The evolution of sixth-generation (6G) networks brings unprecedented demands for security, performance, and global interoperability. With the advent of scalable quantum computing, traditional cryptographic schemes such as RSA and ECC are increasingly vulnerable, making Post-Quantum Cryptography (PQC) and Quantum Key Distribution (QKD) essential pillars for securing future communication infrastructures. This paper presents a comprehensive study on the standardization, implementation, and evaluation of PQC and quantum communication protocols within the context of 6G networks. We examine algorithmic candidates endorsed by NIST, such as Kyber and Dilithium, and analyze their performance, entropy guarantees, and deployment feasibility across diverse 6G use cases. A four-stage implementation roadmap is proposed, covering cryptographic testing, hybrid protocol integration, quantum entropy provisioning, and lifecycle cryptographic agility. Our evaluation framework introduces metrics for quantum resilience, protocol interoperability, energy efficiency, and compliance with ETSI, ITU, and IEEE standards. The paper also highlights key technical challenges such as latency overheads, entropy synchronization, and cross-domain cryptographic translation and outlines open research directions for scalable, secure, and sustainable deployment. By aligning cryptographic innovation with international standardization, this work contributes toward building a quantum-resilient, interoperable, and future-proof 6G ecosystem. The key results include handshake latency, which is 95 ms, entropy quality is 96%, interoperability 90 and the compliance score is 92%.
The evolution of sixth-generation (6G) networks brings unprecedented demands for security, performance, and global interoperability. With the advent of scalable quantum computing, traditional cryptographic schemes such as RSA and ECC are increasingly vulnerable, making Post-Quantum Cryptography (PQC) and Quantum Key Distribution (QKD) essential pillars for securing future communication infrastructures. This paper presents a comprehensive study on the standardization, implementation, and evaluation of PQC and quantum communication protocols within the context of 6G networks. We examine algorithmic candidates endorsed by NIST, such as Kyber and Dilithium, and analyze their performance, entropy guarantees, and deployment feasibility across diverse 6G use cases. A four-stage implementation roadmap is proposed, covering cryptographic testing, hybrid protocol integration, quantum entropy provisioning, and lifecycle cryptographic agility. Our evaluation framework introduces metrics for quantum resilience, protocol interoperability, energy efficiency, and compliance with ETSI, ITU, and IEEE standards. The paper also highlights key technical challenges such as latency overheads, entropy synchronization, and cross-domain cryptographic translation and outlines open research directions for scalable, secure, and sustainable deployment. By aligning cryptographic innovation with international standardization, this work contributes toward building a quantum-resilient, interoperable, and future-proof 6G ecosystem. The key results include handshake latency, which is 95 ms, entropy quality is 96%, interoperability 90 and the compliance score is 92%.
The advent of quantum computing has precipitated an estimated attack resistant cryptography system necessitating quantum attacks. The classical asymmetric algorithms, i.e., RSA and ECC are susceptible to Shor algorithm and a transition should be made to Post-Quantum Cryptography (PQC) anymore. The novelty of this work lies in providing a unified comparative framework that analyzes PQC families through security assumptions, concrete key/ciphertext sizes, and implementation complexity an aspect not addressed collectively in prior surveys. This survey gives a general picture of the status of the design process and general evaluation of PQC accounting its application within the paradigm of the diversified networks including the IoT and 5G/6G and in the cyber-physical environment. Furthermore, this review uniquely synthesizes practical hybrid‑deployment strategies, including protocol layering, coexistence models, and backward‑compatibility mechanisms, offering actionable guidance for real‑world migration. Additionally, the manuscript contributes a prioritized list of open problems across IoT, 5G/6G, blockchain, and cyber‑physical systems, highlighting domains facing the most urgent quantum‑resilience challenges. In this paper, the authors will evaluate the most popular PQC schemes, including schemes based on lattice, code, hash, and isogeny, depending on their performance, scalability, and interoperability (with reference to the recent research). It also examines the problems of integration as implemented with respect to the computational overhead, latency and adoption of hybrid with classical cryptography. This is expounded more to the standardization of PQC by NISTs and with a focus on such algorithms as CRYSTALS-Kyber and Dilithium. The findings suggest that, hybrid PQC protocols are able to control quantum resistance and actual performance in numerous infrastructures in computing systems.
The evolution of 6G networks necessitates robust authentication and key agreement (AKA) protocols to counter emerging security challenges, particularly the threat posed by quantum computing. Existing 5G-AKA protocols remain vulnerable to user tracking, replay attacks, and false base station impersonation, while Elliptic Curve Cryptography (ECC) and RSA-based key exchanges face imminent obsolescence due to quantum attacks. This study examines the vulnerabilities of 5G-AKA and explores hybrid post-quantum cryptography (PQC) as a transitional security solution for 6G networks. We evaluate NIST-standardized PQC algorithms, focusing on their computational overhead, key size efficiency, and adaptability to heterogeneous network environments, including IoT and ultra-low latency applications. A comparative analysis of hybrid cryptographic schemes demonstrates that lattice-based (Kyber, Dilithium), hash-based (SPHINCS+), and code-based (BIKE, Classic McEliece) PQC techniques provide varying trade-offs between security, efficiency, and deployment feasibility. Furthermore, we propose a quantum-resistant 6G-AKA framework, integrating hybrid PQC, AI-driven trust mechanisms, and decentralized authentication to ensure scalability and interoperability. Experimental benchmarks highlight potential performance constraints, including latency in PQC-based key exchange and resource limitations in edge computing. Addressing these challenges requires the optimization of lightweight PQC implementations, formal security validation, and global standardization efforts. Our findings provide a roadmap for the secure transition to 6G authentication protocols, ensuring resilience against both classical and quantum threats.
Quantum computing poses significant challenges to the current cryptographic landscape, particularly with the upcoming deployment of 6G networks. Traditional cryptographic algorithms, such as Rivest-Shamir-Adleman (RSA) and Elliptic Curve Cryptography (ECC), are vulnerable to quantum-based attacks. This vulnerability has led to the development of Post-Quantum Cryptography (PQC), Quantum Key Distribution (QKD), and Satellite-based QKD solutions. This paper provides a comprehensive review of these quantum-safe technologies, discussing their integration within the context of 6G networks. Key performance indicators (KPIs), scalability issues, and hybrid cryptographic solutions are analyzed, along with the potential of Satellite-based QKD in securing global communications. The paper also explores use cases in healthcare, financial services, defense, and autonomous systems, evaluating future research directions and issues in scaling these quantum-safe technologies across industries.
The evolution of 6G communication systems brings about unprecedented demands on ultra-reliable, lowlatency, wide-scale and end-to-end secure transmissions. At the same time, the emergence of quantum computing presents major risks for traditional cryptographic schemes, which will become unsecure for future communication infrastructures. This arti-cle introduces the first mathematically inspired architectural framework incorporating Post-Quantum Cryptographic (PQC) protocols into the 6 G design to facilitate secure and efficient communication in quantum-inimical scenarios. The framework successfully integrates them so that lattice-based cryptography and code-based signatures or multivariate polynomials with low complexity could work with one another to implement real-time confidential communication concurrently with the authentication and key exchange, while meeting the requirements of latency and bandwidth. We propose a three-layer architecture, crypto-graphic-agile and mathematically optimized, that operates at: physical, MAC and network layers and focuses on the energy efficiency, computational offloading and dynamic proto-col adaptation. In addition, the paper proposes a suite of new benchmarking metrics for QKD systems based on security, latency, and scalability, and conducts forward-looking numerical calculations under both classical and entirely quantum-safe and hybrid classical-quantum threat models. The results in this study have confirmed that the mathematically-based cryptographic modes can serve as 6 G architecture part, that can guarantee quantum resilient secure networking. The paper also points out open issues and research directions toward the efficient integration of PQC into upcoming wireless standards. Finally, this work provides the foundation framework for secure, ultra-reliable, and low-latency communication to be realized in the post-quantum 6G era.
Quantum computing presents significant issues to the current cryptographic landscape, especially with the upcoming deployment of 6G networks. Traditional cryptographic algorithms, such as Rivest-Shamir-Adleman (RSA) and Elliptic Curve Cryptography (ECC), are vulnerable to quantum-based attacks, leading to the need for Post-Quantum Cryptography (PQC), Quantum Key Distribution (QKD), and Satellite-based QKD solutions. This paper offers a comprehensive review of these quantum-safe technologies, discussing their integration within the context of 6G networks. Key performance indicators (KPIs), scalability issues, and hybrid cryptographic solutions are analyzed, along with the potential of Satellite-based QKD in securing global communications. The paper also explores use cases in healthcare, financial services, defense, and autonomous systems, evaluating future research directions and issues in scaling these quantum-safe technologies across industries.
6G networks will require quantum-secure cryptography deployed across core infrastructure, edge nodes, resource-constrained IoT devices. Although post-quantum cryptographic (PQC) algorithms have been standardized by NIST, their practical deployability in bandwidth and latency limited wireless systems remains unclear. This paper presents a practical evaluation of NIST selected PQC schemes, including ML-KEM (Kyber), ML-DSA (Dilithium), and Falcon. Benchmarks conducted with OpenSSL and the OQS provider on heterogeneous platforms show that while computational performance is acceptable, ciphertext and signature size expansion significantly impact handshake reliability and bandwidth efficiency, particularly at the network edge. The results highlight key system-level trade-offs and motivate the need for PQC optimization and deployment-aware design for future quantum-secure 6G networks.