Protecting Facial Biometric Templates with Threshold Secret Sharing: A Comparative Resource-Aware Study of a Non-Positional Polynomial Scheme and a Multivariable Verification Scheme
Facial biometric templates are permanent identifiers: once exposed, the underlying identity cannot be reissued, so single-copy storage is a critical single point of failure. This study protects facial templates by combining a non-invertible BioHashing transform and authenticated encryption with a threshold secret-shari...