Sebastien Rousseau

OPEN-SOURCE

Open source

Open-source software in regulated banking — supply-chain risk, attestations, contribution policy, and the OSS projects banks rely on.

24 articles

INFRASTRUCTURE & CRYPTOGRAPHY

KyberLib and the Post-Quantum Banking Migration in 2026: From Standards to Code

KyberLib turns the post-quantum banking migration from policy paper into inspectable Rust — FIPS 203 ML-KEM key encapsulation, hybrid classical-plus-quantum handshakes, no_std compilation for HSMs, crypto-agile abstraction boundaries, and the DORA Article 5 governance evidence boards now need.

APPLIED AI

CloudCDN: An Open-Source Blueprint for the AI-Native Edge in 2026

CloudCDN is an open-source blueprint for the AI-native edge — a zero-trust MCP gateway with 42 tools, atomic Durable Objects rate limiting, WebAuthn passkeys, signed URLs, SLSA Level 3 provenance, and 3,185 tests at 100% coverage, mapped to DORA, BCBS 239, and Basel III.

APPLIED AI

The Cloud Native Banking Index in 2026: DORA, Platform Engineering, Sovereign Cloud, and Operational Resilience

An engineering blueprint for cloud-native banking in DORA audit phase. Five platform-engineering primitives — Kubernetes paved roads, Backstage portal, GitOps via ArgoCD, Open Policy Agent admission, OpenTelemetry end-to-end — produce Article 8 register evidence at the speed of the pipeline. Tested exit-execution annually for CTPP-dependent CIFs against BIA-derived RTO targets. Sovereign-cloud options (AWS European Sovereign Cloud, Microsoft EU Data Boundary, Bleu, Thales / S3NS) addressed as engineering decisions, not branding.

APPLIED AI

The Quantum-Safe Banking Index in 2026: Post-Quantum Cryptography, QKD, Crypto-Agility, and Harvest-Now-Decrypt-Later Risk

An index framework for measuring quantum-safe banking readiness in 2026: cryptographic bill of materials, hybrid TLS deployment, NIST FIPS 203 / 204 / 205 migration progress, crypto-agility primitives, and harvest-now-decrypt-later exposure across long-lived confidential data. The Board-Level Quantum Scorecard defines four exact percentages — inventory completeness, HNDL exposure, NIST migration progress, crypto-agility readiness — that turn project statuses into supervisory-ready evidence.

APPLIED AI

The Agentic AI Index for Banks in 2026: Measuring Autonomy, Governance, Auditability, and Business Impact

An engineering blueprint for agentic AI in tier-1 banks: classify by permissions not intelligence, treat every production agent as an SR 11-7 / SS1/23 model from day one, and build the five-component control plane — OAuth-scoped service accounts, deterministic semantic routing, OPA policy gates, immutable WORM audit logs, and a tested kill switch — that turns autonomous workflows into auditable evidence.

APPLIED AI

RustLogs (RLG): Structured Logging Library for Rust

In the world of software development, logging plays a crucial role in understanding the behaviour of an application, diagnosing issues, and ensuring smooth operation. Rust, a systems programming…

APPLIED AI

Àkàndé: GPT-Powered Voice Assistant for Executives

Àkàndé is an open-source Python voice assistant that chains OpenAI Whisper speech recognition, GPT-4 chat completions, and a local SQLite response cache into a voice-driven workflow — generating PDF summaries from conversation history via fpdf2 and keeping all stored data local with no cloud persistence.

APPLIED AI

Audio Analyser: Azure Speech, NLP, and Translation Pipeline

Audio Analyser is an open-source Python tool that chains Azure Cognitive Services speech-to-text, Text Analytics NLP, and Translator into a single CherryPy web application — turning audio recordings into structured transcripts, sentiment scores, and multilingual translations without cloud lock-in beyond the Azure SDK.

APPLIED AI

LibMake: Rust Library Scaffold Generator

LibMake is an open-source Rust CLI tool that generates a complete library scaffold from a single command or a TOML/YAML config file — producing Cargo.toml, a doc-commented src/lib.rs, integration test and benchmark harnesses, and a GitHub Actions CI workflow covering stable/beta/nightly Rust, clippy, rustfmt, and cargo-audit.

APPLIED AI

Automating ISO 20022 Payment Files Creation with pain001

pain001 is an open-source Python library that generates ISO 20022 pain.001.001.09 (CustomerCreditTransferInitiation) XML from CSV or SQLite input, validates output against the XSD schema, and computes CtrlSum and NbOfTxs automatically — supporting both SEPA SCT and CBPR+ cross-border message formats.

APPLIED AI

Bitcoin: A Year In Review of the First Cryptocurrency

Bitcoin, often hailed as digital gold, initiated a financial revolution by introducing decentralized electronic cash and blockchain technology. It enabled online payments between individuals…