Sebastien Rousseau
Hoton Sebastien Rousseau

Sebastien Rousseau

Tabbatar da makomar banki
tare da agentic AI
da post-quantum cryptography.

Open-source payments, post-quantum security, and applied AI for financial services.

Soft natural light over a modern architectural space, representing dependable financial infrastructure.

What I build

Open source for the future of finance.

Payments

ISO 20022, end to end: pain.001, pacs.008, camt.053, and acmt.001. Adopt one library at a time.

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Security

Post-quantum primitives: ML-KEM (CRYSTALS-Kyber, NIST FIPS 203) and hashing, ready to pilot today.

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Tooling

Audited Rust libraries and a code security scanner, signed and shipped with a software bill of materials.

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Proof

By the numbers.

37.1MOpen-source downloads
663GitHub stars
84Sigstore-signed articles
19Years in payments and banking
Isometric render of an illuminated processor, representing the cryptographic foundations of payments.

EPAA · septembre 2025

Why the payments industry must act now.

Regulators are treating harvest-now-decrypt-later as a credible present risk. This paper, produced for the Emerging Payments Association Asia, sets out the structural threat and the case for coordinated action across wholesale payment rails.

Read the white paper

Karanta sabbin bincike

From the desk.

Interlinked glowing blocks forming a chain across a dark field — harmonised ISO 20022 messages resolving into a connected network, evoking the missing global map that turns structured payment data into a usable corporate standard
ISO 20022 · SWIFT · CBPR+

Daga Saƙonni zuwa Taswira: Gina Ma'aunin Kamfanoni na Duniya a kan ISO 20022 da Swift

TL;DR ISO 20022 da CBPR+ na Swift sun ba biyan kuɗi na ƙasa-da-ƙasa harshe na duniya da aka daidaita — amma ba taswirar duniya ba game da yadda kamfanoni ke amfani da shi. Yadda za a faɗaɗa daidaitawa daga abin da biyan kuɗi ke faɗa zuwa yadda kamfani ke amfani da shi, a kan hanyoyin da suka riga sun kasance.

Abstract horizon of converging signal lines — AI, synthetic media, and programmable-money rails resolving over a banking skyline, evoking a supervisory scan of emerging-technology risk for financial services in 2026
Emerging Technology · Horizon Scanning · FCA

Reading the Emerging-Technology Risk Horizon for Banks in 2026

TL;DR Karatu na asali na sararin haɗarin sabbin fasahohi ga bankuna a 2026 — hankalin da AI ta keɓance, laifin kuɗi na roba, da kuɗi mai iya shirya-shiri — da tsarin sigina-zuwa-kulawa, mai dogaro da Technology Horizon Scan 2026 na FCA.