheads (55 bytes), with only a slight increase in average energy consumption (0.00145 mJ) due to post-quantum cryptographic operations. This balance between enhanced security and efficient resource utilization makes PQLKS-MQTT a suitable solution for resource-constrained IoT devices and large-scale deployments, offering a scalable, quantum-safe communication framework for future IoT ecosystems.
The rapid expansion of the Internet of Things (IoT) has introduced millions of resource-constrained devices into critical infrastructures, consumer environments, and industrial systems. These devices rely on lightweight communication protocols such as MQTT to support low-power, intermittent, and bandwidth-limited operation. However, common TLS algorithms used to secure MQTT communications are vulnerable to quantum attacks made feasible by Shor's algorithm. As a result, IoT infrastructures must evaluate and adopt post-quantum cryptographic (PQC) methods capable of providing long-term resilience. This report investigates the implementation of PQC algorithms within an MQTT-based IoT networks using three Raspberry Pis. Specifically, it integrates the FALCON digital signature scheme, one of NIST's selected post-quantum signature algorithms, to maintain message authenticity and integrity across resource-constrained MQTT clients and brokers. By measuring system performance, the research characterizes the practical trade-offs of deploying lattice-based PQC on lightweight hardware.