Sebastien Rousseau
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Sebastien Rousseau

AI、ポスト量子暗号、ISO 20022、決済の未来に関する記事。

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Agentic engineering architecture diagram for banks — spec-driven AI agents, governance control plane, quantum-safe substrate, and legacy mainframe modernisation flows
Applied AI · Governance · Engineering

エージェンティック・エンジニアリング:銀行の 2026 年設計図

· Sebastien Rousseau

70% of banks now use agentic AI in some form; only one in five has a mature governance model. With the EU AI Act high-risk deadline twelve weeks away and autonomous adversaries operating at machine speed, this is the engineering and governance position a bank needs to hold.

Stacked US dollar coins under warm light, representing tokenised money-market fund yield
Payments · Stablecoins · Regulation

BlackRock BRSRV、BSTBL、GENIUS Act、トークン化された MMF

· Sebastien Rousseau

Stablecoins cannot pay yield under the GENIUS Act. BlackRock's BRSRV and BSTBL filings show the workaround — a tokenised money-market fund running alongside a regulated stablecoin to deliver yield through an adjacent, compliant rail.

Open vault door framed by gold light — visual metaphor for cryptographic protection of financial records
Post-Quantum · Treasury · Governance

台帳の防衛:法人金融のポスト量子移行

· Sebastien Rousseau

Quantum risk has moved from research curiosity to active regulatory mandate. With the G7 roadmap published in janvier 2026 and BIS Project Leap proving feasibility in live payment systems, the board-level question is no longer whether to migrate.

Cross-border payment message structured-address diagram with TwnNm and Ctry highlighted
ISO 20022 · Payments · CBPR+

2026 年 11 月の pacs.008 構造化アドレス期限

· Sebastien Rousseau

From novembre 2026, SWIFT CBPR+ rejects unstructured postal addresses in cross-border payment messages. Six months out, 65% of pacs.008 messages still ship non-compliant addresses and 44% of banks remain behind on the remediation programme.

Quantum computing circuit board with blue light patterns
Quantum

Quantum Thresholds Are Moving Again

· Sebastien Rousseau

新しい論文は、Shor のアルゴリズムが 1 万量子ビット程度で動作する可能性を示唆しています。暗号的に有意な量子計算の閾値は急速に低下しています。

Image generated using MidJourney. A network of digital nodes in red and blue hues
Quantum

Bug Discovered in Quantum Algorithm for Lattice-Based Crypto

· Sebastien Rousseau

LWE を解く Yilei Chen の量子アルゴリズムにバグが発見され、格子ベース暗号が一時的に安全になり、継続的な研究の必要性が浮き彫りになりました。

Banner for Fully Homomorphic Encryption
Quantum

銀行量子時代の完全準同型暗号

· Sebastien Rousseau

完全準同型暗号が銀行・金融サービスにおけるデータセキュリティをどのように革新し、量子時代の脅威に対してプライバシーを保護するか。

HSBC Headquarter in London Canary Wharf Docks
Quantum · Banking

量子鍵配送:銀行セキュリティの革新

· Sebastien Rousseau

As quantum computers pose a threat to traditional encryption methods, Quantum Key Distribution (QKD) emerges as a game-changer for security.

The DTT (DateTime) Rust library logo
Open source · Rust

dtt ライブラリで Rust の日時を習得する

· Sebastien Rousseau

DateTime (DTT) is a comprehensive Rust library for parsing, validating, manipulating, and formatting dates and times. With high precision and broad functionality.

Turned-off laptop computer on top of a white table
Open source · Rust

Static Site Generator: the fastest Rust-based SSG

· Sebastien Rousseau

Shokunin は Rust で書かれた静的サイトジェネレータで、超高速ビルド、JSON-LD ネイティブサポート、優れたアクセシビリティを実現します。