Sebastien Rousseau
Hoton Sebastien Rousseau

Sebastien Rousseau

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

An gina shi don edge. An tsara shi don juriya wadda ba ta yarda da sasanci ba. Yana ƙarfafa ƙarni na gaba na biyan kuɗi a duniya.

For decision makers

Where this work shows up
on the balance sheet.

The open-source libraries below aren’t research curios. Each one maps to a board-level risk a Tier-1 bank is being asked to evidence under DORA, BCBS 239, Basel III or NIST CSF 2.0 — and shaves real cost off the audit trail that satisfies the regulator.

Compliance

DORA Article 5 & BCBS 239 evidence

Lossless parsing, signed releases and structured ISO 20022 outputs mean the configuration and payment files that move money are auditable end-to-end. Less to defend in your next supervisory exam.

See the case studies ›

Cost reduction

Open source over proprietary licensing

Apache-2.0 / MIT replaces six- and seven-figure vendor contracts on pain.001 generation, statement parsing and edge security tooling. Audit-grade quality without the per-seat fee.

Browse the projects ›

Strategic hedging

Post-quantum cryptography readiness

KyberLib gives your team an inspectable, NIST FIPS 203-aligned implementation of ML-KEM today — ready for the SWIFT structured-address cutover and the longer harvest-now-decrypt-later horizon.

Read the research ›

Authored & maintained

Open source for the
future of finance.

A portfolio of Python, Rust and JavaScript libraries I created and maintain. Open source, free to use, and applied to wholesale payments, cross-border settlement, financial data and quantum-resistant cryptography.

pain001 logo. Open-source ISO 20022 payment file automation by Sebastien Rousseau
Python · Payments

pain001

Matsala
Rubuta ISO 20022 pain.001 da hannu baya yin ƙarfi a ƙarƙashin canjin SEPA da SWIFT.
Hanya
Python da ke amfani da tsarin schema don mayar da CSV ko SQLite zuwa XML na biyan kuɗi mai inganci.
Sakamakon
Ƙungiyar ayyuka na iya aika pain.001 cikin mintoci; bayanan bincike suna tsira bayan canjin tsarin.

Tasiri ISO 20022 · SEPA + SWIFT

Learn about pain001

4116Apache-2.0last commit 2mo ago

pacs008 logo. Open-source ISO 20022 pacs.008 toolkit by Sebastien Rousseau
Python · Cross-border

pacs008

Matsala
Canja wurin kuɗi na FI-to-FI ya kasa binciken kuɗi lokacin da ƙa'idodin XSD, IBAN da PII suka bambanta.
Hanya
Ɗaya dakin karatu: JSON Schema, XSD, IBAN a ƙasashe 75, toshewar mataki na GDPR.
Sakamakon
Canjin kuɗi na ƙasa da ƙasa da ke wucewa a karo na farko a wurin mai kula da tsarin.

Tasiri Ƙasashe 75 · IBAN

Learn about pacs008

2Apache-2.0last commit 2mo ago

Bank Statement Parser logo. Open-source finance toolkit by Sebastien Rousseau
Python · Finance

Bank Statement Parser

Matsala
Tsare-tsaren bayanan asusun suna kama ƙungiyoyin sasantawa cikin sake shigar da bayanan da hannu.
Hanya
Ɗaya kayan aiki na Python da ke daidaita bayanan da yawa-tsari tare da layin bincike na matakin audit.
Sakamakon
Sasantawa na gudana ba tare da lambar haɗin gwiwa ta musamman ta kowace banki ba.

Tasiri Tsari-da-yawa · Matakin Audit

Learn about Bank Statement Parser

215Apache-2.0last commit 1mo ago

Hash HSH logo. Open-source Rust hash library by Sebastien Rousseau
Rust · Security

Hash (HSH)

Matsala
Dakunan karatu na hashing na Pre-PQC suna barin tarin takaddun shaida a buɗe ga quantum.
Hanya
Dakin karatu na hash da digest na Rust mai aminci na ƙwaƙwalwa tare da matsayin post-quantum.
Sakamakon
Hashing mai aminci na drop-in don sabis da ke shirin ƙaura PQC.

Tasiri Aminci na ƙwaƙwalwa · Rust

Learn about HSH

201Apache-2.0last commit 4mo ago

KyberLib logo. Open-source Rust CRYSTALS-Kyber library by Sebastien Rousseau
Rust · Quantum

KyberLib

Matsala
Bankuna na Tier-1 suna ɗauke da fallasa harvest-now-decrypt-later a kowane zaman TLS.
Hanya
Pure-Rust CRYSTALS-Kyber (NIST FIPS 203) da ke haɗawa zuwa hanyoyin tabbatarwa da suke akwai.
Sakamakon
Musayar makullin post-quantum a cikin Rust na matakin samarwa, wanda aka tabbatar da shi da zaman kansa.

Tasiri NIST FIPS 203

Learn about KyberLib

413last commit 4mo ago

noyalib logo. Open-source pure-Rust YAML 1.2 ecosystem by Sebastien Rousseau
Rust · YAML

noyalib

Matsala
Bututun AI, MCP da daidaitawa na gudana akan masu bincike na YAML tare da UB da ke goyan bayan C da kuma sauyawa na sifofin da baya sanar da kowa.
Hanya
Pure-Rust YAML 1.2 a fadin dakin karatu, CLI, LSP, MCP da WASM — sifili mara aminci, sifofin cikakke.
Sakamakon
Bututun YAML da suka daina zama mahadar raunin sarkar samar da kayayyaki.

Tasiri Sifofin 406 / 406 · 0 mara aminci

Learn about noyalib

1Apache-2.0last commit 1mo ago

“Quantum computing threatens the cryptographic foundations of financial services. Payments, from real-time to cross-border settlement, rely on protections that quantum computing will eventually render obsolete.”

Emerging Payments Association Asia (EPAA) · septembre 2025

Quantum-Safe Payments.

Industry white paper for the Emerging Payments Association Asia. The structural threat quantum computing poses to payment infrastructure, and the case for coordinated action now.

Banner illustration for the EPAA Quantum-Safe Payments white paper

EPAA · septembre 2025

Why the payments industry must act now.

Regulators are treating harvest-now-decrypt-later as a credible present risk. This paper outlines the structural threat and the urgent case for coordinated action across wholesale payment rails.

Read the white paper

Karanta sabbin bincike

From the desk.

Recent research and writing on quantum-safe cryptography, ISO 20022 migration and the future of wholesale payments.

Experience

Brands along the way.

From global Tier-1 banks to consumer technology. Payments and digital product leadership across HSBC, PayPal, Barclays, Shazam, AKQA and Virgin Group.