TOTP

Generate a time-based one-time password from a Base32 secret. For local testing only.

How it works

Uses RFC 6238 with HMAC-SHA1. Paste a Base32 secret (spaces allowed) or an otpauth://totp/... URL. HOTP and non-SHA1 algorithms are rejected. No QR enrollment. This is for local testing, not a password manager replacement.

Base32 secret

Digits

Period (seconds)

Output

Seconds remaining: —