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SPOTLIGHT PUBLICATION | 14/08/2024

New Whitepaper: “The new NIST standards are here: what does it mean for PQC in 2024?”

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

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.

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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.

MIRACLE: MIcRo-ArChitectural Leakage Evaluation: A study of micro-architectural power leakage across many devices

In this paper, we describe an extensible experimental infrastructure for evaluating the micro-architectural leakage, based on power consumption, that stems from a physical device.

A Concrete Treatment of Efficient Continuous Group Key Agreement via Multi-Recipient PKEs

Continuous group key agreements (CGKAs) are a class of protocols that can provide strong security guarantees to secure group messaging protocols such as Signal and MLS.