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International Conference on Innovations in Computer Science & Software Engineering (ICONICS)

Design and Analysis of Quantum Safe Virtual Private Network

Muhammad Saad, Waseem Ahmed, Muhammad Mubashir Khan

Published Nov 13, 2024• 5 citations
Publisher

Abstract

The start of quantum computing poses a significant security threat to the existing Virtual Private Networks that reinforce secure communication on the internet. Quantum computers have the potential to break widely used encryption algorithms, such as RSA and ECC, by efficiently solving complex mathematical problems. Therefore, there is an urgent need to develop and analyze quantum-safe alternatives for Virtual Private Networks. This thesis embarks on a journey of quantum-safe algorithms and how we used to design and implement them to make a quantum-safe VPN environment, aiming to path towards a secure digital future. In this thesis, we have designed a quantum-safe VPN and then analyzed how it works compared to traditional VPNs. We used NIST's algorithms: Dilithium3 for digital signatures.

DOI
10.1109/iconics64289.2024.10824365

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The start of quantum computing poses a significant security threat to the existing Virtual Private Networks that reinforce secure communication on the internet. Quantum computers have the potential to break widely used encryption algorithms, such as RSA and ECC, by efficiently solving complex mathematical problems. Therefore, there is an urgent need to develop and analyze quantum-safe alternatives for Virtual Private Networks. This thesis embarks on a journey of quantum-safe algorithms and how we used to design and implement them to make a quantum-safe VPN environment, aiming to path towards a secure digital future. In this thesis, we have designed a quantum-safe VPN and then analyzed how it works compared to traditional VPNs. We used NIST's algorithms: Dilithium3 for digital signatures.
The fast development of quantum computing presents a great threat to the security of classical cryptographic algorithms that support secure communication systems like Virtual Private Networks (VPNs). RSA and ECC algorithms that are commonly employed in key exchange and digital authentication can fall victim to quantum attacks from Shor’s and Grover’s algorithms. This study introduces the design and deployment of a post-quantum-resistant VPN protocol using post-quantum cryptographic (PQC) primitives, i.e., Kyber for key encapsulation and Dilithium for digital signatures. The suggested structure is incorporated into OpenVPN via the Open Quantum Safe (OQS) framework for uninterrupted post-quantum compatibility. The protocol is also capable of supporting hybrid cryptography for smooth transition from classical to post-quantum systems. Performance benchmarks are performed over metrics like handshake latency, tunnel throughput, CPU usage, and certificate overhead. The findings illustrate that post-quantum secure VPNs are not only achievable but also feasible for near-future deployment. This work adds a future-proof framework to improve the resilience of secure communications in the post-quantum era with a focus on scalability, crypto-agility, and real-world implementation readiness.
The significance of virtual private networks (VPN) has increased rapidly over time. Enterprises utilize IPsec and other VPN technologies to provide a secure connection to mission-critical resources over the internet. The various sub-protocols of IPsec i.e., Encapsulation Security Payload (ESP) and Authentication Header (AH) provide confidentiality and integrity through the encryption mechanisms. Unfortunately, recent studies indicate that the traditional encryption techniques employed in IPsec could face a potential threat from the progress of quantum computing. To address this issue, this research proposes an improved Encapsulation Security Payload for Quantum Safety (ESPQ) which can serve as a post-quantum encryption and authentication algorithm for VPN networks. The proposed algorithm incorporates modern quantum-safe algorithms into its framework. Through extensive research and analysis of performance metrics, it has become evident that ESPQ surpasses the conventional methodology of ESP both in terms of heightened security safeguards and reduced system load requirements.
This paper introduces qTrustNet VPN, a next-generation Virtual Private Network (VPN) designed to enhance security in the quantum era. With the rapid advancement of quantum computing, traditional encryption methods face obsolescence, necessitating more robust security solutions. qTrustNet VPN addresses this need by integrating the WireGuard protocol, known for its simplicity and high performance, with Post-Quantum Cryptography (PQC) algorithms developed by the National Institute of Standards and Technology (NIST). These PQC algorithms are designed to withstand the decryption capabilities of quantum computers, providing long-term security.
The rise of quantum computing poses significant risks to classical cryptographic algorithms, especially those used in digital signatures within Virtual Private Networks (VPNs). This paper proposes a hybrid cryptographic framework for IPsec VPNs that combines traditional digital signatures with post-quantum cryptographic (PQC) techniques to enhance security against both conventional and quantum threats. Our method introduces a dual-signature scheme integrated into the IKEv2 protocol, verified using formal methods via the Tamarin Prover to ensure robustness. We further evaluate performance using a modified StrongSwan implementation under realistic network conditions. Results show that while hybrid signatures introduce modest overhead, they provide a viable and forward-compatible solution for securing VPNs in the post-quantum era.
This paper introduces qTrustNet VPN, a next-generation Virtual Private Network (VPN) designed to enhance security in the quantum era. As traditional encryption methods face obsolescence due to the advent of quantum computing, there is an urgent need for more robust security solutions. qTrustNet VPN addresses this need by ensuring the confidentiality and integrity of data transmission through the WireGuard protocol, known for its simplicity and high performance. At the core of qTrustNet VPN’s enhanced security is the integration of a Post-Quantum Cryptography (PQC) algorithm, developed by the National Institute of Standards and Technology (NIST). This PQC algorithm is designed to withstand the decryption capabilities of quantum computers, thus providing long-term security. To further bolster security, the encryption key of the PQC algorithm is protected using Physically Unclonable Function (PUF) technology. PUFs offer a hardware-based security mechanism that is resistant to cloning and tampering, ensuring that the encryption keys remain secure against both classical and quantum attacks. This innovative combination of WireGuard protocol, PQC algorithms, and PUF technology creates a VPN system with significantly improved security features. To validate its effectiveness, the performance of the proposed qTrustNet VPN was rigorously evaluated in a 10GbE NIC network environment. The results demonstrated a remarkable throughput of up to 8.5 Gbps, ensuring high-speed data transmission capabilities. Additionally, the latency was measured at 1ms or less, highlighting the system’s efficiency in maintaining low-latency communication. In summary, qTrustNet VPN represents a significant advancement in VPN technology, offering robust security features tailored for the quantum era while maintaining high performance and low latency. This paper details the design, implementation, and performance evaluation of qTrustNet VPN, showcasing its potential to secure data transmission against emerging quantum threats.
The emergence of quantum computing significantly threatens these conventional VPN security mechanisms, such as AES-256 and RSA, since they are vulnerable to quantum algorithms like Shor's. In this regard, a quantum-secure VPN framework using PQC was developed based on the FIPS-203 standards. The provided solution employs lattice-based schemes for secure key exchange and robust encryption with CRYSTALS-Kyber. It offers very strong protection against quantum-level threats while considering real-world performance. Tests performed can receive up to 7.8 Gbps with latency under 2 ms, bringing better scalability compared to conventional systems. It is cross-platform and has a real-time monitoring capability that will go well for both academic and enterprise situations by providing a resilient and scalable approach in VPN security in the quantum era.