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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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Masking the GLP Lattice-Based Signature Scheme at Any Order

In this paper, we describe the first masked implementation of a lattice-based signature scheme.

Anonymous Reputation Systems with Revocation, Revisited

In this work, we revisit ARS. Our contributions are threefolds: First, we show that all previous definitions of ARS allow the users’ purchase history to leak.

Compact NIZKs from Standard Assumptions on Bilinear Maps

The main focus of this work is on exploring short pairing-based NIZKs for all NP languages based on standard assumptions.

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.