Publications

0

Peer-Reviewed
Papers

0

Further NIST PQC
Submissions

0

NIST PQC Standards
Co-Authored

0

Patents in
Process

0

Mature Products
Developed

0

Best Paper
Awards

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.

Filter by:

Area–Time Efficient Implementation of NIST Lightweight Hash Functions Targeting IoT Applications

This work presents field-programmable gate array (FPGA) implementations and carefully worked out optimizations of four Round-3 finalists in the NIST standardization process

A 334 μW 0.158 mm² ASIC for Post-Quantum Key-Encapsulation Mechanism Saber With Low-Latency Striding Toom–Cook Multiplication

We demonstrate that a memory-efficient striding Toom–Cook with lazy interpolation results in a highly compact, low-power implementation, which, on top, enables a very regular memory access scheme.

Comparing Key Rank Estimation Methods

Recent works on key rank estimation methods claim that algorithmic key rank estimation is too slow, and suggest two new ideas.

RISC-V Instruction Set Extensions for Lightweight Symmetric Cryptography

The NIST LightWeight Cryptography (LWC) selection process aims to standardise cryptographic functionality which is suitable for resource-constrained devices.

How to Hide MetaData in MLS-Like Secure Group Messaging: Simple, Modular, and Post-Quantum

Secure group messaging (SGM) protocols allow large groups of users to communicate in a secure and asynchronous manner.

A New Framework for More Efficient Round-Optimal Lattice-Based (Partially) Blind Signature via Trapdoor Sampling

Blind signatures, proposed by Chaum (CRYPTO’82), are interactive protocols between a signer and a user, where a user can obtain a signature without revealing the message to be signed.

Secure Messaging in a Post-Quantum World

Team PQShield experts outline how PQC can be applied to secure messaging in a two-party setting, typically between mobile devices, as well as the specific performance and data requirements.

WiP: Applicability of ISO Standard Side-Channel Leakage Tests to NIST Post-Quantum Cryptography

We discuss how to apply ISO 17825 to hardware modules that implement lattice-based PQC standards for public-key cryptography. We find that simple “random key” vs. “fixed key” tests are unsatisfactory due to the close linkage between public and private components of PQC keypairs.

SP 800-22 and GM/T 0005-2012 Tests: Clearly Obsolete, Possibly Harmful

NIST SP 800–22, describes 15 statistical tests and suggests that they can be used to evaluate random and pseudorandom number generators in cryptographic applications. The Chinese standard GM/T 0005–2012 describes similar tests. These documents have not aged well. The weakest pseudorandom number generators will easily pass these tests, promoting false confidence in insecure systems.

More efficient, provably-secure direct anonymous attestation from lattices

The Cloud-Edges (CE) framework, wherein small groups of Internet of Things (IoT) devices are serviced by local edge devices, enables a more scalable solution to IoT networks.

On Entropy and Bit Patterns of Ring Oscillator Jitter

We show how to evaluate entropy, autocorrelation, and bit pattern distributions of thermal jitter ring oscillator noise sources, even with low jitter levels or some bias.

Development of the RISC-V entropy source interface

The RISC-V true random number generator (TRNG) architecture breaks with previous ISA TRNG practice by splitting the entropy source (ES) component away from cryptographic DRBGs.