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SPOTLIGHT PUBLICATION | 23/10/2025

Global Standards, Regional Variants: Designing for PQC Across Jurisdictions

In this episode of Shielded, Jo Lintzen speaks with Dr. Richard Searle, Chief AI Officer at Fortanix, about how confidential computing and a software-first model accelerate the shift to post-quantum cryptography.

Solution brief: PQShield and Quantum Origin strengthening post-quantum cryptography with proven quantum randomness

PQShield and Quantinuum have developed a joint solution, combining Quantum Origin’s mathematically-proven Quantum Random Number Generation (QRNG) with PQShield’s FIPS-140-3-validated post-quantum cryptographic library in PQCryptoLib-SDK, for resilient post-quantum algorithms.

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.

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Cryptanalysis of the Peregrine Lattice-Based Signature Scheme

In this paper, we show that Peregrine, one of the candidates in the ongoing Korean post-quantum cryptography competition, is no exception, by demonstrating a practical key recovery attack against it.

An Improved Threshold Homomorphic Cryptosystem Based on Class Groups

We present distributed key generation and decryption protocols for an additively homomorphic cryptosystem based on class groups, improving on a similar system proposed by Braun, Damgård, and Orlandi at CRYPTO '23.

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.