pragmarx/google2fa
Google2FA adds HOTP/TOTP two-factor authentication to PHP, compatible with Google Authenticator and RFC 4226/6238. Generate secrets and QR code data, verify one-time codes, and tune validation windows and time drift—ideal for Laravel or standalone apps.
Architecture fit: Excellent for PHP/Laravel projects. The package is framework-agnostic but has a dedicated Laravel bridge for seamless integration. It cleanly separates authentication logic from presentation, making it ideal for adding 2FA to existing auth flows without framework lock-in. The RFC-compliant TOTP/HOTP implementation aligns with standard security practices.
Integration feasibility: High feasibility due to clear API design and extensive documentation. Core functionality (secret generation, verification) requires minimal code changes. Laravel bridge simplifies integration with service provider registration and config publishing. QR code generation requires separate library integration but has well-documented examples for popular options (BaconQRCode, Endroid, etc.).
Technical risk: Moderate. Key risks include:
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