AAAmit Ashutoshinblog.amitkumarashutosh.in·May 28 · 29 min readBuilding a Message Parser from Scratch: How WhatsApp Knows This is BoldHow Rocket.Chat's GSoC project taught me to replace a parser generator with 400 lines of handwritten TypeScript — and why that matters. You've done it a thousand times. You open WhatsApp, type *Hell00
AAAmit Ashutoshinblog.amitkumarashutosh.in·Mar 7, 2025 · 7 min readStep-by-Step Guide to WebAuthn-Based 2FA Using SimpleWebAuthn LibraryIntroduction WebAuthn is a modern authentication standard that enables passwordless and phishing-resistant login using biometrics (Face ID, fingerprints), security keys, or device PINs. It enhances security by eliminating reliance on traditional pass...00