Cryptology ePrint Archive: Report 2004/106

Capacity and Examples of Template Protecting Biometric Authentication Systems

P. Tuyls and J. Goseling

Abstract: In this paper, we formulate precisely the requirements for privacy protecting biometric authentication systems. The secrecy capacity $\Cs$ is investigated for the discrete and the continuous case. We present, furthermore, a general algorithm that meets the requirements and achieves $\Cs$ as well as $\Cid$ (the identification capacity). Finally, we present some practical constructions of the general algorithm and analyze their properties.

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Publication Info: Accepted at the Biometric Authentication Workshop

Date: received 5 May 2004

Contact author: pim tuyls at philips com

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Version: 20040507:080500 (All versions of this report)

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