activity
20032025
most citedQuantum LDPC codes with positive rate and minimum distance proportional to n^{1/2}

287 citations · 1.1k across the 48 of their papers we have counts for

collaborators

54 papers

quant-ph2025

The Quantum Decoding Problem : Tight Achievability Bounds and Application to Regev's Reduction

Agathe Blanvillain, André Chailloux, Jean-Pierre Tillich

We consider the quantum decoding problem. It consists in recovering a codeword given a superposition of noisy versions of this codeword. By measuring the superposition, we get back…

quant-ph2024

Quantum advantage from soft decoders

André Chailloux, Jean-Pierre Tillich

In the last years, Regev's reduction has been used as a quantum algorithmic tool for providing a quantum advantage for variants of the decoding problem. Following this line of work…

cs.IT2023

Projective Space Stern Decoding and Application to SDitH

Kevin Carrier, Valérian Hatey, Jean-Pierre Tillich

We show that here standard decoding algorithms for generic linear codes over a finite field can speeded up by a factor which is essentially the size of the finite field by reducing…

cs.CR2023

Reduction from sparse LPN to LPN, Dual Attack 3.0

Kévin Carrier, Thomas Debris-Alazard, Charles Meyer-Hilfiger +1

The security of code-based cryptography relies primarily on the hardness of decoding generic linear codes. Until very recently, all the best algorithms for solving the decoding pro…

quant-ph2023

The Quantum Decoding Problem

André Chailloux, Jean-Pierre Tillich

One of the founding results of lattice based cryptography is a quantum reduction from the Short Integer Solution problem to the Learning with Errors problem introduced by Regev. It…

cs.CR2023

A new approach based on quadratic forms to attack the McEliece cryptosystem

Alain Couvreur, Rocco Mora, Jean-Pierre Tillich

We bring in here a novel algebraic approach for attacking the McEliece cryptosystem. It consists in introducing a subspace of matrices representing quadratic forms. Those are assoc…