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SPOTLIGHT PUBLICATION | 17/09/2025

PQC vs. QKD: What Matters Now and What Can Wait

In this episode of Shielded, we talk with Will Collison, Interim Global Head of Cryptography at HSBC. Will explains how to separate PQC, QKD, and quantum computing, and why cryptographic agility is the real objective.

3, 5 or 8 Years? The Realistic Timeline for Migration and the Task That Can’t Wait

What if quantum computing feels like a distant threat, but your timeline to prepare is already running out? We welcome Adrian Neal, Senior Director and Global Lead for Post-Quantum Cryptography at Capgemini.

The Crypto Agility Paradox: When Hardware Becomes Your Security Bottleneck

In this episode of Shielded, we are joined by Cassie Crossley, Vice President of Supply Chain Security in the Global Cybersecurity & Product Security Office at Schneider Electric. Cassie shares the hard-earned lessons from a multi-year crypto agility program in one of the world’s largest OT environments.

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Your Cryptography is stuck in 2010 – How to Catch Up | Hart Montgomery

In this episode of Shielded: we speak with Hart Montgomery, Technical Director at LF Decentralized Trust, about how outdated cryptographic dependencies, hidden vulnerabilities, and poor crypto agility are putting critical systems at risk.

How to Build Your 12-Month Post-Quantum Strategy With NIST’s Dustin Moody

Shielded welcomes Dustin Moody, the mathematician leading NIST's post-quantum cryptography standardization project, for an in-depth discussion on why organizations must act now.

Episode 2: The Quantum-Safe Playbook: How Signal Protected Billions with a Lean Team

In this episode, Johannes Lintzen welcomes Rolfe Schmidt, Research Engineer at Signal Messenger, to explore how one of the world's most privacy-focused messaging platforms implemented PQC.

Formal Verification – why does it matter for PQC?

Formal verification has become increasingly important in the realm of cryptographic primitives, which serve as the foundational elements of secure communication systems. As cryptographic algorithms underpin the confidentiality, integrity, and authenticity of digital information, any flaw in their implementation can lead to catastrophic security breaches.

Episode 1: Inside Cloudflare’s Post-Quantum Journey: Bas Westerbaan on Real-World Implementation

In the premier episode of Shielded: The Last Line of Cyber Defense, host Johannes Lintzen is joined by Bas Westerbaan, Cloudflare, to discuss why organizations must act now on post-quantum cryptography.

A comparative analysis of open-source and commercial PQC solutions

In this article, we’ll explore some of the key considerations to be made when it comes to the comparison of open source with commercially-licensed IP.

Identity and payments: preparing for the quantum threat

With the world relying increasingly on digital payments, online authorization, and cloud-based access, we need cryptography to be smarter and more prescient than ever.

Recursive Lattice Reduction

We propose a recursive lattice reduction framework for finding short non-zero vectors or dense sublattices of a lattice.

A Tight Security Proof for SPHINCS+, Formally Verified

In this work, we formally prove a tight security bound for SPHINCS+ using the EasyCrypt proof assistant, establishing greater confidence in the general security of the scheme and that of the parameter sets considered for standardization.

Group signatures and more from isogenies and lattices: generic, simple, and efficient

We construct an efficient dynamic group signature (or more generally an accountable ring signature) from isogeny and lattice assumptions.

The Cost of Maintaining Keys in Dynamic Groups with Applications to Multicast Encryption and Group Messaging

In this work we prove lower bounds on the (communication) cost of maintaining a shared key among a dynamic group of users. Being "dynamic'' means one can add and remove users from the group.

Tighter Adaptive IBEs and VRFs: Revisiting Waters’ Artificial Abort

In this paper, we analyze proofs based on the partitioning technique through a new lens.