Secure and Efficient Online Fingerprint Authentication Scheme Based on Cloud Computing

The e-Finga online fingerprint authentication system, while efficient, is vulnerable to privacy breaches due to its use of deterministic encryption. Researchers found that adversaries could potentially exploit this to steal fingerprint data. To enhance security, the Secure e-finger scheme was introduced, employing a more complex encryption method that still allows for quick computations and minimal communication overhead. This upgrade increases the client's running time slightly by 6% but offers a substantial improvement in privacy protection, effectively blocking the identified attack without sacrificing performance. Additionally, a threshold scheme is suggested to prevent excessive access rights for single users.