Secure Biometric Authentication Scheme Based on Chaotic Map

Biometric authentication system has been widely used because of its convenience. But the development of science and technology has brought new challenges to biological information in the authentication system. In this paper, a revocable biometric template authentication scheme based on chaotic map is proposed. The scheme uses a piecewise Logistic chaotic mapping system to generate key sequences to encrypt biometric data and changes the way of traditional biometric authentication system which directly stored biometric templates in plaintext. Our scheme enables the storage and matching of biometrics in the encryption domain and it has improved the security of the biometric identity authentication in open network.