Secret-Key Generation with PUFs and Biometric Identifiers for Compound Authentication Channels

In this study, we investigate the fundamental limits of secret-key generation with physical identifiers for compound authentication channels. Our contributions in this paper are the derivations of inner and outer bounds on the optimal tradeoff of secret-key, storage, and privacy-leakage rates for general discrete sources, and we show that these bounds are tight for Gaussian sources. In special cases, our characterizations reduce to existing results derived in previous works.