Add Google Authenticator 2FA to your Node app in two steps
SMRTR summary
Adding 2FA to side projects is notoriously painful, but 2fa-kit reduces it to two function calls: enroll and verify. The library handles encrypted secret storage, replay attack prevention per RFC 6238, hashed backup codes, and Google Authenticator migration QR import — all with zero dependencies, running on Node 20+, Bun, Deno, and browsers.
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