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SPOTLIGHT PUBLICATION | 30/04/2025

Awareness to Action: The Blueprint for Quantum-Resilient Security | Garfield Jones

In this episode of Shielded: The Last Line of Cyber Defense, host Johannes Lintzen sits down with Dr. Garfield Jones from CISA to dive into the practical steps for post-quantum migration, making the case that waiting until 2035 is far too late.

Your Cryptography is stuck in 2010 – How to Catch Up | Hart Montgomery

In this episode of Shielded: we speak with Hart Montgomery, Technical Director at LF Decentralized Trust, about how outdated cryptographic dependencies, hidden vulnerabilities, and poor crypto agility are putting critical systems at risk.

How to Build Your 12-Month Post-Quantum Strategy With NIST’s Dustin Moody

Shielded welcomes Dustin Moody, the mathematician leading NIST's post-quantum cryptography standardization project, for an in-depth discussion on why organizations must act now.

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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.

How Multi-Recipient KEMs can help the Deployment of Post-Quantum Cryptography

The main purpose of this work is to raise awareness about a primitive that can provide large efficiency gains in post-quantum cryptography: multi-recipient KEMs, ormKEMs.

Optimizations and Practicality of High-Security CSIDH

In this work, we assess the real-world practicality of CSIDH, an isogeny-based non-interactive key exchange.

Practical Round-Optimal Blind Signatures in the ROM from Standard Assumptions

In this work, we present two round-optimal blind signatures under standard assumptions in the ROM with different approaches: one achieves the smallest sum of the signature and communication sizes, while the other achieves the smallest signature size.

Antrag: Annular NTRU trapdoor generation

In this paper, we introduce a novel trapdoor generation technique for Prest's hybrid sampler over NTRU lattices.

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.