Secure fingerprint fuzzy vault including novel chaff point generation method

Biometrie based authentication system authenticates an individual on the basis of biometrie template stored during enrolment. As the biometric features are immutable, therefore a security concern about the stored biometric template arises. Fingerprint fuzzy vault is a cryptographic construct securing the biometric template and allowing error tolerant fingerprint based authentication. In this paper, secure fingerprint fuzzy vault is proposed in which fingerprint minutiae points are transformed using Fast Walsh Hadamard Transformation. This paper also proposes a new chaff point generation method which is faster than existing methods in generating large number of chaff points. Performance of the proposed methodology is estimated by calculating False Acceptance Rate and False Rejection Rate.