2FA Web Authenticator

A modern, zero-trust, end-to-end encrypted (E2EE) 2FA (TOTP) web application with serverless cloud synchronization.

Features

Zero-Trust & E2EE: AES-256-GCM encryption with 600,000 PBKDF2 iterations computed in a Web Worker.
Serverless Cloud Sync: Free deployment on Cloudflare Pages / Vercel with KV optimistic concurrency control.
Multi-Algorithm Support: Standard RFC 6238 (SHA1, SHA256, SHA512) and Steam Guard 5-character tokens.
Offline PWA: Full offline calculation support with Web App Manifest and Service Worker.
Light & Dark Theme: Sleek glassmorphism visual design with system theme detection.
QR Code Scanning: Import accounts directly from QR code images or Google Authenticator migration URIs.

Push repository to GitHub/GitLab.
Go to Cloudflare Dashboard -> Workers & Pages -> Create Application -> Pages.
Connect your git repository.
Set Build command: npm run build
Set Build output directory: dist
Create a Cloudflare KV namespace named VAULT_KV and bind it to your Pages project under Settings -> Functions -> KV Namespace Bindings.

npm install
npm run dev