TOTP Authenticator Generator

1. Enter the issuer name (e.g., "GitHub") and your account name (e.g., your email)
2. Click Generate New Secret to create a random TOTP secret and QR code
3. Scan the QR code with Google Authenticator, Authy, 1Password, or any TOTP-compatible authenticator app
4. The generated TOTP code updates in real-time — verify it matches your authenticator app

TOTP (Time-based One-Time Password) is an algorithm defined in RFC 6238 that generates one-time passwords using a shared secret key and the current time. It is widely used for two-factor authentication (2FA).

Key Parameters

• Secret — A Base32-encoded shared key (typically 160 bits/32 chars)
• Time step — The interval between code changes (usually 30 seconds)
• Digits — The length of the generated code (usually 6 digits)
• Algorithm — The HMAC hash algorithm used (SHA-1 is the most widely compatible)