Payments, post-quantum security, and applied AI. Open source, audited, and built to run on your own infrastructure.
BUILT FOR FINANCIAL SERVICES
PAYMENTS & ISO 20022
ISO 20022 covers the full message lifecycle. These libraries generate pain.001 initiation files, build and validate pacs.008 transfers, read camt.053 statements, and handle acmt.001 account management, with parsers for older formats. You can adopt one library at a time instead of replacing a core system.
POST-QUANTUM SECURITY
Some financial records stay sensitive for decades, long enough that data captured today could be read once quantum computers mature. These Rust libraries implement ML-KEM (CRYSTALS-Kyber, NIST FIPS 203) along with hashing and related primitives, so a migration can begin before the deadlines force it.
DEVELOPER PLATFORM
The same Rust libraries that build and secure this site. They include noyalib for YAML and the Static Site Generator itself, published with CycloneDX SBOMs and Sigstore signatures. Your engineers build on them instead of maintaining the equivalents in-house.
AUTOMATED FINANCIAL INFRASTRUCTURE
Payment files and bank statements, without the friction. These tools generate the full ISO 20022 message lifecycle and parse messy real-world statements with deterministic precision. Bring your CSVs, PDFs, or databases. The data just flows.
Generates ISO 20022 pain.001 files from CSV or SQLite. Banks and payment providers use it to produce structured credit-transfer messages without rebuilding existing systems.
4416Apache-2.0last commit 1w ago
Generates, validates, and delivers ISO 20022 pacs.008 messages for bank-to-bank customer credit transfers. Includes JSON Schema and XSD validation, IBAN checks across 75 countries, and PII masking for GDPR and PCI-DSS.
3Apache-2.0last commit 1w ago
Reads ISO 20022 camt.053 bank-to-customer statements and extracts balances, entries, and transaction detail into structured data. Includes MT940 loading, XLSX export, and editor and AI-assistant integrations.
ISO 20022 account-management messaging. Opens, maintains, closes, switches, and verifies bank accounts from plain data files, with editor and AI-assistant tooling.
A Python toolkit that turns bank statements in several formats into structured data. Built for messy real-world files and for audit requirements.
A Rust application for cash allocation across fund structures, using forecasting to inform the split. Aimed at treasury, fund accounting, and asset allocation.
1Apache-2.0last commit 4mo ago
A Rust library for generating and reading QR codes in several formats. Payment uses include EPC QR codes for SEPA credit transfers, payment links for merchant collection, and step-up authentication.
12Apache-2.0last commit 5d ago
POST-QUANTUM FINANCIAL SECURITY
Security built for the quantum era, applied today. These libraries track the NIST standards for key encapsulation and hashing, so you can future-proof financial infrastructure long before the threat lands.
A Rust implementation of CRYSTALS-Kyber, the NIST FIPS 203 standard for post-quantum key encapsulation.
433Apache-2.0last commit 2w ago
Hash and digest algorithms for password storage and verification, written with a quantum-resistant posture in mind.
201Apache-2.0last commit 1w ago
A cross-platform command-line tool for generating random passwords, backed by audited cryptographic primitives.
APPLIED AI & EXECUTIVE INTELLIGENCE
AI put to work on everyday operations. Scan code for vulnerabilities, turn a question into a structured briefing, and work by voice. On your terms, without vendor lock-in.
A code security scanner for eight languages that pairs static and taint analysis with LLM verification to cut false positives. Outputs Sigstore-signed SARIF, SBOM, and OpenVEX bundles for supply-chain review.
1AGPL-3.0last commit 6d ago
A voice assistant built on OpenAI's GPT models, with PDF summaries and response caching. Suitable for personal and executive use.
Converts audio to text in real time using AI speech recognition. Aimed at analysing recorded conversations and meetings.
A cryptographic service for common application needs: encryption, tokenisation, transaction authorisation, code signing, and key lifecycle management.
72MITlast commit 1mo ago
SOVEREIGN ENTERPRISE TECH
Foundations you can own. Audited, memory-safe Rust libraries that run on your infrastructure and ship with a software bill of materials and a Sigstore signature. Read every line. Vendor it. Keep it in-house.
A static site generator in Rust, secure by default. It includes WCAG AAA validation, CSP and SRI hardening, a local LLM content pipeline, a WebAssembly target, and 28-locale support.
524Apache-2.0last commit 3d ago
A pure-Rust YAML 1.2 implementation. Zero unsafe code, full spec compliance, streaming serde, a lossless syntax tree, and JSON-Schema validation. Ships as a library, CLI, language server, MCP server, and WASM build.
33Apache-2.0last commit 1w ago
YAML serialisation and deserialisation for Rust data structures, built on the Serde framework.
A logging library for Rust with structured formats, asynchronous logging, and configurable output.
A scaffold generator for Rust libraries. It emits pre-filled template files for tests, benchmarks, and CI.
301Apache-2.0last commit 4mo ago
A date and time library for Rust: ISO 8601 formatting, time-zone handling, and access to individual date components.
7Apache-2.0last commit 1w ago
Random number generation based on the Mersenne Twister algorithm, used in simulations and games.
A Rust library for accessing mathematical and cryptographic constants.
5Apache-2.0last commit 1w ago
WEB, PUBLISHING & ENVIRONMENT
Templates, a CSS framework, two industry publications, and the reproducible setup that ships them all. The stack this site runs on.
A starter template for the Static Site Generator, set up for clean and accessible sites. The template I use when starting a new site.
1Apache-2.0last commit 2y ago
A modular Stylus library with components and mixins for web and mobile layouts. This site is built on it.
32Apache-2.0last commit 1mo ago
A publication on how banks are applying AI, covering customer service, fraud detection, and operations.
A publication on quantum computing in banking and finance, from risk analysis to cryptography.
Fractional CFO advisory from a finance leader with more than 20 years in technology, covering growth, funding, and financial operations.
Configuration files for macOS, Linux, and Windows: scripts and settings for a development workflow.
6916MITlast commit 3d ago
Most projects are dual-licensed under MIT and Apache-2.0, the standard for the Rust ecosystem, which gives commercial users explicit patent rights as well as permissive redistribution. A small number of clients' tools are released under Apache-2.0 only. The licence file at the root of each repository is the authoritative source.
Many are. pain001 is used by banks and payment-service providers to automate ISO 20022 file creation. KyberLib tracks the NIST FIPS 203 specification and ships test vectors. Each repository's README and CI badges will tell you the current status; if you need a specific guarantee for production use, get in touch.
Every project has a public GitHub repository under github.com/sebastienrousseau. Open an issue describing the problem (a minimal reproducer helps) or a pull request linked to an issue. Contributions are governed by the Developer Certificate of Origin and require signed commits.
Yes, with the usual caveats. The libraries are independent open-source work, not a regulated product. Run your normal supply-chain, security, and dependency-review processes, such as vendoring through your internal mirror, scanning with SBOM tools, and pinning by Git SHA or cryptographic hash, before deploying to production payment infrastructure.
Yes, on a selective basis. Engagements focus on ISO 20022 migration, post-quantum cryptography migration roadmaps, and applied AI in financial services. Get in touch with a short brief, your timeline and any constraints.
Every dated post on this site is announced through the RSS feed and the Banking On Quantum newsletter. Individual repositories also publish releases on GitHub, which you can watch directly.