Optimum Biometric Authentication Scheme Based on Polar Codes
In this project, we consider a biometric authentication scheme as a beneficial and alternative approach for traditional cryptographic authentication systems. Our goal here is to design the component of a biometric authentication scheme, such that the leakage information about the biometric template and the related secret key to the person who has access to the stored data is minimized. For this purpose, we model this scheme as two communications systems: namely as an XOR channel and a wiretap channel. We use the capacity achieving polar coding scheme to maximize the entropy of the secret generated key and simultaneously minimize the leakage of information about the biometric template and the correspondence generated key. Finally, we aim to analyze the performance of the proposed biometric authentication system and simulate it on an existing iris database. Our performance criteria here will be the False Rejection Rate (FRR) and False Acceptance Rate (FAR) of the biometric authentication system or, equivalently, will be the Receiver-Operating Characteristic (ROC) of the system.