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Lecture notes in computer science

Best of Both Worlds in Secure Computation, with Low Communication Overhead

Daniel Genkin, Steven Gordon, Samuel Ranellucci

Published Jan 1, 2018• 1 citation
Publisher
DOI
10.1007/978-3-319-93387-0_18

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With the transition of the world to quantum computing, existing cryptographic algorithms are more exposed, and strong post-quantum solutions are required. Lattice-based cryptography, specifically the Kyber512 algorithm, offers quantum-resistant security that can be utilized in low-resource environments, such as Internet of Things (IoT) devices. Existing key exchange techniques for IoT, including RSA and ECC, are susceptible to quantum attacks and tend to be computationally heavy for low-power devices. Such drawbacks render them inefficient in actual-world smart home solutions, where longevity and security efficiency are required. This research presents a new framework, Smart Home Device Communication Security using L-PKEX – a lightweight post-quantum key exchange algorithm based on Kyber512 - that bridges these gaps. L-PKEX is designed to facilitate the economic and secure exchange of keys among smart home gadgets (e.g., smart locks, sensors, controllers) by utilizing Kyber512. The new proposed L-PKEX approach is used to establish secure communication networks among smart home devices, hubs, or user interfaces. Experimental validation and simulations demonstrate that L-PKEX offers minimal computational overhead and reduced energy consumption while maintaining uncompromised security, compared to conventional approaches. Results prove that L-PKEX is an affordable and scalable solution towards providing quantum-resistant, secure smart home IoT communication.
Mobile Ad Hoc Networks (MANETs) enable flexible, infrastructure-less communication for mission critical applications but they are vulnerable impersonation and routing attacks. Quantum computing threatens classical public-key primitives (RSA, ECC) used in MANET security, driving interest in post-quantum cryptography (PQC) for decentralized, resource limited settings. This survey reviews PQC techniques and its application to MANETs, focusing on signature, key exchange, and encryption primitives from lattice based, code base, hash base, and multivariate based families. Synthesizing findings from 40+ studies, we compare security, overheads, and feasibility for constrained nodes and dynamic topologies. Lattice based schemes (Kyber, Dilithium) offer the best balance of security and efficiency, though large keys and CPU costs hinder adoption. Lightweight primitives and hybrid models (PQC with symmetric cryptography) show promise. Key gaps include few lightweight implementations, limited routing level integration (e.g., OLSRv2), and scarce real world validation. Future work should optimize PQC for low power devices, embed it into MANET protocols, and test via simulation and hardware to enable practical, quantum resilient deployments.