4 ms·

Does anyone know how this works? It reminds me of a RSA SecurID but since it's only in software, can't it be reverse engineered?

• abraham 14y ago
  The app is open source https://code.google.com/p/google-authenticator/ https://code.google.com/p/google-authenticator/
• mryan 14y ago
  It uses TOTP - http://en.wikipedia.org/wiki/Time-based_One-time_Password_Algorithm http://en.wikipedia.org/wiki/Time-based_One-time_Password_Al...