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NVNguyễn Việt Tùngindevpath-traveler.nguyenviettung.id.vn·Feb 17 · 7 min read

Implementing WebAuthn in Practice

WebAuthn looks deceptively simple at a high level: Generate challenge Call browser API Verify signature Done In practice, it is not that simple. WebAuthn is cryptographically elegant but operationally unforgiving.Small mistakes create subtle se...

NVNguyễn Việt Tùngindevpath-traveler.nguyenviettung.id.vn·Feb 16 · 6 min read

Passwordless PWA Flow Architecture Walkthrough

Modern authentication diagrams are clean. Real systems are not. My architecture intentionally combines: WebAuthn (FIDO2) for phishing-resistant authentication Feide (OIDC) for federated identity, recovery, and bootstrap SQL Server for credential p...