Sebastien Rousseau

POLICY

NIST

NIST standards relevant to banking — FIPS 203/204, AI RMF, SP 800/1800 series — and the supervisory adoption patterns around them.

4 articles

APPLIED AI

Post-Quantum Payments Infrastructure: Why Banks May Replace Rather Than Retrofit Legacy Rails

Harvest-now-decrypt-later turns today's TLS-protected payment messages into tomorrow's decrypted exposure. ML-KEM and ML-DSA are an order of magnitude larger than the RSA and ECC keys legacy rails were sized for — retrofit triggers fragmentation, latency, and HSM exhaustion. The 2026 architectural decision is whether to patch or replace before the regulatory clock runs out.

APPLIED AI

Quantum Lattice Crypto: Bug in Chen's LWE Attack

Following my recent article on the [Challenges in Quantum Algorithms for Lattice-Based Cryptography][00], I am compelled to provide an update on the latest developments in [Yilei Chen's research…

APPLIED AI

KyberLib: Rust CRYSTALS-Kyber for Post-Quantum

KyberLib is a Rust-based library that protects your data from the potential threat of quantum computing. Built upon the CRYSTALS-Kyber algorithm, KyberLib delivers exceptional security,…