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Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)

A Post-Quantum Cryptographic Framework for High-Level Security Protocols in 6G

Pasindu Udugahapattuwa, Chamitha de Alwis, Engin Zeydan, Uditha Wijewardhana, Madhusanka Liyanage

Published Jun 1, 2026• 1 citation
Publisher
DOI
10.1109/eucnc/6gsummit68295.2026.11577443

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The development of sixth-generation (6G) networks, focused on ultra-dense access scenarios, ultra-low latency, and massive connectivity of heterogeneous devices, significantly increases the requirements for authentication mechanisms and cybersecurity. An additional risk factor is the projected progress in quantum computing, which challenges the long-term security of classical cryptographic algorithms and necessitates the integration of post-quantum digital signatures into telecommunication protocols. At the same time, existing approaches to implementing post-quantum cryptography in mobile networks are primarily based on static schemes and do not account for the dynamic operating conditions of 6G ultra-dense networks. This paper investigates the problem of constructing quantum-resistant and high-performance authentication protocols for 6G networks, considering fluctuating network parameters, device heterogeneity, and constraints on computational and energy resources. It is demonstrated that the static application of post-quantum digital signatures fails to provide the necessary balance between security levels and the efficiency of authentication procedures in ultra-dense access scenarios. To overcome these limitations, a generalized methodology for the dynamic optimization of post-quantum digital signatures in 6G authentication protocols is proposed. This methodology is based on the adaptive selection of cryptographic algorithms and their parameters depending on the current network state and the resource characteristics of authenticated nodes. The developed model formalizes a mechanism for dynamic signature selection, accounting for latency, computational costs, energy consumption, and quantum resistance levels, which allows for the formulation of formal optimality criteria for 6G networks. The integration of the proposed methods into the authentication protocol forms an adaptive cryptographic architecture capable of scaling under high connection density without compromising security. Experimental simulation results for ultra-dense access scenarios confirm that dynamic optimization reduces authentication latency and energy consumption compared to static post-quantum variants, justifying the feasibility of using adaptive protocols in 6G networks.
The development of sixth-generation (6G) networks, focused on ultra-dense access scenarios, ultra-low latency, and massive connectivity of heterogeneous devices, significantly increases the requirements for authentication mechanisms and cybersecurity. An additional risk factor is the projected progress in quantum computing, which challenges the long-term security of classical cryptographic algorithms and necessitates the integration of post-quantum digital signatures into telecommunication protocols. At the same time, existing approaches to implementing post-quantum cryptography in mobile networks are primarily based on static schemes and do not account for the dynamic operating conditions of 6G ultra-dense networks. This paper investigates the problem of constructing quantum-resistant and high-performance authentication protocols for 6G networks, considering fluctuating network parameters, device heterogeneity, and constraints on computational and energy resources. It is demonstrated that the static application of post-quantum digital signatures fails to provide the necessary balance between security levels and the efficiency of authentication procedures in ultra-dense access scenarios. To overcome these limitations, a generalized methodology for the dynamic optimization of post-quantum digital signatures in 6G authentication protocols is proposed. This methodology is based on the adaptive selection of cryptographic algorithms and their parameters depending on the current network state and the resource characteristics of authenticated nodes. The developed model formalizes a mechanism for dynamic signature selection, accounting for latency, computational costs, energy consumption, and quantum resistance levels, which allows for the formulation of formal optimality criteria for 6G networks. The integration of the proposed methods into the authentication protocol forms an adaptive cryptographic architecture capable of scaling under high connection density without compromising security. Experimental simulation results for ultra-dense access scenarios confirm that dynamic optimization reduces authentication latency and energy consumption compared to static post-quantum variants, justifying the feasibility of using adaptive protocols in 6G networks.
In 6G-IoT music ecosystems, the development of quantum computers presents new dangers to privacy and security, as conventional cryptographic defenses cannot protect sensitive musical information. This paper proposes MUSI-PQC, a new post-quantum cryptographic protocol designed for reliability and trust in 6G-IoT music systems. MUSI-PQC, which is built upon the binary ring-learning with errors problem, optimizes the processing of musical data streams through polynomial superscalar acceleration and fast random number generation to ensure secure music transmission in 6G networks. The protocol achieves superior resource utilization across distributed edge nodes while maintaining high-security standards and trustworthiness metrics, demonstrating a 45% reduction in encryption time compared to existing approaches at the 140-bit quantum security level. Trust and security measurable trade-offs are shown with experimental results on emulated 8-bit 6G-IoT music systems where MUSI-PQC audio processing latency is kept lower than 0.8ms for 192kHz sampling rates, symbol recovery accuracy in constellation analysis is achieved at 99.7%, and private key demand is limited to 127 bytes revealing critical enhancements needed for dependable functionality in 6G-IoT music systems. The security assessment affirms MUSI-PQC’s reliability in protecting musical content during the quantum computing phase of 6G-IoT networks by confirming the protocol’s resilience against lattice attacks and other side-channel vulnerabilities, including timing, power, and fault injection attacks.