OTB-morph: One-Time Biometrics via Morphing

TL;DR

This paper introduces OTB-morph, a novel cancelable biometric scheme using time-varying keys and morphing transformations to enhance security against attacks while maintaining recognition accuracy.

Contribution

It presents a new biometric transformation method combining time-varying keys and morphing, specifically designed to resist iterative optimization attacks.

Findings

Resists leakage attacks effectively

Improves face recognition performance

Uses time-varying biometric keys

Abstract

Cancelable biometrics are a group of techniques to transform the input biometric to an irreversible feature intentionally using a transformation function and usually a key in order to provide security and privacy in biometric recognition systems. This transformation is repeatable enabling subsequent biometric comparisons. This paper is introducing a new idea to exploit as a transformation function for cancelable biometrics aimed at protecting the templates against iterative optimization attacks. Our proposed scheme is based on time-varying keys (random biometrics in our case) and morphing transformations. An experimental implementation of the proposed scheme is given for face biometrics. The results confirm that the proposed approach is able to withstand against leakage attacks while improving the recognition performance.