Biometric Identification Systems With Both Chosen and Generated Secret Keys by Allowing Correlation. (arXiv:2206.14356v1 [cs.IT])

We propose a biometric identification system where the chosen- and
generated-secret keys are used simultaneously, and investigate its fundamental
limits from information-theoretic perspectives. The system consists of two
phases: enrollment and identification phases. In the enrollment phase, for each
user, the encoder uses a secret key, which is chosen independently, and the
biometric identifier to generate another secret key and a helper {data}. In the
identification phase, observing the biometric sequence of the identified user,
the decoder estimates index, chosen- …

biometric correlation identification keys secret systems