Qureca and Paraxiom secure quantum keys with post-quantum gateway

Even before powerful quantum computers arrive, vulnerabilities are emerging in quantum networks. QURECA and Paraxiom Technologies are collaborating to address a present-day threat to Quantum Key Distribution (QKD) systems: the insecure classical channels used to deliver encryption keys, susceptible to “harvest now, decrypt later” attacks.

QURECA will be a European market entry point for Paraxiom’s Post-Quantum Transport Gateway, aiming for a pilot deployment and using its over 40 CPD-certified courses to assess quantum-safe exposure. “Organisations across Europe are asking how to secure every link in their quantum-safe networks,” says Dr. Araceli Venegas-Gomez, CEO and Founder of QURECA, “Working with Paraxiom, we can introduce them to a practical, standards-based solution.”

Post-Quantum Transport Gateway Secures QKD Key Delivery

Paraxiom Technologies’ Post-Quantum Transport Gateway (PQTG) has undergone interoperability testing against two commercial key delivery systems using the ETSI GS QKD 014 interface, demonstrating compatibility with existing quantum infrastructure. This testing confirms the gateway’s ability to function within established quantum key distribution networks without requiring hardware modifications, which is important for rapid deployment. The PQTG addresses a specific vulnerability in QKD systems: the classical channels used to deliver keys generated by quantum means, which remain susceptible to attacks from both current and future computing capabilities.

The potential for “harvest now, decrypt later” attacks represents an immediate threat to QKD networks, even before the advent of large-scale quantum computers, and Paraxiom’s solution directly mitigates this risk. NIST’s finalization of its first post-quantum cryptography standards in 2024 provided the necessary algorithms for securing these classical channels, and the PQTG implements these standards to protect key delivery.

A compact 1U appliance form factor has been designed for the gateway, suggesting a focus on practical integration into existing network infrastructure, QURECA says. Sylvain Cormier, Founder of Paraxiom Technologies Inc., explains that “The key still has to travel from the box to the application over an ordinary channel, and that is the link we harden, with standard post quantum algorithms and no change to the quantum hardware.” QURECA’s role extends beyond simply distributing the PQTG; the company offers over 40 Continuing Professional Development (CPD)-certified courses focused on quantum-safe exposure, readiness assessments, and consulting services.

This educational component is important for organizations seeking to understand their vulnerabilities and implement appropriate security measures. QURECA’s established relationships with European telecom operators, members of the European Quantum Industry Consortium (QuIC) and programs related to the EuroQCI initiative position it as a key facilitator for the PQTG’s adoption across the continent.

According to QURECA, they “know the operators in Europe who run these networks; we bring the gateway and the evidence that it works.” This combination of technological solution and expert guidance aims to provide a comprehensive approach to securing quantum communications networks, bridging the gap between theoretical security and practical implementation.

Organisations across Europe are asking how to secure every link in their quantum-safe networks. Working with Paraxiom, we can introduce them to a practical, standards-based solution that fits alongside the QKD infrastructure they already have.

QURECA and Paraxiom Expand European Quantum Ecosystem Access

QURECA is extending its educational reach through a new collaboration with Paraxiom Technologies, focused on bolstering the security of quantum key distribution networks across Europe. Paraxiom’s core cryptography is written in Rust, an open-source language, with portions formally verified using Lean 4, a technique that mathematically proves the correctness of code. This focus on robust, verifiable security underpins the PQTG’s design and functionality.

The partnership’s timing is significant, as Europe accelerates its investment in quantum communication infrastructure through initiatives like EuroQCI. QURECA’s ability to connect quantum talent with employers, coupled with Paraxiom’s security solutions, positions both companies as key players in building a resilient and future-proof quantum ecosystem, highlighting the near-term potential of this collaboration.

A QKD network protects what happens between the boxes. The key still has to travel from the box to the application over an ordinary channel, and that is the link we harden, with standard post quantum algorithms and no change to the quantum hardware.

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Ivy Delaney

Ivy Delaney has been working with neural networks and machine learning since the mid-nineties, back when a couple of hidden layers and a long afternoon of training counted as ambitious. She has watched the field go from academic curiosity to the thing quietly running underneath everything, and she brings that long view to quantum computing. For Quantum Zeitgeist she covers the ground where the two fields meet. That means quantum machine learning and the variational algorithms it leans on, and it also means the less glamorous but more interesting story of classical machine learning already doing real work inside quantum machines, decoding error-correcting codes, calibrating noisy hardware and learning the error models that simulators depend on. She writes about the hardware those algorithms have to run on too, and about the post-quantum cryptography scramble that the same hardware has set off. Her stories typically start with the paper, whether that is peer-reviewed work, conference proceedings or an arXiv preprint, with the source linked so you can hold a claim up against the research it came from. She is unimpressed by benchmarks that will not say what they beat, and by demonstrations that only work in the press release.

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