Securing biometric template using double hill cipher with self-invertible key and random permutation of pixels locations

Biometric could play an essential role in the future authentication system. So the security of biometric data is becoming a challenging problem now a days. We are proposing a cryptographic algorithm for securing biometric template using double hill cipher with the random permutation of pixels locations and self-invertible key matrix. The random permutation creates diffusion by permuting the location of image pixels and self-invertible key matrix creates a confusion. The proposed technique improve the biometric template security and solves the drawbacks of conventional hill algorithm and advance hill algorithm.