Publications

We present the first threshold signature scheme fully compatible with ML-DSA. It is robust, scalable, and optimized for small groups, proving practical for crypto wallets, TLS, and Tor in real-world benchmarks.

Antti Ropponen, Global Quantum Safe Transformation Leader at IBM Consulting, explains why the current shift toward post-quantum cryptography mirrors the early days of cloud migration.

PQShield's Lapiha and Prest proposed a lattice-based TKEM from a TIBE and signatures, but with 540 KiB ciphertexts. We optimize it via random oracles, approximate computing, and NTRU trapdoors, reducing ciphertext size 18x to under 30 KiB.

We present the first 3-round (2 online, 1 offline) threshold Schnorr scheme with adaptive security under the DL assumption. By avoiding stronger assumptions like DDH/AOMDL, we close a major gap, achieving efficiency and security from minimal foundations.

To securepost-quantum transition, this paper introduces Hybrid EU-CMA and Silithium. By combining classical and PQ algorithms, Silithium prevents separability attacks while offering faster speeds and smaller sizes than simple concatenation.

Falcon is a post-quantum signature scheme that usually relies on inefficient trial-and-error. This new MCMC sampling method achieves higher security and shorter signatures more efficiently while simplifying the system's overall implementation.

In this episode of Shielded, Jo Lintzen speaks with Aisling Dawson, Senior Analyst at ABI Research, and Itan Barmes, Chief Strategy Officer at Qiz Security, live from RSA Conference 2026.

In this episode of Shielded:, Jo speaks with Carolina Polito, a researcher at the Center for European Policy Studies and a PhD candidate in international relations.

Today marks a massive milestone for Japan’s digital sovereignty. Following PQShield’s comprehensive evaluation of the ML-KEM algorithm for CRYPTREC (Japan’s cryptographic standardization body), the gates are officially open for quantum-safe deployment across the country’s government procurement and technology supply chains.

This paper details how to protect FrodoKEM against physical side-channel attempts. The authors provide a new, protected implementation for embedded chips and use hardware testing to prove it successfully thwarts these real-world attacks.

In this episode of Shielded, Jo Lintzen speaks to Sarah McCarthy, Quantum Readiness Program Lead at Citi, who shares how Citi's quantum readiness program has evolved since 2022. They discuss supply chain readiness, and why the first step toward quantum safety does not require a dedicated team or advanced algorithms.