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SPOTLIGHT PUBLICATION | 09/10/2025

No-Regrets Migration: Why PKI Should Be Your First Move

In this episode of Shielded, Johannes Lintzen speaks with Bruno Couillard, CEO and co-founder of Crypto4a, about his journey from designing the original Luna HSM to building the next generation of quantum-safe hardware.

Quantum Secure Key Management: PQShield and Cryptomathic’s CrystalKey360

This joint Guide with Cryptomathic outlines the critical challenges driving a major evolution in cryptographic key management, namely the threat of quantum computing and the growing complexity of multi-cloud environments

Complacency, Not Quantum, Is the Real Threat: Mike Silverman on Why Crypto-Agility Can’t Wait

In this episode of Shielded: Jo speaks to Mike Silverman, Chief Strategy & Innovation Officer at FS-ISAC. Mike shares why treating cryptographic migrations as one-off projects leaves organisations exposed, how building inventories and risk-based models creates real readiness, and why crypto-agility, not quantum anxiety, is the foundation for long-term security.

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Mask Compression: High-Order Masking on Memory-Constrained Devices

In this work, we introduce mask compression. This conceptually simple technique is based on standard, non-masked symmetric cryptography.

An Efficient and Generic Construction for Signal’s Handshake (X3DH): Post-quantum, State Leakage Secure, and Deniable

The Signal protocol is a secure instant messaging protocol that underlies the security of numerous applications such as WhatsApp, Skype, Facebook Messenger among many others.

Breaking Parallel ROS: Implication for Isogeny and Lattice-based Blind Signatures

In this work, we provide a simple and novel attack on blind signatures based on identification protocols performing parallel repetition to reduce the soundness error.

New Whitepaper: “The new NIST standards are here: what does it mean for PQC in 2025?”

Yesterday NIST published their finalized post-quantum cryptography (PQC) standards. This paper discusses the standards in more detail and what comes next.

CV2EC: Getting the Best of Both Worlds

Converting CryptoVerif models to EasyCrypt: getting the best of both worlds.

Adaptively Secure 5 Round Threshold Signatures from MLWE/MSIS and DL with Rewinding

T-out-of-N threshold signatures have recently seen a renewed interest, with various types now available, each offering different tradeoffs. However, one property that has remained elusive is adaptive security.

Flood and submerse: Distributed Key Generation and Robust Threshold Signature from Lattices

We propose a new framework based on random submersions for constructing verifiable short secret sharing and showcase it to construct efficient threshold lattice-based signatures in the hash-and-sign paradigm, when based on noise flooding.

Two-Round Threshold Signature from Algebraic One-More Learning with Errors

In this work, we construct the first efficient two-round lattice-based threshold signature without relying on FHE or HTDC.

CSI-Otter: Isogeny-based (Partially) Blind Signatures from the Class Group Action with a Twist

In this paper, we construct the first provably-secure isogeny-based (partially) blind signature scheme. (journal version)

Post-Quantum Secure Boot for Processors and FPGAs

This whitepaper summarises the current state of the PQC standards and the governmental regulations. It especially highlights the US Commercial National Security Algorithm Suite (CNSA) 2.0 which mandates software/firmware1 signing to use quantum-safe signatures as the default option by 2025, and as the only option by 2030.

Formally verifying Kyber Episode V: Machine-checked IND-CCA security and correctness of ML-KEM in EasyCrypt

Using computer-assisted proof tools to ensure security and correctness of Kyber and NIST-standard ML-KEM.

Post-Quantum Cryptography for Defence and Governmental Applications: Overview and Use Cases

Protecting the Military against the Quantum Threat to Today’s Cryptography.