In the ALLEGRO project, we are exploring a novel technique for user authentication in Quantum Key Distribution (QKD) systems by integrating Physical Unclonable Functions (PUFs) with Quantum Random Number Generators (QRNG) and Quantum Key Distribution (QKD) itself. In...
Allegro Project Update – Exploring Machine Learning Attacks on Inter-Class Datasets with GANs
As part of our work in the EU-funded Allegro project, we investigated a machine learning-based attack on Physical Unclonable Function (PUF) systems using Generative Adversarial Networks (GANs). ➡️ We specifically used a Conditional GAN (cGAN) implemented through the...
Exploring the Complexity of CRPs with Multiscale Entropy Analysis
As part of our ongoing work in the Allegro project, we investigated the complexity of Challenge-Response Pairs (CRPs) using a multiscale entropy approach — an essential step in characterizing Physical Unclonable Functions (PUFs) for secure embedded systems. 🧠 What...
Allegro Project Update – Post-processing Algorithm for Cryptographically Secure Speckle-based PUFs
We’re excited to share a core component of our work in the Allegro Project – the Post-processing Algorithm that transforms raw optical speckle patterns into cryptographically secure binary sequences, without storing any raw experimental data. This is a major step...
ALLEGRO Project: Optical PUFs for Next-Generation Network Security
In ALLEGRO, we're rethinking how networks verify trust. Modern network security depends on confidentiality, integrity, and authenticity—but traditional mechanisms are often vulnerable to sophisticated attacks. That’s why within the ALLEGRO project, we're pioneering...
Allegro Project Update: Enhancing QKD Performance with Receiver-Side Filtering
One of the key challenges in co-propagation Quantum Key Distribution (QKD) is the noise caused by Raman scattering and broadband detector sensitivity. At Allegro, we're tackling this by improving spectral filtering at the receiver side — a critical step to maximize...
Multiplexing Quantum and Classical Channels: A Step Forward in Practical QKD Deployment
An essential requirement for deploying Quantum Key Distribution (QKD) in real-world Optical Transport Networks (OTNs) is the co-propagation of quantum and classical channels over the same fibre infrastructure. Within the ALLEGRO project (Horizon Europe GA ID:...
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Project Spotlight: Long-Range QKD with Allegro
🔐 In the quantum era, secure communication is more critical than ever. Our latest work at Allegro focuses on enhancing the dynamic range of Quantum Key Distribution (QKD) systems — pushing the limits of how far Alice and Bob can be apart while still securely sharing...
Allegro Project: Advancing Multi-User MDI-QKD Protocols
As part of our work in the Allegro Project, we’ve taken a deeper step into enabling secure quantum key distribution (QKD) between multiple users in realistic network conditions — even in cases of basis mismatch. 1️⃣ Each user randomly selects a bit value b ∈ {0,1} and...