Articles by Dahmun Goudarzi

The OSTIF collaborated with Quarkslab to conduct a security audit of Paramiko, a pure-Python implementation of SSHv2 that provides both client- and server-side functionality. Given the sensitivity and importance of the target, the review focused not only on Paramiko itself but also on its dependencies. The assessment covered its interaction with rust-openssl bindings, the use of secure entropy sources, adherence to constant-time requirements, as well as code quality, testing practices, and the CI/CD pipeline, with the goal of identifying opportunities for further hardening.

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.

The OSTIF engaged with Quarkslab to perform a security audit of the Notary project, focused on new features.

In March 2024, SandboxAQ proposed a CTF around Post-Quantum Cryptography (and more specifically Kyber's key exchange) for the RWPQC workshop. Here is our write-up of the solutions to the challenges.

Mithril Security engaged a collaboration with Quarkslab to perform an audit of the BlindAI-preview, now known as BlindAI Core, which is an open-source confidential computing solution for querying and deploying AI models while guaranteeing data privacy. The goal of the audit was to evaluate the BlindAI resiliency based on the definition of a threat model after a refresh on the latest state-of-the-art.