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Secure Biometrics: Concepts, Authentication Architectures and Challenges
BIOMETRICS are an important and widely used class of methods for identity
verification and access control. Biometrics are attractive because they are
inherent properties of an individual. They need not be remembered like
passwords, and are not easily lost or forged like identifying documents. At the
same time, bio- metrics are fundamentally noisy and irreplaceable. There are
always slight variations among the measurements of a given biometric, and,
unlike passwords or identification numbers, biometrics are derived from
physical characteristics that cannot easily be changed. The proliferation of
biometric usage raises critical privacy and security concerns that, due to the
noisy nature of biometrics, cannot be addressed using standard cryptographic
methods. In this article we present an overview of "secure biometrics", also
referred to as "biometric template protection", an emerging class of methods
that address these concerns.Comment: 16 pages, 11 figures, 1 tabl