Wyner-Ziv Coding for Physical Unclonable Functions and Biometric Secrecy Systems

Two constructive linear coding methods, previously proposed for the Wyner-Ziv problem, are developed to achieve all points of the key-leakage-storage regions of the generated- and chosen-secret models of biometric secrecy systems. The models also apply to physical unclonable functions that are realized by fine hardware variations. The linear coding is implemented by using nested polar codes and the designs achieve privacy-leakage and storage rates that improve on existing methods.