Two-Factor Auth

$9.99

Complete two-factor authentication with TOTP generation (RFC 6238), QR code SVG generation for authenticator apps, backup codes, SMS/email delivery hooks, and a full recovery flow. Compatible with Google Authenticator and Authy. Runs on Python 3.10+ stdlib only.

• TOTP generation per RFC 6238 (30-second intervals)
• QR code generation as SVG (no image library needed)
• Backup codes: cryptographically secure, single-use
• SMS/email hook interface for code delivery
• Configurable time window tolerance (clock drift)
• Recovery flow with backup code verification
• CLI for setup, QR generation, and verification

# Set up 2FA for a user (generates secret + QR code)
python main.py setup --user alice --issuer "Acme Corp"

# Verify a TOTP code
python main.py verify --user alice --code 123456

# Generate backup codes
python main.py backup-codes --user alice --count 10