Generate test TOTP (Time-based One-Time Password) secrets and sample codes using the SHA-256 algorithm. Perfect for testing 2FA implementations, QA workflows, and authentication system development without needing real user accounts.
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Open 2FA/TOTP Generator →SHA-256 TOTP uses HMAC-SHA256 for stronger cryptographic security than the default SHA-1. Some enterprise authentication systems and security-conscious services support SHA-256 TOTP. The longer hash provides greater resistance to theoretical attacks, though practical TOTP security depends primarily on key secrecy rather than hash strength. TOTP works by computing HMAC(secret, time_step) where the time step changes every 30 seconds. The resulting hash is truncated to a 6-digit code. Our generator creates realistic test secrets in Base32 format (compatible with QR code provisioning URIs) and sample codes for testing purposes only.
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