Articles by Célian Glénaz

3 articles
Date Fri 21 March 2025
Authors Célian Glénaz, Dahmun Goudarzi, Julio Loayza Meneses
Category Cryptography

Following the introduction of crypto-condor and differential fuzzing in earlier blogposts, we showcase a use case where Quarsklab's automated test suite for cryptographic implementations allowed us to improve the reference implementation of the recently standardized HQC scheme.

Date Thu 03 October 2024
Author Célian Glénaz
Category Cryptography

Following a brief introduction to differential fuzzing, this blog post reviews the leading tools that leverage it for testing cryptographic primitives. In the second half, we present a method for creating a differential fuzzer along with the results we obtained.

Date Tue 30 August 2022
Author Célian Glénaz
Category Exploitation

This article introduces a kind of eBPF program that may be used to monitor userspace programs. It first introduces you to eBPF and uprobes and then explores the flaws that we found in uprobes.