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SPOTLIGHT PUBLICATION | 27/03/2025

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

Quantum risk is a business risk—and Signal Messenger isn’t waiting for quantum computers to arrive. In this episode of Shielded: The Last Line of Cyber Defense, Johannes Lintzen welcomes Rolfe Schmidt, Research Engineer at Signal Messenger, to explore how one of the world's most privacy-focused messaging platforms implemented post-quantum cryptography—even with a lean team.

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

Is your organization truly prepared for the post-quantum era? In the premier episode of Shielded: The Last Line of Cyber Defense, host Johannes Lintzen is joined by Bas Westerbaan, Research Engineer at Cloudflare, to discuss why organizations must act now on post-quantum cryptography, how to navigate the two-phase migration process, and how to overcome key management, compliance, and performance challenges.

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Video 5 – No can to kick down the road – it’s all about compliance

In this video, Ben and Ali discuss compliance, particularly as industry builds around the certifications for PQC.

Video 6 – Post-quantum is an era

In this video, Ali and Ben discuss some of the wider pieces of cryptography, many of which are not vulnerable to the quantum threat, but form essential components nevertheless, in the ‘post-quantum’ era.

Video 7 – Is it time to stop talking about PQC?

In this clip, Ben and Ali discuss the terminology of ‘post-quantum’. Is it still relevant? Is it misleading?

Video 8 – PQC in silicon

In this clip, Ben and Ali talk about PQShield’s silicon implementation of PQC – showing that we haven’t just designed PQC solutions, we’ve actually built our hardware IP onto a physical chip!

Video 9 – Standardization – what’s next?

In this video, Ben and Ali discuss NIST’s timeline, including FALCON, Round 4 KEMs, the necessary mix of lattice, code-based and hash algorithms, as well as the ongoing effort to select digital signatures.

HPKA: A High-Performance CRYSTALS-Kyber Accelerator Exploring Efficient Pipelining

This work explores several architectural optimizations and proposes a high-performance and area-time (AT) product efficient hardware accelerator for Kyber.

Masking the GLP Lattice-Based Signature Scheme at Any Order

In this paper, we describe the first masked implementation of a lattice-based signature scheme.

Anonymous Reputation Systems with Revocation, Revisited

In this work, we revisit ARS. Our contributions are threefolds: First, we show that all previous definitions of ARS allow the users’ purchase history to leak.

Compact NIZKs from Standard Assumptions on Bilinear Maps

The main focus of this work is on exploring short pairing-based NIZKs for all NP languages based on standard assumptions.

Plover: Masking-Friendly Hash-and-Sign Lattice Signatures

We introduce a toolkit for transforming lattice-based hash-and-sign signature schemes into masking-friendly signatures secure in the t-probing mod

Threshold Raccoon: Practical Threshold Signatures from Standard Lattice Assumptions

Threshold signatures improve both availability and security of digital signatures by splitting the signing key into N shares handed out to different parties.

Raccoon: A Masking-Friendly Signature Proven in the Probing Model

This paper presents Raccoon, a lattice-based signature scheme submitted to the NIST 2022 call for additional post-quantum signatures.