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SPOTLIGHT PUBLICATION | 26/06/2025

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.

Your Hardware Refresh Is a Quantum Deadline with Mamta Gupta, Lattice Semiconductor

In this episode of Shielded, Johannes Lintzen sits down with Mamta Gupta of Lattice Semiconductor to explore how hardware-rooted security must evolve to meet the post-quantum challenge.

HSMs and PQC Migration: Are We There Yet? / RSA

In this special RSA 2025 edition we gather 4 leading voices from the world of hardware security to discuss a cornerstone technology powering the post-quantum migration: the Hardware Security Module (HSM).

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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.

Open-source or commercial PQC libraries: How do I choose?

In this video, Ben Packman, PQShield's Chief Strategy Officer talks with our Senior Product Manager, Michele Sartori about some of the key differences between open-source and closed-source solutions for post-quantum cryptography.

Post-quantum cryptography and secure boot

In this video, Axel Y Poschmann, PQShield's VP of Product and Ben Packman, Chief Strategy Officer discuss some of the current issues around deploying post-quantum secure boot.