Blackhorn Authenticator
Your codes stay on this device. This app has no account, no cloud vault, and no server connection for authenticator secrets.
Use a unique passphrase of at least 8 characters. Losing it means the encrypted vault cannot be recovered.
Your vault
Unlocked in this tab only · encrypted at rest
Add an account
Paste an otpauth:// setup link or enter the secret manually. QR scanning uses your device camera when supported.
Enter secret manually
Codes
No accounts yet. Add your first setup link above.
Privacy promise
Secrets are encrypted with AES-GCM using a key derived from your passphrase. TOTP codes are calculated locally with Web Crypto. Blackhorn never receives, stores, or syncs this vault.