Security Evaluation of Cancelable Biometrics

Abstract

Like any personal information, biometric templates can be intercepted, stolen, replayed or altered. Due to non- revocability of biometric data aforementioned attacks and may lead to identity theft. Having that said, it becomes clear that biometric systems operate with sensitive personal information and that biometric template security and privacy are important issues one should address while designing authentication systems. One approach to biometric template security and privacy is cancelable biometrics. Two main categories of cancelable biometrics can be distinguished: intentional distortion of biometric features with non-invertible transformations and biometric salting. State of the art approaches to cancelable biometrics are presented in this paper, as well as security evaluation of cancelable biometrics.