Deception with Side Information in Biometric Authentication Systems
This work addresses security vulnerabilities in biometric systems for applications like access control, but it is incremental as it builds on existing rate distortion theory.
The paper tackles the probability of successful deception in biometric authentication systems when adversaries have correlated side information, such as partial fingerprints or DNA sequences of relatives, by determining the optimal exponent of this probability through achievability and converse proofs.
In this paper, we study the probability of successful deception of an uncompressed biometric authentication system with side information at the adversary. It represents the scenario where the adversary may have correlated side information, e.g.,~a partial finger print or a DNA sequence of a relative of the legitimate user. We find the optimal exponent of the deception probability by proving both the achievability and the converse. Our proofs are based on the connection between the problem of deception with side information and the rate distortion problem with side information at both the encoder and decoder.